现时在泰国内地随着市场供求递增,原来的农法养鱼正在被工业化养鱼所取代。为了达到单位面积的密养高产,单靠天然饵料是远远不能满足鱼类养殖的需要的。因此,需要增投配合饵料。但配合饵料所含的营养成分往往不够全面和丰富。特别是缺乏某些鱼类生长发育在生理学上特别需要的元素,致使鱼类生长发育不正常,甚至发生病变、死亡。这些情况在鱼类的生态、生活状态和外形体态上都有所表现,而且不同的病因往往出现相同或相似的表现。例如:有的鱼类 At present, as the market supply and demand increase in the mainland of Thailand, the original farming-oriented fish farming is being replaced by industrialized fish farming. In order to achieve the unit area of ​​high yield, rely on natural food alone is far from meeting the needs of fish farming. Therefore, the need for increased investment with bait. But with the nutrients contained in the feed is often not comprehensive enough and rich. In particular, the lack of certain physiologically demanding fish growth and development elements, resulting in abnormal growth and development of fish, and even lesions and death. These situations are manifested in the ecology, living status and appearance of fish, and different etiologies often show the same or similar manifestations. For example: some fish