魚類の蛋白質栄養に関する研究-3-コイにおける飼料蛋白質の見かけの消化率および真の消化率

概要

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The purpose of the present study is to elucidate the relationship between the amount of nitrogen ingested by carp and the apparent digestibility or the true digestibility of dietary proteins. The method of fecal collection and quantitative determination of metabolic fecal nitrogen excretion of carp reported in the previous paper was adopted. The true digestibility of dietary proteins manifested no appreciable change regardless of the nitrogen intake of the fish, while the apparent digestibility changed at levels of low nitrogen intake. The difference between true digestibility and apparent digestibility was noticeable at levels of nitrogen intake below 100mg per 100g of weight per day. The true digestibilities of dietary proteins determined in carp showed high values exceeding 90% in all samples.
日本水産學會の論文