加什科羊生长发育规律的观测

OBSERVATION ON PATTERN OF GROWTH AND DEVELOPMENT THE REGULARITY OF JIASHIKE SHEEP

加什科羊是在高寒、干旱、半荒漠生态条件下杂交育成的新品种群。1990—1991年对加什科羊的生长发育规律和特点测定结果:平均初生重3.42kg,5月龄断奶重28.45kg。成年体重36.86kg,与相同生态环境下的青海半细毛羊同期断奶重比较,提高近6.0kg。这体现出加什科羊具有早期生长发育较快的特点,为今后加什科羊的选育提高和改善饲养管理提供了科学依据。

Jiashike sheep is a new kind of variety population that was reared by crossbreeding under the ecological condition of alpine, cold and arid semi-desert. During 1990 and 1991, the growth and development regularity and characteristics of Jiashike sheep were observed and the results showed as follows: The average brith weight was 3.42kg; the weaning weight (5 months) was 28.45kg; the adult body weight was 36.86kg. The weaning weight (5 months)was about 6 kg higher than that of the Qinghai Semi-fine Wool Sheep under the same ecological environment. This indicate that the sheep has got the characteristic of faster rate of growth and development in early stage which provides a scientific foundation for further research in selecting and improving feeding and management of the sheep.