Trichostrongyle worm infection in cattle: Ostertagiasis and concurrent infections in dairy calves: Seasonal patterns of occurrence,pathology and diagnosis |
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| Authors: | RV Brunsdon MSc PhD |
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| Institution: | Wallaceville Animal Research Centre , Private Bag, Wellington |
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| Abstract: | In the three years from October 1979 to September 1982 over 6.3 million lambs were processed in two meat works and of these 0.5% had lesions of contagious pustuiar dermatitis (CPD). The proportion of iambs affected was highest in the months of December and January when up to 2.2% of the Iambs slaughtered had lesions of CPD. On average 13.4% of a consignment (referred to as a line) of lambs showing evidence of CPD were affected. The total lambs in affected lines constituted 4.1% of the total slaughtered. If it was decided to reject for slaughter lines with CPD, approximately 1¼ million lambs would be returned to farms each year. It was concluded that such a policy would be unlikely to substantially reduce the level of infection in meat workers. |
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