Internal Egg Temperature in Response to Preincubation Warming in Broiler Breeder and Turkey Eggs
|
|
- Randall Clark
- 5 years ago
- Views:
Transcription
1 2006 Poultry Science Association, Inc. Internal Egg Temperature in Response to Preincubation Warming in Broiler Breeder and Turkey Eggs R. A. Renema, J. J. R. Feddes, 1 K. L. Schmid, M. A. Ford, and A. R. Kolk Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5 Primary Audience: Broiler Flock Managers, Researchers, Field Service Technicians, Hatchery Personnel SUMMARY Various methods of preincubation warming have been used in commercial hatcheries to increase hatchability, decrease incubation time, and increase embryonic blastoderm development. A study was conducted to determine the effect of preincubation warming and egg size on the warming rate of eggs. Three egg groupings were evaluated: small broiler breeder eggs (52 to 57 g), large broiler breeder eggs (64 to 69 g), and turkey eggs (74 to 107 g). The eggs were subjected to 2 temperature treatments. The conventionally incubated eggs were moved directly from storage (17.5 C) to the incubator (adjusted to 37.5 C). The preincubation warmed eggs were moved from the storage room to the preincubation room (28 C) for 12 h and then to the incubator. Internal egg temperature was measured once per minute to calculate the rate of warming. The warming rate potential (k value) differed for egg type and temperature treatment. The values for small and large broiler breeder eggs and turkey eggs were , , and kj/min per kj of energy in the egg, respectively. This study characterizes the maximum rate of temperature change that occurs when eggs are transferred from a storage or preincubation area to the incubator, creating baseline values for future work with the modification of hatchery management protocols. These data can contribute to more informed decisions regarding hatchery temperature profile strategies and their effect on the developing embryo. Key words: preincubation warming, warming rate, egg size DESCRIPTION OF PROBLEM In the hatching egg industry, eggs are stored in the breeder barn until transport to the hatchery occurs and at the hatchery until space becomes available in the incubators. Eggs are stored below the minimum temperature for embryonic development [1]. This temperature has been reported to be 28 C by Funk and Biellier [2] and more recently 20 to 21 C [1] J. Appl. Poult. Res. 15:1 8 Preincubation warming is the warming of eggs prior to placement in the incubator. During prolonged storage, the periodic or intermittent warming of eggs can improve hatchability particularly for birds that have a low rate of hatchability [3, 4]. Recommended storage temperatures are lower for storage periods of greater than 7 d [6]. However, little benefit has been reported for storage periods of less than 14 d [5, 6, 7, 8]. By decreasing the storage temperature 1 Corresponding author: john.feddes@ualberta.ca
2 2 JAPR: Research Report further below physiological zero, any disproportionate development of embryo tissues is slowed [8]. Hen age can modulate the impact of temperature changes on the embryo. Meijerhof et al. [9] suggested that older birds tend to lay eggs with fewer viable embryos that have an increased sensitivity to temperature and a reduced ability to withstand storage. Ultimately, preincubation warming methods are most beneficial to birds with poor rates of hatchability [4], embryos subjected to long-term preincubation storage [5], and when lower storage temperatures are used [6]. When eggs are prewarmed, the temperature of their environment changes from below physiological zero to an environmental temperature where further development is possible. The intermittent preincubation warming during prolonged storage allows further proportional tissue development and increases hatchability [8]. Once these eggs are transferred to the incubator, the minimum temperature for development will not be the same for all embryonic tissues [10]. At the embryonic level, this means that it is beneficial to bring the eggs up to incubation temperature quickly to avoid abnormal growth and an increased likelihood of embryonic mortality. However, incubator design may limit the ability of the egg temperature to reach adequate levels at a reasonable rate. Preincubation warming just before transfer into the incubator can increase the basal egg temperature, possibly reducing the embryonic stress by reducing the period in which final warming occurs. The importance of providing the optimum temperature profile to achieve optimally incubated eggs cannot be discounted. Hen age should already be accounted for in incubation management, because eggs from younger hens require slightly different temperature and humidity levels than eggs from intermediate or old hens for optimal embryogenesis and hatchability [11]. There may be other differences due to variation in incubation needs among modern genetic lines. Vleck [12] suggested that domestic strains of birds are less tolerant of variability in the physical environment than are wild birds. Decuypere and Michels [8] follow this by noting that heavily selected broiler lines are the least tolerant of temperature variation when compared with other domestic strains. With many hatcheries moving from multistage incubation toward single-stage incubation, strain-specific incubation management is possible. To achieve an ideal incubation temperature profile for different sized eggs from different strains, there needs to be a basic understanding of temperature change within different egg sizes and types. Meijerhof and van Beek [13] described the influence of climatic conditions on the temperature development during warming or cooling of eggs through mathematical modeling. They predicted exponential temperature development during an imposed temperature change on the eggs. The rate of warming for an object can be calculated with Equation 1 [14] (T final T)/(T final T initial ) = e (ha/ρcv)t k = ha/ρcv Equation [1] Equation [2] The warming rate potential is described by the convection coefficient (h), egg area (A), egg density (ρ), egg specific heat capacity (c) and egg volume (v). The units of k are kilojoules per minute of warming per kilojoule of energy in the egg. Equations 1 and 2 can be combined into Equation 3 to express warming rate potential (k) as k = ln(t final T)/t Equation [3] The objective of this study was to determine if a difference exists between the rate of internal warming of eggs that are prewarmed prior to incubation and the warming rate of eggs set immediately upon removal from the cooler. The effect of egg size on the rate of warming was also of interest. MATERIALS AND METHODS Egg Source Sixty hatching eggs consisting of 20 small broiler breeder eggs (52 to 57 g), 20 large broiler breeder eggs (64 to 69 g), and 20 turkey eggs (74 to 107 g) were obtained for each of the 3 consecutive replicates of the trial. The small and large eggs were gathered from a 35-wk-old
