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机构地区:[1]郑州牧业工程高等专科学校,河南郑州450011
出 处:《安徽农业科学》2007年第1期99-99,137,共2页Journal of Anhui Agricultural Sciences
摘 要:采用饥饿法对艾维茵父母代肉种鸡进行强制换羽观察,试验鸡群6 369只,为62周龄母鸡。换羽前平均体重4 230 g,产蛋率35%。对换羽期死淘情况、体重变化、产蛋率变化进行观察记录。结果表明:强制换羽后42天见蛋,见蛋后6周产蛋率上升到66%,种蛋平均合格率95%以上;恢复产蛋前死亡155只,占全群2.43%,第2周死亡最多,达38只;换羽第4周累计失重920 g,失重率21.7%。该次换羽结果较理想。Starving method was used to study the forced molting of Avian patent stock, 6 369 hens at 62 weeks of age were involved in this thesis. The average body weight before molting was 4 230 gram, and the average rate of egg production was 35%. The results showed that: First egg was laid after 42 days, and 6 weeks later, the average rate of egg production rose to 66%. Qualified egg rate was up to 95% .Death quantity in the second week after molting was most, the death rate before laying was 2.43 %. The total body weight loss was 920 gram in 4th week after molting, the total loss rate was 21.7 %.
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