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Evaluation of dietary protein requirement for the growth performance of minor carp, Cirrhinus reba (Hamilton, 1822) fingerlings
Author(s) -
Yadav Ajay Kumar,
Mandal Sagar Chandra,
Patel Arun Bhai,
Maurya Pradip Kumar
Publication year - 2019
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/are.14292
Subject(s) - biology , feed conversion ratio , zoology , protein efficiency ratio , casein , carp , cyprinus , weight gain , protein requirement , net protein utilization , fish <actinopterygii> , body weight , food science , fishery , endocrinology
An experiment was designed to evaluate the requirement of dietary protein for Reba carp, Cirrhinus reba fingerlings using semi‐purified diet. Five isocaloric diets were prepared containing 20%, 25%, 30%, 35% and 40% level of protein using casein, gelatin as a major protein source. The experiment was conducted for 105 days in triplicates to evaluate the growth, survival, feed utilization, carcass composition of C. reba . Mean weight gain was highest ( p < .05) in T3. Specific growth rate was highest in T3 and lowest in T1. Similarly, significantly ( p < .05) highest net fish yield were recorded in T3. No significant difference was recorded in survivability. Feed conversion ratio, protein efficiency ratio, feed conversion efficiency and protein conversion efficiency were significantly ( p < .05) higher for T3 compared with other treatments. Highest carcass protein and lipid values were recorded in T3. So, conclusion can be drawn that 30% crude protein is optimum for overall performance. Furthermore, broken‐line analysis for specific growth rate, final biomass and net fish yield indicated that dietary protein level of 28.148 to 28.253% is optimum for the best growth performance of fingerling C. reba .