Adiputra, Yudha Similarity document for publication of THE EFFECTS OF THYROXINE HORMONE ON GONADAL MATURATION AND GROWTH OF MALE SPINY LOBSTER (PANULIRUS HOMARUS). Malaysian Journal of Science. ISSN 1394-3065 (Unpublished)

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Abstract

The present experiments were designed to find the optimum dose of thyroxine hormone to enhance the gonadal maturation and growth of male spiny lobsters (Panulirus homarus). The maturation study used 30 male spiny lobsters divided into two treatments of weekly thyroxine hormone injections of 0 and 0.1 µg/g, respectively. Samples were taken to determine the following parameters: the gonadosomatic index (GSI), the anatomy, and the histology of the gonads. The growth study used 44 male spiny lobsters divided into four treatments of weekly thyroxine injections of 0, 0.1, 0.2, and 0.5 µg/g, respectively, over 70 days of culture. The following growth parameters were observed: the specific growth rate (SGR), the growth of carapace length (GCL), the number of molted male spiny lobsters, the feed conversion ratio (FCR), and the survival rate (SR). The results showed that injection of thyroxine hormone at a dose of 0.1 µg/g supported optimum SGR, GCL, FCR, molting, and SR. Moreover, male spiny lobsters injected with thyroxine at a dose of 0.1 µg/g experienced increased GSI (P<0.05), showing better gonad development and a higher number of spermatogonia.

Item Type:	Article
Subjects:	Q Science > Q Science (General)
Divisions:	Fakultas Pertanian (FP) > Prodi Budidaya Perairan
Depositing User:	YUDHA TRIN
Date Deposited:	13 Mar 2023 03:20
Last Modified:	13 Mar 2023 03:20
URI:	http://repository.lppm.unila.ac.id/id/eprint/48901

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