Effect of Dietary Inositol on Growth, Feed Utilization and Blood Biochemical Parameters for Juvenile Barramundi (Lates calcarifer Bloch)
Shi-Qiang Diao, Zhong Huang, Shui-Sheng Chen, Jin Niu, Zhuo-Jia Li, Xian Ding and Hei-Zhao Lin
DOI : 10.3844/ajabssp.2010.370.375
American Journal of Agricultural and Biological Sciences
Volume 5, Issue 3
Problem statement: The utilization of inositol was detected for growth performance and erum biochemical parameters of juvenile barramundi (Lates calcarifer). Approach: A 56 day feeding trial was conducted to evaluate the effect of inositol on growth, feed utilization and serum biochemical parameters for juvenile barramundi Lates calcarifer (initial size 5.51Â±0.07g). Six experimental fish meal-based isonitrogenous (42% crude protein) and isolipidic (10% crude lipid) diets containing levels of inositol (350, 364, 458, 507, 720, 1050 mg kg-1 diet) were formulated. Results: Fish fed diet containing inositol 507 mg kg-1 diet had the significantly highest weight gain (WG, %) among all the groups (p<0.05) and had significantly lower Feed Conversion Ratio (FCR) than fish fed the diet containing inositol 458 mg kg-1 diet (p<0.05). Survival and Hepatosomatic Index (HSI) were not significantly affected by graded levels of dietary inositol (p>0.05). However, significantly lower Viscerasomatic Index (VSI) was found in fish fed diet without supplemental inositol (p<0.05). Dietary inositol levels did not affect whole body moisture, crude protein and lipid contents (p>0.05). Total protein and triacylglycerol in serum increased with increasing dietary inositol levels up to 507 mg kg-1 diet (p<0.05). The significantly lowest blood urea nitrogen was found in fish fed dietary inositol 458 mg kg-1 diet among all groups except for 720 mg kg-1 diet. Total Cholesterol (TC) of fish fed dietary inositol 507-1050 mg kg-1 diet was higher than those of fish fed dietary inositol 350-458 mg kg-1 diet. Conclusion: Results of the present investigation demonstrated significant improvement of growth and feed utilization of juvenile barramundi can be achieved by inositol supplementation at 507 mg kg-1 diet.
© 2010 Shi-Qiang Diao, Zhong Huang, Shui-Sheng Chen, Jin Niu, Zhuo-Jia Li, Xian Ding and Hei-Zhao Lin. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.