铜与维生素A及其互作效应对肉仔鸡钙磷代谢及激素的影响  

Effect of Interaction of Copper and Vitamin A on Metabolism of Calcium and Phosphorus and Hormone in Broilers

作　　者：张利环[1] 李玲香[2] 张春善[3] 张瑜[2] 卢海强[1] 蔡永强[1] 常亚琦[2] 

机构地区：[1]山西农业大学生命科学学院,山西太谷030801 [2]山西农业大学动物科技学院,山西太谷030801 [3]河北科技师范学院动物科学系,河北昌黎066000

出　　处：《中国畜牧杂志》2014年第21期36-42,共7页Chinese Journal of Animal Science

基　　金：山西省科技攻关项目基金(20140311021-4);河北科技师范学院博士科研启动项目基金

摘　　要：本试验选用448只1日龄艾维因肉仔鸡,将其随机分为8组,每组4个重复,每个重复14只（公、母各半）,采用4×2（铜×维生素A）完全随机设计,日粮添加不同铜水平（0、8、150、225 mg/kg）和维生素A（1 500、5 000 IU/kg）对肉仔鸡不同生长阶段（0-4周龄和5-7周龄）的钙磷代谢及生长激素和胰岛素的影响。结果表明：日粮中不同铜水平对前期血清钙含量影响显著（P〈0.05）,高铜组（225 mg/kg）则对血清钙磷的含量及胫骨钙磷的沉积有抑制作用,并且降低了胰岛素浓度;日粮中添加维生素A对前期血清钙磷的含量影响显著（P〈0.05）,维生素A（5 000 IU/kg）组对胫骨钙磷的沉积有促进作用,并且显著降低了胰岛素浓度（P〈0.05）;铜与维生素A互作效应对全期血清磷含量影响显著（P〈0.05）,对前期血清胰岛素浓度影响极显著（P〈0.01）。结果显示,铜和维生素A间存在互作效应,且对肉仔鸡钙磷代谢、生长激素及胰岛素浓度有影响。推荐日粮中铜的适宜添加量前期为8 mg/kg、后期为0-8 mg/kg,全期维生素A的适宜添加量为5 000 IU/kg。A 4 ×2 completely random experimen t was designed to study the influence of copper and vitamin A on metabolism of calcium, phosphorus, growth hormone and insulin in broilers. Atotal of 448 broilers were divided into 8 treatments with 4 replicates, and 14 birds per replicate. Copper supplemental level was 0, 8, 150, 225 mg/kg respetively; Vitamin A supplemental amount was 1500 or 5 000 IU/kg. The result showed that Dietary Cu levels affected the concentration of Ca in serum from 0 to 4 weeks（ P〈0.05）. The concentration of Ca and P in serum and in tibia in the treatment of Cu 225 mg/kg group were the lowest, and the total period of high Cu inhibited the concentration of insulin in broilers. Dietary VA levels affected significantly the concentration of Ca and P in serum from 0 to 4 weeks（P〈0.05）, the concentration of Ca and P in tibia in the treatment of 5 000 IU/kg VA were the highest,and VA 5 000 IU/kg inhibited the concentration of insulin. The interaction between Cu and VA influenced the concentration of P in serum significantly during the whole period（ P〈0.05）, and influenced the concentration of insulin significantly at the end of week 4（P〈0.01）. The results showed that copper and vitamin A interaction had an effect on the function of metabolism of calcium, phosphorus and hormone in broilers. Appropriate copper supplemental level in dietary was 8 mg/kg from 0 to 4 weeks, and 0-8 mg/kg from 5 to 7 weeks. Appropriate vitamin A supplemental level was 5000 IU/kg in the whole period.

关 键 词：铜 维生素A 互作效应 钙磷代谢 生长激素 胰岛素 肉仔鸡 

分 类 号：S831.5[农业科学—畜牧学]