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Full-Text Articles in Medicine and Health Sciences
Morphological Studies On Ovarian Mast Cells In The Cow, Asuman Özen, Levent Ergün, Emel Ergün, Nejdet Şi̇mşek
Morphological Studies On Ovarian Mast Cells In The Cow, Asuman Özen, Levent Ergün, Emel Ergün, Nejdet Şi̇mşek
Turkish Journal of Veterinary & Animal Sciences
This study was conducted on cows in the estrual and luteal phases of the cycle to determine the staining properties, light and electron microscopic appearance and numerical distribution of mast cells from various areas of the ovary. The material for the study comprised ovarian specimen taken from 14 cows, 7 in the luteal phase and 7 in the estrual phase of the sexual cycle. Specimens were taken from 3 different areas of the ovaries, including those surrounding the corpus luteum, the graafian follicle and the medulla. From all 3 areas, mast cells were demonstrated as metachromatic staining after treatment of …
The Effect Of Artificial Insemination Timing On The Sex Ratio Of Offspring And Fertility In Dairy Cows, Orkun Demi̇ral, Mustafa Ün, Murat Abay, Tayfur Bekyürek
The Effect Of Artificial Insemination Timing On The Sex Ratio Of Offspring And Fertility In Dairy Cows, Orkun Demi̇ral, Mustafa Ün, Murat Abay, Tayfur Bekyürek
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to investigate the effect of the interval between artificial insemination and the onset of estrus on the sex ratio of offspring and fertility in Holstein cows. Standing to be mounted behavior was considered the beginning of estrus, and artificial inseminations were performed 6 h (Group 1), 9 h (Group 2), 12 h (Group 3), and 15 h (Group 4) after the onset of estrus in cows. Overall 119 (n: 85), 107 (n: 72), 120 (n: 80) and 119 (n: 83) artificial inseminations were performed in Groups 1, 2, 3 and 4, respectively. Pregnancy rates …