色氨酸对蛋雏鸭生长性能和营养物质代谢影响  

Effects of tryptophan on growth and nutrients metabolism of duckings

作　　者：刘肖挺[1] 王安[1] 杨小然[1] 张括[1] 

机构地区：[1]东北农业大学动物营养研究所

出　　处：《中国饲料》2012年第19期22-25,共4页China Feed

基　　金：国家自然基金委资助(30972111)

摘　　要：试验采用单因素完全随机分组设计,选择1日龄健康金定鸭雏288只,随机分为6个处理,每个处理6个重复,每个重复8只鸭,研究色氨酸对笼养蛋雏鸭生长性能和营养物质代谢的影响。Ⅰ组为对照组,饲喂玉米-豆粕型基础饲粮,Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组在基础饲粮(含色氨酸0.24%)基础上分别添加0.02%、0.04%、0.06%、0.08%、0.24%色氨酸,试验期4周。结果表明,在日粮中添加0.04%色氨酸可显著提高蛋雏鸭的平均日增重、平均日采食量、血清中的总蛋白的含量(P<0.05),显著降低血清葡萄糖和甘油三酯含量(P<0.05),但对料重比未产生显著影响(P>0.05)。在日粮中添加0.06%的色氨酸可显著提高血清中白蛋白含量,显著降低血清中总胆固醇含量(P<0.05)。由此可见,日粮中添加0.04%～0.06%的色氨酸可显著改善雏鸭的生长性能,促进蛋雏鸭对各种营养物质的代谢。The experiment was conducted to study the effects of tryptophan on growth performance and nutrition metabolic in egg-type ducks.A total of 288 one-day-old Jin ding ducks were randomly allocated to six dietary treatments with six replicates of eight each.All the egg-type ducks were fed with corn-soybean meal basal diets supplemented with 0 %,0.02 %,0.04 %,0.06 %,0.08 % and 0.24 % tryptophan,respectively.Experimental period was four weeks.The results showed as follows：average daily gain,average daily feed intake of 0.04 % tryptop han adding group were improved significantly;Total Protein（TP）content increased significantly in serum（P0.05）;glucose（GLU）and Triglyceride（TG）content decreased significantly in serum（P0.05）;but the ratio of feed to gain of all treat ments had no significant effecte（P0.05）,and albumin（ALB）content of 0.06 % tryptophan adding group was increased significantly in serum（P0.05）.Total cholesterol（TC）content was decreased significantly in serum.In conclusion,supplementation with 0.04 % ～ 0.06 % tryptophan could improve the growth performance,nutrients metabolism of egg-type ducks.

关 键 词：色氨酸 蛋雏鸭 生长性能 营养物质代谢 

分 类 号：S816.4[农业科学—饲料科学]