Application of different models to the lactation curves of unimproved Awassi ewes in Turkey

Size: px
Start display at page:

Download "Application of different models to the lactation curves of unimproved Awassi ewes in Turkey"

Transcription

1 Souh African Journal of Animal Science 005, 35 (4) 38 Applicaion of differen s o he lacaion curves of unimproved Awassi ewes in Turkey B. Dag 1#, I. Keskin 1 and F. Mikailsoy 1 Deparmen of Animal Science, Faculy of Agriculure, Selcuk Universiy, 4031, Konya, Turkey Deparmen of Soil Science, Faculy of Agriculure, Selcuk Universiy, 4031, Konya, Turkey Absrac The objecive of his sudy was o invesigae he use of four differen mahemaical funcions (Wood, Inverse Polynomial, Quadraic and Cubic s) for describing he lacaion curve of unimproved Awassi ewes. Daa were colleced from 136 ewes from he same flock raised on he Sae Farm of Gözlü in he Konya Province of Turkey. The differences in esimaed oal milk yields beween he s were no saisically significan. All s were adequae in describing oal milk yield, hough oal milk yield esimaed using he Cubic was very close o oal milk yield calculaed by he Fleischmann mehod. Age effecs on parameers were no significan. The Inverse Polynomial overesimaed he peak yield significanly. Esimaed peak yields of he Wood and Cubic were similar while ha obained from he Quadraic was significanly lower han ha of he oher s. Day of peak yield esimaed by he s varied beween 10. and 56.4 days. The differences beween days of peak yield esimaed using he differen s were significan. R values of he s ranged from 0.74 o The Cubic gave he bes R value. The lowes mean square predicion error was found using he Cubic. Correlaion coefficiens beween oal milk yield calculaed by he Fleischmann mehod and esimaed oal milk yield from he oher s ranged from o The highes correlaion coefficien was found for he Cubic. As a resul, he Cubic showed he bes fi o he daa colleced from unimproved Awassi ewes and allowed a suiable descripion of he shape of he lacaion curve. Keywords: Unimproved Awassi, sheep, ewes, lacaion curve, milk yield, mahemaical # Corresponding auhor. bdag@selcuk.edu.r Inroducion Appropriae s for describing lacaion curves provide useful informaion for breeding programs and managemen pracices, especially for culling and in assessing he nuriional and healh saus of animals. In order o assess plausible forms of lacaion curves, milk yield records colleced hroughou he whole lacaion are required (Chang e al., 001). Empirical algebraic s offer summaries of longiudinal milk yield paerns hroughou lacaion, from which cumulaive curves can be esimaed (Ruiz e al., 000). These s allow oal milk yield predicion from parial or incomplee daa, and hey can be used in ling sudies for analysing changes in milk yield caused by environmenal facors (Goodall & Spreavak, 1985; Moran & Gnanasakhy, 1989). Animals wih he poenial for a high milk yield can be idenified by using his informaion before he lacaion has been compleed. Furhermore, lacaion curves can be used o esablish a suiable ime o end he lacaion (Chang e al., 001). Several mahemaical s have been developed o describe lacaion curves (Wood, 1967; Neal & Thornley, 1983; Grosmann & Koops, 1988; Moran & Gnanasakhy, 1989; Rook e al., 1993; Dijksra e al., 1997; Cappio-Borlino e al., 1997; Pollo, 1999; 000). The Wood has been used in mos lacaion curve sudies, because i includes he basic feaures of lacaion curves wih only hree parameers a, b and c which allow he calculaion of average producion, maximum producion and day of maximum producion, respecively. This has made he Wood he mos widely used funcion for he descripion of lacaion curves. Mos of he alernaive s are also based on he Wood (Cobby & Le Du, 1978; Wilmink, 1987; Papajcsik & Bodero, 1988). However, empirical mahemaical s have been proposed o describe he regular shape of he lacaion curve in dairy cows and dairy sheep (Torres- Hernandez & Hohenboken, 1980; Cappio-Borlino e al., 1989; Cappio-Borlino e al., 1995; Groenewald e al., 1995). Aemps o fi hese s o decayed curves resuled in parameer esimaes ha fell ou of he range of biological significance (Cappio-Borlino e al., 1997).

2 Souh African Journal of Animal Science 005, 35 (4) 39 The Awassi is he mos numerous and widespread ype of sheep in souhwes Asia. I is he ypical sheep breed of Syria, Lebanon, Jordan and Israel. The Awassi is also disribued hroughou souheas Turkey. I is very hardy and hrives well under poor feeding and exreme climaic condiions. Husbandry is ypically exensive. Animals are kep in simple sheep sheds during winer when hey are fed on sraw. In some flocks animals receive some hay and a limied amoun of concenraes for a shor period before and afer lambing. The lacaion period is 6-7 monhs. The average oal milk yield (TMY) is abou kg for unimproved Awassi ewes while he TMY of improved Awassi ewes is ca kg. Body weighs of ewes and rams range from 45 o 50 kg and 60 o 70 kg, respecively. Average greasy fleece weigh is abou kg. Saple lengh and wool fineness are cm and 3-35 µ, respecively (Kaymakçı, 004). The Awassi has a brown face and legs wih he fleece varying in colour from brown o whie. The unimproved Awassi sheep has a big fa-ail. The objecive of his paper was o invesigae he use of a range of mahemaical funcions for describing he lacaion curve of unimproved Awassi ewes in Turkey. Maerials and Mehods Daa were colleced from 136 unimproved Awassi ewes from a flock kep a he Sae Farm of Gözlü in he Konya province (38 o 7'N, 3 o 'E and 930 m above sea level) of Turkey. Ewes were classified ino six age groups of (n = 16), 3 (n = 13), 4 (n = 9), 5 (n = 3), 6 (n = 15) and 7 (n = 31) years of age. Age a firs lambing was ca. 4 monhs. All ewes lambed in March. They were hand-milked wice daily and he firs milk es was performed wihin he firs monh afer lambing (mean = 5.3 days, s.d. = 3.1) in an aemp o describe he peak yield. All lambs suckled heir dams freely unil firs milk recordings. They were hen kep on a residual suckling regimen unil 75 days of age, when hey were weaned compleely from milk. During he residual suckling period, lambs joined heir dams afer morning and evening milking for residue suckling for a period of 30 minues a a ime. The lacaing ewes were grazed from April o December and were kep and fed indoors hroughou he winer. Milk yield was recorded fornighly and TMY hrough he lacaion was calculaed by using he Fleischmann mehod: TMY y + (( y + y )/ ( )) where TMY is oal milk yield; is yield a firs milk = 1 1 i i+ 1 i+ 1 i recording; 1 is inerval beween lambing and firs recording; yi is yield of he record i and i is inerval beween record i and record ( i + 1), ( i = 1,..., k) (Ruiz e al., 000). Four differen mahemaical s were used o describe he lacaion curve: he Wood (Wood, 1967), he Inverse Polynomial, he Quadraic and he Cubic. b ( c ) b b The Wood : Y() = a e and peak yield for his is: Ymax = a( b / c) e which occurs a ime b / c ; Y = / a + b + c. In his equaion peak yield is: Y max = 1/ b + ac The Inverse Polynomial : () ( ) and he ime a peak yield: = a / c ; The Quadraic : Y () = a + b + c Y max ( b / c) + c( b / c). Peak yield for his is: = a + b, ime a peak yield: = b / c ; The Cubic : Y max = a + b Y = a + b + c + () d 3. Peak yield for his is: ( c c 3bd / 3d) + c( c c 3bd / 3d) + d( c c 3bd / 3d) 3 ime a peak yield: = c c 3bd / 3d where is he milk yield a day x from lambing, e is he base of naural logarihm, a, b, c and d are he Y () parameers which characerize he shape of he curve and which were esimaed from a nonlinear regression analysis using he Miniab program (Miniab, 1995). The parameers obained were used o calculae he prediced yields in he original equaions above. Residuals, defined as he absolue values of he difference beween he prediced yield and he real daa of daily milk yield were calculaed and hen he mean square predicion error (MSPE) for each lacaion curve fied, was calculaed and averaged for each. y 1,

