TETRA L SUPERB COMMERCIAL HYBRID MANAGEMENT GUIDE

TETRA L SUPERB COMMERCIAL HYBRID MANAGEMENT GUIDE

TETRA L SUPERB COMMERCIAL HYBRID MANAGEMENT GUIDE

Contents Contents Introduction............................. 2 Breeding scheme of TETRA L SUPERB.... 3 Performance data of TETRA L SUPERB commercial hybrid....................... 4 General rules for cleaning and disinfecting poultry houses............... 5 Before the arrival of the new flock Brooding period......................... 6 Health management..................... 6 Vaccination program Egg handling........................... 11 Nests Egg collection Lighting program....................... 11 Controlled environment (dark house) Open house environment Production goals for TETRA L SUPERB commercial layers...................... 12 Hot climate management............... 13 Husbandry Growth management........ 7 Feeding space Drinking Space Beak Trimming Body weight and nutrition Lighting program Production period Management during production Feeding program Control of uniformity 1

Introduction Introduction TETRA L SUPERB is a white feathered layer for standard or free range systems. The hybrid is selected for efficient egg production, feed consumption and high livability. Genetic selection of pure lines is an ongoing task for Bábolna TETRA geneticists to maintain and improve the quality and performance of our Grandparent, Parent and Commercial stocks. Our manual is a guideline and information source for maximizing your profits and satisfaction with your stocks; however special requests due to climatic or lighting conditions may require assistance from your nearest Bábolna TETRA specialist. We believe that by following this Management Guide and keeping accurate records, the results of your flock will gradually improve year by year. BÁBOLNA TETRA Ltd. 2

Breeding scheme of TETRA L SUPERB Breeding scheme of TETRA L SUPERB Pedigree Lines Grandparent Lines Parent Commercial 3

Performance data of TETRA L SUPERB commercial hybrid Performance data of TETRA L SUPERB commercial hybrid Livability 0-17 weeks of age 96-97% 18-90 weeks of age 93-95% Feed consumption 0-17 weeks of age 5.3-5.4 kg 18-90 weeks of age (Average) 95-108 g/day Body weight at 17. weeks of age at 90. weeks of age 1.19-1.29 kg 1.65-1.75 kg Maturity Age at 50% production Age at 90% production 140-144 day 161-163 day Egg production per HH Until 72 weeks of age 316-320 Until 80 weeks of age 356-360 Until 90 weeks of age 403-408 Egg mass Until 72 weeks of age Until 80 weeks of age Until 90 weeks of age 19.9 kg 22.7 kg 25.5 kg Egg weight Until 32 weeks of age Until 52 weeks of age Until 80 weeks of age Until 90 weeks of age Average egg weight Shell strength Shell Colour 60.1 g 62.8 g 66.1 g 66.5 g 63 g 40 N white 4

