1. Introduction to Reproduction Flashcards
Why is reproduction important for domestic animal production?
- Perpetuation of the species
- production of food or products
- genetic improvement
Name 5 reproductive tools that can be used for genetic improvement
- Frozen semen
- sexed semen
- estrus synchronization
- superovulation
- embryo transfer
- embryo storage
- IVF
- cloning
What is the name of the major hormonal axis controlling reproduction?
Hypothalamic-pituitary-gonadal axis
How does the production of gametes differ in the male and in the female?
- Females have cyclic production of gametes
- Males have constant production of gametes
What type of cycle do bovine and porcine species have?
polyestrus
What type of cycle do ovine and equine species have?
seasonal polyestrus
What is the cycle length of bovine, porcine, and equine species?
21 days
What is the cycle length in ovine species?
17 days
What is the duration of estrus for bovine species?
15 hrs
What is the duration of estrus for equine species?
7 days
What is the gestation length in cows?
9 months (282 days)
What is the gestation length in sheep?
5 months (150 days)
What is the gestation length in swine?
3 months, 3 weeks, 3 days (115 days)
What is the gestation length in horses?
11 months (336 days)
What is the duration of estrus for porcine species?
50h
