瘤胃原虫是瘤胃微生物的重要组成部分，它们直接影响饲料中碳水化合物、含氮物质、矿物质和维生素的消化和利用。
The ruminal protozoal is the important component of the ruminal microorganism. They influence the digestion and utilization of carbohydrate, nitrogenous material, mineral and vitamin in feed directly.
添加碳水化合物源后，再向其中加入一种用于家畜青贮饲料发酵的细菌培养物。
After adding the carbohydrate source, a silage bacterial culture used for fermenting silage for cattle was added.
麸皮是小麦加工主要副产物。麸皮中含有丰富的碳水化合物、蛋白质、维生素、矿物质等，广泛用于饲料工业、食品工业、发酵工业。
Because of its rich nutrients such as carbohydrate, protein, vitamins and minerals etc, wheat bran is widely used in feed, food and fermentation industries.
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