General rules for cleaning and disinfecting poultry houses General rules for cleaning and disinfecting poultry houses Isolation of the house is vitally important to reduce the possibility of introducing a disease organism into a clean house environment. People traffic constitutes the largest threat to isolation and introduction of disease causing agents. Ideally, shower facilities and farm clothing are available for all employees and necessary visitors. If this is not possible, visitors should be limited to those that are necessary and they should be required to wear clean coveralls, new plastic or cleaned rubber boots, and hair covering. 99Disinfectant footbaths should be present at the entrance way to each house and should be replenished with fresh disinfectant daily. 99Doors should be kept locked at all times to prevent unwanted, improperly attired visitors from entering. No Trespassing signs should be prominently displayed on the doors and Bio-security Zone signs should be displayed at the farm entrance to warn visitors that they are entering a bio- secure area. Remembering that people spread many diseases from farm to farm will help to encourage less people traffic to and from farms. Before the arrival of the new flock 99Sanitation should begin with removal of all organic matter from the previous flock. Organic matter includes live and dead chickens, rodents, manure, feathers, etc. Growing birds on built-up litter is not recommended at any time. 99Dry cleaning should be done as soon as possible after the old flock is removed. Down time is very beneficial in allowing pathogens to die naturally. The dry cleaning should include the walls, rafters, ceiling, feed bins and other feed equipment, fans, vents, watering system, cages, etc. 99After dry cleaning has been completed, all surfaces should be washed with highpressure washing and an approved surfactant containing detergent. 99Following this wash down, apply a sanitizing agent approved for use in poultry houses. The sanitizing agent chosen should be broad spectrum in its activity and used according to manufacturer s directions. 99 If allowed, fumigation of the house using an approved fumigant can also be used after returning all equipment to the house. 99Rodent control programs should be strictly enforced when the house is cleaned and empty. The use of baits, tracking powders, and any other control method available should be implemented. 99Raise the house temperature to 29-32 C (85-90 F) at least 24 hours prior to chick arrival to ensure the equipment is also warm. The desired relative humidity should be greater than 60%. This humidity level should be maintained for at least three weeks. 99Set light clocks to 23 hours day length with a light intensity as high as possible. If shadows are being cast onto any drinkers/nipples, the use of droplights is suggested to eliminate these shadows. 99Trigger nipples to ensure that they are in working order and set at the proper height. Nipples should be at the chick s eye level and bell drinkers should be on the floor. Supplemental drinkers should be used in floor brooding and removed slowly once the chicks are established and are clearly using the main drinking system. 99Any equipment removed should be cleaned and disinfected prior to replacement prior to chick arrival. 5

Brooding period - Health management Brooding period 99For TETRA L Superb commercial stock we recommend to use spot brooding. Heat is provided by conventional canopy brooders. Rearing space can be divided half by a curtain for saving on space and energy costs. 1. Table: Temperature requirements for brooding period Age (day) Brooding temperature ( C) Under the brooder House Day old 32 25 1-4 32-33 C 34-35 C 99Always measure the temperature at the bird s level. 99Besides the temperature it is essential to maintain proper humidity as well especially if brooding in cages. Relative humidity has to be kept between 40-60% by evaporating water (floor brooding) or watering the walks (cage brooding) if necessary. 1. Figure: Indication of chick s well-being during brooding 5-7 30 C 32 C 8-14 28 C 30 C 15-21 26 C 27 C 22-28 24 C 24 C 29-35 22 C 22 C 35-119 20 C 20 C 99The behavior of the chickens is the best indicator of the temperature especially during night. By following some simple rules, we can ensure the conformity of the chicks during this fragile period. 99If the birds are calm and quiet and they spread equally in the house it means they feel comfortable. too warm too cold correct temperature draught Health management Vaccination program 99Always consult with your local vet as rules are changing according to the country s own regulation. 2. Table: Example of a vaccination program for TETRA L Superb Age Day 23 Week 6 Week 7 Week 9 Disease Gumboro IB Salmonellosis (live) Avian Encephalomyelitis Age Disease Week 10 Pneumo virus Marek Week 12 IB Day 1 (hatchery) Newcastle (ND) Week 14 ND + IB Day 1 (farm) Bronchitis (IB) Coccidiosis Before transfer Fowl pox TRT, IB, EDS, ND (inactive) Day 5 Salmonellosis (live) Day 12 ND + IB Day 16 Gumboro 6

