The present work aimed to do a retrospective data analysis in 33 ewes with pregnancy toxaemia, focusing on the clinical and laboratorial aspects of the disturbance. The majority of the animals were raised intensively with free access to concentrate food and they were, at the final trimester of pregnancy, carrying two or more fetus. The laboratorial exams revealed hyperglycemia and ketonuria in most of the ewes. The clinical evolution varied from five to 17 days in the animals that died (42.4%) or received clinical discharge (57.6%), respectively. Thus, this work confirms that pregnancy toxaemia is a metabolic disorder leading to important economic losses in Pernambuco State, Brazil, due to the mortality of ewes and lambs.