3 RENEMA ET AL.: CHARACTERIZATION OF EGG WARMING 3 broiler breeder flock and the turkey eggs were obtained from a 41-wk-old turkey breeder flock. Fresh eggs were acquired for each replicate of the study and subjected to the experimental treatments within 2 d of being laid. Each egg was assigned a number according to tray position and weight. The eggs were placed in 2 separate 68-egg trays. Each tray contained 10 eggs from each type arranged in a sequence of small broiler breeder egg, large broiler breeder egg, and turkey egg in a repeating pattern resulting in an intermixed arrangement. With this arrangement, the temperature effects were assumed to be the same for each replication since flock production had progressed to a point where egg composition was much more stable than in very early lay. Temperature Measurement A 4-mm diameter hole was drilled into the top of each egg. A thermistor sensor [15] was inserted through the opening to a depth of 1.5 cm to ensure the tip was likely in the yolk. The thermistor was secured to the shell with hot glue. Each tray also contained a thermistor for measuring the ambient temperature. The thermistors were connected to a data acquisition module that transmitted the temperature data to a nearby laptop computer. Trays were placed inside the egg cooler (17.5 C) overnight to allow the internal egg temperature to equilibrate with ambient temperature. Tray 1 was then held at room temperature (28 C) for 12 h, while tray 2 remained in the egg cooler. After 12 h, trays 1 and 2 were placed in the incubator, and temperature measurements continued for both of these trays for another 48 h. The trays were placed in a 5,000 egg capacity incubator [16] adjusted to 37.5 C. The eggs remained in an upright position throughout the study. This aforementioned movement of trays created 3 warming treatments: storage to incubator (SI), storage to room (SR) and room to incubator (RI). Individual egg temperatures were recorded every min onto a spreadsheet by the laptop computer. The warming profiles of the eggs are shown in Figure 1 as a mean of all egg types. For each egg, temperature change per minute ( T/min), k value (kj/min per kj of egg energy; equation 3), and the time required to reach a stabilized temperature t amb were determined (Table 1). The elapsed time to reach a stabilized temperature was the time the mean of the egg temperatures first reached the ambient air temperature of the eggs. The k and T/min values were determined from the linear part of the egg-warming curve using equation 3. The k mass value was normalized for egg mass by dividing the k value by the egg mass and multiplying by 1,000 (Table 1). The experimental eggs were not placed adjacent to other treatment eggs, and no other eggs were placed in the incubator or storage area during the study. This allowed for maximal rates of heat exchange between the egg and its environment and avoided confounding by impeded airflow caused by egg placement. Data Analyses Each replicate of the trial was a 3 3 factorial design with 3 temperature treatments and 3 egg sizes. The 3 consecutive replicates were carried out for 1 wk. A 3-way ANOVA (egg type temperature treatment replicate) was conducted using the GLM procedures of SAS [17]. The experimental unit was the egg type or tray within each experimental replicate. The least significant difference procedure was used to separate means when significant differences were indicated. Significance was assumed at P RESULTS AND DISCUSSION The warming characteristics for the 3 egg types and the 3 temperature profiles were determined (Table 1). Egg mass differed (P 0.05) among the 3 egg types (small broiler breeder, large broiler breeder, and turkey; Table 1). The egg types also differed in their T/min and k value characteristics, and the k mass value differed among the 3 egg types. The interaction of egg type by warming treatment was not significant. The value of t amb was not different for egg type. The T per minute and the k value showed no significant difference between the large broiler breeder and turkey eggs (Table 1). However, the k mass value differed among these egg types. As shown in Figure 2, in which a representative portion of the warming profile is presented for illustration, the warming profiles appear to be very similar. These results were unexpected as we had hypothesized that because larger eggs have a smaller surface area to volume ratio they would warm more slowly than smaller eggs. The
4 4 JAPR: Research Report Figure 1. Mean comparison of warming profiles between preincubation warming and conventional incubation for all 3 egg types. surface area (4πr 2 ) to volume ratio (1.33 πr 3 ) was determined mathematically for the egg types as 3/r where r is the radius of an equivalent circle to that of an egg [18]. The eggs were assumed to have a specific gravity similar to that of water (1 g /ml), because the specific gravity of an egg is between and The surface area to volume ratio was 1.3 for small eggs, 1.2 for large eggs, and 1.1 for turkey eggs. Although there was a difference in the surface area to volume ratio and an average weight difference of 22 g between the large broiler breeder and Table 1. Egg warming characteristics for 3 different egg types subjected to 3 different temperature treatments Time Egg Temperature to ambient weight change temperature k 2 3 k mass Source (g) ( C min 1 ) (t amb ) 1 (min) (kj min 1 kj) (kj min 1 kj 1 g 1,000) Egg type Small broiler breeder c a a 0.93 a Large broiler breeder b b b 0.74 b Turkey a b b 0.54 c SEM Warming treatment Storage to incubator a 196 b a Storage to room c 309 a b Room to incubator b 136 c a SEM a c Means within a column and a source with no common superscripts significantly differ (P < 0.05). 1 Time to ambient temperature from the imposition of the temperature treatment (min). 2 Warming rate potential calculated from the linearly increasing portion of the warming rate profile. 3 k value normalized for egg mass. 4 Target range 52 to 57 g. 5 Target range 64 to 69 g. 6 Target range 74 to 107 g. 7 Moved from storage to incubator temperature (SI). 8 Moved from storage to room temperature (SR). 9 Moved from room to incubator temperature (RI).
5 RENEMA ET AL.: CHARACTERIZATION OF EGG WARMING 5 Figure 2. A sample response of egg type to temperature change from the room to incubator. turkey eggs, the warming behavior between these egg types expressed as a k value was similar; however, the warming behavior was different when expressed on a mass basis (k mass ; Table 1). This finding suggests that the mass rather than the surface area to volume ratio of the egg explained the difference in warming rate. The dynamics of temperature may be more apparent between egg types in a full incubator, where egg size and incubation tray design may affect airflow. Coleman et al. [19] previously indicated that egg mass and egg size are directly proportional to the amount of time required for an egg to reach ambient temperature. The T/min, t amb, and k values were different for the 3 temperature profiles: SI, SR, and RI (P 0.05) (Table 1). Figure 3 illustrates a portion of the warming profile of large broiler breeder eggs for each of the treatments. A difference was found in the warming rate between preincubation treated eggs (SR RI) and conventionally treated eggs (SI), for which it was shown that the 3 types of eggs in the preincubation warming treatment had a more gradual warming rate. The warming profile was found to be more gradual in the preincubation warming temperature treatment (Table 1; Figures 1 and 3) because of the lower temperature gradient between the storage and the preincubation room. These rooms were not heated with forced-air systems, which would virtually eliminate air movement in the immediate vicinity of the egg compared with those placed directly into the incubator. Consequently, the t amb value for conventionally warmed eggs (SI) was 196 min; the prewarmed eggs went from storage temperature to incubator temperature (SR t amb + RI t amb ) in 445 min. This was also reflected in the warming rate ( T/min). Eggs in the SI treatment warmed at a rate of 0.30 C per minute, which was significantly different from the SR warming rate (0.13 C/min) and the RI warming rate (0.16 C/min; Table 1). These differences are attributed to the difference in temperature between time of introduction to the treatment and reaching the new temperature. The k values determined in this study from the rates of warming were compared with the k values for eggs cooled in storage as previously determined [20]. Eggs that were partially exposed to moving air in the cooling trial had a k value of kj/min per kj of egg energy, whereas eggs enclosed with no air movement had a k value of kj/min per kj of egg energy. The values for the partially exposed eggs were exceeded by approximately 3 times in this trial (0.0506, small broiler breeder eggs; , large broiler breeder eggs; and kj/min per kj of egg energy for turkey eggs). The lowdensity filling of the trays used in this warming trial allowed for a high degree of egg surface area
