The aim of the study was to evaluate how the process of cryopreservation influenced the morphological status of ram sperm. The experiment was carried out with 26 sexually matured, pure bred rams during their breeding campaign. The animals were divided in two groups according to the breed – 15 rams from Synthetic Population of Bulgarian Milk (SPBM) and 11 rams from Sofia breed (SB). The sperm morphology was evaluated under microscope (Nikon Eclipse E200, Japan) by staining with SpermBlue (Microptic, Spain), performed according to the manufacturer's protocol, and observed under bright field with magnification of ×40. Cryopreservation of semen straws was done by the method of Cassou (1964). After cryopreservation, the percentage of spermatozoa with normal morphology decreased and those with abnormal morphology increased. This difference was more pronounced at rams from SPBM compared to SB rams. After freezin...g, the percentage of spermatozoa with damage to the head at rams from both breeds increased. The percentage of the spermatozoa with damage in the midpiece and the tail was higher and significant (P<0.001) for the SPBM rams. The low temperatures of cryopreservation had a detrimental effect to the rams’ sperm structures. This damaging effect was much stronger for the rams from SPBM breed compared to rams from Sofia breed.
Keywords:
ram / cryopreservation / spermatozoa / morphology status
Source:
Proceedings of the 12th International Symposium Modern Trends in Livestock Production, 2019, 373-381
Publisher:
Institute for Animal Husbandry, Belgrade-Zemun
Projects:
National Scientific Program for young scientists and postdoctoral fellows, funded by the Bulgarian Ministry of Education and Science (MES) with РМС № 577 (17.08.2018)
TY - CONF
AU - Andreeva, Madlena
AU - Metodiev, Nikola
AU - Cekić, Bogdan
AU - Stefanov, Rossen
PY - 2019
UR - http://r.istocar.bg.ac.rs/handle/123456789/671
AB - The aim of the study was to evaluate how the process of cryopreservation influenced the morphological status of ram sperm. The experiment was carried out with 26 sexually matured, pure bred rams during their breeding campaign. The animals were divided in two groups according to the breed – 15 rams from Synthetic Population of Bulgarian Milk (SPBM) and 11 rams from Sofia breed (SB). The sperm morphology was evaluated under microscope (Nikon Eclipse E200, Japan) by staining with SpermBlue (Microptic, Spain), performed according to the manufacturer's protocol, and observed under bright field with magnification of ×40. Cryopreservation of semen straws was done by the method of Cassou (1964). After cryopreservation, the percentage of spermatozoa with normal morphology decreased and those with abnormal morphology increased. This difference was more pronounced at rams from SPBM compared to SB rams. After freezing, the percentage of spermatozoa with damage to the head at rams from both breeds increased. The percentage of the spermatozoa with damage in the midpiece and the tail was higher and significant (P<0.001) for the SPBM rams. The low temperatures of cryopreservation had a detrimental effect to the rams’ sperm structures. This damaging effect was much stronger for the rams from SPBM breed compared to rams from Sofia breed.
PB - Institute for Animal Husbandry, Belgrade-Zemun
C3 - Proceedings of the 12th International Symposium Modern Trends in Livestock Production
T1 - Study of the effects of low temperatures on the morphological status of ram spermatozoa
SP - 373
EP - 381
ER -
@conference{
author = "Andreeva, Madlena and Metodiev, Nikola and Cekić, Bogdan and Stefanov, Rossen",
year = "2019",
abstract = "The aim of the study was to evaluate how the process of cryopreservation influenced the morphological status of ram sperm. The experiment was carried out with 26 sexually matured, pure bred rams during their breeding campaign. The animals were divided in two groups according to the breed – 15 rams from Synthetic Population of Bulgarian Milk (SPBM) and 11 rams from Sofia breed (SB). The sperm morphology was evaluated under microscope (Nikon Eclipse E200, Japan) by staining with SpermBlue (Microptic, Spain), performed according to the manufacturer's protocol, and observed under bright field with magnification of ×40. Cryopreservation of semen straws was done by the method of Cassou (1964). After cryopreservation, the percentage of spermatozoa with normal morphology decreased and those with abnormal morphology increased. This difference was more pronounced at rams from SPBM compared to SB rams. After freezing, the percentage of spermatozoa with damage to the head at rams from both breeds increased. The percentage of the spermatozoa with damage in the midpiece and the tail was higher and significant (P<0.001) for the SPBM rams. The low temperatures of cryopreservation had a detrimental effect to the rams’ sperm structures. This damaging effect was much stronger for the rams from SPBM breed compared to rams from Sofia breed.",
publisher = "Institute for Animal Husbandry, Belgrade-Zemun",
journal = "Proceedings of the 12th International Symposium Modern Trends in Livestock Production",
title = "Study of the effects of low temperatures on the morphological status of ram spermatozoa",
pages = "373-381"
}
Andreeva, M., Metodiev, N., Cekić, B.,& Stefanov, R.. (2019). Study of the effects of low temperatures on the morphological status of ram spermatozoa. in Proceedings of the 12th International Symposium Modern Trends in Livestock Production
Institute for Animal Husbandry, Belgrade-Zemun., 373-381.
Andreeva M, Metodiev N, Cekić B, Stefanov R. Study of the effects of low temperatures on the morphological status of ram spermatozoa. in Proceedings of the 12th International Symposium Modern Trends in Livestock Production. 2019;:373-381..
Andreeva, Madlena, Metodiev, Nikola, Cekić, Bogdan, Stefanov, Rossen, "Study of the effects of low temperatures on the morphological status of ram spermatozoa" in Proceedings of the 12th International Symposium Modern Trends in Livestock Production (2019):373-381.
