两个肉羊品种羔羊哺乳期的生长发育比较试验

Comparing test of growth and development between the lambs of two mutton breeds during lactation period

选择相同条件下饲养的宁夏农垦种羊场纯种萨福克(SF)羔羊76只(公38只,母38只)、特克塞尔(TX)羔羊34只(公15只,母19只),两肉羊品种共110只,测定初生体质量和初生体高、体长、胸围及断奶体质量和断奶体高、体长、胸围.结果表明:萨福克和特克塞尔两肉羊公母羔羊在胚胎期的生长发育基本相近,公母羔羊的初生体质量和初生体格大小差异不大,两品种间差异不显著(P>0.05).到断奶时,萨福克公母羔羊的断奶体质量和体格极显著(P<0.01)地重于和大于特克塞尔公母羔羊,说明萨福克公母羔羊在哺乳期的生长发育速度极显著地(P<0.01)快于特克塞尔公母羔羊.

76 Suffolk（SF） lambs （38 male and 38 female） and 34 Texcel（TX） lambs （15 males and 19 female） in the tupping ram farm of agricultural reclamation in Ningxia were selected to measure birth weight, birth withers height, body length, heart girth, weaning weight, weaning withers height, weaning body length and weaning heart girth under the same feeding condition. The result showed that the growth and development in embryo period of male and female lambs of Suffolk and Texcel was basically similar and the birth body size and birth weight of male and female lambs had no significant differences between two breeds （P〉0. 05）. after weaning, the weaning body size and weaning weight of Suffolk lambs was significantly larger and weightier than those of male and female lambs of Texcel （P〈0.01）. This showed that the growth and development of male and female lambs of Suffolk during weaning period were significantly faster than male and female lambs of Texcel （P〈0.01）.