摘要
以德国美利奴羊为父本,小尾寒羊为母本进行杂交,对杂交一代的生长状况、产肉性能及肉用品质进行测定分析.结果表明:德×寒F1羔羊平均初生质量4.10 kg,9月龄、12月龄日增质量分别为122.67 g和110.80 g,均显著高于小尾寒羊(P<0.05).体长、胸围、胸深、胸宽、管围比小尾寒羊均显著提高(P<0.05).1岁德×寒F1的GR值平均为1.42 cm,高出小尾寒羊0.61 cm;眼肌面积为18.79 cm2,比小尾寒羊高2.35 cm2,差异显著(P<0.05);屠宰率、净肉率和胴体净肉率分别比小尾寒羊提高5.40%6、.40%和5.67%,差异均显著(P<0.05).肉质评定结果:杂交F1代肉呈鲜红色(3.80),大理石纹明显;熟肉率为46.48%,显著高于小尾寒羊(P<0.05);剪切力为3.34 kg,显著低于小尾寒羊(P<0.05).结果表明杂种羊产肉性能和肉用品质显著提高,杂交改良效果明显.
The growth rate, meat productivity and meat quality of German Mutton Merino× Small Tail Han Sheep F1 were measured and analyzed. The results showed that the average birth weight of GMM × Han F1 was 4.10 kg,the ADG of 9 months and 12 months were 122. 67 g and 110.80 g,which were significantly higher than Han Sheep（P〈0.05）. The body length, chest circumference, chest depth, chest width and cannon circumference of hybrids were all larger than those of Han Sheep （P〈0 05）. GR index was 1.42 cm,the loin eye area was 18.79 cm^2 ,these figures are higher than Han Sheep （P〈0 05）. The dressing percentage,the net mutton ratio and the meat percentage of carcass were 46. 80 % ,35.80 % and 76. 47 respectively,those of the GMM × Han F1 increased 5.40%, 6. 40% and 5. 67% compared with Han Sheep respectively. Evaluation of the meat showed that the meat colour was bright red（3. 80 points） with apparent marbling,the percentage of cooked of hybrids （46. 48%） was higher than Han Sheep,but the shear force（3.34 kg） was significantly lower than Han Sheep（P〈0 05）.
出处
《甘肃农业大学学报》
CAS
CSCD
2008年第4期46-50,共5页
Journal of Gansu Agricultural University
基金
甘肃省农业生物技术研究与应用开发项目(GNSW-2005-11)
关键词
德国美利奴羊
小尾寒羊
杂交
生长
产肉性能
German Mutton Merino
Small Tail Han Sheep
crossbreed
growth
meat productivity
