氧乐果对人工瘤胃营养物质消化代谢的影响  

EFFECTS OF OMETHOATE ON ARTIFICIAL RUMEN NUTRIENT METABOLISM

作　　者：姚宝强[1] 万发春[2] 杨在宾[1] 杨维仁[1] 姜淑贞[1] 张桂国[1] 

机构地区：[1]山东农业大学动物科技学院,山东泰安271018 [2]山东省农业科学院畜牧兽医研究所,山东济南250100

出　　处：《山东农业大学学报（自然科学版）》2010年第1期93-98,共6页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：国家科技支撑计划(2006BAD14B07-6)

摘　　要：本研究旨在探讨氧乐果对人工瘤胃营养物质代谢规律的影响。利用DFCCS-Ⅱ型双外流连续培养系统,采用4×4拉丁方设计,试验分4个时期完成,每个时期设4个氧乐果水平:0、10、100与1000 mg/kg日粮。每期预试期4 d,正试期5 d,测定不同时间点的瘤胃液pH值、NH3-N浓度及干物质(DM)、有机物(OM)、粗蛋白质(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和总能(GE)表观消化率。结果表明,日粮中添加10、100和1000 mg/kg氧乐果,使人工瘤胃液NH3-N浓度分别降低1.97%、2.12%和6.06%(P<0.05),CP表观消化率分别降低17.60%、19.05%和13.09%(P<0.05)。然而,添加氧乐果可以使DM表观消化率分别提高2.92%、6.18%、4.93%(P<0.05);OM表观消化率提高12.92%、19.33%、16.24%(P<0.05);NDF表观消化率提高4.95%、6.10%、9.38%(P<0.05);ADF表观消化率提高9.00%、12.40%、16.22%(P<0.05);GE表观消化率提高3.65%、9.35%、13.20%(P<0.05)。另外,日粮中添加氧乐果对人工瘤胃液pH值没有显著影响(P>0.05)。结果揭示,日粮中添加氧乐果能够使人工瘤胃CP利用率降低,使DM、OM、NDF、ADF和GE的利用率增加。An experiment was conducted to study the effects of omethoate on metabolism regularity of artificial rumen nutrient.DFCCS-Ⅱdual flow continuous culture system was used in the current research.The total test was divided into four stages.Each period had a length of 9 days,consisting of a 4-day adjustment period followed by a 5-day sampling period.Four omethoate levels were designed,0,10,100 and 1000 mg omethoate / kg feed,respectively in each stage.Determination of change law of pH value and NH3-N concentration at different time points and apparent digestibility of DM,OM,CP,NDF,ADF and GE were accomplished in the sampling period in a 4 4 Latin square design.The results are summarized as follows.1） Compared with the control,the NH3-N concentration of treated groups were decreased by 1.97 %,2.12 % and 6.06 %,respectively（P0.05）,and the apparent digestibility of CP decreased by 17.60 %,19.05 % and 13.09 %,respectively（P0.05）.2） Except for CP,the apparent digestibility of DM,OM,NDF,ADF and GE were significantly increased with diets exposured to omethoate（P0.05）.The apparent digestibility of DM were increased by 2.92 %、6.18 % and 4.93 %,respectively,and OM 12.92 %、19.33 % and 16.24 %,respectively,and NDF 4.95 %、6.10 % and 9.38 %,respectively,and ADF 9.00 %、12.40 % and 16.22 %,respectively,and GE 9.00 %、12.40 % and 16.22 %,respectively,compared to the control.3） The pH value was not affected（P0.05）.These results indicated that artificial rumen CP availability was decreased,but DM、OM、NDF、ADF and GE availability were increased with addition of omethoate in diets.

关 键 词：氧乐果 DFCCS-Ⅱ型双外流连续培养系统 营养物质消化率 

分 类 号：S823.8[农业科学—畜牧学]