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Replacement of fish meal protein by surimi by-product protein in the diet of blue gourami Trichogaster trichopterus fingerlings.
- Source :
- Journal of Animal Physiology & Animal Nutrition; Feb2013, Vol. 97 Issue 1, p10-19, 10p, 5 Charts
- Publication Year :
- 2013
-
Abstract
- Based on the nutrient requirement of Trichogaster trichopterus, a fish meal-based basal diet with 350 g/kg diet crude protein and 16.7 MJ/kg energy was formulated, in which the fish meal protein was replaced by surimi by-product protein at 0.0 (control), 12.5, 25, 50, 75 and 100% levels. The formulated diets were fed ad libitum to T. trichopterus fingerlings (4.80 ± 0.03 g) in triplicate groups for 45 days in a closed water system. Eighteen fibre-reinforced plastic tanks with 200 l of water were used for rearing the fish. Weight gain, specific growth rate, feed/gain ratio, protein efficiency ratio, nutrient retention and digestibility (protein and energy) of fish were not affected (p > 0.05) up to 50% fish meal protein replacement level by surimi by-product protein. While whole-body protein content of fish was marginally decreased, the lipid content was increased with increase in surumi by-product incorporation level in the diet. The study results suggest that the fish meal protein, which is scarce and costly nowadays, could be replaced up to 50% by surimi by-product protein in the diet of blue gourami without hampering the growth and nutrient utilization of fish. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09312439
- Volume :
- 97
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Journal of Animal Physiology & Animal Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 85102702
- Full Text :
- https://doi.org/10.1111/j.1439-0396.2011.01237.x