摘要
对223只德寒F1代母羊的生长发育资料的统计分析,结果表明:F1代母羊体高、胸围、体重均大于小尾寒羊;体长较小尾寒羊差异不显著。统计分析56只F1代母羊的繁殖性能结果:初情期为188.3±11.6d,初配月龄和初产月龄分别为7.2±0.38和12.7±0.44;初配体重为40.1±5.5kg;发情周期约为17d左右,发情持续期约为30h左右;产后第一次发情,第一胎为44.9±11.5d,第二胎为36.8±15.2d;产后配种天数,第一胎为70.8±21.0d,第二胎为58.2±18.4d;怀孕天数为149d左右;1～2胎的产羔间隔为219.5±15.4d,2～3胎的产羔间隔为207.4±19.8d。F1代母羊第一胎产羔数为1.63±0.5,第二胎为2.01±0.3;产羔窝重和断奶窝重各胎次均大于小尾寒羊;羔羊断奶重和成活率比小尾寒羊有明显提高。
Analysed the growthiness records from 223 Hybrid ewes, the results show that height at withers and heart girth and body weight of F1-ewe lambs is bigger than Xiao wei Hanyang, while body length is shorter before yearling. The body type of ewe tegs are larger than Xiao wei Hanyang. Statistics the reproductive capacity of 56 ewe tegs, the results show that the first time oestruse is 188.3±11.6d, 21.1d latter than Xiao wei Hanyang, The first time tupping period is 7.2±0.38 month, the first time tupping weight is 40.1±5.5kg,estrous cycle is about 17d,duration of estrus is about 30h,pregnancy period is about 149d. Postpartum estrus of the first bird ewe tegs is 44.9±11.5d and the second is 36.8±15.2d. Postpartum tupping of the first bird ewe tegs is 70.8±21.0d and the second is 58.2±18.4d.Lambing interval between first and second lambing is 219.5±15.4d and second to third is 207.4±19.8d. The percentage of lambs in the first lambing reach 1.63±0.5and second 2.01±0.3. Both birth weight and weaning weight are beyond Xiaowei Hanyang ewes.
出处
《草食家畜》
2004年第1期27-30,共4页
Grass-Feeding Livestock
基金
天津市农业重点科技攻关项目---肉羊合成系技术研究资助
项目编号:033121611
关键词
德国美利奴
小尾寒羊
Fl代母羊
繁殖性能
German Muttoo Merino
Xiaowei Hanyang
Hybrid Ewes
Reproductive capacity
