日粮不同精粗比对肉牛生长性能和血液生化指标的影响  

Effects of Different Dietary Concentrate to Forage Ratios on Production Performance and Blood Biochemical Indices of Beef Cattle

作　　者：陈艳美 史建伟 杨凯[1] 高月娥[1] 陈瑾 程月 王安奎[1] 黄必志[1] CHEN Yanmei;SHI Jianwei;YANG Kai;GAO Yue'e;CHEN Jin;CHENG Yue;WANG Ankui;HUANG Bizhi(Yunnan Academy of Grassland and Animal Science,Yunnan Kunming 650212,China;Xishan District Agricultural Technology Extension Service Center,Yunnan Kunming 650199,China;Yunnan Vocational College of Agriculture,Yunnan Kunming 650031,China)

机构地区：[1]云南省草地动物科学研究院,云南昆明650212 [2]云南省昆明市西山区农业技术推广服务中心,云南昆明650199 [3]云南农业职业技术学院,云南昆明650031

出　　处：《现代畜牧科技》2023年第6期5-9,共5页Modern Animal Husbandry Science & Technology

基　　金：云南省科技特派团寻甸县肉牛产业科技特派团(202104BI090024);云南高原优质肉牛产业智慧管理研究(202102AE090009)。

摘　　要：为探究日粮不同精粗比对肉牛生长性能和血液生化指标的影响,试验采用完全随机区组设计,选择24头10月龄左右体重相近的健康西门塔尔杂交牛随机分为3组,预饲期10 d,正试期72 d。结果表明:随日粮精粗比的增加,西门塔尔杂交牛的平均日增重呈现先增加后降低的趋势,但3组间差异不显著(P>0.05),各组日均采食量逐渐降低且差异显著(P<0.05)。试验2组的平均日利润比试验1组和3组分别高8.26%、28.11%,3组比1组降低15.49%。随着精料水平提高,血浆白蛋白、谷丙转氨酶、谷草转氨酶、尿素氮、血糖和总蛋白含量均有升高的趋势,但差异均不显著(P>0.05)。综合各项指标分析,日粮精粗比为6∶4时西门塔尔杂交牛血液生化指标维持正常、可获得较高生长性能和经济效益。In order to explore the effects of dietary concentrate to forage ratio on production performance and blood biochemical indexes of beef cattle,the experiment adopted a completely randomized grouping design,and selected 24 healthy Simmental crossbred cattle about 10 months old with similar weight were randomly divided into 3 groups,the pre-test period was 10 days,and the trial period was 72 days.The results showed as follows:The average daily weight gain of Simmental crossbred cattle showed a trend of first increasing and then decreasing with the increase of dietary concentrate to forage,but the difference among the three groups was not significant(P>0.05);the daily average food intake of each group gradually decreased and the difference was significant(P<0.05).The average daily profit of group 2 was 8.26%and 28.11%higher than that of group 1 and group 3,respectively,while group 3 was 15.49%lower than that of group 1.With the level of increase of concentrate,the contents of plasma albumin,alanine aminotransferase,glutamic oxaloacetic transaminase,urea nitrogen,blood sugar,and total protein content all had an increasing trend,but the difference was not significant(P>0.05).Based on the analysis of various indicators,when the dietary concentrate to forage ratio was 6∶4,the blood biochemical indicators of Simmental crossbred cattle remained normal,and higher growth performance and economic benefits could be obtained.

关 键 词：日粮精粗比 肉牛 生产性能 血液生化指标 经济效益 

分 类 号：S823.5[农业科学—畜牧学]