PT  - JOURNAL ARTICLE
AU  - Czerniawska-Piątkowska, Ewa
AU  - Szewczuk, Maciej
AU  - Kamieniecki, H.
AU  - Adamski, M.
AU  - Bruś, A.
AU  - Falta, Daniel
TI  - The comparison of dairy performance and some reproductive parameters of holstein cows imported from Sweden and their Polish age mates
DP  - 2014 Nov 30
TA  - Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
PG  - 39--44
VI  - 55
IP  - 1
AID - 10.11118/actaun200755010039
IS  - 12118516
AB  - The general aim of the present work was to compare dairy performance and some reproductive parameters of Holstein-Friesian (HF) cows imported from Sweden as an in-calf heifers, and their age mates in Poland. The animals were kept freely on the deep litter on the farm owned by Agro-company "Witkowo" and feeding was based on TMR (total mixed ration) system during whole year. All ration's ingredients (bulky feed, concentrate, miscellaneous additives) were mixed and fed as all-mash. The feed ration depended from the physiological condition of a cow and it was composed of corn and grass ensilage, mash concentrate, crushed corn meal, brewer's grains and beet pulp.Cows imported from Sweden as in-calf heifers obtained higher milk, fat and protein yield in both lactations comparing to home cows. Significant statistical differences were observed for kg of milk, kg of protein, for FCM (P