全株青贮玉米饲料补充不同粗饲料对安格斯牛生长性能、屠宰性能和肉品质的影响  

Effects of whole silage corn feed supplemented with different roughage on growth performance,slaughter performance and meat quality of angus cattle

作　　者：谢行善 贾佳丽 XIE Xingshan;JIA Jiali(Zhangye Feed and Grass Technology Promotion Station,Zhangye,Zhejiang Gansu Province 734000,China;Agricultural Compregensive Administrative Law Enforcement Detchmwnt of Xinxiang City,Xinxiang,Henan Province,453000,China)

机构地区：[1]张掖市饲料饲草技术推广站,甘肃张掖734000 [2]新乡市农业综合行政执法支队,河南新乡453000

出　　处：《中国饲料》2024年第18期21-24,共4页China Feed

基　　金：甘肃省科技计划项目“张掖市高海拔种植青贮玉米“双30”标准试验示范项目”(23CXNG0002)。

摘　　要：文章旨在研究全株青贮玉米饲料补充不同粗饲料对安格斯牛生长性能、屠宰性能和肉品质的影响。试验将(18.4±0.8)月龄、(501.26±19.84)kg的45头公安格斯牛随机分为3组,每组15个重复,每个重复1头牛。分别使用青贮玉米加花生秧、燕麦草和苜蓿草的组合构成试验日粮。试验为期70 d,预饲期10 d,正试期60 d。结果:在初重一致的条件下(P>0.05),与花生秧和燕麦草组相比,苜蓿草组安格斯牛末重分别显著提高2.1%和1.9%(P<0.05);总增重和平均日增重分别显著提高15.56%和13.14%(P<0.05);采食量分别显著提高6.76%和6.29%(P<0.05);料重比分别显著降低7.61%和6.06%(P<0.05)。与花生秧组相比,苜蓿草组安格斯牛肾周和大网膜脂肪重量显著提高(P<0.05);苜蓿草组背膘厚度显著提高(P<0.05);苜蓿组肾脂和大网膜脂率显著提高(P<0.05);此外,不同粗饲料对胴体重、心周脂重、净肉重、屠宰率、净肉率、心脂率均无显著影响(P>0.05)。与花生秧组相比,苜蓿草和燕麦草组安格斯牛背最长肌a*值显著提高(P<0.05);苜蓿草组b*值显著降低(P<0.05);苜蓿草和燕麦草组安格斯牛背最长肌剪切力显著降低(P<0.05);苜蓿草组背最长肌脂肪含量显著提高(P<0.05);此外,不同粗饲料对安格斯牛背最长肌L*值、熟肉率、蛋白质、水分和灰分均无显著影响(P>0.05)。结论:在本试验条件下,苜蓿草和青贮玉米的组合对安格斯牛的促生长和肉质改善作用最佳。The aim of the present study was to inrestigate the effect of whole silage corn feed supplemented with different roughage on growth performance,slaughter performance and meat quality of Angus cattle.45 police cattle with similar age(18.4±0.8)and body weight[(501.26±19.84)kg]were divided into 3 groups,with 1 group for every 15 replicates and 1 replicate for each head.The experimental diets were composed of silage corn plus peanut seedling,oat grass and alfalfa grass.The experiment lasted for 70 days,including 10 days of pre-test and 60 days of trial.Results:under the condition of the same initial weight(P>0.05),the final weight of Angus cattle in alfalfa group was significantly increased by 2.1%and 1.9%compared with peanut seedling and oat grass groups(P<0.05).The total weight gain and average daily gain were significantly increased by 15.56%and 13.14%(P<0.05),respectively.Feed intake was significantly increased by 6.76%and 6.29%(P<0.05),respectively.The ratio of feed to gain was significantly decreased by 7.61%and 6.06%,respectively(P<0.05).Compared with peanut seedling group,the perirenal and omental fat weight of Angus cattle in alfalfa group was significantly increased(P<0.05);Backfat thickness of alfalfa group was significantly increased(P<0.05).The percentage of renal lipid and greater retinal lipid in alfalfa group was significantly increased(P<0.05);In addition,different roughage had no significant effects on carcass weight,pericardial fat weight,net meat weight,slaughter percentage,net meat percentage and heart fat percentage(P>0.05).Compared with peanut seedling group,a*value of longissimus dorsi muscle of Angus cattle in alfalfa and oat grass groups was significantly increased(P<0.05);b*value in alfalfa group was significantly decreased(P<0.05);The shear force of longissimus dorsi muscle of Angus cattle in alfalfa and oat grass groups was significantly decreased(P<0.05).The fat content of longissimus dorsi muscle in alfalfa group was significantly increased(P<0.05);In addition,different roughage had n

关 键 词：安格斯肉牛 粗饲料 生长性能 屠宰性能 肉品质 

分 类 号：S823[农业科学—畜牧学]