Cilj istraživanja je bilo utvrditi veličinu legla kod prvopraskinja u Uzgojnom centru za svinje u Mariboru za krmače pasmina njemački landras i autohtone krškopolske krmače. Promatrana su svojstva plodnosti: broj ukupno oprasene, živooprasene i mrtvooprasene prasadi u leglu. Podaci za istraživanje prikupljeni su iz evidencije u Uzgojnom centru za svinje. U analizu je uključeno ukupno 26 krmača. Podaci o veličini legla uključivali su zapise samo prvih legala, kriterij grupiranja je bio rasporediti krmače na one koje su imale samo živorođenu prasad i krmače koje su imale i mrtvorođene prasadi. U skupini krmača samo sa živorođenom prasadi vidljivo je da je najviše prasenja bilo u ljetno dijelu godine, dok je najmanje prasenja bilo u proljetnim i zimskim mjesecima. Maksimalan broj prasadi imala je prvopraskinja 30-6782-45 koja je u svom prvom leglu oprasila 14 prasadi, dok minimalan broj prasadi koje je oprasila krmača s ušnom markicom 30- 6824-15 iznosi šest. U drugoj skupini krmača koje su u svom leglu imale i mrtvorođene prasadi vidljivo je također da je u ljetnim i jesenskim mjesecima (lipnaj – listopad) bilo najviše prasenja ali i najviše mrtvorođenih dok je najmanje prasenja bilo u zimskim i proljetnim mjesecima (prosinac – svibanj) s najmanje mrtvorođenih. Najveći broj prasadi u leglu imala je krmača 30-6744-54 koja je oprasila 18 prasadi od čega 3 mrtva i 15 živih. Najmanje živooprasene prasadi ima krmača krškopoljske pasmine 88-525-44 koja je oprasila 9 prasadi. Promatrajući nerasta s ušnom markicom 09-122305-200 zaključila sam da ima najveća legla ali i najviše mrtvorođene prasadi.

Aim of research was to determine size of gilts’ litter at the Breeding center for pigs in Maribor, used breeds were German landras and domestic “krškopolska”. Fertility properties were observed: number of newborns, live and dead piglets in litter. Data for research were gathered from the record of Breeding center for pigs. 26 sows were taken for analysis. Data about litter size included information only from first litters, criteria for grouping was to compare live born piglets from dead ones. Groups of gilts with live borns showed that the most litters was born in summer time, in comparison from spring and winter. Maximum number of pigs in litter had gilt (30-6782-45) which had 14 pigs, while minimum number of pigs had gilt with ear tag 30- 6824-15 with 6 piglets. In second groups of gilts who had dead born pigs was visible that in summer and autumn months (june-october) was the most litters but the biggest amount of dead born pigs as well. Smallest amount of litters was in winter and spring time (December – may) with smallest number of dead born. The biggest number of pigs in litter had gilt (30-6744-54) with 18 pigs from which 3 were born dead and 15 alive. Lowest number of live born pigs had “krškopoljska” gilt (88-525-44) which had 9 piglets. By observing boar with ear tag 09-122305-200 I concluded that it had the most litters but as well the highest number of dead borns.