青海小尾寒羊与藏羊杂交后代初生重比较分析

Effects of Small Tailed Han Sheep and Tibetan Sheep Cross on the Birth Weight of Descendant

本文比较了小尾寒羊与藏羊杂交后代和纯种藏羊后代初生体重及体尺。2018年,笔者使用山东小尾寒羊与青海藏羊冷冻精液,对3岁龄~4岁龄、体重相近的发情期藏羊母羊进行人工授精。羊羔出生后,称量初生体重与体尺。结果表明,小尾寒羊与藏羊杂交产生的后代初生体重和体尺均显著大于纯种藏羊后代,而不同性别的后代初生体重与体尺均没有显著差异。本试验为藏羊品种改良提供了新的依据。

The birth weight andmeasurementsof hybridization Small tailed Han sheep and Tibetan sheep cross were determined. Using the frozen semen of Small tailed Han sheep and Tibetan sheep, 3-4 years old female Tibetan sheep were fertilized by artificial insemination technology. The birth weight andmeasurementsof descendants were tested in 2 hours after birth. The results showed that the birth weight andmeasurementsof hybridization Small tailed Han sheep and Tibetan sheep cross were significantly higher than the descendant of Tibetan sheep, while there were no significant differences between sexes(P=0.66).