Sheep-CRC INF saliva sampling for monitoring parasite resistance using CARLA assay
| Project start date: | 30 June 2011 |
| Project end date: | 30 August 2013 |
| Publication date: | 01 September 2013 |
| Project status: | Completed |
| Livestock species: | Sheep |
| Relevant regions: | National |
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Summary
Breeding sheep for enhanced immunity to gastrointestinal is one potential means of controlling parasites as the rate of anthelmintic failure increases. The CARLA® Saliva test measures a protective antibody response to nematode L3s and can be used to breed sheep that are more resistant to parasite infection.
CarLA specific IgA antibody levels in saliva were measured on a regular basis in 8 Information Nucleus Flocks located across Australia. The aim of the CARLA® testing was to determine for a range of different localities, when good CARLA® responses and thus adequate exposure to larval challenge occurred.
This study showed that good CARLA® responses can be measured in flocks at a variety of different locations. The CARLA® saliva test would be an option for selecting parasite resistant sheep under Australian conditions.
More information
| Project manager: | Felice Driver |
| Primary researcher: | Sheep CRC Ltd |
