摘要
文章旨在研究复合化学处理水稻秸秆对肉羊生长性能和营养成分表观消化率的影响。试验在规模化肉羊养殖场选取156头体质健康、体重相近的肉羊,随机分为对照组、T1、T2和T3组,每组3个重复,每个重复13头,各组饲喂同营养成分日粮,对照组饲喂未经处理的水稻秸秆,T1饲喂碱化处理的水稻秸秆,T2饲喂氨化处理的水稻秸秆,T3饲喂碱化+氨化处理的水稻秸秆,饲喂为期30 d。试验结果表明:(1)生长性能:T1、T2和T3肉羊末重、平均日增重、平均日采食量均显著高于对照组,且T3显著高于T1和T2(P<0.05),T1和T2无显著差异(P>0.05),T3料重比显著低于T1、T2和对照组(P<0.05),T1、T2组和对照组相比无显著差异(P>0.05);(2)营养成分表观消化率:各组肉羊对干物质、钙和磷的表观消化率无显著差异(P>0.05);T3组粗蛋白质表观消化率高于T1、T2组和对照组(P<0.05),T3组对酸性洗涤纤维和中性洗涤纤维的表观消化率显著低于T1、T2组和对照组(P<0.05),且T1和T2组显著低于对照组(P<0.05)。经试验结果证实,在肉羊基础日粮中添加复合化学处理的水稻秸秆可促进其营养成分吸收,提高肉羊生长性能,以碱化+氨化复合化学处理后的水稻秸秆的饲喂效果较为理想。
The effects of compound chemical treatment of rice straw on growth performance and nutrient apparent digestibility of meat sheep were investigated.A total of 156 healthy meat sheep with similar body weight were randomly selected from large-scale meat sheep farms and randomly divided into control group,T1,T2 and T3 groups with 3 replicates in each group and 13 sheep in each replicate.Each group was fed the same nutrient diet,the control group was fed untreated rice straw,T1 was fed alkaline treated rice straw,and T2 was fed ammoniated rice straw.T3 was fed with alkaline and ammoniated rice straw,and the feeding cycle was 30 days.The results showed as follows:(1)Growth performance:The final weight,average daily gain and average daily feed intake of meat sheep in T1,T2 and T3 were higher than those in control group,and T3 was higher than T1 and T2(P<0.05),there was no difference between T1 and T2(P>0.05),and the feed to gain ratio of T3 was lower than T1,T2 and control group(P<0.05),there was no difference between T1,T2 and control group(P>0.05).(2)Apparent digestibility of nutrients:There were no differences in apparent digestibility of dry matter,calcium and phosphorus among all groups(P>0.05).The apparent digestibility of T3 to crude protein was higher than that of T1,T2 and control group(P<0.05),the apparent digestibility of T3 to acid detergent fiber and neutral detergent fiber was lower than that of T1,T2 and control group(P<0.05),and T1 and T2 were lower than that of control group(P<0.05).The experimental results showed that the addition of rice straw with complex chemical treatment could promote the absorption of nutrients and improve the growth performance of meat sheep,and the effect of rice straw with alkali and ammonia combined chemical treatment was better.
作者
栾伟东
LUAN Weidong(Zhoukou Technician College,Zhoukou,Henan Province 466000,China)
出处
《中国饲料》
北大核心
2024年第6期121-124,共4页
China Feed
关键词
碱化
氨化
肉羊
生长性能
营养成分表观消化率
alkalization
ammonify
mutton sheep
growth performance
apparent digestibility of nu
