当蛋重保持恒定时，产卵时间和亲本年龄对雏鸡体重没有影响。
Lack of effect of oviposition time and parental age on chick weight when egg weight remains constant.
作者信息
Yannakopoulos A L
机构信息
Department of Animal Husbandry, Veterinary School, The University, Thessaloniki, Greece.
出版信息
Br Poult Sci. 1988 Jun;29(2):431-4. doi: 10.1080/00071668808417068.
PMID:3409086
Abstract
- An experiment was conducted utilising 480 eggs from broiler breeder hens to determine the effect of oviposition and parental age on 1-d-old chick weight when egg weight remained constant. 2. Neither the age of the breeder flock nor the time of oviposition had a significant effect on egg weight loss during the 18 d of incubation. Nor was there any effect on chick weight: egg weight ratio and 1-d-old chick weight when chicks were removed and weighed at the same time. 3. Hatching time was significantly affected by time of oviposition and age of parents. Afternoon eggs or eggs from older hens tended to hatch earlier than morning eggs or eggs from younger ones.
摘要
- 利用480枚肉种鸡所产的蛋进行了一项实验，以确定在蛋重保持恒定的情况下，产蛋时间和种鸡年龄对1日龄雏鸡体重的影响。2. 在18天的孵化期内，种鸡群的年龄和产蛋时间对蛋重损失均无显著影响。当雏鸡同时取出称重时，对雏鸡体重与蛋重之比以及1日龄雏鸡体重也没有任何影响。3. 孵化时间受产蛋时间和种鸡年龄的显著影响。下午产的蛋或老龄母鸡产的蛋往往比上午产的蛋或年轻母鸡产的蛋孵化得早。
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