Test 3: 42 anthelminitics part 2

Question 1

if a parasite becomes resistant can it become susceptible again?

Answer 1

no

Question 2

life cycle of strongylus vulgaris

Answer 2

Question 3

how was S. vulgaris treated in the past

Answer 3

treatment every 2 months with a variety of drugs

lead to resistance in many other types of parasites

Question 4

goal of equine parasite control

Answer 4

• To minimize the risk of parasitic
  disease
• To control parasite egg shedding
• To maintain efficacious drug and avoid further development of ATH resistance as much as possible

Question 5

refugia

Answer 5

some animals are not treated to try to delay emergence of resistance

only treat those with high parasite load

Question 6

how to measure parasite load

Answer 6

Quanatitative egg fecal count

McMaster or Mini Flotac
(FECRT) Fecal egg count reduction test

only treat animals with > 200 EPG

Question 7

how to check if anti-parasite drug is working

Answer 7

Fecal egg count reduction test

great than 95% keep using drug

try to use same drug for as long as time and use the correct dose

Question 8

what are some ways to manage pastures with parasites

Answer 8

• Regular manure removal
• Avoid overstocking and overgrazing
• Feed hay off the ground or in feed bins
• Do not spread non-composted manure on pasture
• Rotate nonequid species through the pasture to graze
• Formulate a separate plan for adults and immature horse

Question 9

IVM resistance in — is common in cows

Answer 9

Ostertagia ostertagi (brown stomach worm) life cycle
* Increase of monospecific infection – Cooperia sp. or/and Nematodirus sp.

Question 10

how to measure parasite load in sheep and goats

Answer 10

famacha score

Question 11

hookworm resistance in dogs is resistant to —

Answer 11

BZs, MLs, tetrahydropyrimidines (= pyrantel)

started in racing greyhound
test FECRT: report treatment failure to FDA

collect poop to reduce reinfection