庄浪县安格斯肉牛冻配改良效果分析

经试验测定，安杂犊牛初生重32.25 kg, 3月龄重121.15 kg, 6月龄重183.75 kg, 12月龄重247.46 kg, 24月龄重402.93 kg,分别较其它品种牛同期体重增长20.34%、141.33%、90.16%、26.07%和41.38%,差异极显著(P<0.01)。全县累计推广安格斯冻配改良4307头，受胎3928头，爱胎率91.2%。

Analysis on the Improvement Effect of Frozen Semen Breeding of Angus Beef Cattle in Zhuanglang County

In this test, the birth weight of Angus hybrid calves was 32.25 kg, 121.15 kg at 3 months, 183.75 kg at 6 months, 247.46 kg at 12 months, and 402.93 kg at 24 months, respectively, compared with other breeds of cattle in the same period. An increase of 20.34%, 141.33%, 90.16%, 26.07% and 41.38%, the difference was extremely significant (P < 0.01). A total of 4,307 Angus beef cattle had been promoted in the county for breeding with frozen semen, and 3,928 of them have been conceived, with a conception rate of 91.2%.