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Full-Text Articles in Veterinary Medicine
In Vitro Effects Of Prostaglandin F_{2a} And Metamizol On The Motility Of Diluted Bull Semen, İzzet Karahan, Gaffari̇ Türk, Seyfetti̇n Gür
In Vitro Effects Of Prostaglandin F_{2a} And Metamizol On The Motility Of Diluted Bull Semen, İzzet Karahan, Gaffari̇ Türk, Seyfetti̇n Gür
Turkish Journal of Veterinary & Animal Sciences
The purpose of the present study was to investigate in vitro effects of prostaglandin F_2 alpha (PGF_{2a}) and metamizol on the motility of diluted bull semen during short-term storage at 4 ºC. In this study, 3 healthy adult Brown-Swiss bulls, each 3 years old, were used. Semen samples were collected with an artificial vagina. Samples were taken from each bull twice a week over the course of 3 weeks (6 samples per bull). One millilitre of semen was removed from each sample for the determination of semen volume, mass activity, initial motility, sperm concentration, and abnormal sperm rate. The remainder …
In Vitro Effects Of Melatonin On Hyaluronidase Activity And Sperm Motility In Bull Semen, Sadetti̇n Tanyildizi, Tanzer Bozkurt, Osman Çi̇ftçi̇, Fati̇h Saki̇n
In Vitro Effects Of Melatonin On Hyaluronidase Activity And Sperm Motility In Bull Semen, Sadetti̇n Tanyildizi, Tanzer Bozkurt, Osman Çi̇ftçi̇, Fati̇h Saki̇n
Turkish Journal of Veterinary & Animal Sciences
The effects of melatonin on hyaluronidase activity of semen and spermatozoa motility of Holstein bulls were investigation in vitro. Semen samples were divided into 5 equal parts and incubated (v/v) with melatonin at the doses of 0.5, 1, 2 and 4 mM for 60 min. Percentages of spermatozoa motility, morphological abnormality and hyaluronidase activity of semen were determined at 5, 10, 15, 20, 30 and 60 min during incubation. Results show that melatonin caused a significant (P < 0.001) decrease in the spermatozoa motility, while causing a significant increase in the hyaluronidase activities of the semen. However, there was no significant difference in the percentages of abnormal spermatozoa when compared with control samples. Doses of 0.5, 1, 2 and 4 mM of melatonin in bull semen decreased the percentage of spermatozoa motility in a time- and dose-dependent manner. The mean percentages of abnormal spermatozoa were not affected by melatonin treatment. However, it caused an increased hyaluronidase activity of bull semen. In conclusion, the existence of melatonin in bull semen has a significant effect on fertilization ability by affecting spermatozoa motility and hyaluronidase activity.
Some Reproductive Parameters And Seminal Plasma Constituents In Relation To Season In Akkaraman And Awassi Rams, Mustafa Gündoğan
Some Reproductive Parameters And Seminal Plasma Constituents In Relation To Season In Akkaraman And Awassi Rams, Mustafa Gündoğan
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to describe seasonal changes in scrotal circumference, sperm motility, sperm concentration, percentage of abnormal spermatozoa and biochemical and enzymatic properties of seminal plasma for 9 months in 10 mature fat-tailed Akkaraman and Awassi breed rams. Scrotal circumference and semen were evaluated monthly from rams and seminal plasma separated from semen to study it. Scrotal circumference, sperm motility and sperm concentration were higher during autumn months. Furthermore, autumn months showed moderate percentage of abnormal spermatozoa. The biochemical analyses of ram seminal plasma indicated that the highest values of total protein, albumin (A), globulin (G), total …