【摘要】 在宁夏滩羊体大品系的选育工作中，对宁夏滩羊裘皮系，体大品系及其杂交后代血清中ＧＨ及ＩＧＦ－１进行了测定分析，结果显示①体大品系公羊（♂）血清ＧＨ水平高于裘皮系♂，差异不显著（Ｐ＞０．０５）；体大品系母羊（♀）中的体大群、快肥群ＧＨ水平高于裘皮系♀，差异不显著（Ｐ＞０．０５）；杂交后代中，♀血清ＧＨ水平高于裘皮系♀，差异极显著（Ｐ＜０．０１＝，也高于体大品系♀。②体大品系成年♂血清ＩＧＦ－１水平高于裘皮系♂差异极显著（Ｐ＜０．０１＝，体大品系♀，血清ＩＧＦ－１水平略高于裘皮系♀，其杂交后代♂、♀血清ＩＧＦ－１水平均与裘皮系♂、♀没有明显差异（Ｐ＞０．０５），作者认为，通过对畜禽血清ＧＨ，ＩＧＦ－１水平的测定分析研究，对探讨动物生长发育规律有实践意义。血清ＧＨ，ＩＧＦ－１水平可作为生理遗传标记，为畜禽的选育工作提供有科学价值的理论依据。更多还原

【Abstract】 During the selection and breeding of the large-body Ningxia Tan Sheep strain, the GH and IGF-1 in the serum of the fur-coat Ningxia Tan Sheep strain and the large-body Ningxia Tan Sheep strain as well as the cross-bred generations of the two strains were measured and analyzed. The results showed:1)The male sheep of the large-body strain(♂)had a slightly higher serum GH level than that of the fur-coat strain(♂)(p>0.0.05);the female sheep of the large body and the quick-fattening groups in the large-body strain(♀)had a slightly higher serum GH level than that of the fur-coat strain(♀)(p>0.05); in the cross-bred generations,(♀) serum GH level was remarkably higher than that of the fur-coat strain (♀)(p<0.01)and also higher than that of the large-body strain(♀). 2)The adult large-body strain (♂) had a remarkably higher serum IGF-1 level than that of the fur-coat strain (♂) (p<0.01);the large-body strain(♀) had a slightly higher serum IFG-1 level than that of the fur-coat strain (♀); the cross-bred generations (♂) and (♀)serum IGF-1levels showed a little difference from those of the fur-coat strain (♂) and (♀) (p>0.05). The authors believe that the measurement and anslysis of the serum GH and IGF-1 in domestic animals have a profound meaning in the discouery of the growing regularities of the animals. Lised as genetic symbols, serum GH and IGF-1 can offer us more scientific basis in the selection and breeding of domestic animals.更多还原