Selecting base population for improvement of tilapia growth performance in saline water environments

  • Phạm Anh Tuấn

Abstract

The present paper reports a preliminary study on selecting base population for selective breeding to improve tilapia growth performance in saline water. Comparative evaluation of growth performance and genetic variation of 9 different tilapia populations produced by crossing  among 3 strains of Nile Tilapia (GIFT, Taiwanese and RIA-I) were conducted. Survivability and growth performance were evaluated by communal stocking of different populations in 3 stable saline environments at 9-10ppt, 14-15ppt and 20-22ppt, and fluctuated salinity ranging from 4 to 19‰. Genetic variation of these populations were also evaluated by analyzing 4 DNA-micro satellite markers. Based on the comparative analysis on survival rate, growth performance and DNA variation, a base population for selective breeding of tilapia for coastal aquaculture was selected and follow-up breeding work was also recommended.

điểm /   đánh giá
Published
2012-11-19
Section
Bài viết