摘要
对32头西门塔尔♂×荷斯坦奶牛♀早杂交后代生长发育规律进行观测,结果表明:杂种牛的平均初生重39.83kg,6月龄141.47kg,12月龄体重达415.38kg,与荷斯坦幼牛比较,体现出明显的杂交优势和生长发育较快的特点。
The reguiarity of growth and development were observed on 32 Simmental × Holstein-Friesian hybrid progeny.The results showed that the hybrid cattie birth weight average was 39.83kg,the body weight was 141,47kg in 6 months,and 415.38kg in 12 months, Compared with Holstein-Friesian the hybrid progenys have the charac- ters of hybrid vigor and growed faster.
