中国畜牧兽医2016，Vol.43Issue(7)：1766-1773,8.DOI:10.16431/j.cnki.1671-7236.2016.07.017
湖寒杂交F1代与小尾寒羊生长性能比较研究
Comparison on the Growth Performance between F1 Hybrid of Small-tail Han Sheep × Hu Sheep and Small-tail Han Sheep
摘要
Abstract
This experiment was carried out to evaluate heterosis of the F1 hybrid of female Small-tail Han sheep and male Hu sheep in growth performance.The newborn lambs from Small-tail Han sheep and F1 hybrid of Small-tail Han sheep × Hu sheep were used in supplementary feed-ing (6 to 45 days old )and fattening (46 to 150 days old)under the same conditions.The results showed that F1 hybrid were extremely significantly higher than Small-tail Han sheep in birth weight,weaning weight,three months weight and five months weight (P<0.01),which were in-creased by 20.00%,25.17%,19.92% and 20.42%,respectively.The average daily gain of F1 were also extremely significantly higher than that of Small-tail Han sheep in both supplementary feeding period and fattening period (P<0.01),the increase were 26.91% and 17.63%,respec-tively.At 5-month old,body height,chest circumference and cannon circumference of F1 hybrid were extremely significantly higher than that of Small-tail Han sheep (P<0.01),but the body length had no significant difference (P>0.05).The diarrhea rate of F1 hybrid was 8.33% lower than that of Small-tail Han sheep,and the survival rate was 5.55% higher.In addition,the eco-nomic benefit of F1 hybrid was 69.34% more than that of Small-tail Han sheep at the end of the experiment.The results suggested that the heterosis was obvious,meanwhile the survival rate and pre-slaughter live weight of F1 progenies could be significantly improved.关键词
小尾寒羊/湖羊/杂交/生长性能Key words
Small-tail Han sheep/Hu sheep/hybrid/growth performance分类
农业科技引用本文复制引用
许开云,董伟,李晓燕,汪裕龙..湖寒杂交F1代与小尾寒羊生长性能比较研究[J].中国畜牧兽医,2016,43(7):1766-1773,8.基金项目
农业科技推广项目资金 （）
