PERFORMANCES OF POPULATIONS OF SEX REVERSED TILAPIA AND GENETICALLY MALE TILAPIA IN FINGERLING PONDS
Abstract: One of the most
popular techniques in mass production of all or nearly all male tilapia
population is through sex reversal. However, cross mating of YY super male with
regular brood-stock is gaining popularity and has been practiced by
aqua-culturists. This study was conducted to evaluate the performance of 2
populations of sex reversed tilapia (sex reversed with dietary application of
17-α methyl testosterone, SRT-1, and sex reversed with dietary administration
of imidazole, SRT-2) and 1 population of genetically male tilapia (GMT) derived
from YY super male until the end of fingerling rearing period. Mixed sex
tilapia (MST) derived from normal mating was used as the control population.
The results showed that the daily growth rates of SRT-1, SRT-2, GMT, and MST
were 0.12, 0.11, 0.20, and 0.07 g/day, with survival rates were 57.83%, 64.67%,
39.67%, and 68.78%, respectively. The GMT has higher harvest yield than the
other populations; SRT-1 (+15.73%), SRT-2 (+6.37%), and MST (+20.82%).
Keywords: Growth performance;
sex reversal; 17-α methyl testosterone; aromatase inhibitor; genetically male
tilapia; Nile tilapia
Author: Didik Ariyanto, Nunuk
Listiyowati, Yogi Himawan
Journal Code: jpperikanangg090026
