Card Set Information
Horse production test
What is the exterior opening of the repro tract?
What makes up the vulva?
What is the vagina?
Muscular membrane that communicates the vestibule to the cervix
What is the physical barrier between the vagina and the uterus?
What affects the shape and characteristics of the cervix?
What changes the color of the cervix?
increase of estrogen
pale to pink to red
How does the location of the cervix change?
High to low during estrous cycle
What are oviducts?
tiny coiled tubes that connect the uterine horn to the ovary
Where does fertilization of an ovum occur?
Ampulla section of oviduct
What is the ovary?
Kidney bean shaped and varies in size and texture between breeding and non-breeding seasons
What covers the ovary?
Follicular epithelial cells that cause a follicle to grow and mature
What is the master organ of the stallion repro system?
What occurs in the testes?
Sperm and testosterone production
What can affect spermatozoa production?
Where are the testes housed?
Why is repro efficiency the lowest in horses?
bred for genetics and competition qualities
What is horses' repro efficiency?
When do mares breed?
when days become longer (spring & summer)
how long is equine gestation?
Why is the universal birthdate bad?
Breeders want foals born close to January as possible
discouraged from rebreeding mares not bred by may
What is anestrous?
Minimal hormone and ovarian activity
What is estrous?
Multiple cycles in spring and summer
estrus and diestrous
How long does estrus (heat) last?
What is diestrous?
21-23 days between estrous cycles
What activates hormones to prepare for breeding?
What does melatonin do?
High in winter
drops in spring, telling other hormones to increase (LH, follicle-forming hormones)
What drives the repro system in horses?
What are most breed registries against?
What is the purpose of AI?
breed more animals
What are the types of AVs?