Induced reproduction of yellow-tailed lambari (Astyanax lacustris) with Ovopel® and buserelin acetate as alternatives to the protocol with carp pituitary extract.

Autor:	Brasileiro LO; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Povh JA; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Spica LN; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Silva TV; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Stringhetta GR; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Teodoro GC; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Sousa RM; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Fernandes CE; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Campos CM; Universidade Estadual de Mato Grosso do Sul - UEMS, Programa de Pós-Graduação em Zootecnia, Aquidauana, MS, Brasil., Kasai RYD; Piraí Piscicultura, Terenos, MS, Brasil., Teixeira SA; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil., Côrrea-Filho RAC; Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil.
Jazyk:	angličtina
Zdroj:	Brazilian journal of biology = Revista brasleira de biologia [Braz J Biol] 2023 Dec 18; Vol. 83, pp. e275678. Date of Electronic Publication: 2023 Dec 18 (Print Publication: 2023).
DOI:	10.1590/1519-6984.275678
Abstrakt:	The objective of this study was to evaluate reproductive traits in adults of Astyanax lacustris subjected to different spawning inducers. The study involved 240 females (12.54 g ± 2.33 and 7.66 cm ± 0.63 cm) and 240 males (5.83 g ± 0.39 g and 6.14 cm ± 0.64 cm), all at reproductive age. Three different inducers were evaluated: (i) 0.4 pellets of Ovopel®/kg of body weight; (ii) 0.5 ml of buserelin acetate/kg of body weight; and (iii) carp pituitary extract (CPE) (5.5 mg CPE/kg body weight for females and 2.5 mg CPE/kg body weight for males), as well as saline solution (without hormone). The degree-hours for spawning were greater (P<0.05) for the Ovopel® treatment (with 204.93) than in the treatment with CPE (183.2). Ovary weight and gonadosomatic index were higher (P<0.05) in CPE and Ovopel® treatments when compared to buserelin acetate. The number of oocytes per female, absolute and relative fecundity were greater (P<0.05) for Ovopel® and CPE treatments. Fertilization rate was higher (P<0.05) in treatment with buserelin acetate (82.3%) in relation to Ovopel® (72.33%) and CPE (62.40%) treatments, and the highest (P<0.05) hatching rates were achieved with buserelin acetate and Ovopel®. The number of larvae per female body weight was greater (P<0.05) when Ovopel® was used. In conclusion, Ovopel® proves to be a more effective reproductive inducer for induced reproduction of A. lacustris when compared to CPE and buserelin acetate.
Databáze:	MEDLINE
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