Abstract.Oreochromis niloticus(L.) young of two size groups, 170‐213 mg (±7) and 1‐017‐1‐072 g (±0‐04), were reared under seven different dietary schedules for 70 days. The two control diets had 18 and 30 protein content; the other five schedules were randomly determined, where the feeding of the low‐protein diet alternated with the high‐protein diet, for differing periods. On the basis of the observed rate of growth, food conversion ratio, protein efficiency ratio and percentage protein retained in both size groups of youngO. nitoticus, those reared on a dietary schedule of 2A/3B performed best followed by those reared on schedule 1A/3B; where the numerical value refers to the number of days a particular diet was offered continuously. The feed cost‐saving factor, by adopting alternate feeding schedules as compared to presenting a high‐protein diet continuously, is show
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