不同饲喂模式对绵羊营养物质表观消化率及血液生化指标的影响  

Effects of different feeding patterns on nutrients apparent digestibility and blood biochemical indexes in sheep

作　　者：于忠升 张爱忠[1] 姜宁[1] YU Zhongsheng;ZHANG Aizhong;JIANG Ning(College of Animal Sciences and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

机构地区：[1]黑龙江八一农垦大学动物科技学院

出　　处：《黑龙江畜牧兽医》2018年第11期59-62,253-254,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金：国家自然科学基金项目(31372338);黑龙江省农垦总局科技攻关项目(HNKXV-08-04A)

摘　　要：为了研究不同饲喂模式对绵羊营养物质表观消化率及血液生化指标的影响,试验选取6只安装有永久性瘤胃瘘管的绵羊作为试验动物,采用3×3拉丁方试验设计,共分3期进行,分别采用不同的饲喂模式饲喂,其中传统组采用传统饲喂模式即先粗后精,粗饲料与精饲料饲喂的间隔时间为30 min;全混合日粮（TMR）组饲喂全混合日粮;TMR颗粒组饲喂全混合日粮颗粒饲料。每个试验期17 d,其中预试期为10 d,正试期为7 d,全期共51 d。结果表明：不同饲喂模式对绵羊干物质、有机物、粗脂肪表观消化率的影响各组间差异不显著（P〉0.05）,TMR颗粒组粗蛋白、中性洗涤纤维的表观消化率显著高于其他两组（P〈0.05）,TMR颗粒组和传统组酸性洗涤纤维的表观消化率显著高于TMR组（P〈0.05）;不同饲喂模式对绵羊血清中谷草转氨酶、谷丙转氨酶活性,总蛋白、白蛋白、球蛋白、三酰甘油、尿素氮含量的影响各组间差异不显著（P〉0.05）,TMR颗粒组葡萄糖浓度显著高于传统组（P〈0.05）,传统组和TMR组中总胆固醇含量显著高于TMR颗粒组（P〈0.05）。说明颗粒饲料能够促进绵羊对蛋白质及纤维的消化与吸收,降低尿素氮含量,提高饲料转化率和氮的利用率,促进其消化吸收。The aim of the present study was to investigate the effects of different feeding patterns on nutrients apparent digestibility and blood biochemical indexes in sheep. Six sheep with permanent rumen fistula were selected as tested animals. 3×3 Latin square design were used in experiments that was divided into 3 stages. The animals were fed in different feeding modes. The traditional feeding mode was used in control group,namely first roughage and then concentrate. The interval between forage and concentrate feed was 30 min. The total mixed ration（ TMR） group was fed with the full mixed ration,and the granular group was fed with the full mixed granular ration feeding. Each trial period was 17 days,including10 days in pre-trial period of,7 days in trial period and 51 days in whole period. The results showed that the effects of different feeding modes on apparent digestibility of dry matter,organic matter and crude fat were not significantly different among each group（ P〈0. 05）. Apparent digestibility of crude protein and neutral detergent fiber in TMR granule group was significantly higher than that in other two groups（ P〈0. 05）. The apparent digestibility of acidic detergent fiber in TMR granule group and control group was significantly higher than that in TMR group（ P〈0. 05）. There was no significant difference in the serum levels of aspartate aminotransferase,alanine aminotransferase,total protein,albumin,globulin,triglyceride and urea nitrogen among each group（ P〈0. 05）. The glucose concentration in the TMR granule group was significantly higher than that in the control group（ P〈0. 05）. The total cholesterol content in control group and TMR group was significantly higher than that in TMR granular group（ P〈0. 05）. The results indicated that the pellet feed could promote the digestion and absorption of protein and fiber in sheep,reduce the content of urea nitrogen,improve feed conversion and nitrogen utilization rate,and promote their digestion and absorption.

关 键 词：传统饲喂模式 全混合日粮 颗粒饲料 表观消化率 血液生化指标 绵羊 

分 类 号：S826[农业科学—畜牧学]