Povezanost ehoteksturnih pokazatelja digitalne ultrasonografije maternice, predovulacijskog razvoja folikula i ovulacije u čistokrvnih arapskih kobila

Objective assessment of ultrasonographic images is only possible using computer-assisted echotexture analysis. This study investigated the relationship between cyclic digital echotexture analysis of ultrasonographic uterine images, and preovulatory follicle development and ovulation in 48 cyclic purebred Arabian mares during the breeding season. When the mares’ ovarian follicle diameters exceeded 30 mm, ultrasonographic examinations were performed and ultrasonographic images recorded with uterine endometrial edema degrees following follicle development until ovulation day. Echotexture measurements, including mean grayness value (MGV), heterogeneity (HET) and contrast (CON) parameters, were performed on the days when ovarian follicle diameters reached 30 mm (Group 1, n = 12), 35 mm (Group 2, n = 12), 40 mm (Group 3, n = 12) and 45 mm (Group 4, n = 12) in images recorded the day before ovulation and on the day of ovulation. MGV was the lowest in Group 2 and the difference from the other groups was statistically significant (P0.05). Variations in HOM (P 0,05). Varijacije HOM-a (P < 0,05), kontrasta (P < 0,05) i MGV-a (P < 0,01) bile su statističke znakovite na dan prije ovulacije kao i na dan ovulacije. Prema tome ultrazvučni pokazatelji ehoteksture povezani su s razvojem predovulacijskih folikula u kobila te zaključujemo da oni mogu uputiti na dan ovulacije u čistokrvnih arapskih kobila