豆粕减量替代日粮对育肥小尾寒羊生长性能、肉用性能及经济效益的影响  

The Effect of Reducing Soybean Meal as a Substitute for Diet on The Growth Performance,Meat Performance,and Economic Benefits of Fattening Small Tailed Han Sheep

作　　者：范敬常 楚惠民 FAN Jingchang;CHU Huimin(Jiaxiang County Sheep Farm,Shandong Jining 272400,China;Jining Academy of Agricultural Sciences,Shandong Jining 272100,China)

机构地区：[1]嘉祥县种羊场,山东济宁272400 [2]济宁市农业科学研究院,山东济宁272100

出　　处：《饲料工业》2024年第13期70-76,共7页Feed Industry

基　　金：山东省农业良种工程项目[2021LZGC010-04];山东省羊产业技术体系项目[SDAIT-10-12]。

摘　　要：试验旨在研究豆粕减量替代日粮对育肥小尾寒羊生长性能、肉用性能及经济效益的影响。试验选择75只体重(41.64±1.19) kg相近的180 d左右小尾寒羊育成公羊,随机分成对照组和试验Ⅰ、Ⅱ、Ⅲ、Ⅳ组,其中对照组粗饲料全部为揉丝豆秸,试验组日粮中豆粕减量、粗饲料为不同比例的花生秧代替豆秸,全程保持日粮精粗比60∶40不变、各组日粮的消化能和蛋白质水平相近。试验开始和结束时测定小尾寒羊空腹体重和体尺指标,试验结束测定肉用性能指标,计算经济效益。结果表明:(1)与对照组比较,试验各组平均日增重显著提高(P<0.01),以试验Ⅰ组、试验Ⅱ组、试验Ⅲ组的增重效果较好,而各组的体尺指标无显著差异(P>0.05);(2)与对照组比较,试验各组背脂厚和GR值均显著提高(P<0.05),屠宰率、净肉率、眼肌面积无显著差异(P>0.05);(3)与试验各组相比,对照组羊肉的滴水损失和黄度值最大,均显著高于试验各组(P<0.05);(4)试验各组的经济效益均极显著高于对照组(P<0.01)。说明豆粕减量替代日粮对育肥小尾寒羊生长性能、肉用性能和经济效益均有不同程度的影响,以试验Ⅰ、Ⅱ、Ⅲ组的效果较好,经济效益较高。The aim of this experiment is to investigate the effects of reducing soybean meal as a substitute for diet on the growth performance,meat performance,and economic benefits of fattening small tailed Han sheep.75 small tailed Han sheep with similar body weight of(41.64±1.19) kg and about 180 days were selected for the experiment and bred into male sheep.They were randomly divided into a control group,experimental group Ⅰ,experimental group Ⅱ,experimental group Ⅲ,and experimental group Ⅳ.The crude feed in the control group's diet was made entirely of rolled silk soybean straw,while the experimental group's diet was reduced in soybean meal.Different proportions of peanut seedlings were used as the crude feed instead of soybean straw.The fine to coarse ratio(60:40) of the diet remained unchanged throughout the experiment,and the digestible energy and protein levels of diet of each group were similar.Fasting body weight and body size were measured at the beginning and end of the experiment,meat performance was measured at the end of the experiment,and economic benefits were calculated.The results showed that:(1) compared with the control group,the average daily weight gain of each experimental group was significantly increased(P<0.01),with the best weight gain effects observed in experimental group Ⅰ,experimental group Ⅱ,and experimental group Ⅲ,while there was no significant difference in body size indicators among the groups(P>0.05).(2) Compared with the control group,the experimental groups showed a significant increase in back fat thickness and GR value(P<0.05),while there was no significant difference in slaughter rate,net meat rate,and eye muscle area between the experimental groups and the control group(P>0.05).(3) Compared with the experimental groups,the control group had the highest dripping loss and yellowing value of lamb,both significantly higher than the experimental groups(P<0.05).(4) The economic benefits of each experimental group were significantly higher than those of the control group

关 键 词：豆粕减量替代 育肥小尾寒羊 生长性能 肉用性能 经济效益 

分 类 号：S816.32[农业科学—饲料科学]