摘要
文章旨在研究浒苔多糖对肉羊生长性能、养分表观消化率及瘤胃发酵的影响,试验选择90只健康无病,且初重相近[(21.19±1.06)kg]的育肥湖羊。随机分为对照组和浒苔多糖组,每组3个重复,每个重复15只。对照组饲喂基础日粮,浒苔多糖组饲喂基础日粮+800 mg/kg浒苔多糖。试验为期45 d。结果:(1)浒苔多糖组平均日增重比对照组显著提高10.46%(P<0.05),料重比比对照组显著降低9.14%(P<0.05)。(2)与对照组相比,浒苔多糖组干物质、中性洗涤纤维表观消化率显著提高(P<0.05),且粗蛋白质表观消化率有上升趋势(P=0.08)。(3)与对照组相比,浒苔多糖组TVFA、丙酸产量显著提高(P<0.05),且乙丙比显著降低(P<0.05)。综上所述,浒苔多糖能够改善养分表观消化率,增加TVFA和丙酸产量,从而提高肉羊生长性能。
This study was conducted to investigate the effects of Enteromorpha polysaccharide on the growth performance,apparent nutrient digestibility,and rumen fermentation of meat sheep.The trial selected 90 healthy,disease-free,fattening Hu sheep with similar initial body weights(21.19±1.06 kg).They were randomly divided into the control group and the enteromorpha polysaccharide group,with 3 replicates per group and 15 sheep per replicate.The control group was fed a basal diet,while the enteromorpha polysaccharide group was fed the basal diet supplemented with 800 mg/kg enteromorpha polysaccharide.The experimental period lasted for 45 days.Results:(1)The ADG in the enteromorpha polysaccharide group was significantly increased by 10.46%compared to the control group(P<0.05),and the F/G was significantly decreased by 9.14%compared to the control group(P<0.05).(2)Compared to the control group,the apparent DM and NDF digestibility in the enteromorpha polysaccharide group was significantly increased(P<0.05),and there was an increasing trend in apparent CP digestibility(P=0.08).(3)Compared to the control group,the enteromorpha polysaccharide group showed a significant increase in TVFA and propionate production(P<0.05),and a significant decrease in the acetate-to-propionate ratio(P<0.05).In conclusion,enteromorpha polysaccharide can improve apparent nutrient digestibility,increase TVFA and propionate production,thereby enhancing the growth performance of meat sheep.
作者
英木代
李顺平
杨帆
YING Mudai;LI Shunping;YANG Fan(Gansu Gannan Tibetan Autonomous Prefecture Vocational School,Hezuo,Gansu Province 747000,China)
出处
《中国饲料》
北大核心
2025年第22期37-40,共4页
China Feed
关键词
浒苔多糖
肉羊
生长性能
养分表观消化率
瘤胃发酵
enteromorpha polysaccharide
meat sheep
growth performance
apparent nutrient digestibility
rumen fermentation
