reproduction in horses Flashcards
(20 cards)
What is the primary sex organ of the mare?
the ovary
What is the primary sex organ of the male?
the testicles
How many testicles does a male have?
2
The estrous cycle is divided into how many physiological parts?
2
Estrus usually lasts about how long
3 - 7 days
the estrus id divided into two physiological parts Name them.
estrus and diestrus
How long does diestrus usually last?
15 - 19 days
What are the two main methods of estrus manipulation?
artificial lighting and hormonal control.
T/F Mares are not seasonal breeders.
False - Mares are seasonal breeders
Horses usually experience regular heat cycles and ovulation every how many days?
every 21 - 22 days
What are the 2 most common management tools used in detection of heat?
Palpation and Teasing
When do filly’s generally start coming into heat?
12 - 15 months of age
The ovary’s are somewhat bean-shaped organs that are how long?
2 -3 inches long
What is the primary hormone responsible for ovulation?
Leutenizing hormone (LH)
Spell Reproductive
Reproductive
During the ovulatory season , the mare undergoes a series of cycles, each of which is approximately how long?
21 - 23 days in length
Spell estrogen
Estrogen
When is there natural breeding season?
It begins in mid -April extends through mid-September
What does CL?
corpus luteum
What does FSH stand for?
Follicle stimulating hormone
