The effect of diet on the fatty acid composition and liver histology of pikeperch (Sander lucioperca (L.)) larvae
2006
Ostaszewska, T. (Warsaw Agricultural University (Poland). Div. of Ichthyobiology and Fisheries), E-mail: [email protected] | Boruta, T. (Warsaw Agricultural University (Poland). Dept. of Animal Breeding and Production)
The effect of various diets on growth, survival, and the content of fatty acids (FA) in pikeperch, Sander lucioperca (L.), larvae was determined. During larval development (from day 5 to day 47 post-hatch), the fish were fed two commercial feeds - Bio Kyowa (BK group) and Aglo Norse (AN group) - and Artemia nauplii (A group). In Z group - larvae developed under natural conditions. The composition of fatty acids of both commercial feeds and Artemia nauplii satisfied the nutritional requirements of pikeperch larvae during their development. The A group larvae had a two-fold higher content of C 18:1 acid in comparison to the fish in the BK and AN groups. In the A group, polyunsaturated fatty acids comprised 26.07 percent of total FA content, while in the BK, AN, and Z groups it was 40 percent. The larvae fed the AN diet had the greatest capacity of hepatocytes and the greatest relative capacity of cytoplasm occupied by lipids
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