摘要
文章旨在研究饲粮含硫氨基酸水平对断奶仔猪生长性能、肠道形态及酶活性的影响。试验选择体重接近的28日龄断奶仔猪80头,称重后随机分为试验1、2、3、4组,各组饲粮中含硫氨基酸含量分别0.49%、0.64%、0.79%、0.94%,共进行21d。试验结果,仔猪平均日采食量(ADFI)随着饲粮中含硫氨基酸水平增加出现先增加后下降的趋势,料肉比(F/C)与之趋势相反,当含硫氨基酸含量为0.79%时(试验3组)生长性能最好。其中,试验2、3组仔猪平均日增重(ADG)较试验1组分别增加12.5%、15.9%(P<0.05),F/C较试验1组分别降低10.8%、12.4%(P<0.05)。饲粮中含硫氨基酸水平显著影响仔猪空肠形态,而对十二指肠、回肠形态无显著影响(P>0.05)。相比于试验1组,试验2、3、4组空肠绒毛高度(VH)分别增加8.6%、11.7%、9.1%(P<0.05),空肠隐窝深度(CD)分别下降22.6%、16.4%、12.7%(P<0.05),试验2、3组绒毛高度和隐窝深度比(V/C)较试验1组分别增加24.3%、17.4%(P<0.05)。除此之外,饲粮中含硫氨基酸显著影响仔猪空肠中碱性磷酸酶(ALP)活性(二次P<0.05)及麦芽糖酶活性(P<0.05)。综上所述,饲粮中含硫氨基酸水平显著影响断奶仔猪小肠发育及空肠内酶活性,改善生长。
The purpose of this study was to evaluate the effects of dietary sulfur amino acids on growth performance, intestinal devolopment of weaned piglets.80 piglets weaned at 28 days and with similar body weight were randomly divided into experiment 1,2,3 and 4.The contents of sulfur amino acids in diets of each group were 0.49%,0.64%,0.79% and 0.94%, treated for 21 days.Results:with the increase of the content of sulfur amino acids in the diet,the ADG of piglets showed a trend of increasing first and then decreasing,contrary to the trend of F/C.The ADG of group 2 and 3improve by 12.5% and 15.9% than group 1(P < 0.05),and the F/C decreased by 10.8% and 12.4%(P < 0.05).Dietary sulfuramino acids significantly affected the jejunum morphology of piglets.Compared with test group 1,VHof jejunal increased by 8.6%,11.7% and 9.1% respectively in group 2,3 and 4(P < 0.05),and CD lower by 22.6%,16.4% and 12.7%(P < 0.05),and V/C improve by 24.3% and 17.4% in group 2 and 3(P < 0.05).In addition,dietary sulfur amino acids significantly affected the ALP activity (QuadraticP < 0.05)and maltose enzyme activity(P < 0.05)in the jejunum.In a word,dietary SAA significantly affected intestinal development and improved growth performanceof weaned piglets.
作者
郭姣洁
苏玲
刘玲
GUO Jiaojie;SU Ling;LIU Ling(Shijiazhuang Vocational College of Technology & Information,Shijiazhuang,Hebei Province 050000,China)
出处
《中国饲料》
北大核心
2019年第16期64-67,共4页
China Feed
关键词
断奶仔猪
含硫氨基酸
生长性能
肠道形态
酶活性
piglets
sulfur amino acids
growth performance
intestinalmorphology
enzyme activity