6 6 JAPR: Research Report Figure 3. A sample of initial temperature response of large broiler breeder eggs to 3 different temperature treatments. exposure to air movement within the incubator. This demonstrates that maximum rates of temperature change among the egg types and temperature treatments occurred. Full egg trays and incubators may result in a reduced rate of temperature change if airflow is hindered. For example, a range in embryo temperatures within the incubator can be related to both airflow and egg size. Although embryos of all sizes will die when their internal temperature reaches 48.5 C, larger eggs can reach this temperature earlier because of their greater production of metabolic heat [21]. The practical application for larger eggs may affect the efficiency of heat transfer between the air and the egg. Larger eggs will have less ability to lose heat per unit of mass as well as less surface area per unit of mass. Also, egg shape (narrowness or roundness of the egg) can affect hatchability by impeding embryo rotation late in incubation [22]. However, egg shape can also affect the shape and thickness of the air cell and influence airflow at the egg surface and between the eggs. Air velocity affects heat transfer, meaning that heat transfer can be partially inhibited if air velocity is limited [23]. Proudfoot and Hulan [24] indicated that it took approximately 1 h to raise the internal egg temperature from 16 to 38 C in a warming chamber. In the current study, the time to a completely stable, ambient temperature was measured, which explained some of the difference in times between these 2 studies. Figure 3 shows that the period of most rapid temperature change was quite comparable. Wilson [7] has suggested that prolonging the period the embryo spends between 27 and 35 C can result in disproportionate development of tissues. The treatments in the current study brought the eggs to a constant temperature near the bottom of this range (28 C) to allow a more uniform movement through this temperature range. Whereas a 26 C room temperature would have been more desirable for this study, this was difficult to achieve in the research hatchery. Under ideal incubator conditions, the process of bringing the egg up to incubation temperature would be quite rapid. Because variation in egg heating can occur due to efficiency of air movement and heat transfer to the egg, partially heating the eggs prior to transfer into the incubator could make this final heating phase more rapid. The current study provides background data that can contribute to more informed decisions regarding hatchery temperature profile strategies, such as rate of temperature change for bird strain, bird age, or egg size. The empirical values determined for warming rates of the 3 egg types could be used as a basis for further studies on optimal incubation conditions. Managers of multispecie hatcheries may benefit from the knowledge that turkey eggs
7 RENEMA ET AL.: CHARACTERIZATION OF EGG WARMING 7 have similar warming characteristics to large broiler breeder eggs. Although preincubation warming leads to a warming process that is overall more gradual, it may also ensure eggs do not need as much time in the incubator to fully initiate embryo development. It may at least create a more uniform initiation of embryonic development compared with what may result from direct transfer to an incubator with nonuniform CONCLUSIONS AND APPLICATIONS 1. Warming rate potentials for small broiler breeder eggs (52 to 57 g), large broiler breeder eggs (64 to 69 g), and turkey eggs (74 to 107 g) were , , and kj/min per kj of energy potentially stored in the egg under ideal incubator conditions. 2. Increased egg size was assumed to decrease warming rate. This hypothesis was true for small broiler breeder and large broiler breeder eggs; however, turkey eggs were much like broiler breeder large eggs, even though turkey eggs are much larger. Strain or egg type may influence the development of optimal heating profiles. 3. Eggs that were transferred directly from storage to incubator warmed at a rate of 0.30 C/min, whereas the prewarmed eggs warmed at rates of 0.13 C and 0.16 C/min for the storage to room and room to incubator treatments, respectively. However, by prewarming the eggs, the time to reach the ambient incubator temperature was 60 min less (136 min) for eggs transferred from room to incubator compared with those transferred directly from storage to the incubator (196 min). This finding has application in the comparison of efficiencies of incubator performance and egg warming rate. 1. Proudfoot, F. G., and H. W. Hulan Care of hatching eggs before incubation. Publication 1573/E. Commun. Branch, Agric. Canada, Ottawa, ON, Canada. 2. Funk, E. M., and H. V. Biellier The minimum temperature for embryonic development in the domestic fowl (Gallus domesticus). Poult. Sci. 23: Kosin, I. L Studies on the pre-incubation warming of chicken and turkey eggs. Poult. Sci. 35: Becker, W. A., and G. E. Bearse Pre-incubation warming and hatchability of chicken eggs. Poult. Sci. 37: Proudfoot, F. G Hatchability of stored chicken eggs as affected by daily turning during storage and pre-warming and vacuuming eggs enclosed in plastic with nitrogen. Can. J. Anim. Sci. 46: Mayes, F. J., and M. A. Takeballi Storage of the eggs of the fowl (Gallus domesticus) before incubation: A review. World s Poult. Sci. J. 40: Wilson, H. R Physiological requirements of the developing embryo: temperature and turning. Pages in Avian Incubation. S. G. Tullett, ed. Butterworths, London, UK. 8. Decuypere, E., and H. Michels Incubation temperature as a management tool: A review. World s Poult. Sci. J. 48: Meijerhof, R., J. P. T. M. Noordhuizen, and F. R. Leenstra Influence of pre-incubation treatment on hatching results of REFERENCES AND NOTES heat transfer conditions. By bringing eggs up to a temperature just below that where differential tissue development begins [7], the time to final temperature is reduced (Table 1), which may somewhat compensate for inconsistencies in the rate of heating. Special cases, such as the thinner-shelled eggs from older birds may require a different rate of temperature change to ensure viable embryonic development. broiler breeder eggs produced at 37 and 59 weeks of age. Br. Poult. Sci. 35: Kaufman, L The effect of certain thermic factors on the morphagenesis of fowl embryos. Proc. 8th World s Poult. Congr., Copenhagen, Denmark 1: Peebles, E. D., M. R. Burnham, C. W. Gardner, J. Brake, J. J. Bruzual, and P. D. Gerard Effect of incubational humidity and hen age on embryo composition in broiler hatching eggs from young breeders. Poult. Sci. 80: Vleck, C. M Allometric scaling in avian embryonic development. Pages in Avian Incubation. S. G. Tullett, ed., Butterworths, London, UK. 13. Meijerhof, R., and G. van Beek Mathematical modeling of temperature and moisture loss of hatching eggs. J. Theor. Biol. 165: Karlekar, V. K., and R. M. Desmond Engineering Heat Transfer. West Publ. Co., New York, NY. 15. Onset Computer Corporation, Bourne, MA. 16. Jamesway Incubator Co. Inc., Cambridge, ON, Canada. 17. SAS Institute The SAS System for Windows, NT. Version 8.0. SAS Institute, Cary, NC. 18. Protter, M. H., and C. B. Morrrey Calculus with Analytical Geometry. Addison-Wesley Publ. Co. Inc., Reading, MA.
