Numbers: COW Flashcards
1
Q
Puberty
A
11 months
2
Q
Cyclicity
A
polyestrous
3
Q
Estrus Length
A
15 hours
4
Q
Time of Ovulation
A
12 - 16 hours after the end of estrus
5
Q
Embryo enters Uterus
A
3 days post - fertilisation
6
Q
Maternal recognition of Pregnancy
A
Bovine IFNt produced by the trophoblast around Day 15-16
7
Q
Type of Placenta
A
Anatomically Cotyledon placenta Histologically Synepitheliochorial placenta
8
Q
Hormonal Background of Pregnancy
A
CL independent (placenta takes over around Day 200)
9
Q
Gestation
A
285 days
10
Q
Post- partum Resumption of Cyclic Ovarian Function
A
lactational anoestrus
11
Q
Length of Involution
A
Dairy - 42 days Beef - 30 days
= Reverting of the uterus and other genital organs to the pre-pregnant size and state following childbirth
