Unit 9-Estrous Sync and Heat Detection in Cattle Flashcards
MGA is fed for ____ days
14
Estrous _____ is a managment tool
Synchronization
Discharge indicating the end of standing heat
Bloody
Surgically altered bull incapable of breeding
Gomer
Implant NOT approved for lactating dairy cows
Ear
Prostagladins implants can be give _____ days apart
11
Average # of hours for standing heat
8
Turns color when a cow is mounted
patch
Short for corpus luteum
CL
Cattle begin ____ 30-50 days after calving
cycling
suppresses cycling activity
Progestertone
Low milk progesterone levels indicate a cow in _____
Heat
Trade name for oral compound to suppress heat
MGA
______ causes the CL to rupture
Protagladins
______ residues must be avoided in milk for human consumption
Drug
Cycling stops when the cow is….
pregnant
Beef producers use estrous synchronization to reduce _____
labor
The primary methods of estrous sync. are what 4 things…
prostagladins injections; ear implants; oral administration; progestergen combined with prostagladins injections
When an ear implant is removed after 9 days, cycling females are expected to be in heat w/i ____ days
3
Heifers usually begin cycling at about ______ months of age and exhibit standing behavior every ____ days
12, 21
The simplest way to detect if a cow is in heat is to make a ______ mark on the rump or tailhead
chalk
Cattle showing a bloody discharge from the vulva are entering standing heat? t or f
False
What behavior is the single best indicator of standing heat
Standing to be mounted by other animals
