Babić, SnežanaSokolović, DejanAndjelković, SnežanaPetrović, MirjanaMarković, JordanPrijović, MladenLazarević, Đorđe2025-04-072025-04-0720211311-0489 (Print)https://rifoc.ikbks.com/handle/123456789/170M51 Рад у врхунском часопису националног значајаPrimary aim in cocksfoot forage breeding is obtaining cultivars with high yield and quality for livestock nutrition. In this study productivity and biomass quality of 19 cocksfoot accessions was investigated, 15 breeding populations originated from the local populations collected mainly in Eastern Serbia, which passed 2 cycles of selection and 4 cultivars. In the planting year plots were cut without weighing. In the next two years, two cuts were taken. The first cut was done at the beginning of heading (the first decade of May) and the second in the first decade of July. The highest dry matter yield in the first cut was determined for DG 6 (13.8 t ha-1) and DG 9 (13.8 t ha-1) accessions, while the most productive accessions in the second cut were DG 6 (4.9 t ha-1) and DG 3 (4.7 t ha-1). The highest dry matter yield in total was found in DG 6 (18.7 t ha-1) and DG 9 (18.4 t ha-1) accessions. Forage quality was determined in two cuts. The best dry matter quality was determined in DG 3, DG 5, DG 9 and DG 15 accessions. For these accessions the highest crude protein content was obtained in the first cut: DG 3 (130.4 g kg-1), DG 5 (130.8 g kg-1), DG 9 (130.7 g kg-1) and DG 15 (130.8 g kg-1) and also in the second cut. In the first cut the lowest ADF content was in DG 3 (332.1 g kg-1), DG 5 (327.5 g kg-1), DG 9 (331.9 g kg-1) and DG 15 (327.4 g kg-1). The lowest values ​​for NDF content in the first cut were in the same accessions: DG 3 (573.5 g kg-1), DG 5 (575.6 g kg-1), DG 9 (576.5 g kg-1) and DG 15 (576.1 g kg-1). Also, the lowest values ​​for ADF and NDF content in the second cut were scored for these accessions.enCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/cocksfootdry matter yieldforage qualitybreeding populationscultivarsarticle