不同肉牛杂交组合筛选试验研究

近年来,通渭县引进大量的良种肉牛冻精,冻配改良了本地肉牛,为提高肉牛杂交改良效果,提高单体经济效益,增加农户养牛收入。对引进的肉牛杂交改良本地肉牛进行了试验研究。在通渭县以夏洛来为父本、西本杂交牛为母本,杂交一代肉牛初生重达到36.4 kg,平均日增重达到689.3 g,18月龄夏西本体高18月龄达到146.4 cm,体斜长达到158.8 cm,胸围达到192.8 cm,管围达到20.2 cm。18月龄夏西本体高比利西本高15.8%,体斜长比夏利本高14.7%,胸围比利西本高17.0%,管围比夏利本和利西本高5.7%。因此以夏洛来为终端父本,西门塔尔与本地黄牛杂交F_1为母本,进行杂交改良,其生长速度快,个体较大,能快速提高三元杂交肉牛经济效益。

Study of Growth and Development of F_1 Improved Local Cattle in Dangchang by Simmental Cattle

In recent years, a large number of fine beef cattle frozen semen have been introduced into Tongwei county, frozen improved with local beef cattle. In order to improve the effect of crossbreeding of beef cattle, to increase the economic benefit of monomers and increase the income of cattle raising by farmers, this experiment was carried out to improve the local beef cattle by crossbreeding with imported beef cattle. In Tongwei county, Charolais as male parent and Xiben hybrid cattle as female parent, the primary weight and average daily gain of the first generation of crossbred beef cattle reached 36.4 kg, 689.3 g, respectively. 18-month-old Xiaxiben cattle body height reached 146.4 cm, the body oblique length reached 158.8 cm, the chest circumference reached 192.8 cm, the tube circumference reached 20.2 cm. Compared with Lixiben cattle, 18-month-old Xiaxiben cattle body height increased by 15.8%, the body oblique length increased by 14.7%, and the chest circumference increased by 17.0%. The perimeter increased by 5.7%. Therefore, Charolais as the terminal male parent, Simmental and local yellow cattle hybrid F1 as female parent, the hybrid improvement was developed, the growth speed was fast, the individuals were larger, could improve the economic benefit of the trihybrid beef cattle.