Bovine transrectal ultrasonography Flashcards
What are the safety risks of trans rectal ultrasonography to the cow and how do we mitigate these risks?
What are the safety risks of trans rectal ultrasonography to the operator and how do we mitigate these risks?
What are the common indications for bovine trans rectal ultrasonography?
Routine fertility visits (RFVs)
Pregnancy diagnosis (PD)
Post-natal checks (PNC)
Anoestrus or ovarian cysts
Oestrus not observed (ONO) / Not seen bulling (NSB)
What is the goal of routine fertility visits (RFVs)?
To shorten the calving interval, helping the farm return cows to pregnancy efficiently
What is the goal when a cow has not been served after the voluntary waiting period?
To ensure service within 21 days after waiting period to maintain optimal calving interval
What should be done if a cow is in anoestrus?
Stimulate a new follicular wave to encourage ovulation
How should a cow with cystic ovarian disease be managed?
Luteinise cyst & stimulate new follicular wave
What are the options if a cow is cyclic but not yet served?
Do nothing – inform farmer to observe for heat
Manipulate cycle to ensure next heat leads to service
What ovarian structure does this image show?
Follicle
What ovarian structure does this image show?
Follicle
What ovarian structure does this image show?
Corpus Luteum
What ovarian structure does this image show?
Corpus luteum and follicle
What does this uterine image show?
Oestrus uterus
What does this uterine image show?
30d pregnancy
What does this uterine image show?
36d pregnancy
What does this uterine image show?
42d pregnancy
What does this uterine image show?
60d pregnancy
What does this uterine image show?
200d pregnancy
