Effects of extruded diets with different energy levels on fat Body composition and profile of fatty acids of Rainbow trout (Oncorhynchus mykiss) fed extruded diets with different energy levels
Journal Title: Journal of Research in Biology - Year 2012, Vol 2, Issue 7
Abstract
We have evaluated the influence of energy level on the ratio of digestible protein and digestible energy on the body composition and fatty acid profile composition of fillet in rainbow trout. Two extruted diets with different energy levels were used. The comparison of the two foods with different formulations is perfomed in isoenergetic conditions. Following this study, two diets were formulated: the extruded diet A with 41,4% crude protein, 27,4% lipids and 20,4% carbohydrate while the extruded food B with 39.7% CP, 24,4% fat and 15,7 carbohydrates with digestible energy of 21.32 Mj kg-1 and 19.32 Mj kg-1 respectively. The initial average weight of the trouts was 100 g from the same batch of eggs which were divided randomly into six fiberglass conical tanks at open circuit. The diet was assigned to six tanks of 50 fish each with three replicates for each diet and the experiment was conducted for 127 days. The ratio DP/DE of body composition influenced by diet and profile of fatty acid and their distribution in the fillet of fish was calculated. The test focused on the ventral fillet of fish. Our results demonstrated that the total fatty acids expressed in g/100g wet matter (WM) reveal significant variations (p<0.05). The fatty acid composition of the fish muscle varied with the high level fat for the low ratio DP/DE, and the best ratio n3/n6 (p<0.05) is found out. The lipid content increased with increasing dietary lipid levels and depended on the protein content in feeds and the ratio DP / DE. Fatty acid (FA) composition of the muscle reflected the fat levels in the diet
Authors and Affiliations
Aba Mustapha, Belghyti Driss, Benabid Mohammed
Keywords
Related Articles
- EP ID EP566230
- DOI -
- Views 63
- Downloads 0
Survey of nature and extent of damage caused by bird pest to pearl millet crop in Patan District (North Gujarat)
Pearl millet is the main crop of Patan district of Gujarat state. It is grown in two seasons viz. kharif and summer. This research was conducted during 2005 and 2006 at Hansapur village of Patan district. Two varieties v...
Microbiological control agents for cooling systems in hydroelectric power plants
Many hydroelectric power plants and industries use chemicals to minimize problems caused by clogging and corrosion consequence from accumulated organic material in cooling systems. The chemicals used to avoid these proce...
Effects of extruded diets with different energy levels on fat Body composition and profile of fatty acids of Rainbow trout (Oncorhynchus mykiss) fed extruded diets with different energy levels
We have evaluated the influence of energy level on the ratio of digestible protein and digestible energy on the body composition and fatty acid profile composition of fillet in rainbow trout. Two extruted diets with diff...
Puntius nigronotus, a new fish species (cypriniformes; cyprinidae) from Kerala, India
Puntius nigronotus, a new fish species of the family Cyprinidae, is described from Mananthavady River of Kerala, India. It is distinguished from its congeners by the following combination of characters: body deeper, maxi...
Vermiwash mixed diet effect on growth of Oreochromis mossambicus (Tilapia)
Oreochromis mossambicusfries were collected from Kullursanthai reservoir near Virudhunagar. They were acclimatized to the lab conditions at 29±1ºC for one week. O. mossambicus receiving CFF (Control Fish Feed) diet exhib...