HOME > EDICIONES > Año 2004, Volumen 54 - Número 2
Trabajos de Investigación
Efectos de la incorporación en la dieta de pigmentos carotenoides, sobre el desarrollo gonadal y la madurez de los ovocitos en hembras de trucha arco iris (Onchorhynchus mykiss, Walbaum, 1972)
Genoveva Ingle de la Mora1, J. L. Arredondo-Figueroa2, Irene de los Ángeles Barriga-Sosa2, J. Bazán-Arias2 y J. Vernon-Carter3
Instituto Nacional de la Pesca, Dirección General de Investigación en Acuacultura, México1 - Planta Experimental de Producción Acuícola, Depto. de Hidrobiología, División de CBS, UAM Iztapalapa, México, D.F2 - Depto. Ingeniería y Procesos Hidráulicos, División de CBI, UAM Iztapalapa, México3
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SUMMARY
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 £ 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.
Key words: Saponified red chili oleoresin, carotenoid pigments, gonad development, oocyte maturity, rainbow trout.
Recibido: 11/07/2003
Aceptado: 31/05/2004
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PRIVACIDAD | ACCESIBILIDAD
ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83
Sociedad Latinoamericana de Nutrición
Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0
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