有机锰与有机铬对肉鸡生长性能、屠体性状及脂质代谢的影响

选用1日龄健康艾维茵肉仔鸡360只,随机分为9组,采用3×3(铬×锰)2因子3水平重复交叉试验设计,在玉米-豆粕型日粮基础上补充不同水平有机锰(以锰计:0,60,120 mg/kg)与有机铬(以铬计:0,400,600μg/kg),以饲喂基础日粮组为对照组,研究锰与铬2种微量元素对肉鸡生长性能、屠体性状以及3,5,7周末血清中总胆固醇(TC)、总甘油三酯(TG)、葡萄糖(Glu)、总蛋白(TP)、总氨基酸(TAA)及尿素氮(BUN)等脂质代谢指标动态变化的影响,初步探讨二者的互作效应。结果表明:添加锰、铬及其互作对肉鸡生长性能及屠体性状影响不显著;添加120 mg/kg锰或400μg/kg铬或二者互作对各阶段肉鸡脂肪代谢指标均表现显著互作效应(P<0.05或P<0.01),有显著降低肉鸡脂肪沉积的趋势;锰与铬互作显著改善蛋白质代谢(P<0.05或P<0.01)。

Effect of Supplemental Organic Manganese or Chromium on Growth Performance, Carcass Traits and Dynamic Lipid Metabolism Indexes in Broilers

The effects of organic manganese(0,60 and 120 mg/kg) and organic chromium(0,400 and 600 g/kg) supplementation to the corn-soybean basal diets on the growth performance and serum concentration of TC,TG,Glu,TP,TAA and BUN in the lipid metabolism of broilers were investigated estigated.The results were as follows:!supplemental manganese or chromium had no significant effects on growth performance and carcass traits of broilers(P>0.05).Supplemental 120mg/kg manganese or 400 μg/kg chromium or manganese and chromium conbination had significant interaction effects on all indexes in lipid metabolism of broilers(P<0.05 or 0.01) that showed a tendency to reduce fat deposition.The interaction between manganese and chromium had significant effects on all indexes of protein metabolism(P<0.05 or 0.01),that showed significant interaction effects on the protein metabolism.