HUSBANDRY Growth management HUSBANDRY GROWTH MANAGEMENT TARGETS: Flock uniformity Ensure that targets stated in the technology are reached Keep records of mortality, feed intake, FCR, water consumption and weekly bodyweight 99Uniformity and regular weighing is foremost important. The growth of a flock is normal and the birds can be considered equal if CV is below 10%. CV%= (standard deviation/ average bodyweight) x 100 99Feed consumption is mainly affected by body weight, performance, feed texture and energy level, temperature and feathering. 3. Table: Standards for TETRA L Superb commercial Density pullet/m² Drinking space Feeding space Age (weeks) 0-8 9-18 over 18 Deep litter 17 12 8 Cage 18 14 10 Age (weeks) 0-2 3-18 over 18 Birds/nipple 10 8-10 5-6 Birds/drinker (46 cm) Through space/bird Birds/dia circular feeder (40 cm) 70-80 50-60 35-40 3 cm + extra feeders 4 cm 5 cm 70 35 25 Feeding space Standard should be regarded as the minimum requirements for satisfactory performance. Beak Trimming Beak trimming need not be carried out routinely when our stock is kept in controlled environment housing. But if experience from previous flocks suggests that it is necessary, it will be worthwhile first checking all other aspects of management before embarking on a program of beak trimming. The provision of more feeders and drinkers, more space per bird, correct nutritional components or improved ventilation may be the correct action to take. Infrared treatment is the most recommended method for beak trimming, which can be done soon after hatching, when chicks dried up. Beak trimming can also be done at about 7-10 days of age. In order to reduce stress, it should be delayed for flocks where the brooding conditions have not been adequate. In open sided housing, routine beak trimming is recommended, as both bright light intensities and high temperatures may predispose undesirable behavior. Care must be taken that all birds are correctly and uniformly beak trimmed. Each bird should mature with a rounded, but slightly shortened beak and be able to conduct normal feeding activity. Drinking Space 99Water is an essential nutrient by itself. It can also influence all other nutrient intakes by controlling feed intake. For example, a restriction on water intake will cause a voluntary reduction in feed intake. 99To ensure that all birds find water when initially housed there should be a minimum light intensity of 20 lux at the bird s level. This is especially important at day-old and where change of drinking system occurs when moving birds into the laying house. 7

HUSBANDRY Growth management Body weight and nutrition 4. Table: Nutritional recommendation for TETRA L Superb commercial stock Ration Starter 1 Starter 2 Grower Pre-lay Layer Age in Weeks 0-3 4-8 9-16 17-19 20-75 Met. Energy, MJ/kg 12,35 12 11,5 11,7 11,5-11,7 Met.Energy, kcal/kg 2 950 2 870 2 750 2 800 2750-2800 Crude Protein, % 20 18 15,5 17,5 16-17,5 Amino acids, total Lysine, % 1,15 1 0,75 0,8 0,75-0,85 Methionine, % 0,48 0,42 0,35 0,4 0,36-0,42 Methionine+cystine, % 0,84 0,74 0,61 0,7 0,63-0,74 Threonine, % 0,73 0,63 0,5 0,6 0,52-0,62 Tryptophan, % 0,22 0,19 0,16 0,19 0,18-0,21 Amino acids, digestible Lysine, % 1,01 0,89 0,67 0,71 0,65-0,74 Methionine, % 0,44 0,39 0,32 0,37 0,34-0,39 Methionine+cystine, % 0,73 0,65 0,53 0,61 0,54-0,65 Threonine, % 0,64 0,54 0,43 0,51 0,44-0,53 Tryptophan, % 0,18 0,16 0,14 0,16 0,15-0,17 Linoleic Acid, % 1,3 1,15 1 1,5 0,3-1,75 Calcium, % 1 1 1 2,5 3,8-4,1 Phosphorus, available, % 0,48 0,45 0,4 0,42 0,36-0,4 Sodium, % 0,17 0,17 0,17 0,17 0,17 Chloride, % 0,18 0,18 0,18 0,18 0,18 Added Vitamins Vitamin A, IU/kg 12 000 10000 12 000 Vitamin D 3, IU/kg 3 000 2500 3 000 Vitamin E, mg/kg 30 20 25 Vitamin K, mg/kg 3 2 2 Vitamin B 1 mg/kg 2 2 2 Vitamin B 2, mg/kg 6 4 6 Vitamin B 6, mg/kg 4 2 3 Vitamin B 12, mcg/kg 20 10 20 Panthotenic Acid, mg/kg 12 8 8 Niacin, mg/kg 40 30 30 Biotin, mcg/kg 100 100 100 Folic Acid, mg/kg 2 1 1 Choline, mg/kg 400 300 400 Vitamin C* 50-100* Added Trace Minerals Iron, mg/kg 50 50 50 Mangenese, mg/kg 100 100 100 Copper, mg/kg 8 8 8 Zinc, mg/kg 80 80 80 Iodine, mg/kg 1 1 1 Cobalt, mg/kg 1 1 1 Selenium, mg/kg 0,3 0,3 0,3 99Essentially Starter rations aim to produce a good skeleton, good organ development and help promote an active immune system. This is achieved by feeding the starter ad libitum during the first week with the correct balance and absolute levels of essential amino acids, for growth, development of the immune system, feathering and skin condition. 99Whilst the Grower and Pre-lay ration will be the lowest density ration that the bird receives, it is important that all nutrients are correctly included. Feed restriction is not recommended during this period as it may be difficult to achieve the correct body weight at first egg. Feeding portion is increasing; therefore it is essential to monitor the body weights weekly during this period. 99Clean water should always be available and checked regularly. 8

