不同化学形式的铜对仔猪生长、消化和胴体组成的影响  

THE EFFECTS OF INORGANIC OR ORGANIC COPPER ON GROWTH PERFORMANCE,DIGESTION AND CARCASS COMPOSITION OF WEANLING PIGLETS

作　　者：许梓荣[1] 吴新民[1] 

机构地区：[1]浙江农业大学饲料科学研究所

出　　处：《动物营养学报》1999年第3期29-35,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

摘　　要：１８０头“杜长大”仔猪（２１．３４±０．４４ｋｇ），按试验要求分为６组，分别饲喂添加５ｍｇ／ｋｇ、５０ｍｇ／ｋｇ、２４０ｍｇ／ｋｇ无机铜（硫酸铜）、５０ｍｇ／ｋｇ酪蛋白铜、５０ｍｇ／ｋｇ奶蛋白铜和５０ｍｇ／ｋｇ大豆蛋白铜的饲粮，试验为期３０天。结果表明：①饲粮中添加不同化学形式的铜均提高了日增重，降低了料重比，其中以５０ｍｇ／ｋｇ酪蛋白铜组最佳，日增重比对照组（５ｍｇ／ｋｇ硫酸铜）提高了１３．６％（Ｐ＜０．０５），料重比下降了９．５％，其次为２４０ｍｇ／ｋｇ无机铜组，日增重提高了１２．５％（Ｐ＜０．０５），料重比下降了８．３％（Ｐ＜０．０５）。②添加不同化学形式铜均提高了日粮粗脂肪消化率，其中以２４０ｍｇ／ｋｇ无机铜组最为显著，较对照组提高了３１．０％（Ｐ＜０．０５），其次为５０ｍｇ／ｋｇ酪蛋白铜组，提高了２９．１％（Ｐ＜０．０５），但是添加无机铜（硫酸铜）和蛋白铜对干物质和粗蛋白表观消化率均无明显影响。③添加铜对仔猪胴体组成无明显影响，但２４０ｍｇ／ｋｇ无机铜组和酪蛋白铜组肌肉失水率略有升高，色泽呈下降趋势。④２４０ｍｇ／ｋｇ无机铜组和５０ｍｇ／ｋｇ酪蛋白铜组的脑铜含量显著升高，分别较对照组提高了３３．１?One hundred and eighty weanling pigs(Daroc×Landrace×Yorkshine) were used to study the effects of adding 5mg/kg,50mg/kg,240mg/kg inorganic copper(Copper sulfate)and 50mg/kg copper casein proteinate,50mg/kg copper milk proteinate,50mg/kg copper soybean proteinate in basic diet on the growth performance,digestion and carcass composition over the live weight ranging from 21 to 42kg.The results showed that adding 50mg/kg copper casein proteinate and 240mg/kg inorganic copper improved the ADG by 13.6%(P<0.05) and 12.5%(P<0.05) respectively;all kinds of different chemical forms of copper improved the digestibility of crude ether extract(EE) of the diets.Copper did not affect the carcass composition of pigs,but adding 240mg/kg inorganic copper raised the liver weight significantly.At the same time,adding 50mg/kg copper casein proteinate and 240mg/kg inorganic copper in the diet increased the copper concentration of brain and bile by 28.8%(P<0.05) and 33.1%(P<0.05) respectively.

关 键 词：硫酸铜 蛋白铜 仔猪 生长性能 胴体组成 

分 类 号：S828.61[农业科学—畜牧学]