Fifty surveys have been conducted in dairy sheep farms with assisted reproduction in Castilla y León. Economic, technical and productive data were collected, as well as data regarding owner’s profile, aiming to study the characteristics of these farms. The survey results are shown according to production system (intensive or semi-intensive) farm type (dependent or independent), farm size (large, medium or small) and type of manpower (family or hired). The average owner is a of 45 years old man. The average farm (21 years old) has 755 ewes, 173 replacement lambs and 23 rams. The production system is predominantly intensive or semi-intensive. Intensification is related to an increase in the number of animals, improved ewe productivity and income from milk sales. Feeds are bought outside the farm (not produced) in half of them. The work is done by family, with the help of one employee. The average farm produces 194,000 litres/year, which account for 63% of incomes. The remaining incomes are from CAP and lambs sales. Farmers are characterized by their belonging to associations (cooperatives, livestock health defence groups or breeders associations) and show interest to make improvements in their farms.