Equine Parasite Treatment and Prevention

larval cyathostominosis treatment

moxidectin

when treat animals with antiparasitics

treat animals with clinical signs of disease

colic due to parascaris equorum treatment

pyrantel/ ivermectin (more res→ but use first)

recurrent colic and high ELSIA for anocephala teratment

praziquantel or double dose of pyrantel

prevention of cyathostominosis

-maintain parasite burdens low enough to mitigate clinical signs

-pasture management and strategic use of anthelmintics

how should we NOT treat/prevent horses for larval cyasthastominosis

-rotate anthelmintic class and treat all horses is VERY BAD for resistance

pasture management

-appropriate stocking

-faecal collection→ 2x week min

-dung heap separate from grazing area

-pasture rotation esp hot dry conditions

-grazing with ruminants

creation of refugia

Treat those with high parasite burdens (if only we knew)

Minimize pasture contamination

Create a large percentage of parasites not exposed to anthelmintics

10-20% of horses produce 80% of the eggs

what kind of approach on yard for parasite treatment/ prevention

yard wide approach

what FEC means treat with anthelmintic

>500 epg with ivermectin or pyrantel

how often should do FEC

every 8-12 weeks

once treated with anthelmintic, how long until FEC retest

14 days

• see if effective

• should reduce

how to manage new arrivals on yards for worms

hold away from turnout for min 3 days or until FEC assessed

young horse FEC count

more frequent

low risk for parasitic infection

-repeat neg FEC

-cohort neg FEC or tapeworm Ab levels

-5-15 years

-faecal collection >2 a week

-low stocking density

-no youngstock

-no history of colic or parasitic disease

-effective quarantine

moderate risk of parasitic infection

-low or mod FEC or tapeworm Ab levels

-more than 15 years

-sporadic faecal collection

-medium stocking density

-occ movement

high parasitic risk

-high FEC/tapeworm Ab levels

-less than 5 years

-no faecal collection

-high stocking density

-co grazing with youngstock

-history of colic/parasitic disease

-no quarantine

-anthelmintic resistance

terating low risk

no treatment (in autumn)

treating mod/high risk

moxidectin or ivermectin in autumn

when to do tapeworm ELISA

spring and autumn

if high Ab titre on tapeworm ELISA

treat with pyrantel or praziquantel

most pathogenic equine parasite

small strongyle: cyathastomins

what has parascaris developed high adr to

avermectins