复合微量元素添加水平对鸡产蛋性能及养分代谢率的影响  

Effects of dietary contents of trace elements on the performance and nutrient apparent metabolic engergy of laying hens

作　　者：姚军虎[1,2] 张新阳[1] 张涛[1] 张农田 张锦轩 

机构地区：[1]西北农林科技大学动物科技学院 [2]陕西杨凌富仕特饲料有限公司,陕西杨陵712100 [3]陕西频源责任有限公司 [4]陕西杨凌富仕特饲料有限公司

出　　处：《西北农林科技大学学报（自然科学版）》2003年第2期36-40,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：陕西省自然科学基金资助项目 (99SM0 1) ;杨凌示范区科研专项基金资助项目 (99KG12 )

摘　　要：将 170日龄尼克红蛋鸡 5 4 0只随机等分为 3组 ,在基础日粮中分别添加 3个水平的复合微量元素。结果表明 ,微量元素添加量不同对采食量、产蛋量、日粮风干物表观代谢率以及能量表观代谢率无显著影响(P>0 .0 5 ) ,添加高水平微量元素时日粮粗蛋白、总氨基酸、必需氨基酸表观代谢率分别比低水平时提高 13.87% ,4 .30 %和 4 .30 % (P<0 .0 5 )。综合分析揭示 ,添加后日粮微量元素的总含量以 Fe,Cu,Zn,Mn,Se和 I分别为16 0 .72 ,16 .80 ,10 2 .0 0 ,80 .6 1,0 .13,0 .2 5 m g/ kg为宜。540 laying hens were equally divided into 3 groups.3 levels of trace elements were added into the same basal diet.The experiment showed that the dietary contents of trace elements do not affect ratio of laying,feed efficiency,egg yield and the apparent metabolic rate of air dry matter and energy ( P > 0.05 ).The highest level of trace elements could increase the apparent metabolic rate of crude protein,total amino acids and essential amino acids 13.87%,4.30% and 4.30%,respectively ( P <0.05).The suggested dietary contents (mg/kg) of main trace elements be as following,Fe 160.72,Cu 16.80,Zn 102.00,Mn 80.61 ,Se 0.13 and I 0.25.

关 键 词：复合微量元素 产蛋性能 养分代谢率 饲料添加剂 蛋鸡 

分 类 号：S831.5[农业科学—畜牧学] S816.72[农业科学—畜牧兽医]