This study was designed to evaluate spirulina
wastes and live housefly maggot as partial replacement for fishmeal in the
diets of Nile Tilapia. Four isonitrogenous (35%) and isocaloric (17-18 KJ.g-1)
diets were evaluated: commercial diet Skretting SK, control diet CD (30% fishmeal),
and two others diets (SW and LM), corresponding to spirulina wastes and live
housefly maggot inclusion
respectively. Diets were hand-fed thrice daily to triplicate groups of
fish to apparent satiation. After 12 weeks, the final weight and feed intake of
fish fed diet CD and SK did not differ from those fed diets LM, but were higher
than those fed SW diet (p<0.05).
However, inclusion of SW had no effect on feed utilization. No significant
differences were found in survival, feed conversion ratio, protein efficiency
ratio and condition factor among the treatments (p>0.05). Whole-body protein contents were similar in all groups,
whereas the lipid content was lower in SW group. It was concluded that a 62.56
% fishmeal protein could be replaced by live maggot in the diet of Nile Tilapia without negative effects on growth performances and quality of fish
Spirulina wastes, Live maggots, Fishmeal, Growth, Nile tilapia
|Journal Section||Research Articles|
|Supporting Institution||Ministry of Higher Education and Scientific Research, Benin|
|Thanks||We are grateful to Mr. Appolinaire Effio, technician at the laboratory of zootechnics, Faculty of Agricultural Sciences, University of Abomey-Calavi for his assistance during the biochemical analysis. Mr Roger K. ADOUNKPE, Head of the Spirulina Production Unit of the Regional Center for Development and Health (Pahou, Benin) for the supply of spirulina by-products.|
|Publication Date||January 1, 2020|
|Submission Date||October 25, 2019|
|Acceptance Date||December 15, 2019|
|Published in Issue||Year 2020Volume: 3 Issue: 1|
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