Story: Diseases of sheep, cattle and deer



When a pregnant ewe becomes infected with toxoplasmosis, she usually suffers an early abortion – it is the major cause of abortions in sheep in New Zealand. The disease is caused by a protozoan organism that is mainly a parasite of cats but also needs another species such as a sheep or mouse to complete its life cycle. This photograph shows the effect of the disease on several pairs of twin lambs – one of each pair is relatively normal and the other is smaller and mummified.

Using this item

Reference: D. M. West, A. N. Bruere and A. L. Ridler, The sheep: health, disease & production. Palmerston North: Veterinary Continuing Education, Massey University, 2002, fig.

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

All images & media in this story

How to cite this page:

Gary Clark, Neville Grace and Ken Drew, 'Diseases of sheep, cattle and deer - Reproductive and nervous system diseases', Te Ara - the Encyclopedia of New Zealand, (accessed 13 July 2024)

Story by Gary Clark, Neville Grace and Ken Drew, published 24 Nov 2008