Female reproductive exam Flashcards
Oestrus detection in cows…
careful observation (at least 30 mins morning & night) - record numbers heat detection devices include chin-ball markers, kamar heatmount detectors, pedometer look for mounting of other cows
Oestrus detection in ewes…
no clear signs without male or teaser
teaser rams fitted with chest harness holding crayon
Oestrus detection in sows…
signs clear esp. when close to male
back pressure test
Describe why pregnancy diagnosis is important…
economically important to know preg. status
early ID of open cows - treat/cull
predict calving pattern
ID any abnormalities
Some signs of pregnancy…
non-return to oestrus
Cardinal signs of preg. in cow…?
Via transrectal palpation
- amnionic vesicle
- fetal membrane slip
- placentomes
- fetus
Methods of detecting pregnancy…
rectal palpation
real time ultrasonography
Other supporting signs of pregnancy in cows…?
asymmetry of uterus
fixation of cervix
Real time ultrasonography is important why? advantages…
cattle - embryo HB 20-25d, fetal sexing d55-60, gestational age
sheep - fetal number (after d40), gestational age
pig - early diagnosis d28