3 Souh African Journal of Animal Science 005, 35 (4) 40 The main crieria used o compare s were he relaive size of he MSPE. Models resuling in smaller MSPE were considered o be superior, because less residual variaion remained in he daa and residuals were more randomly disribued (Papajcsik & Bodero, 1988). Furhermore, coefficiens of deerminaion (R ) adjused by he number of parameers in each and correlaion coefficiens beween TMY calculaed by he Fleischmann mehod and esimaed TMY from he s, were calculaed. Resuls and Discussion Toal milk yields calculaed by he Fleischmann mehod and esimaed TMY from he s in each age group are shown in Table 1. Milk producion was no affeced by age. The Wood and Inverse Polynomial s underesimaed TMY, bu he Quadraic slighly overesimaed TMY. Esimaed TMY according o he Cubic was very close o TMY calculaed by he Fleischmann mehod. However, differences beween s were no saisically significan. I can be said ha he s were adequae for describing TMY. Porolano e al. (1996) repored ha he Wood underesimaed he oal lacaion milk producion in Comissana sheep. Pollo & Goowine (000) repored ha some nonlinear funcions fied he daa beer han Wood s. On he oher hand, i has been repored ha he Wood equaion is no suiable for dairy sheep under grazing condiions in which environmenal effecs influence milk yields (Cara e al., 1995; Ruiz e al., 000). Table 1 Esimaed oal milk yields (TMY in kg) of unimproved Awassi ewes a differen ages (as year) using he differen s Ages TMY Wood Quadraic Inverse Cubic n (years) (Fleischmann) Polynomial ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± 5.77 Overall ± ± ± ± ±.46 The parameers of he s and heir comparison for he goodness of fi saisics o describe he lacaion curves of unimproved Awassi ewes are given in Table. Age effecs on parameers were no significan. The differences beween peak yields prediced by he s, excep for he difference beween he Wood and Cubic s, were significan (P < 0.01). The Inverse Polynomial overesimaed peak yield. Peak yields according o he Wood and Cubic s were similar. The Quadraic s peak yields were significanly lower han hose of he oher s. Day of peak yield averaged across age groups for he s, ranged from 10. o 56.4 days. The differences beween days of peak yield esimaed from he s were significan (P < 0.01). The Inverse Polynomial and he Wood esimaed he day of peak yield earlier han he oher s. Pollo & Goowine (000) repored he day of peak yield as 7 days for ypical lacaion curves of improved Awassi ewes. Daily milk yields of ewes raised under exensive sysems such as encounered in his sudy depend on grazing condiions. Peak yields may be delayed by unsuiable grazing condiions. Pasure in he sudy region is bes in May wih respec o grazing capaciy. Therefore, he peak yields of ewes in he sudy were especially noiceable a ha ime. The R values of he s ranged from 0.74 o The Cubic gave he highes R value followed by he Wood. The differences beween R values of he s were significan (P < 0.01) excep for he difference beween he Quadraic and he Inverse Polynomial s. Ruiz e al. (000) deermined he R values of six mahemaical s ranging from 0.93 o 0.97 and hey suggesed a nonlinear variable decay for describing he lacaion curve of Laxa sheep. However, Porolano e al. (1996) and Franci e al. (1999) repored lower R values for he Wood compared o his sudy.

4 Souh African Journal of Animal Science 005, 35 (4) 41 The differences beween MSPE values of he s were significan (P < 0.01) excep for he differences beween he Wood and he Quadraic s (Table ). The bes MSPE value was found using he Cubic and he Inverse Polynomial provided he wors MSPE value. Similarly, Ruiz e al. (000) repored ha he Inverse Polynomial gave he wors MSPE value. On he oher hand, he Inverse Polynomial has only been recognized as a good descripion for lacaions commencing in he summer monhs in dairy cale and for hose cows beginning a low milk yields and reaching peak earlier han average. On he oher hand, Pollo & Goowine (000) repored ha he Moran funcion ( a b c ( Y ) () ) d / = e always gave he lowes MSPE. Table Mean values and sandard errors for he parameers of s and comparison for he goodness of fi saisics o describe he lacaion curves of unimproved Awassi ewes Models Wood Quadraic Inverse Polynomial Cubic Ages a ± s a b ± s b Parameers c ± s c d ± s d Peak yield (ml) Day of peak yield R MSPE ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± Overall 0.44 ± ± ± a 5.36 a a 0.04 a 0.51 ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± Overall ± ± ± b b 0.74 b a 1.57 ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± Overall ± ± ± c 10.3 c b 0.16 b ± ± ± * ± ± ± * ± ± ± * ± ± ± * ± ± ± * ± ± ± * Overall ± ± ± * a 45.1 d c 0.00 c a, b, c The means wihin columns wih differen superscrip are significanly differen a P < 0.01 MSPE - mean square predicion error Correlaion coefficien beween TMY calculaed by he Fleischmann mehod and esimaed TMY from he s for age groups, are given in Table 3. All correlaion coefficiens were significan (P < 0.01). Esimaed TMY from he Cubic gave he highes correlaion coefficien (0.998) wih TMY calculaed by he Fleischmann mehod. These correlaion coefficiens can be used as a measure for deermining he goodness of fi of s.

5 Souh African Journal of Animal Science 005, 35 (4) 4 Table 3 Correlaion coefficien beween oal milk yield calculaed by he Fleischmann mehod and esimaed oal milk yield from he s * Ages Wood Model Quadraic Model Inverse Polynomial Model Cubic Model Overall * All correlaion coefficiens are significan (P < 0.01) Conclusion The Cubic showed he bes fi o he daa colleced from unimproved Awassi ewes and allowed a suiable descripion of he shape of he lacaion curve. Toal milk yield esimaed by he Cubic was similar o he esimaion made by he Fleischmann mehod. Age effecs on TMY and parameers were no significan. Acknowledgmens This research was funded in par by a gran from he Universiy of Selcuk (BAP), Konya, Turkey. References Cappio-Borlino, A., Maccioa, N.P.P. & Pulina, G., The shape of Sarda ewe lacaion curve analyzed by a Comparmenal. Lives. Prod. Sci. 51, Cappio-Borlino, A., Pulina, G. & Rossi, G., A non-linear modificaion of Wood s equaion fied o lacaion curves of Sardinian dairy ewes. Small Rumin. Res. 18, Cappio-Borlino, A., Pulina, G., Cannas, A. & Rossi, G., The curve of lacaion of Sardinian sheep adaped o one funcion of range ype. Zoo. Nur. Anim. 15, Cara, A., Sonna, S.R. & Casu, S., Esimaing lacaion curves and seasonal effecs for milk, fa and proein in Sarda dairy sheep wih a es day. Lives. Prod. Sci. 44, Chang, Y.M., Rekaya, R. Gionala, D. & Thomas, D.L., 001. Geneic variaion of lacaion curves in dairy sheep: A Bayesian analysis of Wood s funcion. Lives. Prod. Sci. 71, Cobby, J.M. & Le Du, Y.L.P., On fiing curves o lacaion daa. Anim. Prod. 6, Dijksra, J., France, J., Dhonoa, M.S., Maas, J.A., Hanigan, M.D., Rook, A.J. & Beever, D.E., A o describe growh paerns of he mammary gland during pregnancy and lacaion. J. Dairy Sci. 60, Franci, O., Pugliese, C., Acciaioli, A., Parisi, G. & Lucifero, M., Applicaion of wo s o lacaion curves of Masese ewes. Small Rumin. Res. 31, Goodal, E.A. & Spreavak, D., A Bayesian esimaion of he lacaion curve of a dairy cow. Anim. Prod. 40, Groenewald, P.C.N., Ferreira, A.V., Van der Merwe, H.J. & Slippers, S.C., A mahemaical for describing and predicing he lacaion curve of Merino ewes. Anim. Sci. 61, Grossman, M. & Koops, W.J., Muliphasic analysis of lacaion curves in dairy cale. J. Dairy Sci. 71, Kaymakçı, M., 004. Sheep Breeding Manual. TİGEM, 004- (in Turkish). Miniab, Miniab reference manual, Release 10 Xra. Miniab Inc. Sae Coll., PA 16801, USA. Moran, S.V. & Gnanasakhy, A., A new approach o he mahemaical formulaion of lacaion curves. Anim. Prod. 49, Neal, H.D. & Thornley, J.H.M., The lacaion curve in cale: a mahemaical of he mammary gland. J. Agric. Sci., Camb. 101,

