Bovine Repro/ mammary Ddx

Question 1

exclusive Teat sharply edged ulcers

Answer 1

–> Dx = herpes mammalitis ( reportable dz) - transmitted by insect bites ( higher in summer) –> isolate cow and have separate equipment to reduce transmission

• Chemical burns - unlikely leave sections of normal skin
• BVDV - viral lesions are crusty and raised
• Pseudocowpox - lesions are raised with an ulcerated center

Question 2

Fetal presentation upon abortion from a Bovine-herpes -1 infection

Answer 2

• classic finding: multifactorial hepatic necrosis with intranuclear inclusion bodies
• +/- necrosis of spleen, kidneys, lungs, and adrenal glands

Question 3

Bovine herpes virus -1 causes

Answer 3

• infectious bovine rhinotracheitis

- infectious pustular vulvovaginitis of cows

Question 4

Classic lesion in aborted fetus infected with BVDV

Answer 4

• mummification of fetus with developmental abnormalities (brachygnathia, cerebellar hypolasia, cerebral malformations)

Question 5

Classic lesion in aborted fetus infected with Brucella abortus

Answer 5

• suppurative bronchopneumonia

- lymphoreticular hyperplasia

Question 6

Classic lesion in aborted fetus infected with Aspergillosis

Answer 6

• emaciation, dehydration, and scaly, ringworm- like skin lesions
• severe, necrotizing placentitis with thickened, leathery intercotyledonary area

Question 7

Classic lesion in aborted fetus infected with Epizootic Bovine abortion ( foothill abortion )

Answer 7

• enlarged cervical LN
• spleen with thyme hypoplasia
• abortion storm in heifers or cows recently introduced to foothill region of Sierra Nevada range of CA, OR, NV

Question 8

3 Big Bs of abortion

Answer 8

1. BVDV
2. Brucellosis
3. IBR

Question 9

What will induce parturition in most late term cows within 3 days of injection

Answer 9

Dexamethasone (IM) within 2 weeks of normal term

• giving it with prostaglandins will increase efficacy and shorten time to induction ( 1.5 days)

Question 10

GnRH

Answer 10

initiates release of LH from the anterior pituitary

Question 11

human chronionic gonadotropin

Answer 11

luteotrophic

Question 12

Estrogenic therapy in food animal

Answer 12

NOT ALLOWED

• may be teratogenic in pregnant animals
• associated in dogs and cats with cystic endometrial hyperplasia, pyometra, BM suppression and potentially fatal aplastic anemia

ECP ( estradiol cypionate ) in animals = ILLEGAL

Question 13

Diethylstilbesterol (DES) use in food animal

Answer 13

NEVER! BANNED in food animal