[Effects of the dietary incorporation of carotenoid pigments on gonad development and oocyte maturity in females of rainbow trout (Oncorhynchus mykiss, Walbaum, 1972)].
Four groups of rainbow trout (Onchorhynchus mykiss) each with 60 females with an average body weight of 467 g were submitted to an aleatory assay in order to compare the efficiency of four diets containing different concentrations of carotenoid pigments, and to determine if pigment concentration and source had an influence on female gonad development and oocyte maturity. The first diet was the non-pigmented control (C). The second diet contained 100 mg kg(-1) of Carophyll Pink (CR). The third and fourth diets contained 200 (RC200) and 250 (RC250) mg kg(-1) of saponified red chili oleoresin, respectively. The results indicated significant differences (p < or = 0.05) between C and RC250, with respect to the gonado-somatic index (IGS), average gonad weight (PG) and average diameter of oocyte (DO), with CR250 showing higher IGS, PG and DO values. Treatments CR and CR200 presented similar values. At the end of the experimental period, only 10% of oocytes were mature in the RC250 diet.
de la Mora
Genoveva Ingle
GI
Instituto Nacional de la Pesca, Dirección General de Investigación en Acuacultura, México.
Arredondo-Figueroa
J L
JL
Barriga-Sosa
Irene de los Angeles
Ide L
Bazán-Arias
J
J
Vernon-Carter
J
J
D000276:Adjuvants, Immunologic / Q000494:pharmacology; D000818:Animals; D002338:Carotenoids / Q000494:pharmacology*; D004032:Diet; D005260:Female; D006066:Gonads / Q000187:drug effects* / Q000254:growth & development; D017686:Oncorhynchus mykiss; D009865:Oocytes / Q000187:drug effects* / Q000254:growth & development; D010936:Plant Extracts / Q000494:pharmacology; D012741:Sexual Maturation; D024341:Xanthophylls; D019207:beta Carotene / Q000031:analogs & derivatives* / Q000494:pharmacology
D000276:Adjuvants, Immunologic; D010936:Plant Extracts; D024341:Xanthophylls; C018620:oleoresins; D019207:beta Carotene; D002338:Carotenoids; C006889:capsanthin; C005948:astaxanthine