Feed that is high in digestible nutrients, low in water, small in volume, and low in crude fiber. It is divided into plant-based and animal-based. The former includes grains, oil cakes, beans, bran, and other agricultural by-products, while the latter includes milk and its by-products, meat and its by-products such as meat meal and blood meal, fish meal, and other marine by-products. It also includes dried root vegetables such as potatoes. Chickens and pigs are mostly raised on concentrated feed, but cows and horses are mainly fed roughage, with concentrated feed only to be supplemented. However, in recent years, in order to improve production, or for livestock farmers who are not able to produce roughage themselves, concentrated feed is the main source of feed. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
可消化養分が高く,水分が少く,容積が小さくて粗繊維含量の少い飼料。植物性のものと動物性のものに分けられる。前者には穀物類,油かす類,豆類,ぬか類,その他の農産副産物などがあり,後者には乳およびその副産物,肉やその副産物の肉粉や血粉,魚かすその他の水産副産物などがある。またいもなど根菜類の乾燥したものも含まれる。鶏や豚はほとんど濃厚飼料により飼養されるが,牛や馬などは粗飼料が主体となり,濃厚飼料は補給される程度である。しかし最近は生産向上のため,あるいは粗飼料の自給力のない畜産農家においては,濃厚飼料主体の経営が行われている。
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