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Spica LN, Sanches EA, Junior DPS, Filho RACC, de Oliveira Brasileiro L, Rodrigues RB, Kasai RYD, Povh JA. Successive seminal collections from Leiarius marmoratus during the reproductive period. Anim Reprod Sci 2021; 234:106852. [PMID: 34583146 DOI: 10.1016/j.anireprosci.2021.106852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 11/19/2022]
Abstract
This study aim was to verify whether milt quality of male Leiarius marmoratus is maintained among successive samples collected during the same reproductive period. Ten reproductively mature males were used to evaluate four successive sperm samples collected at 10-day intervals. For these collections, seven males were injected with carp pituitary homogenate (CPH) at a dosage of 3.0 mg/kg body weight, in two applications (30% and 70%), at an interval of 10 h. The other three males were administered only saline (control). Injection with CPH or saline occurred prior to each of the four collections. Only one male from the control group released a small volume of milt (0.33 mL), and only during the first collection period. Of the seven males treated with CPH, five released milt during all four collections. Milt volume of the first sample collected (0.63 mL) did not differ from that of other samples (0.59-1.38 mL; P > 0.05). Sperm concentration was greater in the first samples collected (1.98 × 109 spermatozoa/mL) compared to the other samples (0.35 × 109 at 0.92 × 109 spermatozoa/mL; P < 0.05). Sperm motility, curvilinear velocity, straightness, and morphological normality did not differ among the consecutive samples (P > 0.05). Average path velocity, straight-line velocity, oscillation, linearity, progression, and membrane integrity decreased slightly in the samples collected subsequent to the first sample (P > 0.05). In conclusion, milt quality decreased among successive collections; however, quality of all samples from all collections was sufficient for use for fertilization of oocytes.
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Affiliation(s)
- Louise Nex Spica
- Animal Science Graduate Program, Faculty of Veterinary Medicine and Animal Science, FAMEZ, Mato Grosso do Sul Federal University - UFMS, ZIP 79070-900 Campo Grande, MS, Brazil.
| | - Eduardo Antônio Sanches
- CAUNESP, ZIP 14884-900 Jaboticabal, SP, Brazil; UNESP, Fishery Engineering Course, ZIP 11900-000 Registro, SP, Brazil
| | - Danilo Pedro Streit Junior
- Aquam Research Group, Animal Science Research Program, Federal University of Rio Grande do Sul - UFRGS, ZIP 91540-000 Porto Alegre, Brazil
| | - Ruy Alberto Caetano Corrêa Filho
- Animal Science Graduate Program, Faculty of Veterinary Medicine and Animal Science, FAMEZ, Mato Grosso do Sul Federal University - UFMS, ZIP 79070-900 Campo Grande, MS, Brazil
| | - Lucas de Oliveira Brasileiro
- Animal Science Graduate Program, Faculty of Veterinary Medicine and Animal Science, FAMEZ, Mato Grosso do Sul Federal University - UFMS, ZIP 79070-900 Campo Grande, MS, Brazil
| | - Rômulo Batista Rodrigues
- Aquam Research Group, Animal Science Research Program, Federal University of Rio Grande do Sul - UFRGS, ZIP 91540-000 Porto Alegre, Brazil
| | | | - Jayme Aparecido Povh
- Animal Science Graduate Program, Faculty of Veterinary Medicine and Animal Science, FAMEZ, Mato Grosso do Sul Federal University - UFMS, ZIP 79070-900 Campo Grande, MS, Brazil
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Konzen-Freitas AR, Abreu JGD, Abreu JSD, Dantas VLDQ, Corrêa Filho RAC, Povh JA. Tambaqui females (Colossoma macropomum) spawn after hormonal induction with buserelin acetate. Anim Reprod Sci 2020; 221:106594. [PMID: 32931986 DOI: 10.1016/j.anireprosci.2020.106594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 11/26/2022]
Abstract
The aim of this study was to evaluate induced reproduction in tambaqui females using buserelin acetate as compared with the traditional treatment regimen with carp pituitary extract (CPE). Reproductive traits of females with a body weight (BW) of 8.47 ± 1.52 kg were evaluated in ten females treated with buserelin acetate at the dose of 0.5 mL/kg BW, in a single application, and in ten females treated with CPE at the dose of 5.5 mg/kg BW, in two applications (10 % and 90 %, with a 12-h interval between applications). Spawning rate did not differ between the females treated with buserelin acetate (40 %) and CPE (40 %). Weight, fertilization rate and hatching rate did not differ between the two treatment groups. Degree-hours (determined as the average temperature multiplied by time, in hours, for spawning after the treatment with the second dose of CPE and after the single treatment with buserelin acetate) for spawning and number of oocytes per gram of gametes collected were greater (P < 0.05) in the females treated with buserelin acetate than in the females treated with CPE. Production index, absolute fecundity and relative fecundity were greater (P < 0.05) in the females treated with CPE. The hormone buserelin acetate promotes reproduction in tambaqui females with there being a similar spawning rate and oocyte quality, however, lesser production indices and fecundity than when there is the conventional treatment regimen imposed with carp pituitary extract.
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Affiliation(s)
- Andreia Regina Konzen-Freitas
- College Of Agronomy and Zootechnics, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil; Faculty of Veterinary Medicine and Animal Science, Federal University of Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil.
| | | | - Janessa Sampaio de Abreu
- College Of Agronomy and Zootechnics, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil
| | | | | | - Jayme Aparecido Povh
- Faculty of Veterinary Medicine and Animal Science, Federal University of Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil
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