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Use of mixed feeding schedules in fish culture: performance of common carp, Cyprinus carpio L., on plant and animal protein based diets
Author(s) -
Nandeesha M C,
Silva S S,
Krishna Murthy D
Publication year - 1995
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1995.tb00898.x
Subject(s) - biology , cyprinus , fish meal , carp , flesh , plant protein , zoology , feed conversion ratio , common carp , protein efficiency ratio , fish <actinopterygii> , food science , meal , body weight , fishery , endocrinology
A 90‐day growth trial was conducted with common carp, Cyprinus carpio L., to test the suitability of mixed feeding using a plant‐based low‐protein diet (16% ‐diet A), and two fish‐meal‐based diets of 26% protein (diet B) and 31% protein (diet C). Three mixed feeding schedules were tested: 1A/2B, 2A/2B and 2A/2C; numerals refer to number of days each diet (A, B or C) was offered continuously. Fish fed diets A, B or C continuously served as controls. Fish grown on diet A grew the least, while there was no significant difference between those fed on diets B or C. Of the three mixed schedules, 2A/2C produced the highest growth, which was better than that on control diets B or C. Specific growth rate (%) and food conversion ratio and protein retention were found to be good for all mixed feeding schedules. The plant protein diet resulted in poor‐quality flesh as indicated by carcass composition. The study supports the view that fish can be fed alternately with animal‐ and plant‐protein‐based diets of varied protein levels. This practice would help to reduce protein input, and would contribute to the efficient utilization of low‐quality, plant‐protein‐based diets.