engleski

Infertility in the Bitch - current approaches

Infertility in the bitch is the inability to conceive or to produce viable offspring. Before medical evaluation, it is important to obtain an anamnestic data and performed detail physical examination. The majority of diagnostic tests required are available to the veterinary practitioners (complete blood count, chemistry profile, ultrasonography, vaginal citology, serum progesteron concentration, radiography). After these preliminary steps, fertility problems are most commonly considered in one of these categories: no estrous cycles, abnormal estrous cycles, failure to carry a litter to term and failure to breed. Specific treatment for the most common causes of infertility is centered on appropriate breeding management. Potential missed breeding opportunities, primary or secondary anestrus or conception failure present indications for estrus induction. Methods for estrus induction in bitches include the use of synthetic estrogens (diethylstilbesterol), dopamine agonists (bromocriptine and cabergoline), GnRH agonists (lutrelin, buserelin, fertirelin, deslorelin, and leuprolide), exogenous gonadotropins (LH, FSH, hCG, PMSG, and human menopausal gonadotropin) and opiate antagonists (naloxone). These methods vary in efficacy of inducing estrus and in the fertility of the induced estrus. Also, applicability of some methods for clinical practice is questionable. Conception failure, low conception rates or inability to carry a litter to term may also represent an abnormality of the reproductive organs, systemic diseases, tumors and infections of reproductive organs.

infertility; bitch

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