土豆渣发酵饲料对小尾寒羊氨基酸及脂肪酸组成的影响  

Effect of the potato dregs fermentation feed on the amino acid and fatty acid composition of small tail han sheep

作　　者：薛树媛 王莉梅 李长青 郭天龙 田丰 金海 Xue Shuyuan;Wang Limei;Li Changqing;Guo Tianlong;Tian Feng;Jin Hai

机构地区：[1]内蒙古自治区农牧业科学院

出　　处：《饲料工业》2019年第11期43-48,共6页Feed Industry

基　　金：绵羊高效安全养殖技术应用与示范[2018YFD0502100];公益性行业(农业)科研专项经费项目[20120304206]

摘　　要：试验旨在探讨土豆渣与劣质牧草混合发酵饲料饲喂对小尾寒羊氨基酸及脂肪酸组成的影响。选择150只健康无病、体重相近(22 kg左右)的小尾寒羊羔羊,随机分成3组,每组5个重复,每个重复10只。对照组常规饲喂(精料+羊草),试验Ⅰ组和试验Ⅱ组精料基础上饲喂不同配方的土豆渣发酵饲料。3组精料饲喂量均为500g/d,粗饲料自由采食。预试期7d,试验期65d。饲喂试验结束后进行屠宰采取背最长肌和肾周脂肪用于氨基酸和脂肪酸分析。结果表明:试验Ⅰ组相比对照组显著提高了缬氨酸、异亮氨酸、亮氨酸和成人必需氨基酸的含量(P<0.05),试验Ⅰ组和试验Ⅱ组相比对照组显著提高了苯丙氨酸和婴儿必需氨基酸的含量(P<0.05);试验Ⅰ组肌肉脂肪酸中二十一碳烷酸显著高于对照组(P<0.05),试验Ⅰ组肾周脂肪酸中硬脂酸显著低于对照组(P<0.05)。土豆渣与劣质牧草混合发酵饲料饲喂小尾寒羊可提高肌肉中氨基酸的含量,羊肉营养丰富。脂肪酸而言,饲喂发酵饲料并未改变肌肉和肾周脂肪中的脂肪酸组成,试验组间比较,试验Ⅰ组略优于试验Ⅱ组。This experiment was conducted to study the effect of the fermentation feed on amino acids and fatty acids compositions of small tail han sheep.150 sheep with an average body weight of about 22kg were randomly divided into three groups:control group,group Ⅰ and group Ⅱ.Each treatment had 5 replicates and 10 sheep per replicate.The control group was fed a based diet,group Ⅰ,Ⅱ were fed the different fermentation feeds on the basis of concentrate.The pre-experimental period lasted for 7 d,the experiment period lasted for 65 d.Slaughter was done at the end of feeding experiment,and the longissimus dorsi muscle and kidney fat were used to analyze amino acids and fatty acids.The results showed that:aline,isoleucine,leucine,adult essential amino acids of groupⅠand Pheny lalanine,baby essential amino acids of group Ⅰ,Ⅱ were significant higher than control group(P<0.05).C21:0 of muscle fatty acids and C18:0 of kidney fatty acids had significant difference between group Ⅰ and control group(P<0.05),another detection indexes had no significant difference among three groups(P>0.05).In conclusion,feeding the fermentation feed can increase the amino acids,improve the mutton nutrition,but did not change the composition of fatty acids in the muscle and kidney adipose tissue.Compared between experimental groups,group Ⅰ was slightly better than group Ⅱ.

关 键 词：土豆渣 发酵饲料 小尾寒羊 氨基酸 脂肪酸 

分 类 号：S816.6[农业科学—饲料科学]