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生长早期泰和鸡与AA鸡血清生长激素水平及生长激素结合蛋白活性的比较

DOI: 10.7685/j.issn.1000-2030.2000.03.018, PP. 67-70

Keywords: ,生长激素,生长激素结合蛋白,结合活性,生长发育

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Abstract:

比较泰和鸡和AA(ArborAcres)肉鸡血清生长激素(GH)含量和生长激素结合蛋白(GHBP)的结合活性,发现两品种鸡出雏时血清GH水平均较低,5日龄时GH均有显著上升(P<001)。此后泰和鸡保持上升趋势,在35日龄GH达到最高值;而AA鸡在5日龄后血清GH水平上升幅度较小,日龄间差异不显著。1日龄和35日龄时,泰和鸡血清GH水平显著高于同日龄的AA肉鸡,与两者体重的差异刚好相反。血液GHBP活性均在出雏时较高,品种间差异不显著,5日龄时都极显著地下降(P<001);AA鸡虽直至35日龄都保持较低水平,50日龄时又显著回升(P<005);而泰和鸡5日龄后一直保持低水平,50日龄有升高趋势,但差异不显著。在5,10和50日龄,泰和鸡血中GHBP的结合活性显著低于AA肉鸡(P<005,P=005,P<001)。两品种鸡血中GHBP的结合活性与GH含量呈显著负相关

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