||Complete replacement of fish meal by unconventional proteins sources in diet of Oreochromis niloticus (L., 1758) fingerlings: growth performance, feed utilization and body composition
DJISSOU Arnauld Sedjro Martin ,
VODOUNNOU D.S.J.V. ,
TOSSAVI COMLAN EPHREM ,
Toguyeni Aboubacar ,
FIOGBE EMILE DIDIER ,
||International Journal of Fisheries and Aquatic Studies
||For a period of 42 days, a total replacement of the fish meal by a mixture of unconventional sources of
proteins (Azolla filiculoides, Dialium guineense leaf, brewers' yeast and maggot) was carried out for the
of Oreochromis niloticus fingerlings. Five experimental diets isoproteic (34.6 ± 0.5%) reference diet and
four test diets (A1 to A4) were used to feed O. niloticus fingerlings of average weight. At the end, the
final mean weight (FW) and the daily weight gain (DWG) in the test diets (13.66 to 14.84g) were lower
than those obtained by reference diet (18.45g) with P<0.05 The same observation was made with the
SGR (1.17-1.33 vs 1.83% day-1) and PI (4.24-4.85 vs 5.80) in diets. The survival rate was not affected by
the experimental diets, in the same way for the FCR and the PER, except the diet A1 (P<0.05).
Productive Protein Values (PPV) were between fin the reference diet A0 and 2 (0.39 vs 0.35
respectively) re are no significant difference with P>0.05 Threonine appears with methionine like factors
limiting in test diets.
Locally available unconventional proteins sources can totally replace fish meal without compromising
growth performance, feed utilization and carcass traits but a close attention must be paid to methionine
and threonine in order to satisfy nutrients requirements of O. niloticus fingerlings.
||Unconventional, isoproteic, limiting factor
||242 - 247