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The material for the analyses comprised blood samples collected from 65 Zlotnicka Spotted (Zlp) sows and 43 Zlotnicka White (Zlb) sows born and kept in two herds in Wielkopolska. While analysing reproductive, fattening and slaughter traits, information was collected on 290 litters, including 180 litters of Zlp sows and 110 litters of Zlb sows. Intravital measurements were taken using a Piglog 105...
The subject of the study refers to the effect of housing and milking systems on yield, chemical composition, and cytological quality of milk from primiparous cows held in two barns belonging to the same owner where cows were fed using the same feed. Cows from barn C were kept in deep litter and milked in a fishbone milking parlour, whereas cows from barn M were kept in box stalls with litter bedding...
Celem badań było określenie czynników wpływających na zrównoważenie bilansu energii i białka u krów o wysokiej wydajności. Analizowano wydajność dobową mleka, numer i miesiąc laktacji. Badania przeprowadzono w stadzie o wydajności 11 tys. kg mleka/rok, na 517 krowach w czasie laktacji. Krowy w laktacji podzielone były na cztery grupy technologiczno-żywieniowe. Żywione były dawką TMR rozliczoną na...
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