GIN sheep

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GIN - sheep

Major pathogenic species

Teladorsagia circumcinta

Trichostrongylus spp

Small (0.5cm)

Excretory notch

T. axei

Abomasum

T. vitinus +T. colubriformis in SI

Contribute to PGE

Life cycle similar to T.circumcinta

L3 overwinter

Hypobiosis

Pathogenesis

Sub-epithelial tunnels

Villous atrophy

Haemorrhage

Oedema

Diarrhoea

Disease

Black scour

Weight loss/ Poor weight gain

Poor skeletal growth

Traditionally an autumn disease

Changing epidemiology

Late autumn disease incidence highest

Cooperia spp

Cattle + Sheep

Component of PGE

V common

Less susceptible to anthelmintics

Spring worm

Cephalic vesicle

Striations

Bubble 1 collar

Male has stumpy spicules

Pathgenesis

Generally considered mild

Can affect weight gain

Heavy infection

Catarrhal enteritis

Villous atrophy

Oedema of intestinal mucosa

Hard to kill

Dictate drug defining dose

Exceptions

Nematodirus battus

Haemonchus contortus

Worms in abomasum of sheep + cattle

HOT

Worms in SI

NTC

Worm in LI

COT

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