不同季节牧草钙磷含量对放牧绵羊血清骨钙素的影响

研究了不同季节牧草钙磷含量对放牧绵羊血清骨钙素、碱性磷酸酶、血清钙、无机磷、血清钙磷比和血清钙磷乘积的影响。结果表明:这些血清指标随季节变化明显,血清骨钙素夏季含量为(2.009±0.888)ng/mL,极显著的低于冬春季(3.974±1.281)ng/mL和秋季(3.279±1.365)ng/mL的含量(P<0.05)。从相关分析中看出,骨钙素与AKP、血钙、无机磷、血钙/磷和血钙磷乘积呈正相关,相关系数分别为0.047、0.546、0.035、0.394、0.489。与牧草钙、磷和钙磷比呈负相关,尤其与牧草钙的相关系数达-0.657(P<0.01)。利用逐步回归的方法得出的骨钙素与牧草钙、血清钙的多元回归方程为:骨钙素=1.813-2.358牧草钙+0.945血清钙(P<0.05)。认为血清骨钙素可以作为反映放牧绵羊钙磷盈缺状况的灵敏指标。

Effects of calcium and phosphorus of herbage in different seasons on serum BGP of grazing sheep

Effects of calcium and phosphorus of herbage in different seasons on serum BGP, AKP, serum Ca, Serum P, serum Ca/P, serum Ca×P of grazing sheep were studied. The results showed that all these indexes changed obviously with seasons. The serum BGP in summer was (2.009×0.888)ng/mL, it was significantly lower than that in spring (3.974×1.281)ng/mL and fall (3.279×1.365)ng/mL (P<0.05). Correlation analysis showed that the BGP had positive correlation with AKP, serum Ca, serum P, serum Ca/P and serum Ca×P, correlation coefficients were 0.047, 0.546, 0.035, 0.394 and 0.489, respectively. On the contrary, BGP had negative correlation with herbage Ca, P and Ca/P. By using the method of stepwise regression, the regression equation BGP=1.813-2.358 herbage Ca+0.945 serum Ca (P<0.05) was gained. So it was concluded that BGP was a sensitive index which could reflect the content of herbage calcium and phosphorus.