Canada's Organic Science Cluster

Activity I.1: Over-Wintering of Gastrointestinal Parasites in Organic Sheep Production

Objectives:

To determine:

1. Factors affecting over-wintering and periparturient egg rise (PPER) in ewes:
1. Group level factors e.g. season of lambing.
2. Individual level factors e.g. prolificacy.
2. If strategic timing of anthelmintic treatment reduces PPER.
3. Factors affecting the over-wintering survival of GIN including Haemonchus contortus on pasture under central Canadian conditions.
4. If over-wintered L3 H. contortus larvae are capable of establishing a patent infection in naïve lambs.

Learn More:

• Activity Summary
• Background and Supporting Documents
• Activity Researchers

Interesting Results to Date:

• NEW!! Managing Parsites in Ontario Sheep Flocks
• NEW!! Parasite Control on Organic Sheep Farms in Ontario
• Handbook for the Control of Internal Parasites of Sheep
• Stay tuned for reports, newspaper articles, and extension bulletins related to this activity.

 

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