Back to Search
Start Over
Effects of Partial Replacement of Fish Meal Protein by Microalgae on Growth, Feed Intake, and Body Composition of Atlantic Cod.
- Source :
- North American Journal of Aquaculture; Jan2011, Vol. 73 Issue 1, p76-83, 8p
- Publication Year :
- 2011
-
Abstract
- A feeding trial was conducted with juvenile Atlantic cod Gadus morhua (initial mean weight, 40.7 g) in which a combination of dried Nannochloropsis sp. and Isochrysis sp. replaced fish meal protein in isonitrogenous, isocaloric diets. Three experimental diets (55% protein, 16.5% fat; calculated gross energy = 5,328 kcal/kg) were formulated to replace 0, 15, or 30% of dietary fish meal protein. At the conclusion of the 84-d study, no differences in survival, feed conversion ratios, viscerosomatic indices, and n-3 and n-6 fatty acids in the muscle were found among the treatment groups. Feed intake and growth, which were proportional to the level of algal incorporation, were significantly reduced in the algae-fed fish and were probably due to palatability problems. Feed intake improved in the fish fed the diet with 15% fish meal protein replacement as the study progressed, but hepatosomatic indices indicate that those fed the diet with 30% replacement were approaching starvation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15222055
- Volume :
- 73
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- North American Journal of Aquaculture
- Publication Type :
- Academic Journal
- Accession number :
- 61205011
- Full Text :
- https://doi.org/10.1080/15222055.2010.549030