CAJ | 학술논문

利用阴道海绵栓法和孕马血清同期化处理试验母羊,通过人工授精的方式,采用杜泊种公羊和巴美肉羊种公羊与巴寒杂交F1代母羊和杜寒杂交F1代母羊进行三元杂交,作为试验组;选择同龄当地小尾寒羊种公羊和小尾寒羊母羊自然交配,作为对照组,进行比较,观察杂交改良后的效果。结果表明,杂交F1代母羊的受胎率、产羔率低于小尾寒羊,但在生产性能方面,三元杂交F2代羔羊平均初生重和1月龄体重比当地小尾寒羊分别提高1.68kg和2.02kg;在相同的饲养管理条件下,三元杂交F2代羔羊体高、体长、胸围等均高于当地同龄小尾寒羊,其生长发育速度显著快于当地小尾寒羊。由此可以得出,以杜泊种公羊和巴美肉羊种公羊与巴寒杂交F1代母羊和杜寒杂交F1代母羊进行三元杂交改良,改良效果明显。
이용음도해면전법화잉마혈청동기화처리시험모양,통과인공수정적방식,채용두박충공양화파미육양충공양여파한잡교F1대모양화두한잡교F1대모양진행삼원잡교,작위시험조;선택동령당지소미한양충공양화소미한양모양자연교배,작위대조조,진행비교,관찰잡교개량후적효과。결과표명,잡교F1대모양적수태솔、산고솔저우소미한양,단재생산성능방면,삼원잡교F2대고양평균초생중화1월령체중비당지소미한양분별제고1.68kg화2.02kg;재상동적사양관리조건하,삼원잡교F2대고양체고、체장、흉위등균고우당지동령소미한양,기생장발육속도현저쾌우당지소미한양。유차가이득출,이두박충공양화파미육양충공양여파한잡교F1대모양화두한잡교F1대모양진행삼원잡교개량,개량효과명현。
After tested female sheep were treated by using vaginal sponge method and pregnant mare serum, male Dorper sheep and male Bamei sheep were improved by three-way cross with female Bahan F1 hybrid sheep and female Duhan F1 hybrid sheep by using artificial insemination, meanwhile male small-tail Hart sheep of the same age was mated with female small-tail Han sheep, which was taken as control. The improvement effect was observed. Results showed that the conception rate and lambing rate of female FI hybrid sheep were lower than that of small-tail Han sheep; but in the aspect of production performance, the average birth weight and the weight at 1 month of age of F2 three-way hybrid sheep were increased by 1.68 kg and 2.02 kg compared with local small-tail Han sheep; under the same feeding and management conditions, the height at withers, body length and heart girth F2 three-way hybrid sheep were higher than that of local small-tail Han sheep. Therefore, the improvement effect was obvious when male Dorper sheep and male Bamei sheep were improved by three-way cross with female Bahan Fi hybrid sheep and female Duhan Fl hybrid sheep.