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榨油后的棉籽饼、菜饼含有丰富的营养物质,据分析测定,此两种饼中含粗蛋白质30％—40％左右,粗脂肪5％—10％,粗纤维12％—20％,灰分6％,无氮浸出物30％。而且棉籽饼、菜饼在我国数量较大,分布较广,是较为理想的养鱼饲料。但棉籽饼中含0.7％—1.5％的棉酚,棉酚是细胞性、血管性、神经性毒素,一旦进入鱼体,鱼类易得肠炎病;进入血液,容易引起溶血即红细胞破裂,同时还影响鱼类的性腺发育。菜饼含恶唑烷硫酮(OFT)、硫氰酸酯(TC)、异硫氰酸酯(IFC)等有毒物质。如果不进行去毒或投喂不得法,就会使这些有毒物质在鱼
Oilseed cottonseed cake, vegetable cake rich in nutrients, according to the analysis of determination, the two kinds of cake containing crude protein 30% -40%, 5% -10% of crude fat, crude fiber 12% -20% Ash 6%, nitrogen-free extract 30%. And cottonseed cake, cake in our country a large number of larger, more widely distributed, is the ideal of fish feed. However, cottonseed cake contains 0.7% -1.5% gossypol, gossypol is a cellular, vascular, neurotoxin, once into the fish, fish prone to enteritis; into the blood, it is easy to cause hemolysis that rupture of red blood cells, at the same time It also affects gonadal development in fish. Vegetable cake containing oxazolidine thione (OFT), thiocyanate (TC), isothiocyanate (IFC) and other toxic substances. If you do not go detoxification or feeding law, it will make these toxic substances in the fish