Comparison of yield, composition and quality of milk of Polish Holstein-Friesian cows in conventional and automatic milking systems
Magdalena Kolenda, Dariusz Piwczyński, Marcin Brzozowski, Beata Sitkowska, Piotr Wójcik
The Effectiveness of Using Bulls With Increased Immune Response in Terms of Milk Yield, Milk Contents, and Somatic Cell Count in Polish Holstein-Friesian Cows
Bogumił Sobczyński, Dariusz Piwczyński, Beata Sitkowska, Piotr Wójcik, Magdalena Kolenda
Survival of Polish Holstein-Friesian Cows to Second, Third and Fourth Lactation in Conventional and Automatic Milking Systems
Dariusz Piwczyński, Beata Sitkowska, Marcin Brzozowski, Mariusz Bogucki, Piotr Wójcik
The effect of genotype and sex on carcass composition, digestive system and leg bone traits in broiler breeders after the reproductive season
Marcin Wegner, Dariusz Kokoszyński, Dariusz Piwczyński