Fatty acid composition in the intramuscular fat of the musculus longissimus dorsi of Ile de France purebred lambs in two production systems (lambs and ewes were assigned to pasture and fed without concentrates vs. lambs and ewes were assigned to a stable and fed with hay/silage and concentrates) was evaluated using gas chromatography. An analysis of variance was used for comparison. No such comparison had previously been carried out in Slovakia. Meat from lambs assigned to pasture was better.

In sheep production, the body condition scores and parities are important environmental factors affecting lamb yield. Extreme body condition scores (fattening state) lead to negative effects on lamb yield. In the present study, it was revealed that ewes with medium and fat body condition scores (BCS: 2.5–4.0) were profitable. It was shown that the body condition score had minimal effects on the birth weights of lambs, and the incidence of dystocia was increased in thin and very fat ewes.

The aim of this study was to perform a multivariate analysis of lambs' birth weight, survivability traits, growth performance traits, and other defined factors. The study focused on one flock of Suffolk sheep kept under permanent pasture management. Overall 1012 lambs were investigated over 3 years. The results of the study detected lambs' optimal birth weight for this management system. This study also suggested practical implications of important factors when improving flock profitability.