SHEEP AND GOAT WORMS

Sheep and goats are commonly infected with gastrointestinal nematodes, liver fluke, stomach flukes, lung worms and tapeworm

1. Gastronintestinal Nematodes:

The most common worms found in sheep and goats are:

  • Brown stomach worm (Teladorsagia circumcincta)
  • Black scour worm (Trichostrongylus colubriformis) and (T. vitrinus spp)
  • Barber's pole worm (Haemonchus contortus)

Other Nematode worms found in sheep and goats are tabled in Table 2.1

2. Flukes (Trematodes)

  • Liver fluke (Fasciola hepatica) is an important parasite of sheep and goats in certain areas where conditions are suitable for the intermediate host, an aquatic snail.
  • Stomach fluke (such as Paramphistomum spp occasionally cause disease, mainly in coastal areas.

3. Lungworms:

  • Dictyocaulus filarial, Muellerius capillaries, Protostrongylus rufescens 

4. Flatworms (Cestodes)

  • Moniezia spp

5. Coccidia (Eimeria)

  • Coccidia are not worms but microscopic protozoal parasites. Our laboratory will note its presence or absence during a FEC

 

COMMON SHEEP AND GOAT WORMS (Table 2.1)

Causing common outbreaks of disease
Common NameScientific Name
Summer-rainfall areas  
Barber’s pole worm Haemonchus contortus
Black scour worm Trichostrongylus colubriformis and T. vitrinus spp.
Brown stomach worm Teladorsagia circumcinta
Non-seasonal to winter rainfall areas  
Brown stomach worm Teladorsagia spp.
Black scour worm Trichostrongylus colubriformis and T. vitrinus spp.
Occasionally significant  
Thin necked intestinal worm Nematodirus spp.
Small intestinal worm Cooperia spp.
Large-mouthed bowel worm Chabertia ovina
Threadworm Strongyloides papillosus
Other minor roundworms/mixed infections  
Hook worm Bunostomum phlebotomum.(very uncommon)
Nodule worm andLarge bowel worm Oesophagostomum columbianum/O.venulosum
Whip worm Trichuris ovis
Stomach hair worm Trichostrongylus axei
Lung worms Dictyocaulus filaria
Protostrongylus rufescens
Large round worm Ascaris spp.
Gullet worm Gongylonema spp
Trematodes (flukes)  
Stomach Fluke Pramphistomum spp
Liver fluke Fasciola hepatica
Flatworms (Cestodes)  
Tapeworm Moniezia expansa

Source:  http://www.wormboss.com.au/worms/roundworms.php

 

GUIDE TO WORM EGG COUNTS IN SHEEP  AND GOATS – Table 2.2

Worm egg count (epg)Interpretation/comments
<200 (epg) Drench  probably not required
200-500 epg Seek advice
>500* Drench probably required

*strongyle eggs per gram of faeces (epg)