饲粮中添加酵母硒和二羟基丙酮对山羊生长性能、营养物质表观消化率、屠宰性能、肉品质及血清生化、抗氧化指标的影响  

Performance,Slaughter Performance,Meat Quality and Serum Biochemical and Antioxidant Indices of Goats

作　　者：和浩生 李世强 蒋姣平 方热军[1] HE Haosheng;LI Shiqiang;JIANG Jiaoping;FANG Rejun(Hunan Engineering Research Center of Smart Husbandry,College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128,China;Hunan Province Anhua County Animal Husbandry and Aquatic Affairs Center,Anhua 413500,China;Hunan Province Anhua County Benxin Goat Farm,Anhua 413500,China)

机构地区：[1]湖南农业大学动物科学技术学院,智慧牧业湖南省工程研究中心,长沙410128 [2]湖南安化县畜牧水产事务中心,安化413500 [3]湖南省安化县犇鑫山羊养殖场,安化413500

出　　处：《动物营养学报》2024年第6期3797-3810,共14页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家重点研发计划课题(2022YFD1300404);湖南省草食动物产业技术体系饲料与营养岗位(湘农发[2019]105号)。

摘　　要：本试验旨在研究饲粮中添加酵母硒和二羟基丙酮对山羊生长性能、营养物质表观消化率、屠宰性能、肉品质及血清生化、抗氧化指标的影响。选取6月龄健康、雄性川中黑山羊96只,平均体重(24.83±1.50)kg,随机分为4组,每组4个重复,每个重复6只羊。对照组(CON组)饲喂基础饲粮,试验组分别在基础饲粮中添加0.3 mg/kg的酵母硒(SY组)、25 mg/kg的二羟基丙酮(DHA组)及0.3 mg/kg的酵母硒+25 mg/kg的二羟基丙酮(SY-DHA组)。预试期10 d,正试期60 d。结果表明:1)与CON组相比,SY组和SY-DHA组的平均日增重(ADG)和平均日采食量(ADFI)显著提高(P<0.05),料重比(F/G)显著降低(P<0.05)。2)与CON组相比,SY组和SY-DHA组的干物质、粗蛋白质和中性洗涤纤维表观消化率显著提高(P<0.05)。3)各组之间屠宰性能和器官指数均无显著差异(P>0.05)。4)与CON组相比,SY组和SY-DHA组的背最长肌和股二头肌红度值、pH 45 min显著提高(P<0.05),且SY-DHA组的股二头肌红度值显著高于SY组(P<0.05)。与CON组相比,SY组、DHA组和SY-DHA组的背最长肌滴水损失和股二头肌pH 24h显著降低(P<0.05)。5)与CON相比,SY组、DHA组和SY-DHA组的血清总蛋白(TP)含量显著提高(P<0.05),血清碱性磷酸酶(ALP)活性显著降低(P<0.05);DHA组和SY-DHA组的血清球蛋白(GLB)、高密度脂蛋白(HDL)含量显著提高(P<0.05),SY-DHA组的血清白蛋白(ALB)、总胆固醇(TC)含量显著提高(P<0.05)。6)与CON相比,SY组、DHA组和SY-DHA组的血清总抗氧化能力(T-AOC)显著提高(P<0.05),血清丙二醛(MDA)含量显著降低(P<0.05);SY组和SY-DHA组的血清谷胱甘肽过氧化物酶(GSH-Px)、超氧化物歧化酶(SOD)活性显著提高(P<0.05)。综上所述,饲粮中添加酵母硒可以提高山羊生长性能和营养物质表观消化率;饲粮中添加酵母硒或二羟基丙酮均可以改善山羊肉品质,提高血清TP含量,改善脂质代谢,提高抗氧化能力,酵母硒和二羟基丙酮联合添加效果更优This experiment was conducted to study the effects of dietary selenium yeast and dihydroxyacetone on growth performance,slaughter performance,meat quality and serum biochemical and antioxidant indices of goats.Ninety-six 6-month-old healthy male Chuanzhong black goats with an average body weight of(24.83±1.50)kg were selected and randomly divided into 4 groups with 4 replicates per group and 6 goats per replicate.Goats in the control group(CON group)were fed a basal diet,and others in experimental groups were fed the basal diets supplemented with 0.3 mg/kg selenium yeast(SY group),25 mg/kg dihydroxyacetone(DHA group)and 0.3 mg/kg selenium yeast+5 mg/kg dihydroxyacetone(SY-DHA group),respectively.The pre-experimental period lasted for 10 days,and the experimental period lasted for 60 days.The results showed as follows:1)compared with CON group,the average daily gain(ADG)and average daily feed intake(ADFI)of SY and SY-DHA groups were significantly increased(P<0.05),and the feed to gain ratio(F/G)was significantly decreased(P<0.05).2)Compared with CON group,the dry matter,crude protein and neutral detergent fiber apparent digestibilities of SY and SY-DHA groups were significantly increased(P<0.05).3)There were no significant differences in slaughtering performance and organ indices among all groups(P>0.05).4)Compared with CON group,the redness value and pH 45 min in longissimus dorsi and biceps femoris of SY and SY-DHA groups were significantly increased(P<0.05),and the redness value in biceps femoris of SY-DHA group was significantly higher than that of SY group(P<0.05).Compared with CON group,the drip loss in longissimus dorsi and pH 24 h in biceps femoris of SY,DHA and SY-DHA groups were significantly decreased(P<0.05).5)Compared with CON group,the serum total protein(TP)content of SY,DHA and SY-DHA groups was significantly increased(P<0.05),and the serum alkaline phosphatase(ALP)activity was significantly decreased(P<0.05);the contents of globulin(GLB)and high-density lipoprotein(HDL)in serum of DHA and SY-DHA

关 键 词：酵母硒 二羟基丙酮 山羊 生长性能 营养物质表观消化率 肉品质 抗氧化 

分 类 号：S826[农业科学—畜牧学]