HUSBANDRY Growth management 5. Table: Body weight development and feed intake of TETRA L Superb Commercial TETRA L SUPERB Weeks Daily feed Daily feed Body weight (g) intake intake cum. (g/bird) (g) 1 65 62-68 10 0,1 2 115 110-120 17 0,2 3 180 175-185 22 0,3 4 255 245-265 28 0,5 5 330 315-345 32 0,8 6 420 405-435 37 1,0 7 520 500-540 42 1,3 8 610 585-635 45 1,6 9 700 670-730 49 2,0 10 800 770-830 52 2,3 11 885 850-920 55 2,7 12 955 915-995 57 3,1 13 1015 975-1055 60 3,5 14 1080 1035-1125 63 4,0 15 1140 1095-1185 66 4,4 16 1190 1140-1240 68 4,9 17 1240 1190-1290 70 5,4 Lighting program 99Lighting program is only effective if direct sunlight is blocked out of the building. 99The principle function of a lighting program is to influence the age at which a flock of birds becomes sexually mature. 99Age, and more particularly body weight, at first egg is the main factor, which determines the package of egg output. Egg numbers during the laying year decrease by 3-4 eggs for each 10-day delay in age at first egg. 99Lighting program is only effective if direct sunlight is blocked out of the building otherwise the time of maturity can vary. Due to this reason flocks moved to laying in autumn will start produce eggs a few weeks later than stated in this manual. 1. Figure: Lighting program for TETRA L SUPERB (Growing period) Hours of light 24 22 20 18 16 14 12 10 8 6 4 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Age - weeks Age (Weeks) Hours of light Light intensity (Lux) 1 22 20-30 2 20 10-20 3 19 10-20 4 18 5-10 5 17 5-10 6 14 5-10 7 11 5-10 8 10 5-10 9 10 5-10 10 10 5-10 11 10 5-10 12 10 5-10 13 10 5-10 14 10 5-10 15 10 5-10 16 10 5-10 17 12 20 18 13 20 19 13,5 20 20 14 20 21 14,5 20 22 15 20 23 15,5 20 24 16 20 25 16 20 99Bright light is necessary for the chicks to feed and drink properly. Therefore, light intensity should be monitored, especially in the first 2-3 weeks. Production period The target at the beginning of this period is 5-10% average production at the age of transfer. Females mature early, at 19-20 weeks of age. Laying may start around 20-21 weeks, especially when birds goes into production in late winter/ spring time. Management during production TETRA L SUPERB birds are suitable for alternative keeping systems during the production. Under hot climate it is advisable to provide shelter (house, trees, sheds) and extra drinking and living space for the birds. Controlled environmental houses are more sensible in allyear production programs. 9

