Effects of Dietary Olive Oil (Olea europaea) Supplementation on Growth Performance and Haematological Parameters of Juvenile Clarias Gariepinus
Muhammad, Abubakar *
Department of Biology, Federal University of Agriculture Zuru, Kebbi State, Nigeria.
Obaroh, Israel Olusegun
Department of Biological and Environmental Sciences, School of Natural and Applied Science, Kampala International University, Kampala, Uganda.
Abubakar, Bashir
Department of Biology, Federal University of Agriculture Zuru, Kebbi State, Nigeria.
Hassan, Yusuf Rambo
Department of Biology, Federal University of Agriculture Zuru, Kebbi State, Nigeria.
Mato, Markus David
Department of Animal and Environmental Biology, Abdullahi Fodio University of Science and Technology, Aliero, Nigeria.
Muhammad, Abdulbasid
Department of Biology, Federal University of Agriculture Zuru, Kebbi State, Nigeria.
Muhammad, Surajo
Department of Biology, Federal University of Agriculture Zuru, Kebbi State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
This study assessed the impacts of dietary Olea europaea (olive) oil on the growth performance and haematological parameters of juvenile Clarias gariepinus. Five dietary treatments with three replicates each were randomly assigned to 150 juveniles whose mean weight ranged from 10.22 to 11.78 g. The juveniles were fed experimental diets for 56 days. A commercial diet (control), a basal diet devoid of olive oil, and basal diets supplemented with 10 g/kg, 20 g/kg, and 30 g/kg of olive oil comprised the treatments. One-way ANOVA was used to examine growth performance and haematological parameters. Growth indices and some haematological parameters showed significant differences (P < 0.05) between treatments. Fish fed the commercial diet performed better in terms of growth, while moderate level of olive oil inclusion enhanced certain physiological indicators, indicating that the diet significantly influenced their overall health and growth performance compared to other treatments. The findings therefore demonstrate that dietary supplementation of olive oil affects growth performance and haematological parameters of C. gariepinus with moderate levels of inclusion exhibiting positive physiological outcomes. Olive oil can thus be a promising source of natural lipids in aquafeeds and an alternative to synthetic growth promoters in aquaculture nutrition.
Keywords: Dietary, growth performance, haematological indices, Olea europaea, Clarias gariepinus