نتایج جستجو برای: stallion
تعداد نتایج: 593 فیلتر نتایج به سال:
Abstract The case of an 8-year-old, sexually active but infertile Przewalski’s stallion ( Equus ferus przewalskii ) was studied. Besides the infertility, also showed permanent problems with its body condition, being obviously weaker than all other group members. horse kept in a separate place for two years 12 mares harem (six had foals earlier); however, none covered got pregnant. Andrological ...
A suitable method for the cryopreservation of donkey semen would be very valuable for the ex situ management of genetic diversity in this species. This report uses a variety of observation and trials to evaluate the effect of cryoprotectants in per-cycle pregnancy rates (PC) in equids females (jennies (donkey) and mares (horse)). This was explored by (1) comparing the results of insemination of...
BACKGROUND The aim of this study was to investigate the in vitro effects of the Fusarium fungus-derived mycotoxin, zearalenone and its derivatives alpha-zearalenol and beta-zearalenol on motility parameters and the acrosome reaction of stallion sperm. Since the toxic effects of zearalenone and its derivatives are thought to result from their structural similarity to 17beta-estradiol, 17beta-est...
17B-ol-3-one, 5( 10)-estren17/3-ol-3-one, an isomer each of 5-estrane-3,17-diol and estradiene-3,17-diol and two isomers each of S( 10)-estren-3-ol-17-one and S( l0)-estrene3,17-diol were identified. None of these steroids was detected in the blank incubated samples. In the blank phenolic fractions traces of oestrone and oestradiol-17P were present. In the post-incubation extracts a definite in...
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