【作者】 冯鹏； 孙启忠；

【Author】 FENG Peng;SUN Qi-Zhong;Institute of Grassland Research,CAAS;

【机构】 中国农业科学院草原研究所；

【摘要】 科多8号青贮专用型玉米与沙打旺以1:0,2:13,1:1,1:2,0:1比例混贮,测定各处理的营养成分及其有毒有害成分,结果表明:随沙打旺混贮比例增加,各处理粗蛋白含量呈递增趋势,NDF、ADF含量呈递减趋势;玉米与沙打旺混贮可以提高青贮饲料的氨基酸含量,混贮处理蛋氨酸含量分别为0.0294μg/kg,0.0351μg/kg,0.0254μg/kg,均高于沙打旺单贮蛋氨酸含量,赖氨酸含量较玉米单贮分别提高4.5%,57.2%,45.0%;各处理青贮料较青贮原料黄曲霉毒素含量增加,玉米赤霉烯酮、亚硝酸盐、硝酸盐、3-NPA含量减少;青贮对铅、砷、铬无机元素含量影响不显著:1/2玉米+1/2沙打旺混贮处理营养成分以及氨基酸含量较高,且有毒有害成分含量较低,是为理想的混贮处理。更多还原

【Abstract】 Special silage corn of Keduo 8 and Astragalus adsurgens Pall.were mixed and silaged at the ratio of 1:0,2:1,1:1,1:2 and 0:1 respectively,and the nutrient and poisonous substances in all treatments were determined.The result showed that with the proportion of Astragalus adsurgens Pall.increasing,the crude protein content would increase as well,while the neutral detergent fiber and acid detergent fiber had a descending trend.The mixed silage could raise the amino acid content of the silage.The methionine content of three mixed silage treatments was 0.294μg/kg,0.0351μg/kg,0.0254μg/kg respectively,which was all higher than that of single Astragalus adsurgens Pall.silage(P<0.05),the lysine was 4.5%,57.2%,45.0%higher than that of single corn silage(P<0.05).The aflatoxin of treated silages were higher than those of raw silage respectively,while the zearalenone,nitrite,nitrate,3-Nitropropionia acid content were lower.The influence of silage on inorganic elements like plumbum,arsenic,chromium was not significant.The nutrient and amino acid content of the mixed silage of 1/2 corn and 1/2 Astragalus adsurgens Pall.were relatively high and less poisonous elements were contained,which was the ideal mixed silage treatment.更多还原