中国草食动物科学2025，Vol.45Issue(1)：95-100,6.DOI:10.3969/j.issn.2095-3887.2024.00.095
尿素氨化水稻秸秆对湖羊育肥效果的研究
Study on the Fattening Effect of Urea Ammoniated Rice Straw in Hu Sheep
摘要
Abstract
The aim of this experiment is to investigate the effect of different urea levels on the ammonified rice straw and the impact of different addition amounts of ammonified rice straw on the fattening effect of Hu sheep.In this study,a single factor experimental design was adopted.Rice straw was ammoniated with four different urea supplemental le-vels(3％,4％,5％,6％),with 3 replicates in each group.And rice straw without adding urea was the control group.Ac-cording to the results of the ammonification test,the optimal amount of urea addition with the best ammonification ef-fect was selected for subsequent experiments.90 male Hu sheep weighing around 20 kg were selected for the fattening experiment,and they were randomly divided into 3 groups,with 3 replicates in each group and 10 sheep in each repli-cate.The experimental group Ⅰ was the control group,and the roughage was non ammoniated rice straw.The roughage of the experimental group Ⅱ was 50％non ammoniated rice straw+50％ammoniated rice straw.The roughage of the ex-perimental group Ⅲ was all ammoniated rice straw.The results of the straw ammonification test showed that the color,odor,and texture of ammonified rice straw could all reach normal levels under different urea addition levels.The crude protein content of rice straw in each ammonification treatment group was significantly higher than that in the control group(P<0.01),and the crude protein content of the 5％urea addition group was significantly higher than that of the 3％and 4％urea addition groups(P<0.05).The neutral detergent fiber content in the 5％and 6％urea addition groups was significantly lower than that in the control group(P<0.01),and the acidic detergent fiber content in the 4％,5％,and 6％urea addition groups was significantly lower than that in the control group(P<0.05).The results of the Hu sheep fattening experiment showed that the average daily weight gain of sheep in groups Ⅱ and Ⅲ was significantly higher than that of group Ⅰ(P<0.01).The feed to weight ratio of experimental groups Ⅱ and Ⅲ was significantly lower than that of experimental group Ⅰ(P<0.01).The unit weight gain cost of experimental groups Ⅱ and Ⅲ was lower than that of experimental group Ⅰ,and the weight gain and final profit were higher than those of experimental group Ⅰ.In summary,under the conditions of this experiment,the most suitable urea addition for ammoniated rice straw is 5％;the use of ammoniated rice straw as roughage in the fattening diet of Hu sheep can significantly increase daily weight gain and reduce feed to weight ratio.关键词
尿素/氨化/水稻秸秆/湖羊/育肥效果Key words
urea/ammoniation/rice straw/Hu sheep/fattening effect分类
农业科技引用本文复制引用
韩大勇,刘海霞,周明夏,朱爱文,张耀..尿素氨化水稻秸秆对湖羊育肥效果的研究[J].中国草食动物科学,2025,45(1):95-100,6.基金项目
泰州市科技支撑计划(社会发展)项目(TS202208) （社会发展）
江苏省职业院校学生创新创业培育计划项目(G-2023-0713) （G-2023-0713）
