DDGS添加比例对肉羊生长性能、屠宰性能及饲养成本的影响  

The impact of DDGS inclusion rates on growth performance,slaughter characteristics,and feeding costs of meat sheep

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作  者:刘少荣[1] LIU Shaorong(Liuzhou City Vocational College,Liuzhou,Guangxi Province 545036,China)

机构地区:[1]柳州城市职业学院,广西柳州545036

出  处:《中国饲料》2024年第10期136-139,共4页China Feed

基  金:柳州城市职业学院2023年科研项目(2023KYYB44)。

摘  要:文章旨在研究玉米DDGS添加比例对肉羊生长性能、屠宰性能及饲养成本的影响。试验筛选体重、健康情况、年龄相似的肉羊40只,随机分为1个对照组和3个组试验组,每组10个重复,对照组日粮添加0%的DDGS,3个试验组分别在日粮中添加10%、20%和30%的DDGS,试验为期150 d。结果表明,在肉羊生长性能方面,日粮中添加的玉米DDGS含量在0%~20%范围内时,随着日粮玉米DDGS含量的升高,对肉羊日增重、末体重,试验周期增加体重逐渐升高(P<0.05),料重比逐渐下降(P<0.05);当日粮中玉米DDGS的添加比例增加30%时,肉羊末体重、日增重,试验周期增加体重呈下降趋势。在肉羊屠宰性能方面,肉羊的胴体重、肉净重、屠宰率随日粮中DDGS添加比例的升高而升高(P<0.05),日粮中添加20%的DDGS时,肉羊胴体重、肉净重、屠宰率最高,当再继续增加DDGS比例为30%,肉羊的胴体重、肉净重、屠宰率开始下降,并且与对照组无差异,净肉率不受日粮中添加DDGS比例而影响。在饲养成本方面,随着日粮中添加DDGS的比例增加,肉羊每增重1 kg的成本降低,与对照相比,添加DDGS的比例为10%和20%,增重成本分别降低为2.63和4.76,日粮中DDGS的添加比例为20%时,肉羊增重成本最低,表明饲养成本最低,当在增加日粮中DDGS的比例为30%时,肉羊的增重成本开始升高。The aim of this experiment was to study the effects of corn DDGS supplemental ratio on growth performance,slaughter performance and feeding cost of mutton sheep.Forty meat sheep with similar weight,health status and age were randomly divided into 1 control group and 3 experimental groups with 10 sheep in each group and 10 replicates.0%DDGS was added to the diets of the control group,and 10%,20%and 30%corn DDGS were added to the diets of the 3 experimental groups,respectively.The experiment period was 150 days.Results On the surface,in terms of growth performance of meat sheep,with the increase of corn DDGS content in the range of 0%to 20%,the daily gain body weight,final body weight and experimental period increase body weight of meat sheep gradually increased(P<0.05),and the ratio of feed to gain gradually decreased(P<0.05).However,when the added proportion of corn DDGS in the diet was increased to 30%,the final body weight,daily body weight and weight during the experiment period showed a decreasing trend.In terms of slaughtering performance,carcass weight,net meat weight and slaughter rate of meat sheep increased with the increase of DDGS supplemental ratio in the diet(P<0.05).When 20%DDGS was added to the diet,carcass weight,net meat weight and slaughter rate of meat sheep showed the highest performance.When the DDGS ratio continued to increase to 30%,carcass weight,net meat weight of meat sheep,and carcass weight,net meat weight of meat sheep.The slaughter rate began to decrease,and there was no difference from the control group,and the net meat rate was not affected by the proportion of DDGS added to the diet.In terms of feeding cost,with the increase of the proportion of DDGS added to the diet,the cost of meat sheep per 1 kg gain decreased.Compared with the control,the proportion of DDGS added was 10%and 20%,and the weight gain cost was reduced to 2.63 and 4.76,respectively.When the proportion of DDGS added to the diet was 20%,the weight gain cost of meat sheep was the lowest,indicating the lowest feeding

关 键 词:DDGS 生产性能 屠宰性能 饲养成本 

分 类 号:S826[农业科学—畜牧学]

 

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