[1]
Adefila Olushola Olubunmi, Department of Zoology, University of Ilorin, Ilorin, Nigeria.
[2]
Nzeh Gladys Chioma, Department of Zoology, University of Ilorin, Ilorin, Nigeria.
Fish culture production in Nigeria is low due to high cost of conventional fish feed. The cost of fishmeal, one of the components of feed ingredients, is high and it has necessitated the search for a cheaper source of protein that will promote growth. The growth performance of fingerlings of Clarias gariepinus (Burchell) to diets with varying levels of inclusion of Aspatharia sinuata (L), a freshwater bivalve, was studied. Five diets were formulated designated as treatments A, B, C, D and E containing 10%, 20%, 30%, 40% and 50% A. sinuata. The control diet contained 0% A. sinuata. The fish were grown for a period of 110 days in concrete tanks. The highest haemoglobin concentration (Hb) of 10.43±1.29g/dL in male species was observed in group fed with 40% inclusion of A. sinuata meal (diet D) while the lowest Hb (7.43±0.81g/dL) was observed in group fed with 50% A. sinuatameal (diets E). In the female species the highest Hb (9.50±0.84g/dL) was observed in diet B, fed with 20% A. sinuata meal while the lowest Hb (6.50±0.42g/dL) was observed in diet E. The highest red blood cell count (RBC) of the male fish species (2.94±0.34 x 106/µL) was observed in group fed with 40% inclusion of A. sinuata meal (diet D) while the lowest RBC (2.09±0.15 x 106/µL) was observed in group fed with 50% A. sinuate meal (diets E). In the female species the highest RBC (2.52±0.31 x 106/µL) was observed in diet B, fed with 20% inclusion of A. sinuata meal while the lowest RBC (1.87±0.12 x106/µL) was observed in group fed with 50% inclusion of A. sinuata meal (diet E). Statistical analysis of RBC showed that there was no significant difference (p > 0.05) between the male and female species in all the diet groups. The results revealed that inclusion of A. sinuata meal from 20% to 40% in the diet of C. gariepinus promoted growth. This indicates that inclusion of up to 40% of Aspatharia meal alongside the ingredients used in this study could be used for pond production of C. gariepinus. Feeding C. gariepinus with formulated feeds of 40% inclusion of A. sinuata meal alongside the other ingredients is cost effective and profit oriented.
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