Abstract
This study aims at observing the rate of estradiol-17β synthesis on vitellogenin and the ovary size of the Giant gourami broodstock candidates and female broodstock. The female broodstock candidates were reared in a pond, while the female broodstock were reared in several ponds with the male broodstock (2:1). The blood sample taking was done every week during the three-week observation. The purpose is to measure the concentration of estradiol-17β and vitellogenin. The observation on the broodstock candidates and the broodstock’s ovary size was done in the last week of the observation using veterinary ultrasound. Most of the estradiol-17β synthesis on the broodstock candidates is for vitellogenesis on the initial cycle of reproduction to reach maturation. In contrary, most of estradiol-17β synthesis on the female broodstock is not for vitellogenesis in the next spawning cycle. The observation shows that the size of the broodstock candidates and broodstock’s ovary is small.
Original language | English |
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Pages (from-to) | 113-125 |
Number of pages | 13 |
Journal | Aquaculture Studies |
Volume | 18 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2018 |
Keywords
- Estradiol-17β
- Osphronemus goramy
- Ovary size
- Vitellogenin