HUSBANDRY Growth management Feeding program Body weight should be monitored every week until 30 weeks of age, then on a monthly basis. Overweighed hens lay fewer eggs during their production cycle; therefore daily feed consumption should be adjusted to the bodyweight standard. Control of uniformity Hens are usually transferred to the poultry house around 19 weeks of age. Bodyweight should be closely monitored until the onset of production. Daily feed amount must be adjusted to avoid fattening. Flock uniformity must be our main target. The more uniform the flock is the quicker will be the increase in production. It is advised to split the daily amount of feed giving the first round in the morning just before switching the lights on, and then distribute the rest of the feed after the peak laying hours. The level of feed intake in the production period is mainly affected by: 10 -- Body weight, temperature, feathering, energy, texture of the feed, production intensity Laying hens primarily alter their daily food intake to accommodate changes in their requirement for energy. Therefore factors which alter the bird s demand for energy, such as ambient temperature, automatically alter the bird s intake of food. If there has been no modification of the ration formulation, changes in daily intake will result in changes in all nutrient intakes, and changes in the intake of amino acids, vitamins, minerals, anti-coccidials etc. will correspondingly affect bird performance. Hens do not totally adjust intake at the extremes of temperature or dietary energy concentration. At high temperatures or with high energy concentrations it tends to reduce energy intake too much and egg output suffers. Hens with low bodyweight lay fewer eggs, whereas higher body weight at the beginning of the production seems an advance until the peak period. 5. Table: Body weight development and feed intake of TETRA L SUPERB (Production period) TETRA L SUPERB Weeks Daily feed Daily feed Body weight (g) intake (g/ intake cum. bird) (g) 18 1 290 1 240-1 340 74 0,5 19 1 340 1 285-1 395 78 1,1 20 1 380 1 325-1 435 82 1,6 21 1 415 1 360-1 470 86 2,2 22 1 450 1 290-1 510 88 2,9 23 1 480 1 420-1 540 90 3,5 24 1 510 1 450-1 570 92 4,1 25 1 530 1 470-1 590 94 4,8 26 1 550 1 490-1 610 96 5,5 27 1 565 1 500-1 630 97 6,1 28 1 575 1 510-1 640 98 6,8 29 1 580 1 515-1 645 98 7,5 30 1 585 1 520-1 650 99 8,2 31 1 590 1 525-1 655 99 8,9 32 1 595 1 530-1 660 99 9,6 33 1 600 1 535-1 665 99 10,3 34 1 605 1 540-1 670 99 11,0 35 1 610 1 545-1 675 99 11,7 36 1 615 1 550-1 680 99 12,4 37 1 620 1 555-1 685 100 13,1 38 1 625 1 560-1 690 100 13,8 39 1 630 1 565-1 695 100 14,5 40 1 630 1 565-1 695 100 15,2 41 1 635 1 570-1 700 100 15,9 42 1 640 1 575-1 705 100 16,6 43 1 645 1 580-1 710 100 17,3 44 1 645 1 580-1 710 100 18,0 45 1 645 1 580-1 710 100 18,7 46 1 645 1 580-1 710 100 19,4 47 1 650 1 585-1 715 100 20,1 48 1 650 1 585-1 715 100 20,8 49 1 650 1 585-1 715 100 21,5 50 1 650 1 585-1 715 100 22,2 51 1 655 1 590-1 720 100 22,9 52 1 655 1 590-1 720 100 23,6 53 1 655 1 590-1 720 100 24,3 54 1 655 1 590-1 720 100 25,0 55 1 660 1 595-1 725 100 25,7 56 1 660 1 595-1 725 100 26,4 57 1 660 1 595-1 725 100 27,1 58 1 660 1 595-1 725 100 27,8 59 1 665 1 600-1 725 100 28,5 60 1 665 1 600-1 725 100 29,2 61 1 665 1 600-1 725 100 29,9 62 1 665 1 600-1 725 100 30,6 63 1 670 1 610-1 730 100 31,3 64 1 670 1 610-1 730 100 32,0 65 1 670 1 610-1 730 100 32,7 66 1 670 1 610-1 730 100 33,4 67 1 675 1 610-1 735 100 34,1 68 1 675 1 610-1 735 100 34,8 69 1 675 1 620-1 735 100 35,5 70 1 675 1 620-1 735 100 36,2 71 1 680 1 620-1 735 100 36,9 72 1 680 1 620-1 735 100 37,6 73 1 680 1 620-1 740 100 38,3 74 1 680 1 620-1 740 100 39,0 75 1 685 1 630-1 740 100 39,7 76 1 685 1 630-1 740 100 40,4 77 1 685 1 630-1 740 100 41,1 78 1 685 1 630-1 740 100 41,8 79 1 690 1 630-1 745 100 42,5 80 1 690 1 630-1 745 100 43,2 81 1 690 1 640-1 745 100 43,9 82 1 690 1 640-1 745 100 44,6 83 1 695 1 640-1 745 100 45,3 84 1 695 1 640-1 745 100 46,0 85 1 695 1 640-1 750 100 46,7 86 1 695 1 640-1 750 100 47,4 87 1 700 1 650-1 750 100 48,1 88 1 700 1 650-1 750 100 48,8 89 1 700 1 650-1 750 100 49,5 90 1 700 1 650-1 750 100 50,2 **: Feed amount must be adjusted to the production intensity and uniformity. Check body weight weekly around the peak production, increase daily feed for hens, as intensity goes up.

