Flashcards in Quiz 2 Ruminants Skin and Reproductive Deck (28):
what ages does paillomatosis affect most commonly?
yearlings and calves
Fibrous core covered with squamous cell epithelium and hyperkeratinization of the outer layers, and vary from:
Small firm to large cauliflowers, grey or black and rough to the touch.
Where on the body can you find papillomatosis
Teat, udders, head, neck, omasum, vulva, penis, anus
Where else does papillomatosis occur?
GI and bladder lesions progressing to squamous cell carcinoma
How does papillomatosis enter the body?
How do you treat papillomatosis
You dont!! spontaneous regression within 4-6 months.
Bovine herpesvirus 2
What are your 2 forms of bovine mammillitis
1 bovine mammillitis
Mild fever with skin nodules on face, neck, back and perineum.
The nodules are flat with slightly depressed centers, involving on superficial layers of epidermis which undergo necrosis
Whats economically important to remember about bovine mammillitis
milk yield can drop 10% and could have concurrent mastitis
What are your ddx for pseudolumpyskin?
Warts, cowpox, pseudocowpox, vesicular stomatitis and FMD
Control of Bovine Mammillitis
Arthropod transmission is suspected
milking machines need to be kept clean.
Where is the world does pseudocowpox occur?
Common endemic Worldwide
What are the pathognomonic lesions for pseudocowpox
where on the body will you pseudocowpox?
Teats mainly but also
muzzles and the mouths of suckling calves
Bovine Herpesvirus 1
Infectious Pustular vuvlovaginitis and balanoposthitis
what spp of cow does ipv occur in?
What do you suspect when you see a cow who is painful to urinate, wide stance, swollen vuvla maybe discharge, and the vestibular mucosa is read with many small pustules
IPV and B
Dx of IPV and B
IF of vesicular fluid
Controlling IPV and B?
Eliminate carrier bulls.
Vaccines do not prevent infection, just reduce incidence and severity of disease-DIVA
What are your 3 ddx for abortion in cattle?
What are prions?
Proteins that have folded incorrectly, and since they are self monoclonal Ab can't distinguish them
What gene is it that mutates?
PrP gene resulting in different conformation, lesions, incubation and mortallity patterns
Prions are resistant?
Yes, to heat, UV radiation, and chemicals.
How can you reduce the infectivity of a prion?
Autoclaving at 132C for 90min, 1 M NaOH adn phenol extraction