%0 Journal Article %T Influence of selected factors on growth performance of Suffolk lambs and their crossbreds %A BERAN %A Jan %A DUCH¨¢£¿EK %A Jarom¨ªr %A N¨§ME£¿KOV¨¢ %A Dana %A PT¨¢£¿EK %A Martin %A ST¨¢DN¨ªK %A Lud¨§k %J - %D 2015 %R 10.5513/JCEA01/16.1.1562 %X Sa£¿etak The monitoring was performed in one year period in selected population of Suffolk sheep (SF, n = 257) and their crossbreds with Merinolandschaf (SF ¡Á ML, n = 87). Total of 627 lambs (SF, n = 463; SF ¡Á ML, n = 164) were observed in breeding conditions of two semi-extensive flocks. Lambs¡¯ live weight at 100 days of age (LW100); musculus longissimus lumborum et thoracis (MLLT100) depth and backfat thickness (BT100) at the same age were assessed. Effects of breed, ewes¡¯ live weight at mating, litter size, sex of lambs and ewe¡¯s age as linear regression were evaluated using SAS 9.1. Significant differences (P < 0.05) in LW100, MLLT100 and BT100 between SF and SF ¡Á ML were observed. All the evaluated traits of growth performance were also influenced (P < 0.05) by ewes¡¯ live weight at mating. The highest lambs¡¯ growth performance traits were detected in lambs of ewes with highest live weight at mating (group of ¡Ý 80.7 kg). Significant differences (P < 0.05) were observed among singles, twins and triplets lambs as well. Significantly higher LW100 was marked in ram lambs compared to ewe lambs (P < 0.05) %K backfat thickness %K musculus longissimus lumborum et thoracis depth %K sheep %K ultrasound measurements %U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=208374