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Recent results from a giant Freshwater prawn breeding program at RIA2: the 5th generation

FRIday - 21/11/2014 01:58
This research was conducted base on the harvest data from 5,820 individuals of a giant freshwater prawn (Macrobrachium rosenbergii) breeding program on the 5th generation at Research Institute for Aquaculture No.2 by the end of the year 2013.
After 128 days rearing, mean body weight of mixed sexes was 32.5 ± 17.4 g, 27.5 and 43.9 for female and male, respectively. Female proportion was dominated (69.4 %) in number. Visible Elastomer Tags (VIE) retention was very high (98.7%). In details, losing VIE tags in female (1 %) was lower than that of male (2%). Heritability of total body weight was low (0.18 ± 0.04). The estimate of female heritability was high (0.47 ± 0.10) and very low for male (0.08 ± 0.03). Genetic correlation between male and female was positive and relatively high (0.81 ± 0.10). This result shows the possibility of indirect selection for male could be done by selecting female.

Nguyen Trung Ky
National Breeding Center for Southern Freshwater Aquaculture

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