青贮组合型全混合日粮对育肥肉牛生长性能及血液指标的影响  

Effects of Silage Combination Type Total Mixed Ration on Growth Performance and Blood Parameters of Fattening Beef Cattle

作　　者：张霞[1] 王维中 王虎成[1] 郭旭生[3] ZHANG Xia;WANG Weizhong;WANG Hucheng;GUO Xusheng(State Key Laboratory of Grassland Agro-Ecosystems,Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China;Dingxi City Livestock Husbandry Promotion Station,Dingxi 743000,China;College of Life Science,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学草地农业生态系统国家重点实验室,兰州大学农业部草牧业创新重点实验室,兰州大学草地农业科技学院,兰州730020 [2]定西市畜牧技术推广站,定西743000 [3]兰州大学生命科学学院,兰州730000

出　　处：《动物营养学报》2018年第12期4980-4990,共11页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：定西市科技计划"优质牧草高效育肥牛关键技术研发"(071100032);国家重点研发计划政府间国际科技创新合作重点专项(2017YFE0104300)。

摘　　要：本试验旨在研究青贮组合型全混合日粮对育肥肉牛生长性能及血液指标的影响。选取体况良好、体重[(440.5±3.5) kg]相近的西门塔尔公牛30头,随机分为2组,每组15头牛。对照组(C组)饲喂单一青贮型全混合日粮,试验组(T组)饲喂青贮组合型全混合日粮。试验期180 d。结果表明:1)第1～60天、第61～120天和第121～180天,T组的平均日采食量均显著低于C组(P≤0.05),T组的平均日增重均高于C组(P>0.05);第61～120天和第121～180天,T组的料重比均显著低于C组(P <0. 05)。2)第120天和第180天,C组的血液红细胞数目(RBC)和血红蛋白浓度(HGB)显著高于T组(P≤0.05);第180天,C组的血液红细胞压积(HCT)和红细胞分布宽度标准差(RDW-SD)显著高于T组(P<0.05)。3) 2组间血浆抗氧化指标均无显著差异(P>0.05)。4)第60天、第120天,C组的血浆尿素氮(UN)含量显著低于T组(P<0.05);第60天,C组的血浆总胆固醇(T-CHO)含量显著低于T组(P<0.05);第120天、第180天,C组的血浆谷草转氨酶(AST)活性显著高于T组(P≤0. 05);第180天,C组的血浆谷丙转氨酶(ALT)活性显著高于T组(P<0.05)。综上,青贮组合型全混合日粮对育肥肉牛机体抗氧化功能和健康状况无不良影响,而且可在一定程度上改善机体代谢,并可提高育肥肉牛的生长性能。The aim of this study was to investigate the effects of silage combination type total mixed ration on growth performance and blood parameters of fattening beef cattle.Thirty Simmental bulls with good body condition and similar body weight[(440.5±3.5)kg]were selected and randomly divided into two groups with fifteen cattle per group.Cattle in the control group(C group)were fed a single silage type total mixed ration,and the others in the test group(T group)were fed a silage combination type total mixed ration.The trial lasted for 180 days.The results showed as follows:1)during days 1 to 60,days 61 to 120 and days 121 to 180,the average daily feed intake of T group was significantly lower than that of C group(P≤0.05),the average daily gain of T group was higher than that of C group(P >0.05);during days 61 to 120 and days 121 to 180,the feed to gain ratio of T group was significantly lower than that of C group(P<0.05).2)On day 120 and day 180,the red blood cell number(RBC)and hemoglobin concentration(HGB)in blood of C group were significantly higher than those of T group(P≤0.05);on day 180,the hematocrit(HCT)and standard deviation of red blood cell distribution(RDW-SD)in blood of C group were significantly higher than those of T group(P<0.05).3)There were no significant differences in plasma antioxidant parameters between two groups(P >0.05).4)On day 60 and day 120,the plasma urea nitrogen(UN)content of C group was significantly lower than that of T group(P<0.05);on day 60,the plasma total cholesterol(T-CHO)content of C group was significantly lower than that of T group(P<0.05);on day 120 and day 180,the plasma glutamic-oxalacetic transaminase(AST)activity of C group was significantly higher than that of T group(P≤0.05);on day 180,the plasma glutamic pyruvic transaminase(ALT)activity of C group was significantly higher than that of T group(P<0.05).In conclusion,the silage combination type total mixed ration have no adverse effects on the antioxidant function and health condition of fattening beef cattle,can i

关 键 词：青贮 全混合日粮 肉牛 生长性能 血液指标 

分 类 号：S823[农业科学—畜牧学]