Pharmalogical control of reproduction in females

<p>To cause negative feedback on the HPG axis</p> Signup and view all the answers

<p>Melatonin</p> Signup and view all the answers

<p>To stimulate early onset of cyclicity</p> Signup and view all the answers

<p>Progesterone</p> Signup and view all the answers

<p>To stimulate early onset of cyclicity</p> Signup and view all the answers

<p>Progesterone</p> Signup and view all the answers

<p>To prevent breeding</p> Signup and view all the answers

<p>hCG</p> Signup and view all the answers

<p>Increased risk of pyometra</p> Signup and view all the answers

<p>hCG</p> Signup and view all the answers

<p>All of the above</p> Signup and view all the answers

<p>Resolution of pre-disposing factors</p> Signup and view all the answers

<p>Zona pellucida vaccines</p> Signup and view all the answers

<p>Terminate luteal function</p> Signup and view all the answers

<p>hCG</p> Signup and view all the answers

<p>Lack of endometrial PGF2A</p> Signup and view all the answers

<p>Reversible suppression</p> Signup and view all the answers

<p>To make management easier</p> Signup and view all the answers

<p>Progesterone</p> Signup and view all the answers

<p>Pigs only respond to PGF after day 11</p> Signup and view all the answers

<p>Ovsynch without P4</p> Signup and view all the answers

<p>To elevate progesterone levels</p> Signup and view all the answers

<p>To prevent luteolysis</p> Signup and view all the answers

<p>To maintain high progesterone levels</p> Signup and view all the answers

<p>To enable training and performance</p> Signup and view all the answers

<p>Daylight exposure</p> Signup and view all the answers

<p>To induce oestrus behavior and synchronize breeding for management purposes.</p> Signup and view all the answers

<p>Easier management and enables batch farrowing to occur.</p> Signup and view all the answers

<p>Progestogen (oral) for 14-18 days with or without eCG just before P4 removal.</p> Signup and view all the answers

<p>Multiple different protocols exist, such as Ovsynch (with or without P4), Progestogen plus PGF2a, or fixed-time AI.</p> Signup and view all the answers

<p>To elevate progesterone for at least a week before removing the progesterone protocol.</p> Signup and view all the answers

<p>To ensure a high level of progesterone during the 7-day period to enable a rapid fall of progesterone once given prostaglandin.</p> Signup and view all the answers

<p>Stimulation of the HPO axis, control of oestrus/ovulation, resolution of ovarian pathology, treatment of pseudopregnancy/termination of pregnancy, parturition and lactation.</p> Signup and view all the answers

<p>By synchronizing a group of animals, inducing ovulation, and hastening the return of cyclicity (i.e. after parturition, season, lactation).</p> Signup and view all the answers

<p>Influencing photoperiod or its control, mimicking release of gonadotrophins for down-regulation purposes, lengthening or mimicking the luteal phase, blocking progesterone, and shortening the luteal phase (with PGF or prolactin inhibitor).</p> Signup and view all the answers

<p>By using a melatonin implant in summer months and progestogen sponges for approximately 14 days in combination with eCG/GnRH.</p> Signup and view all the answers

<p>To stimulate the early onset of cyclicity.</p> Signup and view all the answers

<p>To ensure the animal has the luteal phase that resets the HPG axis.</p> Signup and view all the answers

<p>Progestogen based protocol, PGF when active CL is present, hasten ovulation with hCG/GnRH</p> Signup and view all the answers

<p>Progestogen depots for 6+ months, GnRH agonist implant, testosterone in Greyhounds</p> Signup and view all the answers

<p>Prolactin inhibitors for 2-5 weeks, GnRH agonist implant, hCG to induce ovulation</p> Signup and view all the answers

<p>GnRH agonist implant, GnRH antagonists, melatonin implants</p> Signup and view all the answers

<p>Exposure to daylight, hCG to induce ovulation, avoid the need for multiple matings</p> Signup and view all the answers

<p>Ensure animals are in breeding window, stimulate ovarian follicle wave development, control time of ovulation, ensure induced CL is functionally normal</p> Signup and view all the answers

<p>Resolution of predisposing factors, diagnosis critical to successful treatment, luteinise if a follicular structure, suppress the hypothalamus-pituitary axis, stimulate luteolysis/regression of luteal tissue</p> Signup and view all the answers

<p>Vaccination against key reproductive proteins, zona pellucida vaccines, anti-GnRH vaccines</p> Signup and view all the answers