3.8～8kg断奶仔猪可消化赖氨酸需要量的研究  

LYSINE REQUIREMENT OF 3.8～8kg EARLY-WEANED PIGLETS

作　　者：林映才[1] 蒋宗勇[1] 肖静英[1] 郑黎[1] 余德谦[1] 张振斌[1] 

机构地区：[1]广东省农业科学院畜牧研究所,广东广州510640

出　　处：《动物营养学报》2001年第1期14-18,共5页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：广东省自然科学基金重点资助项目!(项目编号963007);国家"九五"科技攻关资助项目!(项目编号96-003-04-09-02)

摘　　要：试验采用60头14日龄的三元杂交[杜×(大×长)]断奶仔猪 ,研究饲粮不同赖氨酸水平(Lys,1.05 %、1.15 %、1.25 %、1.35 %、1.45 %、1.55 %)对3.8～8kg 断奶仔猪的生产性能和血清尿素氮浓度的影响。结果表明 ,随饲粮赖氨酸水平升高 ,仔猪平均日增重极显著提高(P<0.01)、采食量显著提高(P<0.05)、料重比降低(P>0.05)、血清尿素氮浓度显著降低(P<0.05) ,但Lys1.45 %组和1.55 %组仔猪生产性能很相近(P>0.05)。以上结果表明 ,满足3.8～8kg 超早期断奶仔猪生长的总赖氨酸需要量为1.45 %。以回—直肠吻合术猪测定基础饲粮各种饲料的赖氨酸的回肠消化率 ,计算出表观可消化和真可消化赖氨酸需要量分别为1.30 %和1.38 %。Sixty three-line crossbred(Duroc ×(Landrace×Yorkshire)),early-weaned piglets(initial BW=3.8kg;initial age=14days)were used to evaluate the effects of different dietary lysine levels(1.05%,1.15%,1.25%,1.35%,1.45% and 1.55%)on performance and serum urea nitrogen(SUN)concentration.The results showed that daily gain and feed intake increased significantly(P<0.01 or 0.05),feed to gain ratio trended to decrease(P>0.05),SUN concentration decreased significantly(P<0.05) as dietary lysine level increased.But the performances between the piglets offered 1.45% and 1.55% lysine diets were very similar(P>0.05).It was concluded that dietary total lysine requirement of 3.8～8kg early-weaned piglets was 1.45%,true or apparent ileum digestible lysine requirements were 1.38% or 1.30%,respectively.

关 键 词：断奶仔猪 赖氨酸 回肠消化率 需要量 生产性能 

分 类 号：S828.45[农业科学—畜牧学] S828.41[农业科学—畜牧兽医]