8 8 JAPR: Research Report 19. Coleman, J. W., H. S. Siegel, and G. F. Krause Initial internal temperature changes of incubating eggs. Poult. Sci. 43: Feddes, J. J. R., F. E. Robinson, W. Korver, B. Koberstein, and L. D. Watson Internal cooling rates of stored eggs: Effects of packing and egg size. J. Appl. Poult. Res. 2: Ono, H., P. C. L. Hov, and H. Tazawa Responses of the developing chicken embryo to acute changes in ambient temperatures: Noninvasive study of heart rate. Isr. J. Zool. 40: Narvuslim, V. G., and M. N. Romanov Egg physical characteristics and hatchability. World s Poult. Sci. J. 58: Meijerhof, R Principles and practice of incubator design. Pages in Practical Aspects of Commercial Incubation in Poultry. D. C. Deeming, ed. Ratite Conf. Books, Oxford, UK. 24. Proudfoot, F. G., and H. W. Hulan Effect of preincubation warming on the hatchability of hens eggs from normal and semidwarf parental genotypes. Can. J. Anim. Sci. 62: Acknowledgments The supply of eggs by G. Olson and Lilydale Hatchery and the invaluable assistance of the staff and students of the Alberta Poultry Research Centre are greatly appreciated.
The critical importance of incubation temperature
The critical importance of incubation temperature Nick A. French AVIAN BIOLOGY RESEARCH 2 (1/2), 2009 55 59 Aviagen Turkeys Ltd, Chowley Five, Chowley Oak Business Park, Tattenhall, Cheshire, CH3 9GA,
More informationHatchability and Early Chick Growth Potential of Broiler Breeder Eggs with Hairline Cracks
2004 Poultry Science Association, Inc. Hatchability and Early Chick Growth Potential of Broiler Breeder Eggs with Hairline Cracks D. M. Barnett, B. L. Kumpula, R. L. Petryk, N. A. Robinson, R. A. Renema,
More informationHow Does Photostimulation Age Alter the Interaction Between Body Size and a Bonus Feeding Program During Sexual Maturation?
16 How Does Photostimulation Age Alter the Interaction Between Body Size and a Bonus Feeding Program During Sexual Maturation? R A Renema*, F E Robinson*, and J A Proudman** *Alberta Poultry Research Centre,
More informationPRODUCTION, MODELING, AND EDUCATION
PRODUCTION, MODELING, AND EDUCATION Influence of Egg Shell Embryonic Incubation Temperature and Broiler Breeder Flock Age on Posthatch Growth Performance and Carcass Characteristics R. Hulet,* 1 G. Gladys,
More informationElevated Egg Holding-Room Temperature of 74 F (23 C) Does Not Depress Hatchability or Chick Quality
2003 Poultry Science Association, Inc. Elevated Egg Holding-Room Temperature of 74 F (23 C) Does Not Depress Hatchability or Chick Quality D. V. Bourassa,* R. J. Buhr,1 and J. L. Wilson* *Poultry Science
More informationLow Temperature Effects on Embryonic Development and Hatch Time 1
Low Temperature Effects on Embryonic Development and Hatch Time M. E. SUAREZ/ H. R. WILSON,^ B. N. MCPHERSON,* F. B. MATHER,+ and C. J. WILCOXt *Programa de Ganaderia, Colegio de Postgraduados, Montecillo,
More informationRelationships of incubational hatching egg characteristics to posthatch body weight and processing yield in Ross Ross 708 broilers 1,2
2014 Poultry Science Association, Inc. Relationships of incubational hatching egg characteristics to posthatch body weight and processing yield in Ross Ross 708 broilers 1,2 E. D. Peebles,* 3 R. Pulikanti,*
More informationThe Importance of Timely Removal from the Incubator of Hatched Poults from Three Commercial Strains 1
The Importance of ly Removal from the Incubator of Hatched Poults from Three Commercial s 1 V. L. CHRISTENSEN and W. E. DONALDSON Department of Poultry Science, North Carolina State University, Raleigh,
More informationSection 6. Embryonic Development and Hatchery Management Notes
Section 6 Embryonic Development and Hatchery Management Notes Slide 2 A well run hatchery is critical for any integrated poultry company whether it be a primary breeder company or a commercial meat company.
More informationRelationship between hatchling length and weight on later productive performance in broilers
doi:10.1017/s0043933908000226 Relationship between hatchling length and weight on later productive performance in broilers R. MOLENAAR 1 *, I.A.M. REIJRINK 1, R. MEIJERHOF 1 and H. VAN DEN BRAND 2 1 HatchTech
More informationEffects of breeder age on mineral contents and weight of yolk sac, embryo development, and hatchability in Pekin ducks
Effects of breeder age on mineral contents and weight of yolk sac, embryo development, and hatchability in Pekin ducks E. E. Onbaşılar,* 1 E. Erdem, Ö. Hacan, and S. Yalçın * Faculty of Veterinary Medicine,
More informationCare of the egg: from nest to farm store9
Care of the egg: from nest to farm store9 By Gerd de Lange, senior poultry specialist, Pas Reform Academy A healthy, well managed breeder flock, receiving a balanced feed ration, will produce good quality
More informationIncubation conditions affect leg health in large, high-yield broilers
2009 Poultry Science Association, Inc. Incubation conditions affect leg health in large, high-yield broilers E. O. Oviedo-Rondón, 1 M. J. Wineland, S. Funderburk, J. Small, H. Cutchin, and M. Mann Department
More informationFFA Poultry Career Development Event 2004 Poultry Judging District Contests
FFA Poultry Career Development Event 2004 Poultry Judging District Contests 1. In a market broiler house, heaters should be turned on to preheat the house hours before the chicks arrival. A. 5-10 hours
More informationAviagenBrief. Best Practice Management in the Absence of Antibiotics at the Hatchery. October Aviagen Veterinary Team.
AviagenBrief October 2017 Best Practice Management in the Absence of Antibiotics at the Hatchery Aviagen Veterinary Team Introduction In light of increased antibiotic resistance, and as consumer pressure
More information1^1. Agriculture Canada. Publication 1573/E. Care of hatching. before incubation. + Canada. *. Agriculture _. ft/,? t& jf.
