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September 2014 by Dr Natasha Hovanessian, BVSc MS, Canberra Equine Hospital

Intestinal worms are present in all horse, pony, donkey and mule populations worldwide, and are considered the major health problem of these species. 

Recent research findings have changed our understanding of worms and how to manage them and, in this article, Dr Natasha Hovanessian from the Canberra Equine Hospital addresses the changes and informs of current recommended management practices for all horses.

Signs of worm infestation are quite variable. The most common signs include poor growth, weight loss (looking ‘ribby’), poor coat, colic (mild to severe), tail rubbing, diarrhoea (loose or soft manure), lethargy and lack of energy, anaemia (low red cells) and possible death.