Aquaculture Studies
2018, Vol 18, Num, 2 (Pages: 113-125)
Vitellogenesis of Giant Gourami (Osphronemus goramy) Examined by the Measurement of Estradiol-17β, Vitellogenin Concentration and the Size of Ovary
Ayu Winna Ramadhani 1 ,Abdul Samik 1 ,Sri Pantja Madyawati 1
1 Airlangga University, Faculty of Veterinary Medicine, Department of Reproduction Veteriner, Surabaya, Indonesia
DOI :
10.4194/2618-6381-v18_2_05
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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.
Keywords :
Estradiol-17β, Vitellogenin, Ovary size, Osphronemus goramy