6 Souh African Journal of Animal Science 005, 35 (4) 43 Papajcsik, I.A. & Bodero, J., Modelling lacaion curves of Friesian cows in a subropical climae. Anim. Prod. 47, Pollo, G.E., Describing he lacaion of dairy animals. Proc. Br. Soc. Anim. Sci. p. 197 (Absr.). Pollo, G.E., 000. A biological approach o lacaion curve analyses for milk yield. J. Dairy Sci. 83, Pollo, G.E. & Goowine, E., 000. Appropriae mahemaical s for describing he complee lacaion of dairy sheep. Anim. Sci. 71, Porolano, B., Spaafora, F., Bono, G., Margioa, S. Todoro. M., Oroleva, V. & Leo, G., Applicaion of he Wood o lacaion curves of Comissana sheep. Small Rumin. Res. 4, Rook, A.J., France, J. & Dhonoa, M.S., On he mahemaical descripion of lacaion curves. J. Agric. Sci., Camb. 11, Ruiz, R., Oregui, L.M. & Herrero, M., 000. Comparison of s for describing he lacaion curve of Laxa sheep and an analysis of facors affecing milk yield. J. Dairy Sci. 83, Torres-Hernandez, G. & Hohenboken, W.D., Biomeric properies of lacaions in ewes raising single or win lambs. Anim. Prod. 30, Wilmink, J.B.M., Adjusmen of es day milk, fa and proein yield for age, season and sage of lacaion. Lives. Prod. Sci. 16, Wood, P.D.P., Algebraic of lacaion curve in cale. Naure 16,

Prediction of 100-d and 305-d Milk Yields in a Multibreed Dairy Herd in Thailand Using Monthly Test-Day Records 1/

Prediction of 100-d and 305-d Milk Yields in a Multibreed Dairy Herd in Thailand Using Monthly Test-Day Records 1/ Predicion of -d and 35-d Milk Yields in a Mulibreed Dair Herd in Thailand Using Monhl Tes-Da Records / Skorn Koonawooririron *, Mauricio A. Elzo /, Sornhep Tumwasorn, and Wiro Sinala 3/ Deparmen of Animal

More information

Egg production curve fitting using nonlinear models for selected and nonselected lines of White Leghorn hens

Egg production curve fitting using nonlinear models for selected and nonselected lines of White Leghorn hens Egg producion curve fiing using nonlinear models for seleced and nonseleced lines of Whie Leghorn hens R. P. Savegnago * V. A. R. Cruz * S. B. Ramos * S. L. Caeano * G. S. Schmid M. C. Ledur L. El Faro

More information

DETERMINATION OF THE BEST NONLINEAR MODEL FOR DESCRIBING COMPLETE LACTATION OF AKKARAMAN AND GERMAN BLACKHEADED MUTTON X AKKARAMAN CROSSBREED (F 1

DETERMINATION OF THE BEST NONLINEAR MODEL FOR DESCRIBING COMPLETE LACTATION OF AKKARAMAN AND GERMAN BLACKHEADED MUTTON X AKKARAMAN CROSSBREED (F 1 247 Bulgarian Journal of Agricultural Science, 16 (No 2) 2010, 247-251 Agricultural Academy DETERMINATION OF THE BEST NONLINEAR MODEL FOR DESCRIBING COMPLETE LACTATION OF AKKARAMAN AND GERMAN BLACKHEADED

More information

Radiotelemetric Evaluation of the Effect of Horticultural Practices on Pine and Meadow Voles in Apple Orchards: I. Rotary Mowing

Radiotelemetric Evaluation of the Effect of Horticultural Practices on Pine and Meadow Voles in Apple Orchards: I. Rotary Mowing Universiy of Nebraska - Lincoln DigialCommons@Universiy of Nebraska - Lincoln Easern Pine and Meadow Vole Symposia Wildlife Damage Managemen, Inerne Cener for March 1981 Radioelemeric Evaluaion of he Effec

More information

Livestock management at northern latitudes. Potential economic effects of climate change in sheep farming

Livestock management at northern latitudes. Potential economic effects of climate change in sheep farming Livesock managemen a norhern laiudes. Poenial economic effecs of climae change in sheep farming Anne B. Johannesen Deparmen of Economics Norwegian Universiy of Science and Technology (NTNU) Anders Nielsen

More information

Wilson Bull., 92(3), 1980, pp

Wilson Bull., 92(3), 1980, pp GENERAL NOTES Wilson Bull., 92(3), 1980, pp. 376-381 Growh and developmen of major body componens in he Monk Parakee.- The growh raes of a considerable number of bird species have been summarized (Ricklefs,

More information

The economics of sheep farming at northern latitudes. Potential effects of climate change

The economics of sheep farming at northern latitudes. Potential effects of climate change The economics of sheep farming a norhern laiudes. Poenial effecs of climae change Absrac The paper sudies he economy and ecology of sheep farming when climae change and uncerainy may affec vegeaion quaniy.

More information

WORKING PAPER SERIES

WORKING PAPER SERIES ISSN 1503-299 WORKING PAPER SERIES No. 4/2013 Livesock managemen a norhern laiudes. Poenial economic effecs of climae change in sheep farming Anne Borge Johannesen Deparmen of Economics, Norwegian Universiy

More information

Interpretative reading of the antibiogram Andreassen, Hans Steen; Falborg, Alina Zalounina; Paul, Mical; Sanden, Line Rugholm; Leibovici, Leonard

Interpretative reading of the antibiogram Andreassen, Hans Steen; Falborg, Alina Zalounina; Paul, Mical; Sanden, Line Rugholm; Leibovici, Leonard Aalborg Universie Inerpreaive reading of he anibiogram Andreassen, Hans Seen; Falborg, Alina Zalounina; Paul, Mical; Sanden, Line Rugholm; Leibovici, Leonard Published in: Arificial Inelligence in Medicine

More information

GROWTH AND DEVELOPMENT OF ECHINOCOCCUS MULTILOCULARIS IN EXPERIMENTALLY INFECTED CATS

GROWTH AND DEVELOPMENT OF ECHINOCOCCUS MULTILOCULARIS IN EXPERIMENTALLY INFECTED CATS Tile GROWTH AND DEVELOPMENT OF ECHINOCOCCUS MULTILOCULARI INFECTED CATS Auhor(s)KAMIYA Masao; OOI Hong-Kean; OKU Yuzaburo; YAGI CiaionJapanese Journal of Veerinary Research 33(3-4): 13 Issue Dae 1985-10-18

More information

SOME CHARACTERISTICS OF THE IMMUNE RESPONSE TO SPOROZOITES OF SIMIAN AND HUMAN MALARIA

SOME CHARACTERISTICS OF THE IMMUNE RESPONSE TO SPOROZOITES OF SIMIAN AND HUMAN MALARIA SOME CHARACTERISTICS OF THE IMMUNE RESPONSE TO SPOROZOITES OF SIMIAN AND HUMAN MALARIA Ruh S. Nussenzweig, M.D., Ph.D.;2 and David Chen, M.A., Ph.D.3 The ques for a vaccine agains malaria has focused considerable

More information

STUDIES ON THE GROWTH OF THE DESERT TORTOISE (TESTUDO SULCATA) IN SUDAN: CHANGES IN MORPHOMETRICS AND BODY WEIGHT FROM HATCHING TO ONE YEAR (O+)

