Test 1: 9 pregnant cow 2 Flashcards
clinical findings in cow that are supportive of pregnancy
- no return to estrus
- CL
- progesterone
- bPSP-B
- uterine distension
clinical findings that prove pregnancy in cow
- embyronic/fetal fluids
- embryo/fetus proper
- placenta
- placentomes
- embryonic/fetal HR
progesterone test is used in cows for
test if NOT pregnant- if low levels
* can rebreed cow
bPSP-B test in cows is used for
test if pregnant
* levels increase around 30 days
* blood test- not really used anymore
* levels stay high for 7 weeks postpartum (false positive)
when can you tell cow is preg using palpation vs US
palpation- 35 days- membrane slip and amniotic vessels
US- 25 days- fetal heart beat
on palpation when can you feel membrane slip
35 days
on palpation on cow when can you feel amniotic vessels
60 days
on palpation of cow when can you feel placentome
90 days
why induce abortion in cow
- mismating
- hydrops
- maternal cardiac failure
- breeding dates
- retained fetal membranes
how to induce cow
need to lyse CL
* **prostaglandins **(PGF2⍺)- dinoprost, cloprostenol
* short acting corticosteroids- dexmethasone, flumethasone
hydrops allantois (hydrallantois)
* ↑ allantoic fluid after mid gestation- rapid and dramatic
* caused by placental dysfunction
which hydrops in cows is caused by abnormal placentation
hydrallantois (apple shape)
* cull cow
* very rapid and dramatic
cow with hydrops allantosis will present with
distended uterus/ abdomen
* anorexia, dehydration, constipation, recumbency
* uterus above pelvic floor
* difficult to palpate fetus
rapid and dramatic
caused by problem with uterus and placentation
can you rebred cow with hydrops allantosis
no- caused by problem with uterus/placentation
how to treat hydrops allantosis
drain slowly
supplement fluids
induce parturition/abortion
DO NOT REBRED
hydroamnios is caused by
abnormal fetus
* rare
* slow progression
can you re breed a cow with hydramnios?
yes- caused by fetus abnormality
how to treat vaginal prolapse in cow
clean and push back in- occurs in late gestation
* buhner technique
* avoid re-breeding- cull
when can a uterine prolapse occur
early postpartum
* can see caruncles on endometrium
what can cause uterine prolapse
- excessive traction dystocia
- uterine atony
- hypocalcemia
postpartum condition
when can uterine torsion occur in cow
stage 1 labor when calf is changing position
* large fetus
* male fetus
* prolonged gestation
what are some predisposing factors of uterine torsion
- large fetus
- male fetus
- prolonged gestation
can occur in stage 1 labor
2 ways to try to fix uterine tosion
detorsion rod/bar
plank in the flank
surgery
what is plank in the flank
trying to fix uterine torsion
Yo u are contacted by a producer who is interested in synchronizing estrus in a group of beef heifers. Which of the following hormones is the most appropriate for this purpose?
a) FSH b) GnRH c) LH d) Oxytocin e) Prostaglandin
prostaglandin- will cause CL degrade which will allow for new cycle to start
A 5-year-old Holstein cow that is 100 days in milk that has not been observed in heat is presented. On ultrasound exam, an anechoic structure 28 mm in diameter with a 6 mm-thick wall is observed in one ovary. Multiple follicles 3-8 mm are observed in the contralateral ovary. Which of the following is the most likely diagnosis?
a) Normal ovaries b) Granulosa cell tumor c) Ovarian teratoma d) Follicular cyst e) Luteal cyst
e) Luteal cyst