1^1 Agriculture Canada Publication 1573/E û9 Care of hatching before incubation + Canada *. Agriculture _ ft/,? 2 1990 3t& jf Canada Agriculture Canada Publication 1573 K available from Communications
More informationThe Effects of Suboptimal Eggshell Temperature During Incubation on Broiler Chick Quality, Live Performance, and Further Processing Yield
The Effects of Suboptimal Eggshell Temperature During Incubation on Broiler Chick Quality, Live Performance, and Further Processing Yield N. S. Joseph,* A. Lourens, and E. T. Moran Jr.* 1 *Department of
More informationIT HAS been well established that
The Effect of Different Holding Temperatures on the Hatchability of Hens' Eggs M. W. OLSEN AND S. K. HAYNES Agricultural Research Center, Beltsville, Maryland IT HAS been well established that storage
More informationVariation of Chicken Embryo Development by Temperature Influence. Anna Morgan Miller. Rockdale Magnet School for Science and Technology
Variation of Chicken Embryo Development by Temperature Influence Anna Morgan Miller Rockdale Magnet School for Science and Technology Anna Morgan Miller Rockdale Magnet School 1174 Bulldog Circle Conyers,
More informationModeling Incubation Temperature: The Effects of Incubator Design, Embryonic Development, and Egg Size
Modeling Incubation Temperature: The Effects of Incubator Design, Embryonic Development, and Egg Size N. A. FRENCH British United Turkeys Ltd., Hockenhull Hall, Tarvin, Chester CH3 8LE, United Kingdom
More informationEffect of location of eggs in the incubator on hatchability of eggs from Bronze turkey breeders of different ages
214 Effect of location of eggs in the incubator on hatchability of eggs from Bronze turkey breeders of different ages M. Özçelik 1#, F. Ekmen 2 and Ö. Elmaz 1 1 Mehmet Akif Ersoy University, Faculty of
More informationFollowing on from the Aviagen
1 Successful incubation Following on from the Aviagen articles in International Poultry Production during 2006 we will be producing a series of articles with an incubation and hatchery theme for International
More informationIncubation Temperature for Ostrich (Struthio camelus) Eggs
Incubation Temperature for Ostrich (Struthio camelus) Eggs S. M. Hassan,*, A. A. Siam, M. E. Mady, and A. L. Cartwright*,1 *Poultry Science Department, Texas A&M University, College Station, Texas 77843-2472;
More informationEffect of Storage and Layer Age on Quality of Eggs From Two Lines of Hens 1
Effect of Storage and Layer Age on Quality of Eggs From Two Lines of Hens 1 F. G. Silversides*,2 and T. A. Scott *Crops and Livestock Research Centre, Charlottetown, Prince Edward Island, Canada C1A 7M8
More informationEFFECT OF MULTI-STAGE INCUBATOR TYPES ON HATCHABILITY AND CHICK QUALITY OF BROILER CHICKEN
Wayamba Journal of Animal Science ISSN: 2012-578X; P1737 - P1742, 2018 First Submitted October 02, 2018; Number 1533274662 EFFECT OF MULTI-STAGE INCUBATOR TYPES ON HATCHABILITY AND CHICK QUALITY OF BROILER
More informationINFO SHEET. Cull Eggs: What To Expect And How To Reduce The Incidence.
INFO SHEET Cull Eggs: What To Expect And How To Reduce The Incidence info.hybrid@hendrix-genetics.com www.hybridturkeys.com Introduction Over the years, several Hybrid customers have inquired about the
More informationLong-Term Selection for Body Weight in Japanese Quail Under Different Environments
Long-Term Selection for Body Weight in Japanese Quail Under Different Environments H. L. MARKS USDA, Agricultural Research Service, Southeastern Poultry Research Laboratory, c/o The University of Georgia,
More informationINCUBATION AND VITAL MORPHOLOGICAL TRAITS IN EGGS FROM AGE-RELATED TURKEYS
Trakia Journal of Sciences, Vol. 7, No. 1, pp 63-67, 2009 Copyright 2009 Trakia University Available online at: http://www.uni-sz.bg ISSN 1313-7050 (print) ISSN 1313-3551 (online) Original Contribution
More informationPerformance of Broiler Breeders as Affected by Body Weight During the Breeding Season 1
Performance of Broiler Breeders as Affected by Body Weight During the Breeding Season 1 H. R. WILSON and R. H. HARMS Department of Poultry Science, University of Florida, Gainesville, Florida 32611 (Received
More informationAllocating Feed to Female Broiler Breeders: Technical Bulletin #2
Allocating Feed to Female Broiler Breeders: Technical Bulletin #2 Brenda Schneider 1, Martin Zuidhof 1, Frank Robinson 2 & Rob Renema 2 1 Alberta Agriculture, Food and Rural Development, 2 University of
More informationEDUCATION AND PRODUCTION. Layer Performance of Four Strains of Leghorn Pullets Subjected to Various Rearing Programs
EDUCATION AND PRODUCTION Layer Performance of Four Strains of Leghorn Pullets Subjected to Various Rearing Programs S. LEESON, L. CASTON, and J. D. SUMMERS Department of Animal and Poultry Science, University
More informationGENETICS INTRODUCTION. G. B. Havenstein,* 2 P. R. Ferket,* J. L. Grimes,* M. A. Qureshi, and K. E. Nestor
GENETICS Comparison of the Performance of 1966- Versus 2003-Type Turkeys When Fed Representative 1966 and 2003 Turkey Diets: Growth Rate, Livability, and Feed Conversion 1 G. B. Havenstein,* 2 P. R. Ferket,*
More informationChick Quality breeder and hatchery influences. Daniel B Pearson Veterinary Health Director Aviagen UK Ltd
Chick Quality breeder and hatchery influences Daniel B Pearson Veterinary Health Director Aviagen UK Ltd Outline Definition of chick quality Nutrition Health Inputs Egg Hatchery Chick handling, storage
More informationPromotor Prof. dr. ir. B. Kemp Hoogleraar Adaptatiefysiologie Leerstoelgroep Adaptatiefysiologie Wageningen Universiteit
Promotor Prof. dr. ir. B. Kemp Hoogleraar Adaptatiefysiologie Leerstoelgroep Adaptatiefysiologie Wageningen Universiteit Co-promotoren Dr. ir. H. van den Brand Universitair docent Leerstoelgroep Adaptatiefysiologie
More informationEDUCATION AND PRODUCTION
EDUCATION AND PRODUCTION Effects of Light Intensity from Photostimulation in Four Strains of Commercial Egg Layers: 1. Ovarian Morphology and Carcass Parameters R. A. Renema and F. E. Robinson 1 Department
More informationBroiler Management for Birds Grown to Low Kill Weights ( lb / kg)
Broiler Management for Birds Grown to Low Kill Weights (3.3-4.0 lb / 1.5-1.8 kg) April 2008 Michael Garden, Regional Technical Manager Turkey, Middle East & Africa, Aviagen Robin Singleton, Technical Service
More informationIndustry Vision and Mission for Quality..3. Background and Executive Summary. 4-5
