甘肃高山细毛羊不同杂交组合羔羊产肉性能研究

以甘肃高山细毛羊为母本，澳洲美利奴羊、邦德羊、无角陶赛特羊、白萨福克羊、特克塞尔羊、南非美利奴羊等国外优良品种为父本，开展杂交组合试验，研究6个杂交组合F1的产羔率、羔羊生长发育和产肉性能。结果表明：在高寒牧区自然放牧条件下，6个杂交组合杂交效果均十分明显，尤其是特×甘F1表现出了良好的适应性，其羔羊初生重、断奶重、胴体重、净肉重均高于其他杂交组合，分别比甘细羔羊高0．92、5．07和4．50kg（P〈0．01），屠宰率、净肉率也分别比甘细羔羊提高了4．62个百分点和4．95个百分点。

Meat Performance of Lambs in Different Cross Combinations of Gansu Alpine Merino

In this test,the Gansu Alpine Merino as the female parent,the Australian Marino,Bond,Polled Dorset,White Suffolk, Texel and SA Mutton Merino as male parents, were used to carry out two-way cross for studying their lambs, growth and development and meat performance in grazing condition.The results showed that the cross effects were obvious, especially in TxG combination,the F~ had good adaptability and the birth weight,weaning weight, carcass weight,meat weight were superior to other cross combinations,and were higher by 0.92 kg,5.07 kg and 4.50kg than those of Gansu Alpine Merino lambs （P〈0.01） respectively,the dressing percentage,meat percentage were higher by 4.62,4.95 percentage points than those of Gansu Alpine Merino lambs.