Bovine - Integument

Question 1

What is lice in cows? What ages does it affect? Symptoms? Types of lice and treatments?

Answer 1

all ages and rpoducting in high stocking density (feedlots), stress, poor nutrition
symptoms - pruritus, constant grooming (causes trichobezoars), alopecia, decreased milk prod, weight loss
treatment: biting (permethrin) and sucking (avermectins) lice and back rubs (oil, powder)

Question 2

What is dermatophytosis in cows?

Answer 2

ring worm, fungal infection
symptoms include pruritis, round areas of hyperkeratosis, alopecia around eyes and face like “goggles”
ZOONOTIC
tx w/ benign neglect, topical treatment w/ anti-fungals and fluoride toothpaste

Question 3

What is squamous cell carcinoma in cows?

Answer 3

cancer eye
mature cattle lacking pigment around eyes (herefords, holsteins, simentals)
symptoms include mild blepharospasm, epiphora, ulcerates mass (nictating membrane, conjunctiva, eyelids)

Question 4

How do you trat squamous cel carcinoma? prevention? Px? What if its invasive?

Answer 4

tx w/ surgical excision or eye enucleation if more extensive - curative in early cases
cull if invasive bc its metastatic
px dependant on size and invasiveness
prevention to breed cattle with pigmented skin around eyes

Question 5

WHat is papillomatosis in cows? tx? Px? prevention?

Answer 5

warts
bovine papilloma virus, contracta via direct/indirect contact (such as feeders, waters)
in yg cattle
symptoms are sm hyperkeratotic skin tumors around head, neck and penis
Tx w/ benign neglect, survival removal on penis
Px excellent
prevent w/ vx and limit contact of naive animals with affected animals

Question 6

How is Lice and ringworm similar vs different?

Answer 6

Ring = fungal infection, hyperkeratosis w/ alopecia, zoonotic, benign neglect
Lice = stress, nutrition, stocking density, constant grooming, decreased milk prod and weight loss