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Effect of environmental temperature on feed intake, body weight, rate of egg-laying, egg weight, egg-shell strength, blood calcium content and the level of oestradiol in the laying hen

Effect of environmental temperature on feed intake, body weight, rate of egg-laying, egg weight, egg-shell strength, blood calcium content and the level of oestradiol in the laying hen

Animal Husbandry and Veterinary Medicine Xumu yu Shouyi 18(3): 97-98

White Leghorn hens were fed to appetite for 3 weeks on mixed concentrates (2968 kcal/kg) with 16.7% crude protein, 4.4% crude fat, 3.2% crude fibre, 2.9% calcium and 0.39% available phosphorus and housed at temperature of 32.2 degrees or 7.8 degrees C. All hens lost weight during the trial period. Feed conversion rate was much lower at 32.2 degrees than at 7.8 degrees ; egg weight was significantly lower at 7.8 degrees but the egg-shell deformation value was significantly higher.

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