摘要
试验旨在研究不同精粗比日粮对高山美利奴细毛羊断奶羔羊平均日增重、血液生化指标的影响,采用单因素随机设计,选取4月龄断奶、体质健康、体重为(25.32±0.15)kg的高山美利奴细毛羊60只,随机分成4组,每组3个重复,每组重复5只,试验组Ⅰ、Ⅱ、Ⅲ、Ⅳ的精粗比分别为3:7、4:6、5:5、6:4,预试期5 d,正试期60 d。结果显示:随着日粮精料饲喂量的增加,高山美利奴细毛羊体增重和平均日增重呈增长趋势,血液中的总蛋白、白蛋白、尿素氮、谷草转氨酶、谷丙转氨酶、总胆固醇含量差异不显著(P>0.05),而血糖含量呈增长趋势,且试验Ⅳ组显著高于其他3组(P>0.05)。结果说明高山美利奴细毛羊断奶羔羊育肥期以精粗比为6:4的日粮适宜。
The experiment was conducted to study the effects of different dietary concentrate-to-forage ratios on average daily gain and blood biochemical indexes of weanling lambs of Alpine Merino fine-wool sheep. A singlefactor random design was used to select 60 Alpine Merino fine-wool sheep, weaned at four months of age, healthy and of similar weights(25.32 ± 0.15 kg). They were randomly divided into four groups with three replications each group and five replications each group. The concentrate-to-forage ratio of test group Ⅰ, Ⅱ, Ⅲ and Ⅳ were 3:7, 4:6, 5:5, 6:4, 5:5 and 6:4, respectively, with a pretrial period of 5 days and a positive trial period of 60 days. The results showed that the total and average daily weight gain of Alpine Merino fine-wool sheep increased with the increase of concentrate feed. There was no significant difference in the contents of the total protein, albumin, urea nitrogen, glutamic oxaloacetic transaminase, glutamic pyruvic transaminase and the total cholesterol in blood(P>0.05), but the content of blood glucose increased significantly, and the date of test group Ⅳ was higher than those of other three groups(P<0.05). The diet with dietary concentrate-to-forage ratio of 6:4 was suitable for weaning lambs of Alpine Merino fine-wool sheep.
作者
赵进韬
ZHAO Jintao(Sheep Breeding Technology Promotion Station of Gansu Province,Zhangye 734031,Gansu China)
出处
《饲料博览》
CAS
2022年第3期56-59,76,共5页
Feed Review
基金
国家绒毛用羊产业技术体系资助项目(CARS—40—33)。
关键词
日粮精粗比
高山美利奴细毛羊
断奶期
平均日增重
血液生化指标
dietary concentrate-to-forage ratio
Alpine Merino fine-wool sheep
weaning period
average daily weight gain
blood biochemical index
