Cheesy Gland & Larval Tapeworms - Leading Sheep
Post on 29-Apr-2022
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Cheesy Gland & Larval Tapeworms
Dr Louise Mullemeister
Senior Veterinary Officer
Biosecurity Queensland
Roma
• Monitors up to 20 different conditions nationally
– Caseous lymphadenitis (cheesy gland)
– Sheep measles
– Hydatids
– Liver fluke
– Bladder worm
– Arthritis
National Sheep Health Monitoring Project
Who has received a feedback report based on
data collected by the NSHMP?
Poll
PIC: QXXX1234
Sheep Killed: 100 Sheep Inspected: 100
No. affected % affected
0 0.00%
5 5.00%
4 4.00%
0 0.00%
3 3.00%
0 0.00%
0 0.00%
0 0.00%
0 0.00%
6 6.00%
Sarcocysts
Sheep measles
Hydatids
Liver fluke
Cancer
Bladder worm
Arthritis
Dog bites
Abattoir
ABATTOIR MONITORING
Date
Disease monitored
Ovine Johne’s disease-like gut lesions
Cheesy gland
A report done by GHD Hassall (2009)
• Processors $15 million per year
• Producers $95 million per year on-farm
National Sheep Health Monitoring Project
Benefits
• Health status
• Surveillance & disease trends
• Regional extension activities
• Research & development
• Producer feedback
National Sheep Health Monitoring Project
Question: How would you rate your knowledge on the
following conditions in sheep?
Queensland Sheep Producer Survey
• Cheesy gland (caseous lymphadenitis – CLA)
• Larval tapeworms
– Sheep measles
– Bladder worm
– Hydatid disease
Summary
Cheesy gland (CLA)
Courtesy of www.infovets.com
Courtesy of www.lbn.org.au
• No effective treatment
• Vaccination
• Isolate & cull infected sheep
• Clean equipment/facilities
• Hygiene
• Plan husbandry activities accordingly
Cheesy gland (CLA) Courtesy of www.dpi.nsw.gov.au
Questions??
• Adult tapeworm
– Moniezia expansa
• Immature or larval (cystic) stages of tapeworms
– Hydatid cysts
– Sheep measles
– Bladder worm
Tapeworms of sheep
Courtesy of www.wormboss.com.au
Larval tapeworms
Adult stage Taenia ovis Taenia hydatigena Echinococcus granulosus
Larval (cystic) stage
Cysticercus ovis Sheep measles
Cysticercus tenuicollis Bladder worm
Echinococcus granulosus Hydatid cyst
Size of cysts 5-10mm 1-60mm Variable
Location of cysts Heart Skeletal muscle
Liver Abdominal cavity
Liver, lungs, kidneys, spleen heart, brain bone
Intermediate hosts
Sheep, goats Sheep, goats, cattle, pigs
Sheep, goats, cattle, pigs, wallaby, kangaroo, human
Sheep measles
Courtesy www.sheepconnecttas.com.au Courtesy www.lbn.org.au
Transmission – Patting a dog then touching mouth
– Kissing a dog
– Items contaminated with soil
– Contaminated food or water
• Prevention – Worming dogs with praziquantel
– Preventing access to offal or carcases
– Preventing access to vegetable gardens and kids play areas
– Removal of dog faeces
– Personal hygiene
Hydatid disease
For medical advice contact your doctor or health clinic or call 13HEALTH (13 43 25 84)
• Monthly worming of dogs with praziquantel
• Feed commercial dog food
• No access to offal or carcases
• Burial/burning of livestock & roo carcasses
• Livestock water free of dog faeces
Larval tapeworm – prevention/control
Questions??
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