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筛选优良发酵菌剂对桑叶饲料进行人工发酵,增加桑叶饲料中的营养物质含量,可提高桑叶作为畜禽水产饲料的饲用价值。以分属于芽孢杆菌、乳酸菌、酵母菌、霉菌的18个菌株分别对桑叶进行发酵处理,测定发酵桑叶饲料中粗蛋白质、粗脂肪、粗纤维等营养成分的含量变化,结果显示:有6个菌株发酵后的桑叶饲料中,粗蛋白质含量极显著增加(P<0.001),且以康宁木霉(Trichoderma koningii)、产脘假丝酵母(Candida utilis)、地衣芽孢杆菌(Bacillus licheniformis)发酵桑叶饲料的增幅较大;有16个菌株发酵后的桑叶饲料中,粗纤维含量极显著降低(P<0.001),且以蜡状芽孢杆菌(Bacillus cereus)、地衣芽孢杆菌、热带假丝酵母(Candida tropicalis)发酵桑叶饲料的降幅较大;有10个菌株发酵后的桑叶饲料中,粗脂肪含量极显著增加(P<0.001),且以产脘假丝酵母、植物乳杆菌(Lactobacillus plantarum)、布氏乳杆菌(Lactobacillus buchneri)发酵桑叶饲料的增幅较大。生产上可选用不同的发酵菌剂对桑叶进行发酵处理,提高桑叶饲料中的粗蛋白质、粗脂肪含量和降低粗纤维的含量,以满足对不同畜禽水产动物饲养的需求。
Screening fine fermentation fungi on mulberry leaf feed artificial fermentation, increase the content of nutrients in mulberry leaves feed, mulberry leaves can improve the feed value of livestock and poultry aquaculture feed. The results showed that the contents of crude protein, crude fat, crude fiber and other nutrients in the feed of mulberry leaves were measured by fermentation of mulberry leaves with 18 strains belonging to Bacillus, lactic acid bacteria, yeast and mold respectively. The results showed that there were 6 The contents of crude protein in the mulberry leaves after fermenting were significantly increased (P <0.001), and were fermented in Trichoderma koningii, Candida utilis, Bacillus licheniformis The feed of mulberry leaves increased greatly. The contents of crude fiber in the mulberry leaves after fermenting by 16 strains were significantly decreased (P <0.001), and Bacillus cereus, Bacillus licheniformis, Fermentation of mulberry leaves by Candida tropicalis decreased significantly. Crude fat content increased significantly (P <0.001) in mulberry leaves and leaves of 10 strains after fermenting, and Candida tropicalis and Lactobacillus plantarum Lactobacillus plantarum), Lactobacillus buchneri fermentation mulberry leaf feed increased significantly. The production of different fermentation agents can be used to ferment mulberry leaves to improve the mulberry leaf feed crude protein, crude fat content and reduce the crude fiber content to meet the needs of different livestock and poultry aquaculture animals.