Egg handling - Lighting program Egg handling Nests The production of clean eggs and the minimization of eggs laid on the floor are influenced greatly by the provision of sufficient, well sited and well maintained nest boxes. Floor eggs are less usable, increase work for farm staff and expose eggs for potential bacterial infection. Nests should be well ventilated to discourage broodiness and their litter replenished regularly to prevent breakages and minimize bacterial contamination. Egg collection Flock size and number of nests determines the number of eggs collected. Collect eggs from nests at least 4 times a day. Most eggs will be laid during the morning hours, so collection times should be adjusted accordingly. Floor eggs must be collected and handled separately. Note must be taken of % of floor eggs, so management factors can be changed if necessary. Lighting program Controlled environment (dark house) When birds are reared in a controlled environmental house, onset of production is relatively easy to handle. After transferring the birds, hours of lighting must be increased until 16 hours. Do not decrease the length of lighting during the production period! Full benefit will not be obtained if the house is not light-proof, especially when birds are being reared during a time of naturally increasing day length. In such circumstances, early sexual maturity and small egg size are potential problems. Open house environment Light stimulation is not necessary when birds are transferred to an open sided or free range environment. Adjustment of lighting program is depending on the followings: 99Natural daylight increases 99Natural daylight decreases For example; when our flock starts production in late winter/spring, when natural day length increasing in Northern Hemisphere, it is advised not to transfer them before natural sexual maturity (21-22 weeks of age). Personalized lighting programs for regional climatic and lighting conditions are available from your Bábolna TETRA representatives. 11

