The aim of the present study was to determine the reproductive traits and the milk yield and meat performance of Charolaise sheep. The study was conducted on a breeding flock of Charolaise sheep in the Warmia and Mazury region. The analysis included: reproductive traits over the years 2002-2006, i.e. fertility, fecundity, lamb survival rate and reproductive performance; meat performance traits, i.e. body weight at the age of 2 and 70 days, 4, 8 and 12 months, daily gains over the periods of 2-70 days, 70 days-4 months, 4-8 months and 8-12 months, live (USG) measurements of musculus longissimus cross-section and fat thickness over the loin eye at the age of 70 days, 4, 8 and 12 months; milk performance traits, i.e. daily milk yield at 28 and 70 days of lactation, milk production over a 70-day lactation period, proximate composition of milk, i.e. the concentrations of fat, protein, lactose and dry matter, and somatic cell count (SCC) in milk. It was found that Charolaise sheep raised in the Warmia and Mazury region are characterized by very good meat production traits, reflected in a rapid growth rate and muscle development of ewes and rams both before and after weaning. Good production results were greatly dependent on high milk performance levels. Mean daily milk yield was 2431.43 ml and 1185.71 ml at 28 and 70 days of lactation, respectively, while total milk production over a 70-day lactation period was 128.92 kg. The sheep also showed high fecundity 170.08 %, compared to a mean of 153.38% over a five-year period. However, significant lamb losses, both perinatal (stillbirths) and post-natal, considerably decreased the overall reproductive performance of the herd, which was at an average level of 107.65%. Charolaise sheep are generally sensitive and require greater care, particularly in the perinatal period.
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