饲粮中添加不同水平维生素E对贵州黑山羊生长性能、免疫指标以及肉品质的影响  

Effects of Different Dietary Levels of Vitamin E on Growth Performance,Immune Indexes and Meat Quality of Guizhou Black Goats

作　　者：杨洋 王清峰 袁超 粟朝芝[1] 肖文 YANG Yang;WANG Qingfeng;YUAN Chao;SU Chaozhi;XIAO Wen(Institute of Animal Husbandry and Veterinary of Guizhou Province,Guizhou Guiyang 550001,China;Key Laboratory of Genetic Breeding and Reproduction of Plateau Mountain Animals,Ministry of Educa-tion,Guizhou University,Guizhou Guiyang 550025,China)

机构地区：[1]贵州省畜牧兽医研究所,贵州贵阳550001 [2]贵州大学高原山地动物遗传育种与繁殖教育部重点实验室,贵州贵阳550025

出　　处：《饲料工业》2024年第11期48-54,共7页Feed Industry

基　　金：贵州省科技计划项目[黔科合支撑〔2021〕一般112];贵州省科技计划项目[黔科合支撑〔2022〕重点033];贵州科技计划项目[黔科合服企〔2020〕4009(001)]。

摘　　要：试验旨在探究饲粮中添加不同水平维生素E对贵州黑山羊生长性能、免疫性能和肉品质的影响。选取生长状况良好、平均体重为(21.66±1.64)kg的贵州黑山羊44只,采用完全随机设计分为4组,分别为对照组、试验1组、试验2组和试验3组,每组11只,对照组和试验1、2、3组维生素E添加量分别为0、50、250、500 mg/(d·只),预试期7 d,正试期120 d,每天测定各组黑山羊的采食量,每隔30 d测定各组黑山羊的体重。试验结束后计算各组黑山羊的平均日采食量(ADFI)和平均日增重(ADG);采集各组黑山羊血液,测定血清免疫指标;每组随机选取3只黑山羊进行屠宰,测定肉质性状以及肌肉中氨基酸和脂肪酸的含量。结果表明:与对照组相比,试验2组的ADG提高了16.23%,免疫因子含量也有提高,其中IgA和IgG显著高于对照组(P<0.05);试验2组肌肉剪切力和滴水损失显著低于对照组(P<0.05),粗蛋白、多不饱和脂肪酸、油酸和亚油酸含量显著高于对照组(P<0.05)。综上所述,饲粮中维生素E添加量为250 mg/(d·只)时提升贵州黑山羊生长性能、免疫性能以及改善肉质指标的效果较好。This experiment was conducted to investigate the effects of adding different levels of vitamin E to the diet on the growth performance,immune function,and meat quality of Guizhou black goats.Forty four Guizhou black goats with an average body weight of(21.66±1.64)kg were selected for the experiment.They were divided into 4 groups with 11 goats in each group.The vitamin E supplementation levels for control group,group 1,group 2,and group 3 were 0,50,250 mg/(kid·d)and 500 mg/(kid·d),respectively.The pre-trial period was 7 days,and the formal period was 120 days.The feed intake of black goats in each group was measured every day,and the weight of black goats in each group was measured every 30 days.After the experiment,the average daily feed intake(ADFI)and average daily gain(ADG)of black goats in each group were calculated.At the same time,the blood of black goats in each group was collected to determine the serum immune indexes,and 3 black goats were randomly selected for slaughter.The content of amino acid and fatty acid in muscle were determined.The results showed that compared with the control group,the ADG of group 2 was increased by 16.23%,and the contents of immune factors were also higher,among which IgA and IgG were significantly higher than those of the control group(P<0.05);the muscle shear force and drip loss of group 2 were significantly lower than those of the control group(P<0.05),and the contents of crude protein,polyunsaturated fatty acids,oleic acid and linoleic acid were significantly higher than those of the control group(P<0.05).In conclusion,adding 250 mg/(kid·d)of vitamin E has the best effect on improving the growth performance,immune function,and meat quality of Guizhou black goats.

关 键 词：维生素E 贵州黑山羊 生长性能 免疫指标 氨基酸 脂肪酸 

分 类 号：S816.7[农业科学—饲料科学]