日粮赖氨酸水平对桂科商品猪生长性能、营养物质表观消化率及血清游离氨基酸的影响  

Influence of dietary lysine level on growth performance,nutrient apparent digestibility and serum free amino acid in Gui commercial pigs

作　　者：周俊华 周志扬 潘天彪 王崇洲 罗鲜青 王启芝 梁琪妹 黄丽霞 黄香 孙俊丽 何仁春 

机构地区：[1]广西畜牧研究所,广西南宁530001

出　　处：《粮食与饲料工业》2017年第10期57-59,62,共4页Cereal & Feed Industry

基　　金：广西公益性科研院所自选课题(桂牧研科2017-17)

摘　　要：为探讨不同赖氨酸水平日粮对(60~90)kg阶段桂科商品猪生长性能、营养物质表观消化率及血清游离氨基酸的影响,试验选用平均体重为(60±1.5)kg的桂科商品猪24头,随机分为4组(试验Ⅰ组、试验Ⅱ组、试验Ⅲ组、试验Ⅳ组),每组6头,分别饲喂赖氨酸水平为0.67%、0.72%、0.79%、0.86%的玉米-豆粕型日粮,预试期7d,试验期45d。结果表明,试验Ⅱ组(0.72%)日增重显著高于试验Ⅲ组(0.79%)、试验Ⅳ组(0.86%)(P<0.05),与试验Ⅰ组(0.67%)差异不显著(P>0.05);试验Ⅱ组(0.72%)料重比显著低于其他组(P<0.05);试验Ⅱ组(0.72%)粗蛋白质及无氮浸出物的表观消化率显著高于其他组(P<0.05);试验Ⅱ组(0.72%)血清游离赖氨酸水平显著高于试验Ⅰ组(0.67%)、试验Ⅳ组(0.86%)。日粮中0.72%的赖氨酸水平可促进(60~90)kg阶段桂科商品猪对营养物质的消化吸收,改善机体氨基酸平衡,进而提高猪只的生长性能。To explore the effect of different dietary lysine level on growth performance（60-90）kg phase in the Gui commercialpigs,nutrient apparent digestibilities and serum free amino acid,an average body weight of（60 ＋ 1.5）kg of 24 commercialpigs,were randomly divided into 4 groups（Experiment groupⅠ,Ⅱ,ⅢandⅣ,n=6）,which were fed a lysine level of 0.67%,0.72%,0.79%,0.86% of the corn/soybean meal diet.The pre-experimental period was 7 d,and the test lasted for 45 d.The results showed that the daily gain of experimental groupⅡ（0.72%）was significantly higher than that of experiment group Ⅲ（0.79%）and group Ⅳ（0.86%）（P〈0.05）,but there was no significant difference with that of groupⅠ（0.67%）（P〉0.05）;the feed weight ratio of experimental group Ⅱ（0.72%）was significantly lower than that of the other groups（P〈0.05）;the digestibility of crude protein and nitrogen free extract in group Ⅱ（0.72%）was significantly higher than that of the other groups（P〈0.05）;the serum free lysine level of groupⅡ（0.72%）was significantly higher than that of group Ⅰ（0.67%）and group Ⅳ（0.86%）.The level of lysine 0.72%in diets could promote the digestion and absorption of nutrients in the stage of（60-90）kg Gui pigs,and improve body amino acid balance,and the growth performance.

关 键 词：桂科商品猪 饲料 赖氨酸 生长性能 消化率 氨基酸 

分 类 号：S828.5[农业科学—畜牧学]