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Doctor of Philosophy
Study Completed: 2017
College of Sciences
A study on some aspects of the pathogenicity, diagnosis and control of gastrointestinal nematodes in deer
In New Zealand, gastrointestinal nematodes (GIN) in farmed deer are an important problem that had been neglected. To understand different aspects of GIN parasite infection in red deer Daniela Tapia-Escarate investigated their pathogenicity, the establishment of sheep GIN in deer and the use of PCR to diagnose nematode larvae. In addition, she assessed the effect of cross-grazing management on nematode control. It was observed that even though deer-specific GIN are the most important, some nematodes from cattle and sheep can cross-infect deer. Finally, cross-grazing with cattle, more so than cross-grazing with sheep, reduced the effects of GIN and the number of anthelmintic treatments in young deer. Cross-grazing with either cattle or sheep reduced lungworm numbers in deer. Cross-grazing can be used as a parasite control method that relies less on anthelmintic treatment and reduces the probability of anthelmintic resistance in farmed deer.
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Last updated on Tuesday 04 April 2017