Version 3.0 1 2 Industry Vision and Mission for Quality..3 Background and Executive Summary. 4-5 Industry Standards for Broiler Chick Quality: 1. Laying and Handling of Eggs 6 2. Incubation and Hatching
More informationFEEDING CHINESE RINGNECK PHEASANTS FOR EFFICIENT REPRODUCTION. Summary *
FEEDING CHINESE RINGNECK PHEASANTS FOR EFFICIENT REPRODUCTION Robert E. Moreng, William K. Pfaff and Eldon W. Kienholz Summary * Two trials were conducted each using 240 Chinese Ringneck pheasant breeder
More informationDIFFERENT BREEDS DEMAND DIFFERENT INCUBATION MEASURES
CONCERNING POULTRY One can be puzzled by noticing that, from the same batch, in the same incubator, some of the chicks hatch normally, while others die before breaking the shell. Reading the following
More informationPOULTRY PRODUCTION TECHNICIAN: BROILER HATCHING EGG
POULTRY PRODUCTION TECHNICIAN: BROILER HATCHING EGG COURSE OTH9930: POULTRY OPERATIONS AND CARE 33 Prerequisite: AGR3000: Agriculture Safety (Note: Students are required to complete the prerequisite course
More informationEMBRYO DIAGNOSIS AN IMPORTANT TOOL TO HELP THE HATCHERY MANAGER
Issue No.14 / September 2007 EMBRYO DIAGNOSIS AN IMPORTANT TOOL TO HELP THE HATCHERY MANAGER By Avian Business Unit CEVA Santé Animale Libourne, France INTRODUCTION Chick quality is the first criterion
More informationKey facts for maximum broiler performance. Changing broiler requires a change of approach
Key facts for maximum broiler performance Changing broiler requires a change of approach Good chick quality = UNIFORMITY everywhere in the supply chain Performance 1. Professional breeder house / management
More informationCritical Points to Consider at the Incubation Process Guaranteeing Quality Chicks. Eddy Van Lierde Aviagen Hatchery Development & Support
Critical Points to Consider at the Incubation Process Guaranteeing Quality Chicks. Eddy Van Lierde Aviagen Hatchery Development & Support Essentials of Incubation For a fertile egg to produce a chick,
More informationSystematic factors that affect ostrich egg incubation traits
315 Systematic factors that affect ostrich egg incubation traits Z. Brand 1,2#, S.W.P. Cloete 1,3, C.R. Brown 4 and I.A. Malecki 5 1 Department of Animal Sciences, University of Stellenbosch, Private Bag
More informationImproving Growth and Yield of Commercial Pheasants Through Diet Alteration and Feeding Program
Improving Growth and Yield of Commercial Pheasants Through Diet Alteration and Feeding Program Sandra G. Velleman 1 and Nicholas B. Anthony 2 1 Department of Animal Sciences, The Ohio State University
More informationFFA Poultry Career Development Event 2004 NEO Aggie Day. 1. With regard to egg storage, which of the following statements is FALSE?
FFA Poultry Career Development Event 2004 NEO Aggie Day 1. With regard to egg storage, which of the following statements is FALSE? A. The longer the egg storage time, the higher the egg storage temperature
More informationRURAL INDUSTRIES RESEARCH AND DEVELOPMENT CORPORATION FINAL REPORT. Improvement in egg shell quality at high temperatures
RURAL INDUSTRIES RESEARCH AND DEVELOPMENT CORPORATION FINAL REPORT Project Title: Improvement in egg shell quality at high temperatures RIRDC Project No.: US-43A Research Organisation: University of Sydney
More informationOn-Farm Factors Affecting the Hatchability of Broiler Eggs in Parent. Breeder Operations
On-Farm Factors Affecting the Hatchability of Broiler Eggs in Parent Breeder Operations Jessica B. Hill Virginia Polytechnic Institute and State University Masters in Agriculture and Life Sciences Adviser:
More informationPHYSIOLOGY, ENDOCRINOLOGY, AND REPRODUCTION Effects of Eggshell Temperature and Oxygen Concentration on Embryo Growth and Metabolism During Incubation
PHYSIOLOGY, ENDOCRINOLOGY, AND REPRODUCTION Effects of Eggshell Temperature and Oxygen Concentration on Embryo Growth and Metabolism During Incubation A. Lourens,* 1 H. van den Brand, M. J. W. Heetkamp,
More informationSelection for Egg Mass in the Domestic Fowl. 1. Response to Selection
Selection for Egg Mass in the Domestic Fowl. 1. Response to Selection H. L. MARKS US Department of Agriculture, Science & Education Administration, Agricultural Research, uthern Regional Poultry Breeding
More informationCOURSES Overview
KWAZULU NATAL POULTRY INSTITUTE NPC Poultry Management Training Centre COURSES 2015 Overview These informative courses are all held at the KwaZulu-Natal Poultry Institute, Bisley, Pietermaritzburg. They
More informationEFFECTS OF BODY WEIGHT UNIFORMITY AND PRE-PEAK FEEDING PROGRAMS ON BROILER BREEDER HEN PERFORMANCE
2001 Poultry Science Association, Inc. EFFECTS OF BODY WEIGHT UNIFORMITY AND PRE-PEAK FEEDING PROGRAMS ON BROILER BREEDER HEN PERFORMANCE B. P. HUDSON, R. J. LIEN 1, and J. B. HESS Department of Poultry
More informationEffect of Post Hatch Feed Deprivation on Yolk-sac Utilization and Performance of Young Broiler Chickens
1174 Asian-Aust. J. Anim. Sci. Vol. 22, No. 8 : 1174-1179 August 2009 www.ajas.info Effect of Post Hatch Feed Deprivation on Yolk-sac Utilization and Performance of Young Broiler Chickens S. K. Bhanja*,
More informationtreatments. Eggs turned until 18 d had higher pco 2 and lower po during this second phase to ensure these conditions, but
Effects of Turning Duration During Incubation on Corticosterone and Thyroid Hormone Levels, Gas Pressures in Air Cell, Chick Quality, and Juvenile Growth K. Tona 1, O. Onagbesan, B. De Ketelaere, E. Decuypere,
More informationINCUBATION TEMPERATURE
INCUBATION TEMPERATURE For most chicken species, the optimum incubation temperature lies between 37.0 and 38.0 o Cen. The optimal value being 37.8 o Cen (100.0 o F ) Embryos are more sensitive to high
More informationImpact of Northern Fowl Mite on Broiler Breeder Flocks in North Carolina 1
Impact of Northern Fowl Mite on Broiler Breeder Flocks in North Carolina 1 J.J. ARENDS, S. H. ROBERTSON, and C. S. PAYNE Department of Entomology, North Carolina State University, Raleigh, North Carolina
More informationFFA Poultry Career Development Event 2000 Poultry Judging Contest Arkansas State FFA Judging Contest
FFA Poultry Career Development Event 2000 Poultry Judging Contest Arkansas State FFA Judging Contest Contestant Name: Contestant ID: 1. The per capita egg consumption is: A. 100 eggs per year B. 234 eggs
More informationBREEDING AND GENETICS. Comparative Evaluation of Three Commercial Broiler Stocks in Hot Versus Temperate Climates
