1
|
Castelo TDS, Silva AMD, Peixoto GCX, Souza ALP, Campos LB, Lima GL, Dantas MRT, Souza-Junior JBFD, Silva AR. Cryopreservation efficiency of red-rumped agouti (Dasyprocta leporina) sperm obtained from different origins through epididymal retrograde flushing or electroejaculation. Cryobiology 2023; 113:104787. [PMID: 37890650 DOI: 10.1016/j.cryobiol.2023.104787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/26/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
This study investigated whether the origin of sperm (epididymal vs. ejaculate) affects the cryopreservation efficiency in agouti (Dasyprocta leporina). Five sexually mature agoutis underwent electroejaculation, resulting in obtaining four semen samples. After 15 days, the same animals were euthanized, and through retrograde flushing, sperm samples were obtained from the epididymis tails. In both collection methods, samples were evaluated for sperm parameters (sperm concentration, motility, vigor, membrane integrity, osmotic response, and morphology). Then, samples were diluted in ACP 109c, added with 20% egg yolk, and a final concentration of 6% glycerol. Finally, the samples were packaged in 0.25 mL straws and frozen in liquid nitrogen. After one week, samples were thawed and evaluated in the same way as fresh samples, with the addition of membrane integrity analysis using fluorescent probes (C-FDA/PI) and computerized analysis (CASA). Immediately after obtaining the sperm, samples obtained directly from the epididymis presented higher values (P ≤ 0.05) than those obtained by electroejaculation concerning the parameters of volume, sperm concentration, and total number of sperm (1,398.25 ± 206.0 x106 and 184.5 ± 78.0 x106 sperm). On the other hand, in the classical evaluation of the other sperm parameters and the computerized analysis (CASA) after thawing, such as total motility, no statistical differences were observed between sperm from both origins (ejaculate: 16.7 ± 8.2% and epididymal: 24.8 ± 12.0%, P > 0.05). This demonstrates the possibility of direct application of the cryopreservation protocol for agouti (D. leporina) sperm obtained via the epididymis or ejaculate.
Collapse
Affiliation(s)
- Thibério de Sousa Castelo
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Andréia Maria da Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Gislayne Christianne Xavier Peixoto
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Ana Liza Paz Souza
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Lívia Batista Campos
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Gabriela Liberalino Lima
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Maiko Roberto Tavares Dantas
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - João Batista Freire de Souza-Junior
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Alexandre Rodrigues Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil.
| |
Collapse
|