Research Note : Evaluation of two methods for adding cryoprotectant to semen and effects of bovine serum albumin on quality characteristics of cryopreserved rooster spermatozoa

Autor: Julián Santiago-Moreno, Héctor Luis-Chincoya, Olga Torres, Berenice Bernal, Henri Woelders, Pedro García-Casado, María GGil, Alireza Behnamifar, Shaban Rahimi
Přispěvatelé: European Commission, CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Luis-Chincoya, Héctor, García-Casado, Pedro, Rahimi, Shaban, Santiago-Moreno, Julián
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Poultry Science 100 (2021) 6
Poultry Science, Vol 100, Iss 6, Pp 101093-(2021)
Poultry Science, 100(6)
Poultry Science
ISSN: 0032-5791
Popis: 5 Pág. Departamento de ​Mejora Genética Animal
Chicken semen cryopreservation is a tool for programs of genetic diversity management and endangered breeds conservation. Due to physiological features, the fertility rates of cryopreserved poultry sperm are lower than mammal species. Thus, improvement of the semen cryopreservation methods is required. A first study was performed by a 2 × 2 factorial design consisting of 2 methods of adding the cryoprotectant [Direct or Diluted (mixed with extender medium)] and 2 cryoprotectants (glycerol and dimethylacetamide). Then sperm quality indicators were evaluated after freezing. A second study with a 2 × 2 design was conducted to evaluate the effectiveness of bovine serum albumin (BSA) on the optimization of 2 different extenders (Lake and Animal Sciences Group [ASG]). Viability and motility variables were evaluated before and after freezing. There was no significant difference in sperm viability and motility variables between Direct or Diluted methods. Supplementation of extenders with BSA improved most of the sperm motility variables in both extenders before and after freezing. Progressive sperm, non-progressive sperm before freezing, and all post-thaw sperm motility parameters, except amplitude of lateral head displacement and beat-cross frequency, were increased in BSA-supplemented extenders (P < 0.05), and BSA improved sperm viability in ASG extender after thawing (P < 0.05). After thawing, the interaction between extender and BSA (P < 0.05), eliminated the differences between the 2 BSA-supplemented media in curvilinear velocity, straight-line velocity, average path velocity, and amplitude of lateral head displacement which were higher in non-supplemented ASG extender than nonsupplemented Lake medium. In conclusion, the direct or diluted methods of adding glycerol or dimethylacetamide, did not significantly affect the post-thaw sperm characteristics. BSA positively affected most of the post-thaw sperm motility indicators regardless of the type of extender and resulted in significantly higher post-thaw sperm viability in ASG medium.
This research is part of a project that received funding from the European Union's Horizon 2020 Research and Innovation Programme under grant agreement Nº 677353 IMAGE. Part of this research was funded by the INIA project RPG 2001-001 and Zoitechlab S.L-INIA contract CON 18-141.
Databáze: OpenAIRE