Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Journal of Fisheries and Aquatic Science
  Year: 2016 | Volume: 11 | Issue: 3 | Page No.: 238-243
DOI: 10.3923/jfas.2016.238.243
Total Replacement of Fishmeal by Soybean Meal with or Without Methionine Fortification in the Diets of Nile Tilapia, Oreochromis niloticus
E.K. Ajani, O. Orisasona, B.O. Omitoyin and E.F. Osho

Abstract:
The high cost and competing demand for fish meal in fish diet has made the search for alternative ingredient very expedient. A 12 week feeding trial was conducted with Oreochromis niloticus to determine the effect of replacing fishmeal with soyabean meal and methionine on growth, nutrient utilization, haematology and plasma biochemistry. Four experimental diets (40% crude protein) were formulated, with Partial Soybean Meal (PSM) inclusion, No Soyabean Meal (NSM), Only Soybean Meal (OSM) and soybean meal and methionine. For 84 days, fish were fed at 3% body weight daily to triplicate groups of 15 fish (25.08 g±0.04 g fish–1) that were randomly allocated to twelve hapa suspended in 20 m2 earthen pond. Results showed that Mean Weight Gain (MWG) and increase in length were significantly high (p<0.05) in PSM (22.77 g and 16.90 cm, respectively) and least in NSM (17.54 g and 14.63 cm, respectively). Specific Growth Rate (SGR) values were high in PSM (1.62) and OSM+M (1.55) and least in NSM (1.48). Fish fed OSM+M had the highest Parked Cell Volume (PCV, 20.66%), haemoglobin (Hb, 7.87 g dL–1) and least White Blood Cells (WBC, 3.12x104 mm–3), while NSM gave the least Hb (5.37 g dL–1) and highest WBC (3.92x104 mm–3). Serum enzymes AST (68.0 U L–1) and ALT (46.66 U L–1) were high in OSM+M and least in PSM (47.66 and 28.64 U L–1, respectively). The present study revealed that soybean meal can either be used to partially replace fishmeal or completely replace it with methionine supplementation, when growth, nutrient utilization and health status of O. niloticus are considered.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

E.K. Ajani, O. Orisasona, B.O. Omitoyin and E.F. Osho, 2016. Total Replacement of Fishmeal by Soybean Meal with or Without Methionine Fortification in the Diets of Nile Tilapia, Oreochromis niloticus. Journal of Fisheries and Aquatic Science, 11: 238-243.

DOI: 10.3923/jfas.2016.238.243

URL: https://scialert.net/abstract/?doi=jfas.2016.238.243

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

       

       

Curve Bottom