Comparative study utilizing different post-breeding treatment regimens in cyclic Arabian mares

Area of Science:

• Veterinary Science
• Reproductive Medicine
• Equine Reproduction

Background:

• Post-breeding treatment is crucial for mare reproductive management.
• Common prophylactic therapies include oxytocin, uterine lavage, and intrauterine antibiotics.
• Optimizing these treatments can enhance conception and pregnancy outcomes.

Purpose of the Study:

• To evaluate the efficacy of six different prophylactic treatment regimens.
• To determine the most efficient treatment protocol for mares after natural breeding.
• To compare treatment outcomes across different age categories of cyclic Arabian mares.

Main Methods:

• A study involving 968 cyclic Arabian mares across three age categories.
• Six prophylactic treatment groups (antibiotics, lavage, oxytocin, and combinations) were compared against a control group.
• Pregnancy and foaling rates were monitored via ultrasonography and follow-up until foaling.

Main Results:

• Younger mares (5-10 years) showed highest pregnancy/foaling rates with oxytocin alone or oxytocin with intrauterine lavage.
• Middle-aged mares (11-15 years) benefited most from uterine lavage treatment.
• Older mares (≥16 years) had good outcomes with oxytocin and intrauterine lavage.

Conclusions:

• Systemic intramuscular oxytocin is ideal for younger mares (5-10 years).
• A combination of systemic intramuscular oxytocin and intrauterine lavage with normal saline proved effective across all age groups.
• This combined treatment regimen significantly improved pregnancy and foaling rates in mares 4 hours post-breeding.