BREEDING AND GENETICS Comparative Evaluation of Three Commercial Broiler Stocks in Hot Versus Temperate Climates SERVET YALÇIN,* PETEK SETTAR,* SEZEN OZKAN,* and AVIGDOR CAHANER,1 *The Aegean University,
More informationChick quality: hatchery impact on broiler performance. Scott Martin LLC - USA
Chick quality: hatchery impact on broiler performance Scott Martin LLC - USA Chick Quality Hatchery Impact on Performance Scott Martin SCOTT MARTIN, LLC. Field Performance FCR Advantage Advantage of 2
More informationEgg Marketing in National Supermarkets: Products, Packaging, and Prices Part 3
Egg Marketing in National Supermarkets: Products, Packaging, and Prices Part 3 K. W. Koelkebeck,*,1 D. D. Bell, J. B. Carey, K. E. Anderson, and M. J. Darre *Department of Animal Sciences, University of
More informationABSTRACT. Six experiments were conducted to evaluate the effects of early and late incubation
ABSTRACT BRANNAN, KELLY E. Effect of Early Incubation Temperature and Late Incubation Conditions on Embryonic Development and Subsequent Broiler Performance. (Under the direction of John T. Brake). Six
More informationABSTRACT. preheating temperature, early incubation temperature, and different turning frequency on
ABSTRACT LIN, YUN-MEI AMY. Effect of Preheating, Early Incubation, and Different Turning Frequency, on Embryonic Development and Broiler Performance. (Under the direction of Dr. John T. Brake). A series
More informationThe Hatch Window. Publication of Cobb-Vantress, Inc. ONE
Publication of Cobb-Vantress, Inc. ONE - 2008 The hatching of strong, viable birds is a key factor in increased broiler performance. To increase the probability of strong birds, good hatchery management
More informationDry Incubation. By Bill Worrell
Dry Incubation By Bill Worrell As a student of poultry at age 14, I became fascinated with the breeding and hatching of eggs. Even when I only raised mixed breed chickens and ducks I was always trying
More informationCarcass Traits, Ovarian Morphology and Egg Laying Characteristics in Early Versus Late Maturing Strains of Commercial Egg-Type Hens
Carcass Traits, Ovarian Morphology and Egg Laying Characteristics in Early Versus Late Maturing Strains of Commercial Egg-Type Hens F. E. Robinson,*,1 R. A. Renema,* H. H. Oosterhoff,* M. J. Zuidhof, and
More informationWhat can cause too many mid-size eggs?
www.poultryresearchcentre.ca What can cause too many mid-size eggs? Eduardo Beltranena, Doug Korver, Rob Renema, Valerie Carney Table Egg Sizes Size Weight Range Price/Doz peewee under 42 g $0.27* small
More informationFeeding the Commercial Egg-Type Replacement Pullet 1
PS48 Feeding the Commercial Egg-Type Replacement Pullet 1 Richard D. Miles and Jacqueline P. Jacob 2 TODAY'S PULLET Advances in genetic selection make today's pullets quite different from those of only
More informationThe breeding of birds is one of the ancient
Pakistan J. Zool., vol. 45(5), pp. 1215-1220, 2013 Hatching Traits as Influenced by Different Body Weight Categories in Four Close-Bred Flocks of Japanese Quails (Coturnix coturnix japonica) Ahmed Sultan
More informationEffects of High Incubation Temperature on the Body Weight and Yolk Consumption of Two Commercial Broiler Strain*
Acta Scientiae Veterinariae, 2014. 42: 1253. RESEARCH ARTICLE Pub. 1253 ISSN 1679-9216 Effects of High Incubation Temperature on the Body Weight and Yolk Consumption of Two Commercial Broiler Strain* Tugba
More informationNutritional Evaluation of Yam Peel Meal for Pullet Chickens: 2. Effect of Feeding Varying Levels on Sexual Maturity and Laying Performance
IJAAAR 7 (1&2): 46-53, 2011 International Journal of Applied Agricultural and Apicultural Research Faculty of Agricultural Sciences, Lautech, Ogbomoso, Ibadan Nigeria, 2011 46 Nutritional Evaluation of
More information2015 Iowa State Poultry Judging CDE Written Exam Version A 1. What is the name of the portion of the digestive system that secretes hydrochloric acid
1. What is the name of the portion of the digestive system that secretes hydrochloric acid and the enzyme pepsin? a. Rumen b. Gizzard c. Proventriculus d. Crop 2. In egg laying operations, production goals
More informationEffect of Egg Size on Heat Production and the Transition of Energy from Egg to Hatchling
Effect of Egg Size on Heat Production and the Transition of Energy from Egg to Hatchling A. Lourens,* 1 R. Molenaar, H. van den Brand, M. J. W. Heetkamp, R. Meijerhof, and B. Kemp *Applied Research of
More informationINDIAN POULTRY INDUSTRY GLITCHES
INDIAN POULTRY INDUSTRY GLITCHES Shortcomings and IoT Solutions By Kishore Ravichandran EXECUTIVE SUMMARY Indian poultry industry is fragmented, with large number of small scale players contributing to
More informationThe effects of shank length on incubation results of Japanese quails (Coturnix coturnix japonica) eggs and hatched chick shank length
The effects of shank length on incubation results of Japanese quails (Coturnix coturnix japonica) eggs and hatched chick shank length B. YILMAZ DIKMEN* and A. IPEK Faculty of Agriculture, Animal Science
More information206 Adopted: 4 April 1984
OECD GUIDELINE FOR TESTING OF CHEMICALS 206 Adopted: 4 April 1984 1. I N T R O D U C T O R Y I N F O R M A T I O N P r e r e q u i s i t e s Water solubility Vapour pressure Avian dietary LC50 (See Test
More informationEFFECTS OF ENVIRONMENTAL TEMPERATURE, RELATIVE HUMIDITY, FASTING AND FEEDING ON THE BODY TEMPERATURE OF LAYING HENS
EFFECTS OF ENVIRONMENTAL TEMPERATURE, RELATIVE HUMIDITY, FASTING AND FEEDING ON THE BODY TEMPERATURE OF LAYING HENS W. K. SMITH* Summary The separate effects of air temperature, relative humidity, fasting
More informationof Nebraska - Lincoln
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Publications from USDA-ARS / UNL Faculty U.S. Department of Agriculture: Agricultural Research Service, Lincoln, Nebraska
More informationGrowth Performance and Mortality in Hybrid Converter Turkeys Reared at High Altitude Region
241 Bulgarian Journal of Agricultural Science, 17 (No 2) 2011, 241-245 Agricultural Academy Growth performance and mortality in Hybrid Converter turkeys reared at high altitude region O. YILMAZ 1, H. DENK
More informationInfluence of incubation management on pipping position, hatching ability and survival of ostrich chicks
