Adiputra, Yudha Trinoegraha (2020) The Effects of Thyroxine Hormone on Gonadal Maturation and Growth of Male Spiny Lobster (Panulirus homarus). Malaysian Journal of Science, 39 (1). pp. 30-40. ISSN 1394-3065
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Abstract
The present experiments were designed to find the optimum dose of thyroxine hormone administration to enhance gonadal maturation and growth of male spiny lobster (Panulirus homarus). Maturation study used 30 male spiny lobsters divided into two treatments of dose of weekly injection of thyroxine hormone i.e., 0 and 0.1 µg/g. Samples were taken to determine parameters of gonadosomatic index (GSI), anatomy and histology of gonads. Growth study used 44 male spiny lobsters divided into 4 treatments of doses of weekly thyroxine injection i.e., 0, 0.1, 0.2, and 0.5 µg/g during 70 days of culture. Growth parameters of specific growth rate (SGR), the growth of carapace length (GCL), the number of molted male spiny lobster, feed conversion ratio (FCR), and survival rate were observed. Results showed that injection of thyroxine hormone at a dose 0.1 µg/g supported optimum SGR and GCL, FCR, molted and survival rate. Moreover, male spiny lobsters injected with thyroxine at a dose of 0.1 µg/g increase GSI (P<0.05), showed a better gonad development and higher number of spermatogonia.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QL Zoology S Agriculture > SH Aquaculture. Fisheries. Angling |
| Divisions: | Fakultas Pertanian (FP) > Prodi Ilmu Kelautan |
| Depositing User: | YUDHA TRIN |
| Date Deposited: | 24 May 2020 08:10 |
| Last Modified: | 24 May 2020 08:10 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/20423 |
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