Utilização de 17β-estradiol para feminização de leporinus macrocephalus

Autor: Pereira, Thiago Scremin Boscolo, Boscolo, Camila Nomura Pereira, Batlouni, Sergio Ricardo [UNESP]
Přispěvatelé: Centro Universitário de Rio Preto – UNIRP, FACERES, Universidade Estadual Paulista (Unesp)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Popis: Made available in DSpace on 2021-06-25T10:44:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The aim of this study was to evaluate the effects of the use of a diet supplemented with 50 or 100 mg kg-1 17β-estradiol (E2 ) for Leporinus macrocephalus feminization. Thus, one hundred and fifty fingerlings with 50 days old post-hatch were randomly distributed in fifteen experimental tanks of 90 L and fed for 60 days on a diet supplemented with 50 or 100 mg kg-1 of E2 . At the end of the experiment, sex ratios were determined through histological and macroscopic observations. Histologically, the differentiated ovaries were evidenced by the presence of numerous nests of oogonia and oocytes in primary growth stage. The female ratio (77%) for the group treated with 100 mg kg-1 E2 was significantly higher than those of control (52%) and 50 mg kg-1 treatment (48%) groups. These results obtained in this initial study indicated that 100 mg kg-1 of E2, administered over 60 days, was the most effective treatment for 50 days old L. macrocephalus post larval feminization. However, future studies with variations in the application range can bring even better results. Centro Universitário de Rio Preto – UNIRP, Rua Ivete Gabriel Atique, 45 FACERES, Avenida Anísio Haddad, 6751 Universidade Estadual Paulista – UNESP Centro de Aquicultura da UNESP – CAUNESP, Via de Acesso Professor Paulo Donato Castellane, s/n Universidade Estadual Paulista – UNESP Centro de Aquicultura da UNESP – CAUNESP, Via de Acesso Professor Paulo Donato Castellane, s/n FAPESP: 2010/08334-7
Databáze: OpenAIRE
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