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| 马铃薯淀粉渣和玉米秸秆混合青贮料对肉牛瘤胃内环境及血清生化指标的影响 | |
| 引用本文： | 王典,李发弟,张养东,卜登攀,孙鹏,周凌云.马铃薯淀粉渣和玉米秸秆混合青贮料对肉牛瘤胃内环境及血清生化指标的影响[J].动物营养学报,2012,24(7):1361-1367. |
| 作者姓名： | 王典 李发弟 张养东 卜登攀 孙鹏 周凌云 |
| 作者单位： | 1. 甘肃农业大学动物科技学院,兰州 730070;中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京 100193 2. 甘肃农业大学动物科技学院,兰州,730070 3. 中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京 100193 |
| 基金项目： | 现代农业产业技术体系专项资金资助(nycytx-04-01) |
| 摘 要： | 本试验旨在研究马铃薯淀粉渣和玉米秸秆混合青贮料对肉牛瘤胃内环境及血清生化指标的影响.选择4头平均体重(455.00±19.50)kg的健康秦川杂交肉牛,随机分配到4×4拉丁方试验设计中.4组分别为:1)对照组,40％精料+60％玉米秸秆黄贮料；2)S25组,40％精料+45％玉米秸秆黄贮料+15％马铃薯淀粉渣和玉米秸秆混合青贮料；3)S50组,40％精料+30％玉米秸秆黄贮料+30％马铃薯淀粉渣和玉米秸秆混合青贮料；4)S75组,40％精料+15％玉米秸秆黄贮料+45％马铃薯淀粉渣和玉米秸秆混合青贮料.结果表明:各组肉牛平均日增重、干物质采食量和蛋白质摄入量均差异不显著(P＞0.05).S25、S50和S75组肉牛瘤胃液氨态氮浓度均高于对照组(P＞0.05),分别提高了58.96％、36.35％、26.17％.各组乙酸、丙酸、丁酸、戊酸、总挥发性脂肪酸浓度和乙酸、丙酸、丁酸、戊酸比例及乙酸/丙酸、(乙酸+丁酸)/丙酸均无显著差异(P＞0.05).各组间血清总蛋白、尿素氮和葡萄糖含量均无显著差异(P＞0.05).由此可知,马铃薯淀粉渣和玉米秸秆混合青贮料替代部分玉米秸秆黄贮料能提高肉牛瘤胃液氨态氮浓度,对瘤胃液挥发性脂肪酸含量和血清生化指标无影响.马铃薯淀粉渣和玉米秸秆混合青贮料可以替代肉牛饲粮中75％的玉米秸秆黄贮料. |
| 关 键 词： | 马铃薯淀粉渣 肉牛 瘤胃内环境 血清生化指标 |
Mixed Silage of Potato Pulp and Corn Straw Affects Rumen Environment and Serum Biochemical Parameters of Beef Cattle |
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| WANG Dian , LI Fadi , ZHANG Yangdong , BU Dengpan , SUN Peng , ZHOU Lingyun.Mixed Silage of Potato Pulp and Corn Straw Affects Rumen Environment and Serum Biochemical Parameters of Beef Cattle[J].Acta Zoonutrimenta Sinica,2012,24(7):1361-1367. | |
| Authors: | WANG Dian LI Fadi ZHANG Yangdong BU Dengpan SUN Peng ZHOU Lingyun |
| Institution: | 1.College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China; 2.State Key Laboratory of Animal Nutrition,Institute of Animal Sciences,Chinese Academy of Agricultural Sciences,Beijing 100193,China) |
| Abstract: | This study was conducted to determine the effects of mixed silage of potato pulp and corn straw on rumen environment and serum biochemical parameters of beef cattle.Four healthy Qinchuan cross beef cattle with an average body weight of(455.00±19.50) kg were randomly assigned in a 4 × 4 Latin squares design.Four groups included: 1) control group,40% basal diet+60% yellow corn silage;2) S25 group,40% basal diet+45% yellow corn silage+15% mixed silage of potato pulp and corn straw;3) S50 group,40% basal diet+30% yellow corn silage+30% mixed silage of potato pulp and corn straw;4) S75 group,40%basal diet+15% yellow corn silage+45% mixed silage of potato pulp and corn straw.The results showed that there was no significant difference in ADG,DMI and CP intake among all groups(P>0.05).The ammonia nitrogen concentration was increased by 58.96%,36.35% and 26.17% in groups S25,S50 and S75 than that in the control group(P>0.05),respectively.No significant differences were observed in concentrations of acetate propionate,butyrate,valerate,volatile fatty acid and percentage of acetate,propionate,butyrate,valerate,and the rations ratios of acetate to propionate and acetate to propionate and butyrate(P>0.05).No significant differences were observed in contents of total protein,urea nitrogen and glucose in serum(P>0.05).In conclusion,the mixed silage of potato pulp and corn straw can increase the ammonia nitrogen concentration in rumen fluids and do not affect the growth performance,volatile fatty acid content and serum biochemical parameters of beef cattle.Therefore,the study suggests that it is feasible when mixed silage of potato pulp and corn straw replaced 75% yellow corn silage in the beef cattle diet. |
| Keywords: | potato pulp beef cattle rumen environment serum biochemical parameters |
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