STUDIES ON THE GROWTH OF THE DESERT TORTOISE (TESTUDO SULCATA) IN SUDAN: CHANGES IN MORPHOMETRICS AND BODY WEIGHT FROM HATCHING TO ONE YEAR (O+) HRPTOLOGICAL JOURNAL, Vol. I, pp. 280-284 (1988) 280 STUDIS ON TH GROWTH OF TH DSRT TORTOIS (TSTUDO SULCATA) IN SUDAN: CHANGS IN MORPHOMTRICS AND BODY WIGHT FROM HATCHING TO ON YAR (O+) z. N. MAHMOUD AND

More information

Influence of some Genetic and Non-Genetic Factors on Total Milk Yield and Lactation Period in Iraqi Awassi Sheep

Influence of some Genetic and Non-Genetic Factors on Total Milk Yield and Lactation Period in Iraqi Awassi Sheep Research Article Influence of some Genetic and Non-Genetic Factors on Total Milk Yield and Lactation Period in Iraqi Awassi Sheep Firas Rashad Al-Samarai 1, Yehya Khalid Abdulrahman 2, Fatten Ahmad Mohammed

More information

Comparison of Mathematical Models Applied to F1 Dairy Sheep Lactations in Organic Farm and Environmental Factors Affecting Lactation Curve Parameter

Comparison of Mathematical Models Applied to F1 Dairy Sheep Lactations in Organic Farm and Environmental Factors Affecting Lactation Curve Parameter 1119 Asian Australas. J. Anim. Sci. Vol. 26, No. 8 : 1119-1126 August 2013 http://dx.doi.org/10.5713/ajas.2013.13096 www.ajas.info pissn 1011-2367 eissn 1976-5517 Comparison of Mathematical Models Applied

More information

MURIEL NEY-NIFLE*, CARLOS BERNSTEIN*, JUAN C. REBOREDA and ALEX KACELNIK

MURIEL NEY-NIFLE*, CARLOS BERNSTEIN*, JUAN C. REBOREDA and ALEX KACELNIK Ecology 005 74, Populaion dynamics and avian brood parasiism: Blackwell Publishing, Ld. persisence and invasions in a hree-species sysem MURIEL NEY-NIFLE*, CARLOS BERNSTEIN*, JUAN C. REBOREDA and ALEX

More information

Original Research Article

Original Research Article MICRONEEDLING WITH PLATELET-RICH PLASMA VERSUS MICRONEEDLING WITH TOPICAL 5% MINOXIDIL IN PATIENTS WITH ANDROGENETIC ALOPECIA- A COMPARATIVE STUDY Kallappa C. Herakal 1, Pehani Parag Vallabhbhai 2, Karjigi

More information

Comparison of models for describing the lactation curve of Awassi, Morkaraman and Tushin sheep

Comparison of models for describing the lactation curve of Awassi, Morkaraman and Tushin sheep Archiv Tierzucht 53 (2010) 4, 447-456, ISSN 0003-9438 Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany Comparison of models for describing the lactation curve of Awassi, Morkaraman and Tushin

More information

1 of 9 7/1/10 2:08 PM

1 of 9 7/1/10 2:08 PM LIFETIME LAMB AND WOOL PRODUCTION OF TARGHEE OR FINN-DORSET- TARGHEE EWES MANAGED AS A FARM OR RANGE FLOCK N. Y. Iman and A. L. Slyter Department of Animal and Range Sciences SHEEP 95-4 Summary Lifetime

More information

AUTUMN AND SPRING-LAMBING OF MERINO EWES IN SOUTH-WESTERN VICTORIA

AUTUMN AND SPRING-LAMBING OF MERINO EWES IN SOUTH-WESTERN VICTORIA AUTUMN AND SPRING-LAMBING OF MERINO EWES IN SOUTH-WESTERN VICTORIA J. W. MCLAUGHLIN* Summary In each of four years, ewes lambing in the spring (September-October) had a higher proportion of multiple births

More information

An institutional perspective on externalities. The Nordic wolf re-colonization

An institutional perspective on externalities. The Nordic wolf re-colonization An insiuional perspecive on exernaliies. The Nordic wolf re-colonizaion Eivind Egeland Aronsen Aronsen Consuling N-7020 Trondheim, Norway Anders Skonhof Dep. of Economics Norwegian Universiy of Science

More information

PORCINE CARCASSES AND CUTS

PORCINE CARCASSES AND CUTS ECE/AGRI/135 ECONOMIC COMMISSION FOR EUROPE UN/ECE STANDARD FOR PORCINE CARCASSES AND CUTS Recommended by he Working Pary on Sandardizaion of Perishable Produce and Qualiy Developmen UNITED NATIONS New

More information

INTERNEURONES INVOLVED IN STRIDULATORY PATTERN GENERATION IN THE GRASSHOPPER CHORTHIPPUS MOLLIS (CHARP.)

INTERNEURONES INVOLVED IN STRIDULATORY PATTERN GENERATION IN THE GRASSHOPPER CHORTHIPPUS MOLLIS (CHARP.) The Journal of Experimenal Biology 199, 653 662 (1996) Prined in Grea Briain The ompany of Biologiss Limied 1996 JEB125 653 ITEREUROES IVOLVE I STRIULATORY PATTER GEERATIO I THE GRASSHOPPER HORTHIPPUS

More information

RELATIONSHIP BETWEEN GROWTH OF SUFFOLK RAMS ON CENTRAL PERFORMANCE TEST AND GROWTH OF THEIR PROGENY

RELATIONSHIP BETWEEN GROWTH OF SUFFOLK RAMS ON CENTRAL PERFORMANCE TEST AND GROWTH OF THEIR PROGENY RELATIONSHIP BETWEEN GROWTH OF SUFFOLK RAMS ON CENTRAL PERFORMANCE TEST AND GROWTH OF THEIR PROGENY D. F. WALDRON, D. L. THOMAS, J. M. STOOKEY and R. L. FERNANDO, USA University of Illin o is, Department

More information

THE EFFECT OF IBR/PI3 AND PASTEURELLA VACCINATION ON THE MORTALITY RATE OF HIGH PERCENTAGE EAST FRIESIAN LAMBS

THE EFFECT OF IBR/PI3 AND PASTEURELLA VACCINATION ON THE MORTALITY RATE OF HIGH PERCENTAGE EAST FRIESIAN LAMBS THE EFFECT OF IBR/PI3 AND PASTEURELLA VACCINATION ON THE MORTALITY RATE OF HIGH PERCENTAGE EAST FRIESIAN LAMBS David L. Thomas 1, Yves M. Berger 2, Brett M. McKusick 1, and Ralph H. Stauffacher 3 1 Department

More information

Factors affecting the milk yield and composition of Rahmani and Chios sheep

Factors affecting the milk yield and composition of Rahmani and Chios sheep Global Journal of Dairy Farming and Milk Production ISSN: xxxx-xxxx Vol. 1 (1), pp. 053-059, November, 2013. Global Science Research Journals Full Length Research Paper Factors affecting the milk yield

More information

A COMPARISON OF THE PALATES OF PERMIAN AND TRIASSIC DICYNODONTS

A COMPARISON OF THE PALATES OF PERMIAN AND TRIASSIC DICYNODONTS A COMPARISON OF THE PALATES OF PERMIAN AND TRIASSIC DICYNODONTS By A. R. I. Cruickshank ABSTRACT Whils cmparing he skulls f sme Triassic dicyndns wih Permian members f he family, i was ned ha he inerperygid

More information

7. Flock book and computer registration and selection

7. Flock book and computer registration and selection Flock book/computer registration 7. Flock book and computer registration and selection Until a computer service evolved to embrace all milk-recorded ewes in Israel and replaced registration in the flock

