Postmortem comparison of ultrasonography, endocrine measurements and histology of large abnormal ovarian follicles in cows

Abstract

Six saprophytic A invadans Aphanomyces isolates species Four A astaci isolates Two UM Aphanomyces isolates FIG 1: Average similarity coefficients (F ± sd) of A invadans in comparison with other Aphanomyces isolates calculated from RAPD band patterns all the A invadans isolates had identical nucleotide sequences within the 18S nuclear rRNA gene region and could not be differentiated by restriction fragment length polymorphism (RFLP) analyses of the less-conserved internally transcribed spacer (ITS) regions, located between the 18S and 28S rRNA genes. Also included in the study were six saprophytic Aphanomyces species from EUS-affected areas, four isolates of the crayfish plague fungus Aphanomyces astaci, and two Aphanomyces species isolates from fish affected by ulcerative mycosis off the eastern coast of the USA. Using RAPD data, the average similarity

Treatment of Ovarian Cysts in Buffaloes with Emphasis to Echotexture Analysis

“…36 Thickwalled cyst produce progesterone whereas thin-walled cyst in the absence of other follicles of more than 5mm diameter produce estradiol, but thin-walled cyst in the presence of other follicles of more than 5mm diameter are not estrogenic. [44][45][46] All thick-walled cysts should respond immediately to PGF 2 α. 35 On the other hand, Tebble et al, 37 found no influence of follicular cyst wall thickness on the outcome of treatment either with GnRH or PRID.…”

Clinical: Cystic ovarian disease in cows - diagnosis and treatment decisions

“…Wall thickness is much less in follicular cysts (average of 2.5 mm, range 1-6 mm) than in luteal cysts (5.3 mm, range 3-9 mm; Douthwaite and Dobson, 2000). With follicular cysts, there appears to be a correlation between ultrasonographic wall thickness and hormone concentrations within that cyst, with thicker-walled cysts (average 2.5 mm) showing high progesterone and low oestradiol concentrations, and vice versa in thinner-walled cysts (average 1.3 mm; Scott and Dobson, 1997).…”

“…Typically, the follicular cyst does not require treatment in these cases, as it is physically present but exerts no hormonal influence. A study by Scott and Dobson (1997), however, suggests that the corpus luteum does not influence the steroid concentrations within a follicular cyst. The practical relevance of this needs clarification.…”

Thyroidal and Progesterone Hormones in Cows with Ovarian Cysts and Effects of Therapy with Levothyroxine, KI, GnRH and Progesterone or Ovsynch

“…OC result in prolongation of the calving interval, reduced milk production, increased culling rates (Bartlett et al, 1986;Fourichon et al, 2000) with significant economic losses to the dairy farmer (Scott and Dobson, 1997;.…”