The Effect of Low and High Temperature Exposure of Chicken Embryos During Incubation on Hatchability and Subsequent Growth Rate, Feed Efficiency, Mortality, Sex Ratios and Carcass Quality |
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11 day embryos 19 days 36 hours average weight gain broiler broiler chickens chicken embryos chicks after hatching Cont control by analysis Control Group day embryos exposed day of incubation days 11 days days 21 decrease in hatchability decrease in internal Dicalcium Phosphate Eggs Exposed Eleven day embryos embryonated eggs Experiment 2 Table exposed to 21°C exposed to low EXPOSURE OF CHICKEN exposure treatment feed conversion Four day embryos Groups in Experiment High Temperature Exposure hour exposure incu internal temperature KcaL long term temperature low and high Low Temperature Exposure Moreng and Bryant Morgan and Tucker Niacin Nineteen day embryos number of observations Penquite Percent Hatchability Period 4 days Period for Groups relative growth rate Riboflavin Romanoff sex ratios stages of incubation standard incubation temperature student t-test Tables 11 term temperature exposure three embryonic stages Treatment Wk week growing period wing banded Wk 2 Wk Wk 3 Wk