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在约300种养殖鱼类中,仅50种有营养学数据,不到10种有完全的营养学数据。在饲料蛋白源中,鱼粉是鲑鳟鱼类饲料的主要蛋白源,蛋白质含量为60%～80%。肉骨粉一般蛋白质含量为50%左右,赖氨酸含量较鱼粉低。肉骨粉灰分含量可到30%,限制了其在鱼类饲料中的应用。一般在鲑鳟鱼类饲料中用量不超过10%,温水性鱼类饲料中用量不超过15%。血粉蛋白质含量为80%～86%,是很好的赖氨酸来源,但缺乏蛋氨酸。血粉的适口性较差,在鲑鳟饲料中用量不超过10%,温水性鱼类饲料中不超过5%。肉骨-血粉混合物的营养成分与鱼粉接近,可完全替代沟鲶饲料中的鱼粉。鸡肉粉蛋白质含量为60%～70%,可替代鲑鳟饲料中10%的鱼粉及温水性鱼类饲料中50%的蛋白质。水解羽毛粉蛋白质含量约为85%,但消化率较低。可替代鲑鳟及温水性鱼类饲料中10%的蛋白质。鸡肉粉-羽毛粉混合物可替代虹鳟饲料中50%的鱼粉。豆粕可替代虹鳟饲料中50%的鱼粉蛋白,是温水性鱼类饲料的主要蛋白源。豆粕中存在一些抗营养因子。一般豆油提取过程可以分解大部分抗营养因子。一些报道表明进一步热处理可以提高豆粕的营养价值。经过热处理的全脂豆粉,如果添加蛋氨酸及赖氨酸,可以替代虹鳟及鲤鱼饲料中50%～75%的鱼粉。棉粕对鱼的适口性好,但缺少赖氨酸。除非添加赖氨酸,棉粕在温
Of about 300 farmed fish species, only 50 have nutritional data and less than 10 have complete nutritional data. In feed protein sources, fish meal is the main protein source for salmon trout feeds with protein content of 60% to 80%. Meat and bone meal generally has a protein content of about 50% and a lysine content lower than that of fishmeal. Meat bone meal ash content up to 30%, limiting its application in fish feed. The general amount of feed in salmon trout does not exceed 10%, the amount of warm water fish feed does not exceed 15%. Blood protein content of 80% to 86%, is a good source of lysine, but the lack of methionine. Poor palatability of blood meal, the amount of feed in salmon does not exceed 10%, warm water fish feed does not exceed 5%. The nutritional content of the meat-bone-blood meal mixture is close to that of fishmeal, which completely replaces the fishmeal in the ditch catfish feed. Chicken meal protein content of 60% to 70%, can replace salmon trout feed 10% of fish meal and warm water fish feed 50% of the protein. Hydrolyzed feather meal protein content of about 85%, but lower digestibility. Can replace salmon and warm water fish feed 10% of the protein. Chicken meal - feather meal mix replaces rainbow trout feed 50% fish meal. Soybean meal can replace 50% of the fish meal protein in rainbow trout feed, which is the main protein source of warm water fish feed. There are some anti-nutritional factors in soybean meal. General soybean oil extraction process can decompose most anti-nutritional factors. Some reports indicate that further heat treatment can improve the nutritional value of soybean meal. After heat treatment of whole bean flour, if the addition of methionine and lysine, you can replace rainbow trout and carp feed 50% to 75% of the fish meal. Cottonseed meal on the palatability of fish, but the lack of lysine. Unless lysine is added, cottonseed meal is warm