中文摘要：本研究测试了两种添加剂（细菌菌剂和纤维酶）对玉米青贮饲料的发酵特性、体外消化率、霉菌计数及黄曲霉毒素（B1、B2、G1和G2）含量的影响。结果发现两种添加剂均提高了乳酸含量及体外干物质消化率(P < 0.05)，减少了氨氮含量(P < 0.05)。纤维酶（E）和菌剂+纤维酶（B+E）都减少了中性洗涤纤维含量，并提高了粗蛋白含量、中性洗涤纤维和粗蛋白的体外消化率(P < 0.05)。在整个空气暴露阶段(0、1、5和10天)，处理的青贮中黄曲霉毒素含量及霉菌计数均低于未处理(P < 0.05)。此外，B处理的青贮空气暴露0天及B+E处理的整个空气暴露阶段，均未检测到黄曲霉毒素。
外文摘要：Two additives (bacterial inoculants and fibrolytic enzymes) were tested for their effects on fermentation characteristics, in vitro digestibility, mold counts and aflatoxin (B1, B2, G1 and G2) content in corn silages. Whole-plant corn was harvested with one-half milk line stage and ensiled after the following treatments: (i) untreated (CON); (ii) bacterial inoculants at 105 CFU g−1 of fresh forage (B); (iii) fibrolytic enzymes at 100 U g−1 of fresh forage (E); and (iv) mixture of bacterial inoculants and enzymes at 105 CFU g−1 and 100 U g−1 of fresh forage, respectively (B+E). All the additives increased the lactic acid content and in vitro dry matter digestibility (P < 0.05), decreased ammonia nitrogen content (P < 0.05). E and B+E decreased the neutral detergent fiber content and increased the crude protein, in vitro digestibility of neutral detergent fiber and crude protein (P < 0.05). Aflatoxins content and mold counts for treated silage were lower than untreated silage (P < 0.05) throughout the air exposure stages (0, 1, 5, and 10 days). Additionally, the aflatoxins were not detected in B treated silage after 0 day exposure to air and in B+E throughout the air exposure stages.
外文关键词：Aflatoxin；bacteria inoculants；fibrolytic enzymes；in vitro digestibility
作者：Ying, HL；Borjigin, N；Yu, Z
作者单位：China Agr Univ
期刊名称：GRASSLAND SCIENCE
期刊影响因子：0.82
出版年份：2017
出版刊次：2
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