Food Animal Parasitology

Question 1

what is FEC used for?

Answer 1

breed purposes and to identify high contaminators

Question 2

what factors can be used to indicate targeted selective treatment?

Answer 2

FEC
Milk production
FAMACHA
BCS

Question 3

what can increase refugia?

Answer 3

targeted selective treatment and selective non-treatment

Question 4

what can speed the development of anthelmintic resistance?

Answer 4

long acting products
alternative anthelmintics
pour on products

Question 5

what are the 3 big cattle dewormers?

Answer 5

1. macrocyclic lactones (pour ons popular)
2. benzimidazoles
3. nicotinics

Question 6

calves born in the spring should be dewormed when?

Answer 6

they should be treated midsummer (maybe at weaning) since they don’t have a large worm population under 4 months of age

Question 7

when should you deworm fall born calves?

Answer 7

at pasture turnout (start of grazing season)

Question 8

refugia

Answer 8

selective non-treatment, leaving a percentage of the herd untreated

Question 9

is targeted selective treatment common in cattle?

Answer 9

NO

Question 10

how might combination treatment of parasites effect efficacy?

Answer 10

the combination of two drugs with ~75% efficacy yields greater than 90% efficacy providing broad spectrum efficacy

**when drugs showed reduced efficacy individually, the combination was effective **