More information

OPPORTUNITIES FOR GENETIC IMPROVEMENT OF DAIRY SHEEP IN NORTH AMERICA. David L. Thomas

OPPORTUNITIES FOR GENETIC IMPROVEMENT OF DAIRY SHEEP IN NORTH AMERICA. David L. Thomas OPPORTUNITIES FOR GENETIC IMPROVEMENT OF DAIRY SHEEP IN NORTH AMERICA David L. Thomas Department of Meat and Animal Science University of Wisconsin-Madison Sheep milk, as a commodity for human consumption,

More information

Josefina de Combellas, N Martinez and E Gonzalez. Instituto de Producción Animal, Facultad de Agronomia, Universidad Central de Venezuela, Maracay

Josefina de Combellas, N Martinez and E Gonzalez. Instituto de Producción Animal, Facultad de Agronomia, Universidad Central de Venezuela, Maracay Trop Anim Prod 1980 5:3 261 A STUDY OF FACTORS WHICH INFLUENCE BIRTH AND WEANING WEIGHT IN LAMBS Josefina de Combellas, N Martinez and E Gonzalez Instituto de Producción Animal, Facultad de Agronomia,

More information

Unit E Segments of the Animal Industry. Lesson 2 Exploring the Sheep and Goat Industry

Unit E Segments of the Animal Industry. Lesson 2 Exploring the Sheep and Goat Industry Unit E Segments of the Animal Industry Lesson 2 Exploring the Sheep and Goat Industry 1 Terms Buck Cashmere Chammy Confinement Doe Ewe Kid Kidding Lamb Lambing Mohair Mutton Ram Wether Wool Yearling 2

More information

Lactational and reproductive effects of melatonin in lactating dairy ewes mated during spring

Lactational and reproductive effects of melatonin in lactating dairy ewes mated during spring 59 th Meeting EAAP, 24-27 August 2008, Vilnius, Lithuania Session 24: Free communications on Sheep and Goat Production Lactational and reproductive effects of melatonin in lactating dairy ewes mated during

More information

PROJECT SUMMARY. Optimising genetics, reproduction and nutrition of dairy sheep and goats

PROJECT SUMMARY. Optimising genetics, reproduction and nutrition of dairy sheep and goats PROJECT SUMMARY Optimising genetics, reproduction and nutrition of dairy sheep and goats Introduction The Australian dairy sheep industry currently has six well established businesses, all of which are

More information

LIFETIME PRODUCTION OF 1/4 AND 1/2 FINNSHEEP EWES FROM RAMBOUILLET, TARGHEE AND COLUMBIA DAMS AS AFFECTED BY NATURAL ATTRITION ABSTRACT

LIFETIME PRODUCTION OF 1/4 AND 1/2 FINNSHEEP EWES FROM RAMBOUILLET, TARGHEE AND COLUMBIA DAMS AS AFFECTED BY NATURAL ATTRITION ABSTRACT LIFETIME PRODUCTION OF 1/4 AND 1/2 FINNSHEEP EWES FROM RAMBOUILLET, TARGHEE AND COLUMBIA DAMS AS AFFECTED BY NATURAL ATTRITION S. K. Ercanbrack and A. D. Knight 1 U.S. Department of Agriculture 2, Dubois,

More information

AN INITIATIVE OF. The New Ewe. Andrew Kennedy EVENT PARTNERS: EVENT SUPPORTERS:

AN INITIATIVE OF. The New Ewe. Andrew Kennedy EVENT PARTNERS: EVENT SUPPORTERS: AN INITIATIVE OF The New Ewe Andrew Kennedy EVENT PARTNERS: EVENT SUPPORTERS: Goal posts have been shifted A responsible New Ewe Growth Wool Reproduction Nutrition Parasites Stocking rate Supp feed Labour

More information

History and development of an experimental bobwhite management area in southern Iowa

History and development of an experimental bobwhite management area in southern Iowa Rerospecive Theses and Disseraions Iowa Sae Universiy Capsones, Theses and Disseraions 1940 Hisory and developmen of an experimenal bobwhie managemen area in souhern Iowa Earl Sanders Iowa Sae College

More information

Adjustment Factors in NSIP 1

Adjustment Factors in NSIP 1 Adjustment Factors in NSIP 1 David Notter and Daniel Brown Summary Multiplicative adjustment factors for effects of type of birth and rearing on weaning and postweaning lamb weights were systematically

More information

Evaluating the performance of Dorper, Damara, Wiltshire Horn and Merino breeds in the low rainfall wheatbelt of Western Australia Tanya Kilminster

Evaluating the performance of Dorper, Damara, Wiltshire Horn and Merino breeds in the low rainfall wheatbelt of Western Australia Tanya Kilminster Evaluating the performance of Dorper, Damara, Wiltshire Horn and Merino breeds in the low rainfall wheatbelt of Western Australia Tanya Kilminster Department of Agriculture and Food WA, Merredin Email:

More information

MILK AND LAMB PRODUCTION OF EAST FRIESIAN-CROSS EWES IN NORTHWESTERN WISCONSIN

MILK AND LAMB PRODUCTION OF EAST FRIESIAN-CROSS EWES IN NORTHWESTERN WISCONSIN MILK AND LAMB PRODUCTION OF EAST FRIESIAN-CROSS EWES IN NORTHWESTERN WISCONSIN David L. Thomas 1, Yves M. Berger 2, and Brett C. McKusick 1 Department of Animal Sciences 1 Spooner Agricultural Research

More information

Key Information. Mountain Hill Vs Lowland Production. Breeding Strategy

Key Information. Mountain Hill Vs Lowland Production. Breeding Strategy Key Information Short day breeder (come into heat in autumn as the day length decreases) Length of oestrus = 17 day cycle Duration of oestrus = 36 hours Length of gestation = 147 days or 5 months Can birth

More information

of Columbia and Targhee Ewes

of Columbia and Targhee Ewes The Effects of Age at First Lambing on Production and Longevity of Columbia and Targhee Ewes J1JN?7 cu Lt/3f-,, ON S1_ (P I 1 i Technical Bulletin 138 AGRICULTURAL EXPERIMENT STATION Oregon State University

More information

PREDICTION OF LAMBING DATE BASED ON CLINICAL EXAMINATION PRIOR TO PARTURITION IN EWES

PREDICTION OF LAMBING DATE BASED ON CLINICAL EXAMINATION PRIOR TO PARTURITION IN EWES PREDICTION OF LAMBING DATE BASED ON CLINICAL EXAMINATION PRIOR TO PARTURITION IN EWES J.V. Viljoen Grootfontein Agricultural Development Institute, Private Bag X529, Middelburg (EC), 5900 Email: HoggieV@daff.gov.za

More information

INFLUENCE OF FEED QUALITY ON THE EXPRESSION OF POST WEANING GROWTH ASBV s IN WHITE SUFFOLK LAMBS

INFLUENCE OF FEED QUALITY ON THE EXPRESSION OF POST WEANING GROWTH ASBV s IN WHITE SUFFOLK LAMBS INFLUENCE OF FEED QUALITY ON THE EXPRESSION OF POST WEANING GROWTH ASBV s IN WHITE SUFFOLK LAMBS Introduction Murray Long ClearView Consultancy www.clearviewconsulting.com.au Findings from an on farm trial

More information

WHEN YOU THINK of sheep, you probably think of

WHEN YOU THINK of sheep, you probably think of Breeds of Sheep and Goats WHEN YOU THINK of sheep, you probably think of white, round, wooly little animals that produce fiber for clothing. You might even think of meat for a meal or special occasion.

