魚の摂餌量と増重量の関係-I : 日摂餌量が最大になる投餌回数

概要

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When fishes are fed daily, the frequency of feeding which maximize the daily ration was examined in six species of fishes, namely, jack mackerel, Trachurus japonicus, goby, Chasmichthys gulosos, rockfish, Sebastes inermis, yakataisaki, Therapon jarbua, rainbow trout, Salmo gairdnerii irideus, and goldfish, Carassius auratus. The fishes were fed from 1 to 12 times a day for 10 days, seeing that at each feeding the fish reached satiation, and the daily rations were recorded. The results obtained are summarized as follows: The following relationship appeared to exist between the frequency of feeding per day (T) and the daily rate of feeding (f); f=C(1-e-mT) where C is the maximum daily rate of feeding and m is a constant which represents the rate of approach of the daily rate of feeding to its maximum. The value of m is determined by the ratio of the satiation amount at one feeding a day to the maximum daily ration. The daily ration seemed to be nearly maximized with 2 feedings for goby and yakataisaki, with 3 for rockfish and rainbow trout, with 4 for jack mackerel, and with 12 for goldfish (Fig. 1).
公益社団法人日本水産学会の論文