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本文主要论述用钙、磷含量不同的试验饵料投喂鲤鱼,研究鲤鱼消化道对饵料中磷的吸收率。磷是一切生物所必需的无机元素之一。饵料则是鱼体获得磷的唯一外源,这一点已被证实,如低磷饵料引起鲤鱼、虹鳟、大马哈鱼、斑点叉尾鮰、红海乌鲂生长缓慢,骨骼中钙、磷含量降低。说明了鱼类栖息在缺乏含磷饵料的环境中,是不能吸收磷的。饵料中的磷,一般以无机磷酸盐或有机磷化合物的形式存在。而后一种形式必须在消化道中水解成无机磷酸盐后再被吸收。鱼粉及谷类中的磷,不能被鲤鱼有效的吸收。加入可溶性无机磷酸盐的饵料,能促使鱼体
This paper mainly discusses the use of different dietary calcium and phosphorus diet fed carp, carp digestive tract of phosphorus absorption of food. Phosphorus is one of the inorganic elements necessary for all living things. It has been confirmed that bait is the only exogenous source of phosphorus in fish, such as carp, rainbow trout, salmon, channel catfish, red catfish, slow-growing clams, and reduced calcium and phosphorus in bones. Explain the fish habitat in the absence of phosphorus feed environment, can not absorb phosphorus. Phosphorus in feed is usually in the form of inorganic phosphates or organophosphorus compounds. Then a form must be digested in the hydrolysis of inorganic phosphate and then be absorbed. Phosphorus in fishmeal and grains can not be effectively absorbed by carps. Add soluble inorganic phosphate bait, can promote the fish