When is the best time of year to breed a mare?
spring
What do you give a mare to ovulate?
HCG is approved and licensed for use in veterinary practice for inducing ovulation in mares. For several years, hCG has been used effectively in inducing ovulation in mares that are in behavioral estrus with a follicle of 35 mm or greater.
Do mares ovulate during Diestrus?
During diestrus, the mare is not receptive to the stallion. Ovulation most frequently occurs 24 to 48 hours prior to the end of estrus. Estrus duration is usually three to seven days. Some mares may ovulate two follicles during estrus or a second follicle during early diestrus.
How fast do mares follicles grow?
Follicular growth is approximately 3-5 (three to five) mm per day. Uterine edema – an important indicator of estrus – peaks around 36 hours prior to ovulation in healthy mares.
At what size do follicles ovulate?
Before ovulation As a dominant follicle is selected and grows (days 6–9 of the cycle), estrogen begins to spike (10). A follicle becomes dominant at about 10mm in diameter, and typically grows to be about two centimeters in diameter (and up to about 3.3cm) (14–17).
What does it mean to short cycle a mare?
To be clear, the act of short cycling a mare means to shorten the duration of progesterone dominance produced by a functional corpus luteum (CL). Two major steroid hormones are used to describe the different behavioral periods of a mare’s cycle. The first is estrogen from the cells of the dominant follicle.
Can dystocia result in the death of the fetus and Mare?
Dystocia is life threatening for both the mare and foal so action must be taken as soon as a problem is detected. It is important to get the foal out as quickly as possibly but care needs to be taken not to damage the foal in the process or tear the mare’s uterus and birth canal.
What causes placentitis in mares?
A major cause of placentitis is due to bacterial or fungal infection that enters via the vagina and breaches the cervical barrier, a process known as ascending placentitis. Aspiration of air and faeces into the vagina can occur in mares with poor conformation or injury to the cervix or vulvar opening .
What causes dystocia in mares?
Most causes of dystocia in the mare are due to abnormal presentation, position, or posture. A dead or compromised fetus often is not properly positioned in the pelvic canal. Copious amounts of clean lubricant will ease repositioning and fetal expulsion. Excessive mechanical or manual traction should be avoided.
What causes dystocia?
Causes of dystocia can range from fetal factors such as large fetus’, or abnormal positioning, to maternal factors such as narrowed birth canal, lack of contractions, or exhaustion for prolonged contractions. Dystocia can effect both dogs and cats, but is more common is small breed dogs.