柠檬酸对肉仔鸡生产性能和血气指标的影响  

Effect of Citric Acid on Performance and Blood Indexes of Broilers

作　　者：马书宇[1] 

机构地区：[1]中国农业科学院饲料研究所,北京100081

出　　处：《粮食与饲料工业》2002年第8期31-33,共3页Cereal & Feed Industry

摘　　要：选用 6 30只雏鸡随机分成 5个处理 ,每个处理设 6个重复 ,每个重复 2 1只鸡。分别饲喂添加 0 % ,0 .5 % ,1.0 % ,1.5 %及 2 .0 %柠檬酸的 5种等代谢能、等蛋白试验日粮 ,试验日粮中不添加任何抗生素。研究结果表明 :①在玉米 -豆粕型肉仔鸡日粮中添加 1.0 %柠檬酸 ,在 0～ 2 1日龄阶段日增重显著高于对照组 (P <0 .0 5 ) ;耗料增重比显著低于对照组及其他处理组 (P <0 .0 5 )。添加2 .0 %柠檬酸 ,在 0～ 2 1日龄阶段日增重、日采食量显著低于对照组及其他处理组 (P <0 .0 5 ) ;耗料增重比显著高于对照组及其他处理组 (P <0 .0 5 )。在 2 1～ 4 2日龄阶段日增重显著低于对照组及其他处理组 (P <0 .0 5 )。②日粮柠檬酸添加水平显著影响 2 1日龄及 4 2日龄肉仔鸡血液碱储和血液碱超水平 (P <0 .0 5 ) ;chicks were chosen and randomly divided into 5 treatment groups, each treatment had 6 replicates, and each replicate had 21chicks. The birds were fed with the experiment diets added with 5 levels of citric acid (0, 0.5%, 1.0% , 1.5% , 2.0%), and the diets were equal in metabolic energy and protein. All the experimental diets were not added with any antibiotics. The test results showed that: ① with a supplement of 1.0% citric acid in corn-soybean meal broiler diet, during the stage of 0～21 days the daily gain of the birds in the test groups was obviously higher than that of the control group ( P <0.05), and the feed conversion was remarkably lower than the control and other test groups ( P <0.05). With a supplement of 2.0% citric acid, during the stage of 0～21 days the daily gain and daily intake of the birds in the test groups was obviously lower than that of the control and other test groups ( P <0.05), and their feed conversion was notably higher than that of the control and other test groups ( P <0.05). ② The supplement level of citric acid in diet obviously affects the SB and BE levels of the broilers of 21 and 42 days ( P <0.05), but does not obviously affect the pH value of blood.

关 键 词：柠檬酸 肉仔鸡 生产性能 血气指标 饲料添加剂 

分 类 号：S816.79[农业科学—饲料科学] S831.5[农业科学—畜牧学]