复合益生菌固态发酵断奶仔猪配合饲料工艺参数的优化及品质评定

Optimization of Technological Parameters and Quality Evaluation of Compound Feed for Weaned Piglets by Solid-state Fermentation with Probiotics

利用复合益生菌联合发酵技术对断奶仔猪配合饲料进行固态厌氧发酵,通过不同的工艺参数:接菌量、发酵温度、发酵水分和发酵时间,探讨对发酵饲料品质的影响。结果显示:不同的参数对配合饲料品质有明显影响。采用5.0%接种量、35%发酵水分、37℃发酵温度和72 h发酵时间,可有效提高配合饲料中粗蛋白、乳酸、游离氨基酸的含量和益生菌数量,降低发酵饲料霉菌数量,改善发酵饲料风味和品质,防止饲料霉变和虫蛀。发酵后的配合饲料颜色金黄、气味芳香、质地松散而不黏连。

Solid anaerobic fermentation of compound feed for weaned piglets was carried out by compound probiotic combined fermentation technology,and the effects on the quality of fermented feed were explored through different process parameters:inoculation amount,fermentation temperature,fermentation moisture and fermentation time.The results showed that different parameters had a significant impact on the quality of compound feed.The use of 5.0%inoculation amount,35%fermentation moisture,37℃fermentation temperature and 72 h fermentation time could effectively increase the content of crude protein,lactic acid,free amino acids and the number of probiotics in compound feed,reduce the number of molds in fermented feed,improve the flavor and quality of fermented feed,and prevent feed mildew and insect moth.After fermentation,the compound feed was golden in color,aromatic in smell,loose in texture and not sticky.