铜、维生素A及互作效应对肉仔鸡糖脂代谢的影响

Effect of Interaction of Copper and VA on Glucose and Lipid Metabolism in Broilers

选用1日龄艾维因肉仔鸡448只，随机分为8个组，每个组4个重复，每个重复14只鸡（公母各1／2）。采用4×2（Cu×VA）完全随机设计，日粮Cu的添加量为0、8、150和225mg／kg，VA的添加量为1500和5000IU／kg，探讨肉仔鸡体内Cu与VA对血清糖脂代谢的影响。结果表明：低Cu（0～8mg／kg）组显著降低血糖（GLU）、血清胆固醇（CHO）和血清高密度脂蛋白（HDL）浓度，显著提高血清胰岛素（INS）、血清甘油三酯（TG）和血清乳酸脱氢酶（LDH）浓度；高VA（5000IU／kg）组极显著降低GLU、CHO、TG、HDL和LDH浓度，极显著提高INS浓度；Cu（225mg／kg）×VA（5000IU／kg）组显著降低GLU、INS、CHO和TG浓度，Cu（0～8mg／kg）×VA（5000IU／kg）组极显著降低血清HDL和LDH浓度。因此，在肉仔鸡日粮中另外添加Cu水平为0～8mg／kg，VA水平为5000IU／kg时，有利于肉仔鸡糖原及脂肪合成。

A 4 × 2 completely random experiment was designed to study the influence of copper and VA on protein metabolism and the related enzymes. Four hundred and forty-eight one-day broilers were divided into 8 treatments with 4 replicates of 14 broilers （half male and half female） each replicate randomly. The results showed that the concentration of GLU,serum CHO and serum HDL in the treatment of Cu （0 ～8 mg/kg） were the lowest. The concentration of serum INS,serum TG and serum LDH in the treatment of Cu （0～8 mg/kg） were the highest. The concentration of GLU,serum CHO,serum TG,serum HDL and serum LDH in the treatment of VA （5 000 IU/kg） were the lowest. The concentration of serum INS in the treatment of VA （5 000 IU/kg） were the highest. The concentration of GLU,serum INS,serum CHO and serum TG in the treatment of Cu （225 mg/kg） × VA（5 000 IU/kg）were the lowest. The concentration of serum HDL and serum LDH in the treatment of Cu （0～8 mg/kg） × VA（5 000 IU/kg）were the lowest. The conclusion can be made that the treatment of Cu （0～8 mg/kg）, VA （5 000 IU/kg） was beneficial for the glycogen composes,the lipid composes on broilers.