M.J. Deering, D.R. Fielder, D.R. Hewitt-1997
Aquaculture, 151: 131-141
Abstract:
The effects of feeding different lipids on the growth and fatty acid
composition of juvenile leader prawns, Penaeus monodon, were
evaluated using pelleted diets. Seven experimental diets were
formulated using 4% canola oil, 4% cod liver oil, 4% lard, 4% linseed
oil, 4% medium chain triglyceride (MCT) oil, 4% soy bean oil and
2% cod liver oil + 2% MCT oil. The diets were fed to triplicate
groups of ten prawns (1.49 +/- 0.01 g) for 40 days. Growth rates of
prawns were significantly (P < 0.01) affected by lipid source. Mean
growth rates of prawns fed linseed oil, canola oil, soybean oil and
MCT/cod liver oil were significantly (P < 0.05) higher than in prawns
fed cod liver oil or lard. Prawns fed MCT oil exhibited a significantly
(P < 0.05) lower mean growth rate than prawns fed all other diets.
Survival of prawns was between 77 and 100%. Analysis of fatty acid
composition of neutral and polar lipids of whole prawns revealed
similar fatty acid profiles to the diets. Partitioning of 20:5n-3 and
22:6n-3 to polar lipids and shorter chain fatty acids to neutral lipids
was observed in all treatments. Prawns may desaturate 16:0,
elongation and desaturation products of 18 carbon fatty acids were
not noted.
(Zoology Department, University of Queensland, St. Lucia, Qld.
4072, Australia)
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