摘要
为研究日粮添加花生秧和苜蓿草粉对肉羊增重性能、器官发育及血液指标的影响,选取4.5~5.0月龄、体重(21.40±1.15)kg的健康波麻杂交去势羊30只,随机分为3组,每组10只,饲喂花生秧、花生秧+苜蓿草粉、苜蓿草粉为粗饲料的日粮,采用全混合饲粮,各组日粮营养水平基本一致。预试期10 d,正试期60 d,试验始末称重,进行屠宰试验,并采集血液。结果表明:花生秧+苜蓿草粉和苜蓿草粉组宰前活重和胴体重均显著高于花生秧组(P<0.05),日增重、屠宰率极显著高于花生秧组(P<0.01),而料重比极显著低于花生秧组(P<0.01);各组的干物质采食量差异不显著(P>0.05);除花生秧+苜蓿草粉和苜蓿草粉组瘤胃重量显著高于花生秧组外,各组器官重量及占宰前活重比例差异不显著(P>0.05);各组间羊血液常规指标值均处于正常范围,花生秧+苜蓿草粉和苜蓿草粉组血清白蛋白、血糖显著高于花生秧组(P<0.05),尿素氮显著低于花生秧组(P<0.05);花生秧+苜蓿草粉组平均每kg增重成本最低。总而言之,花生秧和苜蓿草粉搭配使用较单一饲喂效果更好。
The aim of this study was determine the effects of peanut vine and alfalfa meal on the growth performance,internal organ development,and blood indexes of Boer×Macheng crossbred goats.Thirty healthy castrated Boer(♂)×Macheng black(♀)goats[(21.40±1.15)kg,4.5-5.0 months of age]were randomly assigned to three groups,with 10 goats per group.Goats in the three groups were fed peanut vine,peanut vine+alfalfa meal,and alfalfa as roughage,respectively.Total mixed rations were used,and the nutritional levels of the diets in each group were basically the same.The experiment consisted of a 10-day pre-trial period and a 60-day trial period.The body weight of goats was measured at the beginning and end of the trial.The animals were slaughtered and blood was collected at the end of the experiment.The main results were as follows:the body weight before slaughter and carcass weight were significantly higher in the peanut vine+alfalfa meal and alfalfa groups than in the peanut vine group(P<0.05);the average daily gain and dressing percentage were significantly higher in the peanut vine+alfalfa meal and alfalfa groups than in the peanut vine group(P<0.01);the feed gain ratio was significantly lower in the peanut vine+alfalfa meal and alfalfa groups than in the peanut vine group(P<0.01).There was no significant difference in dry matter intake among three groups.However,the rumen weight was significantly higher in the peanut vine+alfalfa meal group and the alfalfa group than in the peanut vine group(P<0.05).There was no significant difference in organ weight and proportion of LWBS among the three groups(P>0.05).The blood indexes of goats in each group were in the normal range.The serum albumin and blood glucose concentrations were significantly higher in the peanut vine+alfalfa meal group and alfalfa group than in the peanut vine group(P<0.05).The urea nitrogen concentration was significantly lower in the peanut vine+alfalfa meal group and alfalfa group than in the peanut vine group(P<0.05).The average cost per kilogram of weight gain was lower in the peanut vine+alfalfa meal group than in the peanut vine group and alfalfa group.These results show that the combination of peanut vine+alfalfa meal is better than feeding either component singly.
作者
索效军
张年
杨前平
陶虎
熊琪
李晓锋
张凤
陈明新
SUO Xiao-jun;ZHANG Nian;YANG Qian-ping;TAO Hu;XIONG Qi;LI Xiao-feng;ZHANG Feng;CHEN Ming-xin(Institute of Animal Husbandry and Veterinary Medicine,Hubei Academy of Agricultural Sciences,Wuhan 430064,China;Key Laboratory of Animal Embryonic Engineering and Molecular Breeding in Hubei Province,Wuhan 430064,China)
出处
《草业学报》
CSCD
北大核心
2021年第5期146-154,共9页
Acta Prataculturae Sinica
基金
湖北省农业科技创新中心项目(2020-620-004-002)
湖北省农业科技创新行动项目(2018SKJCX05)资助。
关键词
花生秧
苜蓿草粉
生长性能
屠宰性能
血液指标
经济效益
peanut vine
alfalfa meal
growth performance
slaughter performance
blood indexes
economic benefit