More information

NUTRITIONAL STRATEGIES TO IMPROVE LACTATION PERSISTENCY IN DAIRY EWES. Antonello Cannas, Anna Nudda, Giuseppe Pulina

NUTRITIONAL STRATEGIES TO IMPROVE LACTATION PERSISTENCY IN DAIRY EWES. Antonello Cannas, Anna Nudda, Giuseppe Pulina NUTRITIONAL STRATEGIES TO IMPROVE LACTATION PERSISTENCY IN DAIRY EWES INTRODUCTION Antonello Cannas, Anna Nudda, Giuseppe Pulina Dipartimento di Scienze Zootecniche University of Sassari Sardinia, Italy

More information

Canine Parvovirus Infection in South American Canids

Canine Parvovirus Infection in South American Canids ^1. '' la Reprined from he JOURNAL O THE AERICAN VETERINARY EDICAL ASSOCIATION, Vol. 177, No. 9, Pages 779-78. American Veerinary edical Associaion, 1980. All Righs Reserved. Canine Parvovirus Infecion

More information

Comparison of Weigh-Suckle-Weigh and Machine Measuring Ewe Milk Production 1,2

Comparison of Weigh-Suckle-Weigh and Machine Measuring Ewe Milk Production 1,2 Comparison of Weigh-Suckle-Weigh and Machine Measuring Ewe Milk Production 1,2 Milking for M. E. Benson 3, M. J. Henry 4, and R. A. Cardellino 5 Department of Animal Science, Michigan State University,

More information

RELATIONSHIPS AMONG WEIGHTS AND CALVING PERFORMANCE OF HEIFERS IN A HERD OF UNSELECTED CATTLE

RELATIONSHIPS AMONG WEIGHTS AND CALVING PERFORMANCE OF HEIFERS IN A HERD OF UNSELECTED CATTLE RELATIONSHIPS AMONG WEIGHTS AND CALVING PERFORMANCE OF HEIFERS IN A HERD OF UNSELECTED CATTLE T. C. NELSEN, R. E. SHORT, J. J. URICK and W. L. REYNOLDS1, USA SUMMARY Two important traits of a productive

More information

Improving efficiencies in small scale sheep production Welcome

Improving efficiencies in small scale sheep production Welcome Improving efficiencies in small scale sheep production Welcome Newlands Farm, Darvel 14 th October 2017 Programme Introduction Sheep Terminology Breeds The Production Cycle Tupping & Pregnancy Feeding

More information

LAMB GROWTH AND EWE PRODUCTION FOLLOWING ANTHELMINTIC DRENCHING BEFORE AND AFTER LAMBING

LAMB GROWTH AND EWE PRODUCTION FOLLOWING ANTHELMINTIC DRENCHING BEFORE AND AFTER LAMBING Proc. Aust. Soc. Anim. Prod. (1972) 9: 39 2 LAMB GROWTH AND EWE PRODUCTION FOLLOWING ANTHELMINTIC DRENCHING BEFORE AND AFTER LAMBING J. R. DONNELLY*, G. T. McKINNEY* and F. H. W. MORLEY* Summary Thiabendazole

More information

OPP ERADICATION UPDATE. Cindy Wolf DVM Co-chair ASI Animal Health Committee

OPP ERADICATION UPDATE. Cindy Wolf DVM Co-chair ASI Animal Health Committee OPP ERADICATION UPDATE Cindy Wolf DVM Co-chair ASI Animal Health Committee Does it really matter if sheep have OPP? Some report no difference in production between positives and negatives usually because

More information

GROWTH OF LAMBS IN A SEMI-ARID REGION AS INFLUENCED BY DISTANCE WALKED TO WATER

GROWTH OF LAMBS IN A SEMI-ARID REGION AS INFLUENCED BY DISTANCE WALKED TO WATER GROWTH OF LAMBS IN A SEMI-ARID REGION AS INFLUENCED BY DISTANCE WALKED TO WATER V. R. SQUIRES* Summary A feature of pastoral zone grazing systems is the long distances which separate the grazing area from

More information

Lower body weight Lower fertility Lower fleece weight (superfine) (fine)

Lower body weight Lower fertility Lower fleece weight (superfine) (fine) Generally, finer wool merino sheep are best suited to cooler areas Major Sheep Breeds In Australia Merino (75%) Border Leicester Merino x Border Leicester (12%) Suffolk Cheviot Poll Dorset Romney Merino

More information

Udder conformation and its heritability in the Assaf (Awassi East Friesian) cross of dairy sheep in Israel

Udder conformation and its heritability in the Assaf (Awassi East Friesian) cross of dairy sheep in Israel Udder conformation and its heritability in the Assaf (Awassi East Friesian) cross of dairy sheep in Israel E. Gootwine, B. Alef, S. Gadeesh To cite this version: E. Gootwine, B. Alef, S. Gadeesh. Udder

More information

Lot 1-4 ewes, 5 to 6 years of age Lot 2-8 ewes, 4 to 6 years of age

Lot 1-4 ewes, 5 to 6 years of age Lot 2-8 ewes, 4 to 6 years of age Lot 1-4 ewes, 5 to 6 years of age Lot 2-8 ewes, 4 to 6 years of age Lot 3-12 ewes, Wisconsin buyers only, no out-of-state health papers, tested positive for Caseous Lymphadenitis (CL), 5 to 7 years of

More information

Regulations and Procedures for the Registration of Dorper/White Dorper Sheep

Regulations and Procedures for the Registration of Dorper/White Dorper Sheep American Dorper Sheep Breeders Society Regulations and Procedures for the Registration of Dorper/White Dorper Sheep Section A: Classification of Dorper/White Dorper Sheep For Recordation Purposes (ewes

More information

Best Practices for Managing Awassi Sheep. Sheep Selection 6

Best Practices for Managing Awassi Sheep. Sheep Selection 6 Best Practices for Managing Awassi Sheep 6 Best Practices for Managing Awassi Sheep 6- The information in this booklet was compiled by: Adnan Termanini, Aynalem Haile and Barbara Rischkowsky Layout and

More information

CLUSTERING AND GENETIC ANALYSIS OF BODY RESERVES CHANGES THROUGHOUT PRODUCTIVE CYCLES IN MEAT SHEEP

CLUSTERING AND GENETIC ANALYSIS OF BODY RESERVES CHANGES THROUGHOUT PRODUCTIVE CYCLES IN MEAT SHEEP CLUSTERING AND GENETIC ANALYSIS OF BODY RESERVES CHANGES THROUGHOUT PRODUCTIVE CYCLES IN MEAT SHEEP MACE Tiphaine 1, Gonzalez-Garcia E. 2, Carriere F. 3, Douls S. 3, Foulquié D. 3, Robert-Granié C. 1,

More information

PRACTICAL APPLICATION OF ARTIFICIAL INSEMINATION IN CONJUNCTION WITH SYNCHRONIZATION OF HEAT CYCLE IN THE EWE

PRACTICAL APPLICATION OF ARTIFICIAL INSEMINATION IN CONJUNCTION WITH SYNCHRONIZATION OF HEAT CYCLE IN THE EWE Proc. Aust. Soc. Anim. Prod. (1972) 9= 171 PRACTICAL APPLICATION OF ARTIFICIAL INSEMINATION IN CONJUNCTION WITH SYNCHRONIZATION OF HEAT CYCLE IN THE EWE P. T. WALKER* Summary Results of artificial insemination

More information

University of Wyoming, Laramie

University of Wyoming, Laramie CROSSBRED EWES COMPARED WITH EWES OF PARENT BREEDS FOR WOOL AND LAMB PRODUCTION 1 3I. P. BOTKIN AND LEON PA!JLES University of Wyoming, Laramie ATING of black-faced rams to white- M faced, wool-type ewes

More information

Data presented in this publication are those available on the on-line database at 10 May 2009

Data presented in this publication are those available on the on-line database at 10 May 2009 Data presented in this publication are those available on the on-line database at 10 May 2009 Results for the years 2008-2009 For more up-dated data, please consult the on-line database at: www.icar.org.

More information

Table1. Target lamb pre-weaning daily live weight gain from grazed pasture

Table1. Target lamb pre-weaning daily live weight gain from grazed pasture Grassland Management for High Lamb Performance Tim Keady and Noel McNamara Animal & Grassland Research & Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway. To improve the financial margin

More information

CHROMID. Reading Guide

CHROMID. Reading Guide CHROMID Reading Guide CHROMID Reading Guide 2018 biomérieux, Inc. BIOMERIEUX, he BIOMERIEUX logo, and CHROMID are used, pending and/or regisered rademarks belonging o biomérieux, one of is subsidiaries,

More information

FARM INNOVATION Final Report

FARM INNOVATION Final Report FARM INNOVATION 2017-2018 Final Report Applicant: Sheep Producers Association of Nova Scotia (SPANS) Brad McCallum, Executive Director 60 Research Drive Bible Hill, NS B6L 2R2 Project Title: Project number:

More information

Moved the file to the new template (v2017_08_29).

