FEASIBILITY OF IMPROVING THE NUTRITIVE VALUE OF RAW OR FERMENTED COTTON SEED CAKE USING ENZYME, VITAMIN E AND FERROUS SULPHATE TREATMENTS FOR LAYERS
Atteh, J. O., K. L. Ayorinde, J. K. Joseph, A. O. Olorunsanya, D. F. Apata,
S. A. O. Bolu,* A. A. Annongu, A. A. Adeniji, T. R. Fayeye, A. O. Adeyina
Dept. of Animal production, university of Ilorin, Ilorin, Nigeria
Journal of Applied Agricultural Research 2010, 2: 11-19
© Agricultural Research Council of Nigeria, 2010
A 2 x 3 factorial experiment with Olympia laying hens was conducted to investigate the feasibility of improving the utilization value of raw or fermented Cotton Seed Cake (CSC) using enzyme, vitamin E and ferrous sulphate (FeSo4) treatments over a 4 week – feeding period. Seven isonitrogeneous (18% crude protein) and isoenergetic (2623 cal/kg ME) experimental diets (Table 1) were formulated by incorporating fermented or unfermented (raw) CSC at 15% and treated with a commercial enzyme, vitamin E and Ferrous Sulphate (FeS04) at 0.01, 0.03 and 0.20%, respectively in a 2 x 3 factorial design.
Maize-soybean meal based diet was used as control. The commercial enzyme is Allzyme derived from Aspergillus niger contains 7 enzymes: amylase, beta-glucanase, cellulase, pectinase, phytase, protease and xylanase. There were significant differences (P>0.05) in feed intake, body weight gain and egg weight among treatments methods. However, the laying birds fed the control diet had significantly (P<0.05) higher feed intake, weight gain and egg weight compared to the birds fed the treated diets. Henday egg production was significantly reduced (P<0.05) among dietary treatments (except the enzyme supplemented diet) compared to the control. Layers fed raw CSC + Vit. E and raw CSC + FeSO4 had the lowest (P<0.05) values for packed cell volume and haemoglobin. Treatment differences in red blood cell and white blood cell were not significant (P>0.05). Serum concentration of total protein among dietary treatments was lower (p < 0.05) than the control while albumin and cholesterol values were similar (p > 0.05) for all treatments. Generally, activities of alanine and asparte aminotransferases increased (P<0.05) in CSC dietary treatments compared with the control diet. Interaction between CSC form and treatments had no significant effect on any of the parameters. The data indicated that the treatment methods employed for CSC did not appreciably improve its nutritive value for effective use at 15% level in layer diet.