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饲料中的粗灰分指的是饲料经过高温灼烧之后的残留物,这些残留物主要是无机盐或者氧化物等矿物元素,也包括一些混入饲料中的泥土。这些矿物元素有一些四营养性物质,但是有一些是有毒物质。故此就需要对饲料中的粗灰分进行严格的控制,以促使饲养能够达到最佳效益。
Crude ash in the feed refers to the residue of the feed after it has been subjected to high temperatures. These residues are mainly mineral elements such as inorganic salts or oxides, and also include some soil mixed into the feed. Some of these mineral elements have four nutritious substances, but some are toxic. Therefore, strict control of the crude ash content in the feed is required in order to achieve the best benefit from feeding.