Crossbreeding Results and Comparative Analysis of Euler Type Tibetan Sheep

Abstract:

In this study, in order to promote fine breeds to become dominant species in alpine pastoral areas, purebred Euler Tibetan sheep were selected as male parents, Qinghai Tibetan sheep and Smalltailed Han sheep were used as female parents, and three groups of A, B and C were crossed and bred. The test results showed that the birth weight of hybrid lambs was 4.3 kg in group A, 3.7 kg in group B, 4.4 kg in group C, and 0.8, 0.7 and 1.2 kg in the control group, respectively. The birth weights of A, B and C were significantly different from those of the control group (P< 0.01). Among them, group C had the largest birth weight. Compared with the control group, the carcass weight of the 12-month-old hybrid sheep increased by 109% in the Euler type Tibetan sheep and Qinghai Tibetan sheep hybrid group, and 88% in the Euler type Tibetan sheep and Smalltailed Han sheep hybrid group. The improvement rate of hybrid Tibetan sheep and Qinghai Tibetan sheep was 60%, which was significantly different from that of the control group (P< 0.01). The body weight of adult rams of Eulertype Tibetan hybrids is 9.5% higher than that of Qinghai Tibetan sheep, 7.2% higher than that of ewes, and 4.2% higher than that of smalltailed Han sheep, and 5.8% higher than that of ewes. The highenergy, highprotein, lowfat and lowcholesterol characteristics of its meat quality are still rising, and the amino acid content is more abundant.