低蛋白氨基酸平衡饲粮对福建龙岩蛋鸭生产性能、蛋品质、血清指标和氮排放的影响  

Effects of low protein amino acid balanced diet on production performance,egg quality,serum index,and nitrogen emission of Longyan laying ducks

作　　者：许云英 丁梓钊 肖长峰[2] 吕文纬 潘明官 王惠影[2] 朱丽慧 XU Yun-ying;DING Zi-zhao;XIAO Chang-feng;LÜWen-wei;PAN Ming-guan;WANG Hui-ying;ZHU Li-hui

机构地区：[1]上海农好饲料股份有限公司,上海201501 [2]上海市农业科学院畜牧兽医研究所,上海201106

出　　处：《饲料研究》2024年第3期47-52,共6页Feed Research

基　　金：上海市科技兴农技术创新项目(项目编号:2022-02-08-00-12-F01133);上海市农业科学院卓越团队(项目编号:沪农科卓〔2022〕021);上海市金山区专家工作站(项目编号:jszjz2022001N)。

摘　　要：试验旨在研究低蛋白氨基酸平衡饲粮对产蛋高峰期龙岩蛋鸭生产性能、蛋品质、血清指标及粪氮含量的影响。选用540只140日龄健康蛋鸭,随机分为3组。对照组饲喂粗蛋白水平为17.31%的饲粮,试验1组和试验2组分别饲喂16.20%和15.30%粗蛋白平衡氨基酸的饲粮。正式试验期为98 d。结果显示:与对照组和试验2组相比,试验1组的蛋黄重和蛋重显著提高(P<0.05);试验2组血清超氧化物歧化酶(SOD)活性显著高于其他两组(P<0.05),尿素氮(BUN)含量显著高于试验1组(P<0.05)。试验2组和对照组的干物质和粗纤维表观消化率显著高于试验1组(P<0.05)。随着粗蛋白水平的降低,粗蛋白表观消化率显著升高(P<0.05),粪氮含量显著降低(P<0.05)。研究表明,产蛋高峰期蛋鸭饲粮粗蛋白水平为17.31%时降低1.0%~2.5%的粗蛋白水平,并平衡必需氨基酸,对其生产性能、蛋品质以及血清生化和抗氧化指标无负面影响,并且可以降低粪氮含量。The purpose of the experiment was to study the effects of a low protein and amino acid balanced diet on the production performance,egg quality,blood indexes,and fecal nitrogen content of Longyan laying ducks at the peak laying period.540 healthy laying ducks aged 140 days were randomly divided into three groups.The control group was fed with a 17.31%crude protein diet,and the experimental group 1 and experimental group 2 were fed with 16.20%and 15.30%crude protein balanced amino acid diets,respectively.The formal trial period was 98 days.The results showed that compared with the control group and experimental group 2,the yolk weight and egg weight of the experimental group 1 were significantly increased(P<0.05).The activity of serum SOD in the experimental group 2 was significantly higher than that in the other two groups(P<0.05),and the content of BUN in the experimental group 2 was significantly higher than that in the experimental group 1(P<0.05).The apparent digestibility of dry matter and crude fiber in experimental group 2 and control group was significantly higher than that in the experimental group 1(P<0.05).With the decrease in crude protein level,the apparent digestibility of crude protein was significantly increased(P<0.05),and fecal nitrogen content was significantly decreased(P<0.05).The study indicates that when the dietary crude protein level is 17.31%,reducing the crude protein level to 1.0%to 2.5%and balancing essential amino acids has no negative effects on production performance,egg quality,serum biochemical and antioxidant indexes,and can reduce the fecal nitrogen content of laying ducks.

关 键 词：龙岩蛋鸭 低蛋白氨基酸平衡饲粮 蛋品质 抗氧化 氮排放 

分 类 号：S834[农业科学—畜牧学]