饲粮中添加不同比例全株饲料桑对川白獭兔生长性能、屠宰性能、肉品质、血清抗氧化指标及养分表观消化率的影响  

Effects of Different Dietary Whole Plant Forage Mulberry Addition Ratios on Growth Performance,Slaughter Performance,Meat Quality,Serum Antioxidant Indices and Nutrient Apparent Digestibility of Chuanbai Rex Rabbits

作　　者：王红林 傅祥超[3] 左艳春[1,2] 张凯[3] 吴子周 严旭[1,2] 肖蔹 陈慧 寇晶[1,2] 文斌[3] 杜周和[1,2] WANG Honglin;FU Xiangchao;ZUO Yanchun;ZHANG Kai;WU Zizhou;YAN Xu;XIAO Lian;CHEN Hui;KOU Jing;WEN Bin;DU Zhouhe(Forage Crops Germplasm Enhancement and Production Management Key Laboratory of Nanchong City,Sericulture Research Institute,Sichuan Academy of Agricultural Sciences,Nanchong 637000,China;Institute of Special Economic Animals and Plants,Sichuan Academy of Agricultural Sciences,Nanchong 637000,China;Sichuan Academy of Grassland Science,Chengdu 611430,China;Nanchong Bureau of Agricultural and Rural Affairs,Nanchong 637000,China)

机构地区：[1]四川省农业科学院蚕业研究所,饲用作物种质创新与利用南充市重点实验室,南充637000 [2]四川省农业科学院特种经济动植物研究所,南充637000 [3]四川省草原科学研究院,成都611430 [4]南充市农业农村局,南充637000

出　　处：《动物营养学报》2024年第11期7250-7261,共12页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：四川省财政自主创新专项(2022ZZCX086);南充市应用基础研究项目(22YYJCYJ0010);南充市推进乡村振兴项目(23XCZX0025);四川省农业科学院“1+9”揭榜挂帅科技攻关(1+9KJGG004);四川省“十四五”育种攻关(2021YFYZ0024-2);四川省农业科学院青年科研骨干培养计划项目。

摘　　要：本试验旨在研究饲粮中添加不同比例全株饲料桑对川白獭兔生长性能、屠宰性能、肉品质、血清抗氧化指标及养分表观消化率的影响,以确定饲料桑作为非常规饲料纤维源在川白獭兔饲粮中的适宜添加比例。试验选取35日龄、健康状况良好、体重相近以及遗传背景相似的川白獭兔150只(公母各占1/2),随机分为5组,每组30个重复,每个重复1只。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加6%、12%、18%和24%饲料桑。预试期7 d,正试期32 d。结果表明:1)饲粮中添加不同比例全株饲料桑对川白獭兔终末体重和平均日增重均无显著影响(P>0.05)。与对照组相比,各试验组平均日采食量均显著降低(P<0.05),但各试验组间无显著差异(P>0.05);6%和24%添加组料重比显著降低(P<0.05)。2)川白獭兔全净膛率和半净膛率随着饲料桑添加比例的提高呈现先降低后升高的变化趋势。与对照组相比,各试验组全净膛率和半净膛率均无显著差异(P>0.05),但24%添加组全净膛率和半净膛率显著高于18%添加组(P<0.05)。与对照组相比,12%添加组脾脏指数显著提高(P<0.05);12%组心脏指数显著高于6%添加组(P<0.05)。3)饲粮中添加不同比例全株饲料桑对川白獭兔肌肉滴水损失率和熟肉率均无显著影响(P>0.05),但能显著提高肌肉粗蛋白质含量(P<0.05),显著降低肌肉粗脂肪含量(P<0.05)。4)与对照组相比,24%添加组川白獭兔血清总抗氧化能力显著提高(P<0.05),各试验组血清过氧化氢酶活性显著提高(P<0.05),12%、18%和24%添加组血清总胆汁酸含量显著降低(P<0.05)。5)各养分表观消化率随着饲料桑添加比例的提高总体呈现先升高后降低的变化趋势。与对照组相比,12%添加组干物质、粗蛋白质、中性洗涤纤维、酸性洗涤纤维、粗脂肪和粗灰分表观消化率均显著提高(P<0.05)。综上所述,饲粮中添加不同比例全株饲料桑对川白獭兔生长�This experiment was conducted to investigate the effects of different dietary whole plant forage mulberry addition ratios on growth performance,slaughter performance,meat quality,serum antioxidant indices and nutrient apparent digestibility of Chuanbai Rex rabbits,and to determine the appropriate addition ratio of forage mulberry as a non-conventional feed fiber source in the diet for Chuanbai Rex rabbits.A total of 150 Chuanbai Rex rabbits of 35-day-old with good health,similar body weight and similar genetic background(half male and half female)were randomly divided into 5 groups with 30 replicates per group and 1 rabbit per replicate.Rabbits in the control group were fed a basal diet,and those in the experimental groups were fed the basal diet supplemented with 6%,12%,18% and 24% forage mulberry,respectively.The pre-trial period lasted for 7 days and the experimental period lasted for 32 days.The results showed as follows:1)different dietary ratios of whole plant forage mulberry had no significant effects on the final body weight and average daily gain of Chuanbai Rex rabbits(P>0.05).Compared with the control group,the average daily feed intake in experimental groups was significantly decreased(P<0.05),but there was no significant difference among experimental groups(P>0.05);the ratio of feed to gain in 6% and 24% addition groups was significantly decreased(P<0.05).2)The eviscerated ratio and semi-eviscerated ratio of Chuanbai Rex rabbits showed a trend of decreasing first and then increasing with the increase of forage mulberry addition ratio.Compared with the control group,there were no significant differences in the eviscerated ratio and semi-eviscerated ratio in experimental groups(P>0.05),but the eviscerated ratio and semi-eviscerated ratio in 24% addition group were significantly higher than those in 18% addition group(P<0.05).Compared with the control group,the spleen index in 12% addition group was significantly increased(P<0.05);the heart index in 12% addition group was significantly higher than that

关 键 词：全株饲料桑 川白獭兔 生长性能 屠宰性能 肉品质 抗氧化能力 养分表观消化率 

分 类 号：S816[农业科学—饲料科学]