South African Journal of Animal Science 2011, 41 (no. 3) Influence of incubation management on pipping, hatching ability and survival of ostrich chicks Z. Brand 1,2#, S.W.P. Cloete 2,3, I.A. Malecki 4
More informationLocal Grains and Free-Choice Feeding of Organic Layer Hens on Pasture at UBC Farm Introduction
Local Grains and Free-Choice Feeding of Organic Layer Hens on Pasture at UBC Farm Darin C. Bennett, Avian Research Centre, Jacob Slosberg, Centre for Sustainable Food Systems, Faculty of Land Food Systems,
More informationFollow this and additional works at: Part of the Animal Sciences Commons
Clemson University TigerPrints All Dissertations Dissertations 8-2013 THE EFFECTS OF ALTERING INCUBATION TEMPERATURE ON BROILER CHICK HATCHABILITY, CHICK QUALITY, SEX RATIO, AND SUBSEQUENT PERFORMANCE
More informationAn Evaluation of Interior Quality of Shell Eggs Packed in the Carton While Still Warm 1
LEO AND FOOT ABNORMALITIES 461 faulty bone formation. Animal Nutrition and Health, 22: 17-18. Nairn,M. E., 1969. Astudy of infectiousosteomyelitis and synovitis of turkeys. Ph.D. Thesis, University of
More informationChicken Farmers of Canada animal Care Program. Implementation guide
Chicken Farmers of Canada animal Care Program Implementation guide Implementation Guide Animal Care Program Introduction Chicken Farmers of Canada (CFC) has developed a comprehensive animal care program
More informationFemale Persistency Post-Peak - Managing Fertility and Production
May 2013 Female Persistency Post-Peak - Managing Fertility and Production Michael Longley, Global Technical Transfer Manager Summary Introduction Chick numbers are most often reduced during the period
More informationFemale Persistency Post-Peak - Managing Fertility and Production
Female Persistency Post-Peak - Managing Fertility and Production Michael Longley, Global Technical Transfer Manager May 2013 SUMMARY Introduction Chick numbers are most often reduced during the period
More informationANALYZING OF QUAIL EGGS HATCHABILITY, QUALITY, EMBRYONIC MORTALITY AND MALPOSITIONS IN RELATION TO THEIR SHELL COLORS
Online Journal of Animal and Feed Research Volume 1, Issue 6: 267-273 (2011) ISSN 2228-7701 ANALYZING OF QUAIL EGGS HATCHABILITY, QUALITY, EMBRYONIC MORTALITY AND MALPOSITIONS IN RELATION TO THEIR SHELL
More informationBody weight, feed coefficient and carcass characteristics of two strain quails and their reciprocal crosses
1 Body weight, feed coefficient and carcass characteristics of two strain quails and their reciprocal crosses N.VALI 1, EDRISS, M.A. 2 and RAHMANI, H.R. 2 1 Department of Animal Sciences, faculty of Agriculture
More informationOverview of the U. S. Turkey Industry
Washington, D.C. Overview of the U. S. Turkey Industry Released November 9, 2007, by the National Agricultural Statistics Service (NASS),, U.S. Department of Agriculture. For information on call Toby Paterson
More informationPriam Psittaculture Centre
. Priam Psittaculture Centre Parrot Incubation Successful parrot egg incubation involves the appropriate management of quality eggs with appropriate incubation equipment. The following is a summary of
More informationBroiler Management in Hot Weather
2016 Broiler Management in Hot Weather Xavier Asensio, Aviagen Technical Service Manager in Western Europe SUMMARY Broiler producers aim to attain the best performance from their flocks. In order to achieve
More informationSpraying hatching eggs with electrolyzed oxidizing water reduces eggshell microbial load without compromising broiler production parameters
Spraying hatching eggs with electrolyzed oxidizing water reduces eggshell microbial load without compromising broiler production parameters G. M. Fasenko, 1 E. E. O Dea Christopher, and L. M. McMullen
More informationEVALUATION OF SOME EGGSHELL PARAMETERS DURING THE EMBRYOGENESIS IN TURKEYS
2017 NPPC ISSN 1337-9984 EVALUATION OF SOME EGGSHELL PARAMETERS DURING THE EMBRYOGENESIS IN TURKEYS P. HRISTAKIEVA*, M. OBLAKOVA, N. MINCHEVA, M. LALEV, K. KALIASHEVA Agricultural Institute - Stara Zagora,
More informationSTUDY BEHAVIOR OF CERTAIN PARAMETERS AFFECTING ASSESSMENT OF THE QUALITY OF QUAIL EGGS BY COMPUTER VISION SYSTEM
STUDY BEHAVIOR OF CERTAIN PARAMETERS AFFECTING ASSESSMENT OF THE QUALITY OF QUAIL EGGS BY COMPUTER VISION SYSTEM Zlatin Zlatev, Veselina Nedeva Faculty of Technics and Technologies, Trakia University Graf
More informationPurpose and focus of the module: Poultry Definition Domestication Classification. Basic Anatomy & Physiology
Module: Poultry Production Code: AP21 Purpose and focus of the module: It aims at providing students with adequate knowledge and skills in poultry husbandry techniques and farm management. Skill Objectives
More informationUse of Cool Perches by Broiler Chickens 1
Use of Cool Perches by Broiler Chickens 1 I. Estevez,*,2 N. Tablante, R. L. Pettit-Riley,* and L. Carr *Department of Animal and Avian Sciences; Virginia-Maryland Regional College of Veterinary Medicine;
More informationInvestigating the effect of forcing reproduction of lay-off broiler breeders at the middle of production period on economic performance of flock
Vol. 8(23), pp. 2843-2848, 20 June, 2013 DOI: 10.5897/AJAR09.059 ISSN 1991-637X 2013 Academic Journals http://www.academicjournals.org/ajar African Journal of Agricultural Research Full Length Research
More informationCHAPTER3. Materials and methods
CHAPTER3 Materials and methods 3.1 Experimental Site and Housing The study was conducted at the Animal Production Institute of the Agricultural Research Council (ARC) Irene, in Gauteng Province of South
More informationWe engineer your success. All over the world. HatchCare Automation. Improving animal welfare
We engineer your success. All over the world. HatchCare Automation Improving animal welfare HatchCare Automation Improving animal welfare a Live embryo transfer a In-ovo vaccination a Stress-free chick
More informationHuman-Animal Interactions in the Turkey Industry
Human-Animal Interactions in the Turkey Industry Dr. Naomi A. Botheras 1, Ms. Jessica A. Pempek 2, Mr. Drew K. Enigk 2 1 PI, 222E Animal Sciences Building, 2029 Fyffe Court, Columbus, OH 43210 (614) 292-3776;
More informationRESEARCH OPINIONS IN ANIMAL & VETERINARY SCIENCES PRINT ISSN , ONLINE ISSN
RESEARCH OPINIONS IN ANIMAL & VETERINARY SCIENCES PRINT ISSN 2221-1896, ONLINE ISSN 2223-0343 www.roavs.com Effect of dietary different ratios of coarse and fine limestone particles on egg production and
More information