苜蓿加工粉尘对育肥猪生长性能、胴体性状、肉品质及经济效益的影响  

Effects of Alfalfa Processing Dust on Growth Performance,Carcass Traits,Meat Quality and Economic Efficiency of Fattening Pigs

作　　者：张森[1] 李成旭 王鹏飞[1] 闫尊强 马艳萍[3] 滚双宝[1,4] ZHANG Sen;LI Chengxu;WANG Pengfei;YAN Zunqiang;MA Yanping;GUN Shuangbao(College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China;Animal Health Inspection of Yongdeng County,Lanzhou 730300,China;Gansu Agricultural University Library,Lanzhou 730070,China;Gansu Research Center for Swine Production Engineering and Technology,Lanzhou 730070,China)

机构地区：[1]甘肃农业大学动物科学技术学院,兰州730070 [2]永登县动物卫生监督所,兰州730300 [3]甘肃农业大学图书馆,兰州730070 [4]甘肃现代养猪工程技术研究中心,兰州730070

出　　处：《动物营养学报》2023年第5期2859-2866,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：甘肃省科技创新项目(GSSYLXM-02)。

摘　　要：本试验旨在研究饲粮中添加苜蓿加工粉尘对育肥猪生长性能、胴体性状、肉品质及经济效益的影响,探讨其在育肥猪上的应用效果。选取平均体重为(30.32±1.46)kg的“杜×长×大”三元杂交猪48头,按性别、体重基本一致的原则随机分为4组,每组3个重复,每个重复4头。对照组饲喂基础饲粮,试验组饲喂在基础饲粮中分别添加2%、4%、6%苜蓿加工粉尘的饲粮。试验期82 d,分为育肥前期(1~41 d)和育肥后期(42~82 d)2个阶段。结果表明:1)与对照组相比,2%苜蓿加工粉尘组育肥后期和育肥全期平均日增重(ADG)、平均日采食量(ADFI)和料重比(F/G)差异不显著(P>0.05),育肥前期ADFI显著降低了10.13%(P<0.05),育肥前期ADG和F/G分别降低了6.85%和3.53%(P>0.05);4%、6%苜蓿加工粉尘组育肥前期、育肥后期和育肥全期ADG、ADFI和F/G差异不显著(P>0.05)。2)与对照组相比,2%、4%、6%苜蓿加工粉尘组瘦肉率分别增加了0.60%、1.50%和2.45%(P>0.05);各组之间宰前活重、胴体重、屠宰率、眼肌面积、胴体直长、胴体斜长、骨率、皮率、肥肉率均无显著差异(P>0.05)。3)各组之间肌肉大理石纹评分、失水率、剪切力、亮度值、红度值、黄度值、熟肉率均无显著差异(P>0.05)。4)与对照组相比,育肥前期,2%、4%苜蓿加工粉尘组饲料增重成本分别降低了0.48、0.65元/kg(P>0.05),6%苜蓿加工粉尘组显著降低了0.83元/kg(P<0.05);育肥后期,2%、4%、6%苜蓿加工粉尘组饲料增重成本分别降低了0.03、0.02、0.37元/kg(P>0.05);育肥全期,2%、4%、6%苜蓿加工粉尘组饲料增重成本分别降低了0.18、0.36、0.57元/kg(P>0.05)。综上可知,饲粮中添加2%~6%苜蓿加工粉尘对育肥猪生长性能、胴体性状、肉品质无负面影响,同时还可提高胴体瘦肉率,其中饲粮中添加6%苜蓿加工粉尘可最大程度降低饲料成本。The aim of this study was to investigate the effects of dietary alfalfa processing dust on the growth performance,carcass traits,meat quality and economic efficiency of fattening pigs,and to explore its application effect on fattening pigs.Forty-eight“Duroc×Landrace×Yorkshire”ternary crossbred pigs with an average weight of(30.32±1.46)kg were selected and randomly divided into four groups with three replicates per group and four pigs per replicate according to the principle of gender and weight consistency.The control group was fed a basal diet,and the experimental groups were fed basal diets supplemental with 2%,4%and 6%alfalfa processed dust,respectively.The trial period was 82 d,which divided into two stages:early fattening stage(1 to 41 d)and late fattening stage(42 to 82 d).The results showed as follows:1)compared with the control group,the average daily gain(ADG),average daily feed intake(ADFI)and feed to gain ratio(F/G)in late fattening stage and while fattening stage of 2%alfalfa processed dust group were no significant difference(P>0.05),the ADFI in early fattening stage was significantly decreased by 10.13%(P<0.05),and the ADG and F/G in early fattening stage were decreased by 6.85%and 3.53%(P>0.05);the ADG,ADFI and F/G in early fattening stage,late fattening stage and whole fattening stage of 4%and 6%alfalfa processed dust groups were no significant difference(P>0.05).2)Compared with the control group,the lean meat percentage of 2%,4%and 6%alfalfa processed dust groups was increased by 0.60%,1.50%and 2.45%(P>0.05);there were no significant differences in live weight before slaughter,carcass weight,dressing percentage,eye muscle area,carcass straight length,carcass oblique length,bone percentage,skin percentage and fat meat percentage among all groups(P>0.05).3)There were no significant differences in marbling score,water lose percentage,shear force,brightness value,redness value,yellowness value,cooked meat percentage among all groups(P>0.05).4)Compared with the control group,in early fattening

关 键 词：苜蓿加工粉尘 育肥猪 非常规饲料 生长性能 胴体性状 肉品质 

分 类 号：S828[农业科学—畜牧学]