Bovine trans-rectal ultrasonography Flashcards
What are the safety risks of bovine trans-rectal ultrasonography?
To the cow:
- Rectal tear
- Discomfort
- Damage to pregnancy
To the operator:
- kick
- crush
- tail
- musculoskeletal
- infection
How is the risk of rectal tears mitigated in bovine trans-rectal ultrasonography?
Short fingernails
Lubricant
Careful technique
Appropriate technique
Stop if straining
How is the risk of discomfort mitigated in bovine trans-rectal ultrasonography?
Short fingernails
Lubricant
Careful technique
Appropriate restraint
How is the risk of pregnancy damage mitigated in bovine trans-rectal ultrasonography?
Gentle manipulation
Scanner vs manual
How are the risks to the operator mitigated in trans-rectal bovine ultrasonography?
What are 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?
To shorten the calving interval, helping the farm return cows to pregnancy efficiently
When should a service be given to a cow that has not been served?
a service should be given within 21 days after the voluntary waiting period is over to maintain optimal calving interval
What should be done if a cow is in anoestrus and not been served?
Stimulate new follicular wave
What should be done if a cow has cystic ovarian disease and not been served?
luteinise cyst and stimulate new follicular wave
What are the options is a cyclic cow has not been served?
Can do nothing – inform farmer to observe for heat
Could manipulate cycle to ensure next heat results in serve
What ovarian structure is this?
Follicle
What ovarian structure is this?
follicle
What ovarian structure is this?
Corpus Luteum
What ovarian structure is this?
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
