Research Article 
Biochemical and Haematological Response of Clarias gariepinus (Burchell, 1822) Juveniles Fed with Diet Containing Mytilus edulis Shell at Varying Level
Simeon Oluwatoyin Ayoola and I.A. Maduekwe
Journal of Fisheries and Aquatic Science, 2012, 7(6), 468-474.
Abstract
A twelve week feeding trial was carried out to assess the effect of Mytilus edulis shell on the biochemical and haematology parameters of Clarias gariepinus juveniles, in an attempt to substitute Dicalcium Phosphate (DCP) in the preparation of fish diets. Ten fish were randomly distributed in a plastic (High density polyethylene) tank in triplicates and fed 40% crude protein commercial feed. The test fish were fed with feed containing DCP replaced with M. edulis shell at different percentage 0, 25, 50, 75 and 100%. The fish fed with diet 5 which contain 100% Mytilus edulis shell had lower Feed Conversion Ratio (FCR) when compared to the fish fed with the control diet which indicate that C. gariepinus was able to effectively utilize the M. edulis shell in the production of fish flesh. Fish fed with feed containing 100% M. edulis showed a slight decrease in haematological values of Parked Cell Volume (PCV 0.19±0.11), Haemoglobin (Hb 83.36±0.47), White Blood Cell (WBC 8.64±0.55), Mean Corpuscular Volume (MCV 89.90±0.26), Mean Corpuscular Haemoglobin (MCH 39.23±1.96) and are slightly higher in the Red blood cell (RBC 2.13±0.11), Mean Corpuscular Haemoglobin Concentration (MCHC 0.44±0.23), compared to the values of fish fed the control diet, PCV(0.37±0.01), HB (85.76±5.0.12), WBC (9.3±0.02), MCV (128.3±1.7), MCH (52.96±3.5), RBC (1.4±0.10), MCHC (0.41±0.02). It is concluded that using Mytilus edulis shell as a premix in the diet of C. gariepinus showed a slight decrease in the haematological parameters but there was no significant changes (p>0.05) thereby having no negative impact on the health status of the specie. Therefore, direct use of M. edulis shell as a premix to fish feed should be encouraged.
ASCI-ID: 54-337
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