QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Nicolaides, N. Articles by Woodall, A. N. Search for Related Content PubMed PubMed Citation Articles by Nicolaides, N. Articles by Woodall, A. N.

Impaired Pigmentation in Chinook Salmon Fed Diets Deficient in Essential Fatty Acids

Department of Biochemistry and Division of Dermatology, University of Oregon Medical School, Portland, Oregon and U. S. Fish and Wildlife Service, Western Fish Nutrition Laboratory, Cook, Washington

1. A marked depigmentation was observed in the skin of chinook salmon fry fed a fat-free diet since hatching. A similar depigmentation was observed when triolein or linolenic acid was included in the diet, but depigmentation was largely prevented by the inclusion of trilinolein. Depigmentation became apparent after 16 weeks of feeding and reached a maximum in about 24 weeks.

2. General repigmentation occurred during a recovery experiment and appeared to be more pronounced and more rapid in subgroups fed a diet containing 3% of trilinolein than in the subgroups continued with their original diet.

3. Histochemical tests suggest that the depigmentation process involves melanin.

4. Trilinolein or linolenic acid, or both, elicited a positive growth response in chinook salmon fry when substituted isocalorically for sucrose in a fat-free ration, but triolein did not.

Manuscript received 14 June 1962.