Past animal health and productivity research

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Farmers drenching sheep

Wairarapa finishing farm triple drench resistance case study

The aim of this study was to provide an understanding of introducing refugia into a lamb finishing operation that had a triple drench resistance issue. Refugia, introduced through lambs with susceptible parasites, was compared to the more conventional practice of quarantine drenching.

Farmer drenching sheep

Assessing the impacts of long-acting drench products

This project investigated the potential effect of long-acting drench products on the rumen microbiome, the effect of parasites on ewe growth, Body Condition Score and fecundity over the summer-autumn period.

Image of cattle grazing

Managing parasites and resistance in cattle

This project measured the concentrations of ivermectin (a macrocyclic lactone) reaching target cattle tissues (abomasum and small intestine) and the target parasites (Ostertagia and Cooperia) when given to cattle orally, by injection or pour-on.