TY - JOUR TI - Th e Eff ects of Fast and Slow Th awing on Spermatological Parameters and Detect of Chromatin Condensation by Toluidine Blue Staining in Frozen-Th awed Bull Sperm AB - Th e purpose of this study was to observe the eff ect of diff erent thawing methods on semen parameters such as motility and morphology and sperm chromatin integrity as assessed by toluidine blue (TB) staining. A total of 20 frozen sperm straws from the same Holstein bull were used. While the 30 sec thawing protocol at 37°C, which is used for thawing frozen sperm straws, constitutes our slow thawing group (n=10), the 6 sec thawing protocol at 70°C constitutes our fast-thawing group (n=10). Th e motility, viability, morphology, plasma membrane integrity, and sperm chromatin condensation parameters of all thawed sperm were investigated. Th ere was a significant diff erence (P<0.05) in sperm plasma membrane integrity, head defect, and total abnormal sperm morphology. Th e chromatin decondensation rate detected by TB in bull semen thawed in the slow thaw system, and the decondensation rate in the fast thaw system, diff ered significantly from each other in line with the literature data (P<0.05). According to the evaluations made in terms of chromatin decondensation rate, the rate obtained in slow thawing (7±0.39) shows an increase up to two times compared to the fast-thawing rate (3.3±0.33) (P<0.05). Th e TB staining procedure can be used to evaluate infertility and chromatin integrity, especially in cases that are suspicious and require rapid evaluation. AU - ESİN, Burcu AU - CEVIK, MESUT AU - AKAR, MELİH AU - KAYA, Cumali DO - 10.9775/kvfd.2021.26950 PY - 2022 JO - Kafkas Üniversitesi Veteriner Fakültesi Dergisi VL - 28 IS - 3 SN - 1300-6045 SP - 307 EP - 313 DB - TRDizin UR - http://search/yayin/detay/532192 ER -