Moved the file to the new template (v2017_08_29). Date of Change July 2017 July 2017 July 2017 July 2017 July 2017 August 2017 August 2017 October 2017 October 2017 November 2017 Nature of Change Moved from Section 2.2 and 2.3 to Section 16 covering just

More information

Milk yield measured by oxytocin plus hand milking and weigh-suckle-weigh methods in ewes originating from local crossbred in Turkey

Milk yield measured by oxytocin plus hand milking and weigh-suckle-weigh methods in ewes originating from local crossbred in Turkey Milk yield measured by oxytocin plus hand milking and weigh-suckle-weigh methods in ewes originating from local crossbred in Turkey N. ÜNAL *, F. ATASOY, H. AKÇAPINAR, S. KOÇAK, A. YAKAN, H. EROL and M.

More information

OVULATION RATE AND LITTER SIZE OF BARBADOS, TARGHEE AND CROSSBRED EWES'

OVULATION RATE AND LITTER SIZE OF BARBADOS, TARGHEE AND CROSSBRED EWES' OVULATION RATE AND LITTER SIZE OF BARBADOS, TARGHEE AND CROSSBRED EWES' G. E. Bradford and J. F. Quirke 2 University of California 3, Davis 95616 ABSTRACT Ovulation rate was measured in Barbados Blackbelly

More information

Breeding aims to develop sheep milk production

Breeding aims to develop sheep milk production Breeding aims to develop sheep milk production Kiss B., Kovacs P., Székelyhidi T., Kukovics S. in Gabiña D. (ed.), Bodin L. (ed.). Data collection and definition of objectives in sheep and goat breeding

More information

Redacted for privacy

Redacted for privacy AN ABSTRACT OF THE THESIS OF GLAFIRO TORRES-HERNANDEZ for the degree of DOCTOR OF PHILOSOPHY in ANIMAL SCIENCE (Breeding & Genetics) presented on 8/23/79 TITLE: MILK PRODUCTION AND PROGENY GROWTH IN CROSSBRED

More information

Time of lambing analysis - Crossbred Wagga NSW

Time of lambing analysis - Crossbred Wagga NSW Page 1 of 36 04 Aug 2010 14:47 Time of lambing analysis - Crossbred ewes @ Wagga NSW 1/01/1980-31/12/2008 Analysis Summary Time of lambing report Gross margin table Long term averages for financial year

More information

COMPARISON OF THE PERFORMANCE OF PROGENY FROM A MERINO SIRE EXTENSIVELY USED IN THE LATE 1980s AND TWO WIDELY USED MERINO SIRES IN 2012

COMPARISON OF THE PERFORMANCE OF PROGENY FROM A MERINO SIRE EXTENSIVELY USED IN THE LATE 1980s AND TWO WIDELY USED MERINO SIRES IN 2012 COMPARISON OF THE PERFORMANCE OF PROGENY FROM A MERINO SIRE EXTENSIVELY USED IN THE LATE 1980s AND TWO WIDELY USED MERINO SIRES IN 2012 W.J. Olivier 1# & J.J. Olivier 2 1 Grootfontein Agricultural Development

More information

Turning the Tide: How to Improve Antibiotic Use and Stop a Killer

Turning the Tide: How to Improve Antibiotic Use and Stop a Killer Turning he Tide: How o Improve Anibioic Use and Sop a Killer Melinda. Joyce, Pharm.D., FAPhA, FAHE ommonwealh Healh orporaion Bowling Green, Kenucky mbjoyce@chc.ne Timohy P. Gauhier, Pharm.D., BPS-AQ ID

More information

FACTORS AFFECTING MILK TRAITS AND UDDER HEALTH IN EAST FRIESIAN MILK SHEEP. Christian Scharch, Reinhard Süß and Rolf-Dieter Fahr

FACTORS AFFECTING MILK TRAITS AND UDDER HEALTH IN EAST FRIESIAN MILK SHEEP. Christian Scharch, Reinhard Süß and Rolf-Dieter Fahr Summary FACTORS AFFECTING MILK TRAITS AND UDDER HEALTH IN EAST FRIESIAN MILK SHEEP Christian Scharch, Reinhard Süß and Rolf-Dieter Fahr Institute of Animal Breeding and Husbandry with Veterinary Clinic

More information

Relationship of ewe reproduction with subjectively assessed wool and conformation traits in the Elsenburg Merino flock

Relationship of ewe reproduction with subjectively assessed wool and conformation traits in the Elsenburg Merino flock South African Journal of Animal Science 2018, 48 (No. 1) Relationship of ewe reproduction with subjectively assessed wool and conformation traits in the Elsenburg Merino flock P. A. M. Matebesi-Ranthimo

More information

The breeding scheme of the Karagouniko sheep in Greece

The breeding scheme of the Karagouniko sheep in Greece The breeding scheme of the Karagouniko sheep in Greece Georgoudis A., Hatziminaoglou I., Pappas V. in Gabiña D. (ed.). Strategies for sheep and goat breeding Zaragoza : CIHEAM Cahiers Options Méditerranéennes;

More information

KANSAS SHEEP RESEARCH 1994

KANSAS SHEEP RESEARCH 1994 KANSAS SHEEP RESEARCH 1994 Report of Progress 703 Agricultural Experiment Station Kansas State University, Manhattan Marc A. Johnson, Director TABLE OF CONTENTS Performance of Lambs Sired by Rambouillet,

More information

Reasons for an Autumn Lambing Programme in the Western District of Victoria

Reasons for an Autumn Lambing Programme in the Western District of Victoria Reasons for an Autumn Lambing Programme in the Western District of Victoria W. W EATHERLY* Summary The advantages and disadvantages of an autumn lambing are outlined. Advantages : The autumn lambing programme

More information

Post-weaning Growth and Carcass Traits of St. Croix White and Dorper X St. Croix White Lambs Fed a Concentrate Diet in the U.S.

Post-weaning Growth and Carcass Traits of St. Croix White and Dorper X St. Croix White Lambs Fed a Concentrate Diet in the U.S. Volume 20, 2005 Post-weaning Growth and Carcass Traits of St. Croix White and Dorper X St. Croix White Lambs Fed a Concentrate Diet in the U.S. Virgin Islands R.W. Godfrey 1 and A.J. Weis Agricultural

More information

Experiences from lambing throughout the year in Finland Internorden 2010 Denmark

Experiences from lambing throughout the year in Finland Internorden 2010 Denmark Experiences from lambing throughout the year in Finland Internorden 2010 Denmark Milla Alanco Domestic Animal Consultant, sheep ProAgria Southern Ostrobothnia Central Finland Central Ostrobothnia Swedish

More information

Improving sheep welfare for increased production

Improving sheep welfare for increased production Improving sheep welfare for increased production Emma Winslow 3 April 2017 SARDI - Struan sheep Research Livestock innovation and welfare group: Sheep welfare and wellbeing Production and management Genetic

More information

RUMEN-PROTECTED BYPASS FAT FOR DAIRY EWE COMMERCIAL MILK PRODUCTION

RUMEN-PROTECTED BYPASS FAT FOR DAIRY EWE COMMERCIAL MILK PRODUCTION Summary RUMEN-PROTECTED BYPASS FAT FOR DAIRY EWE COMMERCIAL MILK PRODUCTION Brett C. McKusick, Yves M. Berger, and David L. Thomas Department of Animal Sciences and Spooner Agricultural Research Station

More information

The South African National Small Stock Improvement Scheme

The South African National Small Stock Improvement Scheme The South African National Small Stock Improvement Scheme J.J. Olivier () ARC Animal Improvement Institute, Private Bag X9, Middelburg, South Africa Introduction The economic viability of any business

