摘要
试验旨在研究不同饲草料配比对安格斯牛生长发育、胴体性状和肉质的影响。选取健康且体重相近的6月龄安格斯牛64头(公、母各半),随机分为4组,每组4重复,每个重复4头牛。各组牛分别饲喂不同饲草配比的全混合日粮。预试期15 d,正式试验期360 d。结果显示:12月龄、18月龄试验1组公、母牛体重均显著高于试验3组和对照组(P<0.05),12月龄试验2组公牛体重显著高于试验3组(P<0.05),18月龄试验2组公牛体重显著高于试验3组和对照组。7月龄至12月龄试验1组公、母牛平均日增重均显著高于对照组和试验3组(P<0.05),13月龄至18月龄试验1组母牛平均日增重均显著高于试验3组(P<0.05),7月龄至18月龄试验1组公、母牛平均日增重显著高于试验3组(P<0.05)。试验1组公牛宰前重、胴体重和屠宰率均显著高于对照组和试验3组(P<0.05),试验1组的眼肌面积和背膘厚度显著高于其他组(P<0.05);试验1组和试验2组的肌肉和脂肪颜色显著低于对照组(P<0.05)。研究表明,试验1组的饲草料配比对提高安格斯牛生长发育和改善肉品质较好。
The experiment was to study the effect of different forage ratio on growth and development,carcass trait and meat quality of Angus cattle.A total of 64 healthy six-month-old Angus cattle(half bulls and half cows)with similar body weight were randomly divided into four groups with four replicates in each group and four cattle in each replicate.Each group cattle was fed a total mixed diet with different forage proportions.The pre-test lasted for 15 d and the formal test lasted for 360 d.The results showed that the body weight of bull and cow in group 1 was significantly higher than that in group 3 and control group at 12 and 18-month-old(P<0.05),the body weight of bull in group 2 was significantly higher than that in group 3 and control group at 12 and 18-month-old(P<0.05),and that in group 2 was significantly higher than that in group 3 and control group at 18-month-old.Average daily gain of bulls and cows in group 1 was significantly higher than that in control group and group 3 at 7~12-month-old(P<0.05),average daily gain of bulls and cows in group 1 was significantly higher than that in group 3 at 13~18-month-old(P<0.05),average daily gain of bulls and cows in group 1was significantly higher than that in group 3 at 7~18-month-old(P<0.05).The pre-slaughter weight,carcass weight and slaughter rate of bulls in group 1 were significantly higher than those in control group and group 3(P<0.05),and the eye muscle area and back fat thickness of bulls in group 1 were significantly higher than those in other groups(P<0.05).Muscle and fat color in group 1 and group 2 were significantly lower than those in control group(P<0.05).The study indicates that the forage and feed ratio of group 1 is better for improving the growth and meat quality of Angus cattle.
作者
吴燕
邹茂华
罗清云
王春梅
张依裕
WU Yan;ZOU Mao-hua;LUO Qing-yun;WANG Chun-mei;ZHANG Yi-yu
出处
《饲料研究》
CAS
北大核心
2022年第23期1-6,共6页
Feed Research
基金
贵州省科技支撑计划项目资助(项目编号:黔科合支撑[2019]2360号)。
关键词
安格斯牛
饲草料配比
生长发育
胴体性状
肉品质
Angus cattle
forage ratio
growth and development
carcass trait
meat quality
