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The optimum dose and period of synthetic hormones 17-? methyltestosterone during fry stage on masculinization of Siamese fighting fish (Betta splendens) |
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| รหัสดีโอไอ | |
| Creator | 1. Suksan Kumkhong 2. Nitchanan Chukerd 3. Phutthaphorn Phumrojanar |
| Title | The optimum dose and period of synthetic hormones 17-? methyltestosterone during fry stage on masculinization of Siamese fighting fish (Betta splendens) |
| Publisher | Mahasarakham University |
| Publication Year | 2567 |
| Journal Title | Food Agricultural Sciences and Technology (FAST) |
| Journal Vol. | 10 |
| Journal No. | 1 |
| Page no. | 17-28 |
| Keyword | Betta splendens, Siamese fighting fish, 17 alpha methyltestosterone, sex reversal |
| URL Website | https://ph02.tci-thaijo.org/index.php/stej/index |
| Website title | Food Agricultural Sciences and Technology (FAST) |
| ISSN | 2822-1001 (Print), 2822-101X (Online) |
| Abstract | The objective in study aims to develop the production of a mono-sex population of all male Siamese fighting fish (Betta splendens) by using 17?-methyltestosterone (17?-MT). Five treatments contained in a control of, MT-20, MT-40, MT-60 and MT-100 in triplicates. The study for two periods, supplemented diet with 17?-MT experimental diet for 30 days (4 34 days after hatching (dah), Period-I) and for 45 days (4 49 dah, Period-II). Experiments were set up using completely randomized design (CRD). The control group diet without the use of 17?MT. The remaining groups MT-20, MT-40, MT-60 and MT-100 were fed with feed containing 20, 40, 60 and 100 mg kg-1 of 17? MT. Four days old fry were stocked at the rate of 100 fry per tank (Period-I and Period-II). The fry fish with oral administration at first feeding was successfully carried out at four dah. Fish were fed with the experimental diet for two periods (Period-I and Period-II). Gonadal characteristic from Period-I and Period-II reared B. splendens for sex reversal was observed. The highest male population was produced from MT - 60 and MT - 100 mg kg-1 in Period-II. Also demonstrated, there were no significant differences in the survival rates among the experimental groups.In conclusion, the masculinizations of all males were produced from Period-II treatment group 60 and 100 mg kg -1 of 17?-MT successfully produced all-male stocks in Siamese fighting fish. |
