Comparison of different methods of diagnosis of cystic ovarian disease in cattle and an assessment of its treatment with a progesterone-releasing intravaginal device.

摘要: The aims of this study were to assess the accuracy different common methods differentiating between follicular and luteal ovarian cysts, monitor response cysts 12 days treatment with a progesterone-releasing intravaginal device (PRID). On basis agreement methods, 25 46 cases examined diagnosed as 14 cysts; for other seven disagreed. use ultrasound was more accurate in diagnosing than combined plasma progesterone concentrations gave most assessment cyst type (92 per cent 82 cysts). mean (se) plasm; concentration lower cows those (0.29 [0.05] v 3.90 [0.63] ng/ml; P<0.05). Luteal had thicker walls (5.3 [0.04] 2.5 [0.2] mm; P<0.0001), wall thickness all positively correlated (r=0.52, P<0.0004). Cows additional follicles greater 5 mm diameter (P<0.01). In diameter, oestradiol 7.9 (1.8) pg/mI compared 24.2 (3.1) pg/ml (P=0.002) without on either ovary. At time PRID removal, increased 1.59 (0.06) ng/ml (P<0.05) decreased 0.87 (001) (P<0.05), although there no change original structure 45 cases. However, new structures frequently observed during treatment. overall pregnancy rate both types after 50 three inseminations, but first service only 18 28 cysts. After treatment, fertility similar that paired herdmates, whereas took 40 longer calve again healthy herdmates. culling higher (41 11 cent).