Influence of food and age on breeding and reproductive performances in a rainbow trout population
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2009, Vol 2, Issue 2
Abstract
In this work paper we want to found what is the relation between some morphological features and level of sexual products in a rainbow trout population of 3 and 4 years age. Also, we investigated the influence of extruded pellet fodder on quantitative roes and milt development in the two age categories. The effected researches put into evidence the superior development of females comparatively with males, indifferently on age, with significant and ensured differences. Following the roe quantity and number obtained from females of 3 and 4 years age, we observed that after use of extruded fodder are obtained both quantitative and also numerically superior performances comparatively to those ones obtained after feeding with classical pellet fodder and increase during age, the differences being significant and ensured. There were calculated also the correlations between morphological features taken in study and respective some reproduction indices and were established the directions in which exist real selection and improvement chances. After effected researches and obtained results come out a series of conclusions, following that their basis to be taken selection and improvement measures in view to increase breeding and multiplication performances.
Authors and Affiliations
Ioan Bud, M. Boaru, I. Petrescu-Mag
Keywords
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