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维生素是在动物机体内生活活动不可缺少的物质。它对调节和影响动物机体的代谢机能、生长和发育,增进对传染病的抵抗力,以及对动物获得健康的后代均起着重要的作用。因此,对维生素这一物质应有足够的认识。在家畜饲养过程中,有些动物自身可以合成一部分维生素外,大多数维生素都必须由饲料中供给。由饲料中缺乏维生素所引起的疾病,这种疾病称为维生素缺乏病。
Vitamins are indispensable for living activities in the animal body. It plays an important role in regulating and influencing the metabolic function, growth and development of the animal body, increasing its resistance to infectious diseases, and in obtaining healthy offspring for animals. Therefore, the substance of vitamins should have sufficient knowledge. In livestock farming, some animals themselves can synthesize a portion of the vitamin, most of which must be supplied by the feed. The disease caused by the lack of vitamins in the diet is called vitamin deficiency.