Production goals for TETRA L SUPERB commercial layers Production goals for TETRA L SUPERB commercial layers 7. Table: Production goals for TETRA L SUPERB commercial layers Age Prod.% Weekly Prod. Weekly Prod Prod.% Weekly Prod. Weekly Prod Egg weight Egg mass HH Weeks HH eggs/hh Cumm. HD eggs/hd Cumm. Average g Cumm. kg 19 12.4 0.9 0.9 12.4 0.9 0.87 45.0 0.04 20 30.0 2.1 3.0 30.1 2.1 2.97 46.5 0.14 21 61.4 4.3 7.3 61.6 4.3 7.28 47.9 0.34 22 80.5 5.6 12.9 80.8 5.7 12.94 49.2 0.62 23 89.0 6.2 19.1 89.4 6.3 19.20 50.5 0.93 24 92.2 6.5 25.6 92.7 6.5 25.69 51.7 1.27 25 93.6 6.6 32.1 94.2 6.6 32.29 52.9 1.61 26 94.6 6.6 38.8 95.2 6.7 38.95 54.1 1.97 27 95.0 6.7 45.4 95.7 6.7 45.65 55.3 2.34 28 94.6 6.6 52.0 95.4 6.7 52.33 56.5 2.71 29 94.3 6.6 58.6 95.1 6.7 58.99 57.7 3.10 30 94.0 6.6 65.2 94.9 6.6 65.63 58.9 3.48 31 93.7 6.6 71.8 94.6 6.6 72.25 59.5 3.87 32 93.4 6.5 78.3 94.4 6.6 78.86 60.1 4.27 33 93.1 6.5 84.8 94.1 6.6 85.45 60.2 4.66 34 92.8 6.5 91.3 93.9 6.6 92.02 60.3 5.05 35 92.5 6.5 97.8 93.6 6.6 98.58 60.5 5.44 36 92.1 6.4 104.2 93.3 6.5 105.11 60.6 5.83 37 91.7 6.4 110.7 93.0 6.5 111.61 60.7 6.22 38 91.3 6.4 117.1 92.7 6.5 118.10 60.8 6.61 39 90.9 6.4 123.4 92.4 6.5 124.57 60.9 7.00 40 90.5 6.3 129.8 92.0 6.4 131.01 61.1 7.39 41 90.1 6.3 136.1 91.7 6.4 137.43 61.2 7.77 42 89.7 6.3 142.3 91.4 6.4 143.83 61.4 8.16 43 89.3 6.3 148.6 91.1 6.4 150.21 61.6 8.54 44 88.9 6.2 154.8 90.8 6.4 156.56 61.8 8.93 45 88.5 6.2 161.0 90.5 6.3 162.90 61.9 9.31 46 88.1 6.2 167.2 90.2 6.3 169.21 62.0 9.69 47 87.7 6.1 173.3 89.9 6.3 175.51 62.1 10.07 48 87.3 6.1 179.4 89.6 6.3 181.78 62.3 10.45 49 86.9 6.1 185.5 89.3 6.3 188.03 62.4 10.83 50 86.5 6.1 191.6 89.0 6.2 194.26 62.6 11.21 51 86.1 6.0 197.6 88.7 6.2 200.47 62.7 11.59 52 85.7 6.0 203.6 88.4 6.2 206.66 62.8 11.97 53 85.3 6.0 209.6 88.1 6.2 212.83 62.9 12.34 54 84.9 5.9 215.5 87.8 6.1 218.97 63.0 12.72 55 84.5 5.9 221.4 87.5 6.1 225.10 63.2 13.09 56 84.1 5.9 227.3 87.2 6.1 231.20 63.3 13.46 57 83.7 5.9 233.2 86.9 6.1 237.28 63.4 13.84 58 83.3 5.8 239.0 86.6 6.1 243.34 63.5 14.21 59 82.9 5.8 244.8 86.3 6.0 249.38 63.6 14.58 60 82.5 5.8 250.6 86.0 6.0 255.40 63.8 14.94 61 82.1 5.7 256.3 85.7 6.0 261.40 63.9 15.31 62 81.7 5.7 262.0 85.4 6.0 267.37 64.0 15.68 63 81.3 5.7 267.7 85.1 6.0 273.33 64.1 16.04 64 80.9 5.7 273.4 84.8 5.9 279.26 64.2 16.41 65 80.5 5.6 279.0 84.5 5.9 285.18 64.4 16.77 66 80.0 5.6 284.6 84.1 5.9 291.06 64.5 17.13 67 79.5 5.6 290.2 83.7 5.9 296.92 64.6 17.49 68 79.0 5.5 295.7 83.3 5.8 302.75 64.7 17.85 69 78.4 5.5 301.2 82.8 5.8 308.54 64.8 18.20 70 77.8 5.4 306.7 82.3 5.8 314.30 65.0 18.56 71 77.2 5.4 312.1 81.8 5.7 320.03 65.1 18.91 72 76.6 5.4 317.4 81.3 5.7 325.71 65.2 19.91 73 76.0 5.3 322.7 80.8 5.7 331.37 65.3 19.92 74 75.4 5.3 328.0 80.3 5.6 336.99 65.4 19.95 75 74.8 5.2 333.3 79.8 5.6 342.57 65.6 20.29 76 74.2 5.2 338.5 79.3 5.5 348.12 65.7 20.63 77 73.5 5.1 343.6 78.6 5.5 353.62 65.8 20.97 78 72.8 5.1 348.7 78.0 5.5 359.09 65.9 21.31 79 72.1 5.0 353.7 77.4 5.4 364.51 66.0 21.64 80 71.4 5.0 358.7 76.8 5.4 369.88 66.1 22.70 81 70.7 4.9 363.6 76.2 5.3 375.22 66.1 22.75 82 70.0 4.8 368.4 75.6 5.3 380.52 66.2 22.81 83 69.3 4.8 373.2 75.0 5.3 385.77 66.2 22.93 84 68.5 4.7 377.9 74.3 5.2 390.97 66.3 23.24 85 67.7 4.7 82.6 73.6 5.2 396.12 66.3 23.55 86 66.9 4.6 387.2 72.9 5.1 401.22 66.3 23.86 87 66.1 4.5 391.7 72.2 5.1 406.27 66.4 24.16 88 65.3 4.5 396.2 71.4 5.0 411.27 66.4 24.46 89 64.5 4.4 400.6 70.7 5.0 416.22 66.5 24.75 90 63.7 4.4 405.0 70.0 4.9 421.12 66.5 25.50 12