More information

The effect of weaning weight on subsequent lamb growth rates

The effect of weaning weight on subsequent lamb growth rates Proceedings of the New Zealand Grassland Association 62: 75 79 (2000) 75 The effect of weaning weight on subsequent lamb growth rates T.J. FRASER and D.J. SAVILLE AgResearch, PO Box 60, Lincoln, Canterbury

More information

New Zealand s Strategy for a more profitable sheep & beef industry. 5 September 2011 P11026

New Zealand s Strategy for a more profitable sheep & beef industry. 5 September 2011 P11026 New Zealand s Strategy for a more profitable sheep & beef industry 5 September 2011 P11026 Outline New Zealand Production Performance recording translates to industry improvement Summary New Zealand Production

More information

SHREWSBURY LIVESTOCK AUCTION

SHREWSBURY LIVESTOCK AUCTION SHREWSBURY AUCTION CENTRE Bowmen Way, Battlefield, Shrewsbury, SY4 3DR Tel: 01743 462 620 Fax: 01743 442 815 Email : market@hallsgb.com MARKET REPORT FOR TUESDAY 26 TH FEBRUARY 2019 THIS WEEKS RESULTS

More information

Saskatchewan Sheep Opportunity

Saskatchewan Sheep Opportunity Saskatchewan Sheep Opportunity Prepared by Saskatchewan Sheep Development Board 2213C Hanselman Court Saskatoon, Saskatchewan S7L 6A8 Telephone: (306) 933-5200 Fax: (306) 933-7182 E-mail: sheepdb@sasktel.net

More information

SA MERINO SIRE EVALUATION TRIAL - UPDATE

SA MERINO SIRE EVALUATION TRIAL - UPDATE 5 TH JUNE 2018 SOUTH AUSTRALIAN STUD MERINO SHEEPBREEDERS ASSOCIATION INC ABN 21 254 813 645 Royal Adelaide Showground Goodwood Road, Wayville PO Box 108 Goodwood SA 5034 P 08 8212 4157 F 08 8231 7095

More information

DEPARTMENT 4 SHEEP. Superintendent - Les Mang - (570) Assistant Superintendent Linda Marshall

DEPARTMENT 4 SHEEP. Superintendent - Les Mang - (570) Assistant Superintendent Linda Marshall DEPARTMENT 4 SHEEP Superintendent - Les Mang - (570)253-0323 Assistant Superintendent Linda Marshall 1. Any animal of unthrifty nature, unsuitable condition, or which cannot be satisfactorily handled under

More information

Survey and Performance Evaluation of Malpura Sheep in Farmers Flocks of its Native Tract

Survey and Performance Evaluation of Malpura Sheep in Farmers Flocks of its Native Tract DOI Number 10.5958/2277-940X.2014.00078.3 Journal of Animal Research: v.4 n.1, p. 75-84. June 2014 Survey and Performance Evaluation of Malpura Sheep in Farmers Flocks of its Native Tract A.L. Arora 1,

More information

EverGraze: pastures to improve lamb weaning weights

EverGraze: pastures to improve lamb weaning weights EverGraze: pastures to improve lamb weaning weights S.M. Robertson and M.A. Friend EH Graham Centre for Agricultural Innovation, Charles Sturt University and NSW Department of Primary Industries, Wagga

More information

Meadowood Farms 2017 Ram Lambs for sale

Meadowood Farms 2017 Ram Lambs for sale Meadowood Farms 2017 Ram Lambs for sale At the end of the 2016 season we identified 8 ewes (of the 125 mature ewes bred) from whom we would like to keep replacement rams to sell, based on the dams 2016

More information

Relative Effectiveness of Estrous Synchronization Methods in the Ewe

Relative Effectiveness of Estrous Synchronization Methods in the Ewe South Dakota State University Open PRAIRIE: Open Public Research Access Institutional Reposiry and Information Exchange South Dakota Sheep Field Day Proceedings and Research Reports, 1985 Animal Science

More information

Effect of supplementary feeding to ewes and suckling lambs on ewe and lamb live weights while grazing wheat stubble

Effect of supplementary feeding to ewes and suckling lambs on ewe and lamb live weights while grazing wheat stubble South African Journal of Animal Science 2015, 45 (No. 1) Effect of supplementary feeding to ewes and suckling lambs on ewe and lamb live weights while grazing wheat stubble T.S. Brand 1,2# & L. Brundyn

More information

Ben Anthony, Diana Fairclough and Lesley Stubbings SHAWG Conference 16 November 2016

Ben Anthony, Diana Fairclough and Lesley Stubbings SHAWG Conference 16 November 2016 Improving Flock Performance Ben Anthony, Diana Fairclough and Lesley Stubbings SHAWG Conference 16 November 2016 What do we mean by Flock performance? Physical: Lambs reared/ewe Kgs lamb reared/ewe (production

More information

International sheep session Focus on Iceland Eyþór Einarsson 1, Eyjólfur I. Bjarnason 1 & Emma Eyþórsdóttir 2 1

International sheep session Focus on Iceland Eyþór Einarsson 1, Eyjólfur I. Bjarnason 1 & Emma Eyþórsdóttir 2 1 International sheep session Focus on Iceland Eyþór Einarsson 1, Eyjólfur I. Bjarnason 1 & Emma Eyþórsdóttir 2 1 The Icelandic Agricultural Advisory Centre 2 The Agricultural University of Iceland Sheep

More information

Udder cistern size and milkability of ewes of various genotypes

Udder cistern size and milkability of ewes of various genotypes of various genotypes Milerski, M. 1, M. Margetin 2, D. Apolen 2, A. Capistrak 2 & J. Spanik 2 1 Research Institute of Animal Production, Pratelstvi 815, P.O. Box 1, CZ-10401 Prague 114 Uhrineves, Czech

More information

WEANING RATES OF HAIRY, WOOLLY AND CROSSBRED LAMBS

WEANING RATES OF HAIRY, WOOLLY AND CROSSBRED LAMBS ANALELE UNIVERSITATII DIN ORADEA, Fascicula Ecotoxicologie, Zootehnie si Tehnologii de Industrie Alimentara WEANING RATES OF HAIRY, WOOLLY AND CROSSBRED LAMBS G. Gyimóthy, A. Kovacs, K. Magyar, G. Novotni

More information

AGE OF ONSET OF PUBERTY IN MERINO EWES IN SEMI-ARID TROPICAL QUEENSLAND

AGE OF ONSET OF PUBERTY IN MERINO EWES IN SEMI-ARID TROPICAL QUEENSLAND Proc. Aust. Soc. Anim. Prod. (1972) 9: 181 AGE OF ONSET OF PUBERTY IN MERINO EWES IN SEMI-ARID TROPICAL QUEENSLAND R. M. MURRAY* Summary TWO groups, each of 25 ewes were run with harnessed vasectomized

More information

HANDS ON EDUCATION - THE PRACTICAL ADVANTAGE. Robert Dunn

HANDS ON EDUCATION - THE PRACTICAL ADVANTAGE. Robert Dunn HANDS ON EDUCATION - THE PRACTICAL ADVANTAGE Robert Dunn New South Wales Department of Primary Industries Tocal College CB Alexander Agricultural Campus Paterson NSW 2421 SUMMARY: Tocal college offers

More information

The Livestock & Poultry Industries-I

The Livestock & Poultry Industries-I The Livestock & Poultry Industries-I Developed by: Elaine Bailey ELB, ANSC 101 1 What are domestic livestock species? Cattle (beef & dairy) Poultry Swine Sheep Horses Others? ELB, ANSC 101 2 Terminology

More information

Realities of sheep artificial insemination on farm level: farm and breed differences

Realities of sheep artificial insemination on farm level: farm and breed differences Realities of sheep artificial insemination on farm level: farm and breed differences Sándor Kukovics1 Tímea NémethN meth1 Erzsébet Gyökér2 Elemér r Gergátz2 1Research Institute for Animal Breeding and

More information