Table 2. Flock owner reported clinical signs in 90 sheep flocks with malformed lambs in the lambing season 2011/2012 in the Netherlands.

Group	Symptom	Percentage of flocks
Behaviour of ewe	Ewe slow	17.8%
	Ewe spends more time lying	12.2%
Parturition	Abnormal uterine fluid	23.3%
	Caesarean section	8.9%
	Dystocia	45.6%
	Posterior presentation	33.3%
	Prolonged parturition	50.0%
Lambs	Hydrops ascites lambs	23.3%
	Neurological symptoms lambs	37.8%
Udder health	Abnormal udder development	15.6%
	Abnormal consistence of the milk	4.4%
	Mastitis	10.0%
	Insufficient amount of milk	18.9%