不同品系青贮甜高粱的营养价值比较分析  

Assessment of Nutritive Values in Different Whole Sorghum Silages

作　　者：蒋涛[1] 宣晶晶[1] 马双 马帅 颜欣超 李伟 王立克[1] 胡忠泽[1] 任清长[1] 王福 史文玉 赵克勤 JIANG Tao1, XUAN Jingjing1, MA Shuang1, MA Shuai1, YAN Xinchao1, LI Wei1, WANG Like, HU Zhongze1, REN Qingchang1 , WANG Fu2, SHI Wenyu3, ZHAO Keqin4(1. College of Animal Science, Anhui Science and Technology University, Fengyang 233100, China; 2. Huoshan County Animal Husbandry and Veterinary Bureau, Huoshan 237200, China; 3. Guzhen Limin Sheep Breeding Industry Co. , Ltd. , Guzhen 233712, China; 4. Huoshan County Shuikousi Agricultural Co. , Ltd. , Huoshan 237200, Chin)

机构地区：[1]安徽科技学院动物科学学院,安徽凤阳233100 [2]霍山县畜牧兽医局,安徽霍山237220 [3]固镇县利民羊业养殖有限公司,安徽固镇233712 [4]霍山县水口寺农业有限公司,安徽霍山237220

出　　处：《安徽科技学院学报》2018年第1期8-12,共5页Journal of Anhui Science and Technology University

基　　金：安徽省教育厅科学研究重大项目(KJ2015ZD17);安徽省现代农业牛羊产业技术体系2018科技提升计划;安徽科技学院人才引进项目(1409);安徽省科技攻关项目(1704a07020084)

摘　　要：目的:评价不同品系青贮全株甜高粱的饲用营养价值,为其推广种植提供理论依据。方法:采集不同品系青贮全株甜高粱,利用常规技术分析其营养物质含量;利用尼龙袋技术,测定其干物质瘤胃降解率;采用拉丁方试验,研究其对瘤胃挥发性脂肪酸浓度的影响。结果:不同品系的青贮全株甜高粱,其营养物质含量存在显著差异,其中品系3的纤维类碳水化合物含量最高,品系4最低。尼龙袋试验结果显示,甜高粱品系4青贮的瘤胃干物质有效降解率最高,品系3的最低。饲养试验结果显示,饲喂青贮后不同品系的甜高粱,瘤胃挥发性脂肪酸的发酵类型存在显著差异:与品系3相比,品系4的瘤胃乙酸摩尔百分比低4.97%,丙酸摩尔百分比高16.95%,瘤胃乙酸/丙酸值低16.95%(P<0.05)。结论:青贮甜高粱品系4的饲用营养价值相对较高,适宜推广和种植。Objective：To assess nutritive values in different whole sorghum silages.Methods：Samples of different whole sorghum silages were collected to determine their nutrition including dry matter,crude protein and neutral detergent fiber content so on.In addition,dry matter degradations in the rumen were also determined with nylon bag technique.Moreover,a Latin square test was carried out to investigate the effects of whole sorghum silages on productions in ruminal volatile fatty acids profile.Results：The result showed that there were significant differences in the nutrient contents of silage sweet sorghum among different strains,and the strain 3 had the highest fiber carbohydrate content while the lowest was the strain 4.The results of nylon bag test showed that the silage dry matter of sweet sorghum in line 4 silage had the highest effective degradation rate while the lowest was in the line 3.The results of feeding experiments showed that the fermentation types of volatile fatty acids in the rumen were significantly different after feeding different sweet sorghum silage：Compared with strain 3,the percentage of acetic acid in the rumen of strain 4 was lower by 4.97%,while propionic acid was higher by 16.95%,whereas ruminal ratio of acetate to propionate was lower by 16.95%lower（P〈0.05）.Conclusion：The present trial indicated that sorghum silage of the strain 4 had relatively great nutritive values and suitable for planting.

关 键 词：青贮甜高粱 营养 尼龙袋技术 挥发性脂肪酸 

分 类 号：S816[农业科学—饲料科学]