Hot climate management Hot climate management In the open house system of poultry keeping practiced in tropical climates it is not always possible for the Bábolna TETRA L SUPERB Stock to fully express its genetic potential. However, there are various modifications to the management recommendations for controlled environmental conditions which can be adopted to minimize the loss of performance. The main problems encountered when keeping birds at high temperatures are the followings: Difficulties of getting enough nutrients into the bird Change in method of heat loss used by the bird to maintain its body temperature after panting begins at about 28 C (82 F). Birds reduce their intake of energy as ambient temperatures rise because of the lower demand for heat production at higher temperatures. There are two approaches to minimizing performance losses; Reducing the temperature of the bird s microclimate, Maximizing nutrient intake. Use roofing materials which have good insulation properties and reflect solar radiation. Natural materials like palm thatch usefully reduce penetration of solar heat. Where metal roofs are unavoidable they can be painted with a solar reflective product, or be fitted with a sprinkler along the ridge to reduce the heat radiated through to the house interior. Where water is at a premium, sprinkler systems can incorporate a recycling pump. Roof overhangs should be long enough to prevent direct sunlight falling on the birds, at least in the hottest part of the day. Ridge outlets should be fitted to permit bird heat to escape; ideally these should open away from the sun. Roofs should be as high as possible to minimize the temperature at the bird s level and maximize the natural air flow to the ridge. Mount fans vertically to create horizontal air movement at the bird s level (safety-guards must be fitted). Fogging the inside of the house with fine water droplets will reduce the air temperature and moisten the fleshy parts of the bird s head, so improving heat loss. Nozzle size should be small enough to ensure that the water droplet size is not too big. Vegetation and trees may be planted around the buildings to provide shade and reduce the amount of sunlight reflected from the ground. It is important to note that in some countries welfare regulations may stipulate stocking rates, feeding space and drinking space, which are different to those given in this manual. Regulations may also prohibit or restrict certain husbandry practices, such as beak trimming, toe clipping and dubbing. 13

TETRA L SUPERB 2016 BÁBOLNA TETRA Ltd. H-2943 Bábolna, Radnóti u. 16, Hungary Phone: +36 34 568 152 e-mail: tetrakft babolnatetra.com www.babolnatetra.com