半胱胺和小肽对断奶仔猪生产性能、养分表观消化率和血清激素水平的影响  

Effect of dietary cysteamine and small peptides on performance,nutrient apparent digestibility and serum hormone levels of weaned piglets

作　　者：孙占田[1] 郭新珍[1] 胡新旭 孙海源 王斌[1] 

机构地区：[1]河北工程大学农学院,河北邯郸056021 [2]湖南微生物研究所,湖南长沙410009

出　　处：《饲料工业》2013年第22期5-8,共4页Feed Industry

基　　金：河北省科技厅科学技术发展计划项目[12220406D]

摘　　要：试验旨在研究日粮中单独添加小肽和半胱胺或复合添加替代抗生素对断奶仔猪生产性能、养分表观消化率以及血液激素指标的影响。试验选取96头21日龄断奶、体重相近的"杜×长×大"三元断奶仔猪,随机分为4个处理组,每组设3个重复,每个重复栏8头猪(公、母各半)。对照组(A组)饲喂基础日粮+抗生素(抗敌素100 mg/kg+杆菌肽锌50 mg/kg);B组添加3%小肽的日粮,日粮营养水平和基础日粮一致;C组为基础日粮+120 mg/kg半胱胺;D组为B组日粮+半胱胺120 mg/kg。结果表明,与抗生素对照组(A组)相比,日粮中分别添加半胱胺和小肽,可一定程度上提高断奶仔猪生产性能,改善日增重和采食量。二者同时使用,日增重和采食量都有显著增加,日粮粗蛋白表观消化率显著提高(P<0.05),料重比也有一定程度的下降,腹泻也有减少。添加半胱胺或半胱胺和小肽同时添加,可显著提高血清中GH、T3和T4水平,降低血清生长抑素和胰岛素水平(P<0.05)。试验表明,半胱胺和小肽或二者复合添加可替代抗生素用于断奶仔猪饲料中,达到促生长的效果。The trial was to study the effects of eysteamiue （CS） nr/and small peptides （SP） substitution for aantibiotics on performanee, nutrient apparenl digestibility and serum hormone levels of weanling piglets. Ninety six newborn Duroe×Landrace×Yorkshire crossbred health piglets weaned at the age of 21 d were randomly divided into four groups with three reeplieates in each group and eight piglets in each replicate（four gills and four barrows）. The piglets in Control group （A）, Group B , Group C and Group D were fed with the basal diet＋antibiotic （colistin 100 mg/kg＋zinc bacitracin 50 mg/kg）, basal diet ＋3oh small peptides （same nulrition levels as basic diet） , basal diet＋120 mg/kg CS, B group diet＋120 mg/kg CS respectively. The results showed that the diels supplemented wilh CS or SP could improve the peril）nuance and had a trend of increasing average body weight gain and average feed iulake in the weaned pigs to some extenl（P〉0.05）. CS and SP added simultaneously could signifieanlly improve average daily gain, average feed inlake and apparent digestibility of crude protein（P〈0.05）. CS or CS and SP addition significantly improved GH, T3 and T4 levels, redduced SS and insulin levels in the serum（P〈 0.05）. CS or addition of CS and SP could substitule for antibiotic in weaned piglets, and achieve the growth promoting effects.

关 键 词：断奶仔猪 小肽 半胱胺 抗生素 

分 类 号：S816.7[农业科学—饲料科学]