Flashcards in Bovine Repro Deck (163)
When do you see puberty in the bovine?
when heifer reaches 50-60% adult body weight
What influences when a heifer reaches puberty?
Inbreed later onset
Cross-breeds sooner onset
Bos Taurus earlier than Bos indicus
Heifers from bulls large scrotal circumference
What are the stages of the Bovine estrus cycle?
How many days are there in the Metestrus cycle of the Bovine?
How many days are there in the Diestrus cycle of the Bovine?
sexual receptivity of female
What are the signs of Estrus in the bovine?
Final follicular maturation
Formation of CL
Period of CL dominance through luteolysis
Progesterone levels decreasing
Estrogen levels increasing
At what age are heifers bred in the dairy herd?
Voluntary Waiting Period
The period we allow for the uterus to involute and read for pregnancy
How long is the VWP?
60 days to allow the mammary glands to rest before calving to ensure peak lactation after calving
What are the advantages of synchronization?
Reduce the window of time when insemination is appropriate
Reduce the time spent in estrus detection
enhance estrus detection
Allow scheduling of breeding/inseminations
provide for synchrony essential to most embryo transfer programs
What re the general principles of estrus control and synch?
shorten the luteal phase
lengthen the luteal phase
Lutalyse or Estrumate
causes regression of the CL
Estrus displayed in 2-5 days
What is the feed through product that can be used to synchronize cattle?
How does the CIDR work?
extends the Diestrus phase
Why do you use GnRH with the CIDR?
induced a synchronous emergence of a new follicular wave
What should you examine when examining the fetus?
How do you assess that the fetus is alive?
position response to pedal, palpebral, eye ball, mouth, and anal pressure by movement reflex
What does meconium suggest about the calf?
What does fetid odor suggest about the calf?
process by which fetus is restored to deliverable fashion
Pushing the fetus out of maternal pelvis into the uterine cavity to enable correction of abnormality
Turning the fetus on its longitudinal axis
Turning the fetus on its transverse axis into a cranial or caudal presentation
placed into the medial canthus to help turn the head into the right position