Now showing items 1-8 of 8

    • Analysis of profitability of raw milk production in a commercial farm before and after Poland's accession to the EU 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Stanisławski, Daniel; Czerniawska-Piątkowska, Ewa; Nowak, Anna K. (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017)
      The aim of this study was to analyse milk production profitability over a period of more than a decade in a commercial farm in terms of two periods: prior to Poland's accession to the EU (from 1998 to April, 2004) and ...
    • Causes for Culling and Reproductive System Disorders in Jersey Cows in the Reproductive Period 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Stanisławski, Daniel; Czerniawska-Piątkowska, Ewa; Rolińska, Karolina (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2018)
      The aim of this study was to analyse culling causes and determine reproductive health disorders in Jersey cows in the reproduction period in a herd from the Wielkopolska region. Analyses were conducted on 331 Jersey cows. ...
    • Characteristics of Reproduction Traits in Cows with Record Lifetime Milk Yields 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Czerniawska-Piątkowska, Ewa (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022)
      The aim of this study was to characterise basic reproduction indexes and to investigate the effect of selected factors on values of analysed fertility parameters in cows (100 head) with record lifetime milk yields. The ...
    • Dependencies Between Cattle Breed and Profitability of Raw Milk Production 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Powchowicz, Mikołaj; Czerniawska-Piątkowska, Ewa (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2019)
      The aim of the study was to compare profitability of raw milk production in two herds, one of Jersey cows (J) and the other of Polish Holstein-Friesian Black-and-White cows (PHF), owned by the same economic entity. In ...
    • Dependencies between PIT-1 gene polymorphism and production progress in polish holstein-friesian black-and-white cows 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Stanisławski, Daniel; Czerniawska-Piątkowska, Ewa (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017)
      The aim of this study was to analyse the dependence between PIT-1 gene polymorphism in exon 6 of bovine chromosome 1 (c.1178G>A) and the level of production progress in Polish Holstein-Friesian Black-and-White cows. The ...
    • Dependencies between prl gene polymorphism and production progress in polish holstein-friesian black-and-white cows 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Stanisławski, Daniel; Czerniawska-Piątkowska, Ewa (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017)
      The aim of this study was to analyse dependencies between PRL gene polymorphism within exon 4 of bovine chromosome 23 (locus g.8398G>A), and the level of production progress in milk yield, yields of milk fat and milk ...
    • The effect of selected factors on freshening milking efficiency in primiparous polish holstein-friesian black-and-white cows 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Stanisławski, Daniel; Czerniawska-Piątkowska, Ewa (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017)
      Sire origin as well as age and body weight of heifers at fertilization were shown to have a statistically significant effect on freshening milking efficiency in Polish Holstein-Friesian Black- -and-White primiparous cows. ...
    • The Effect Of Selected Factors On Milking Rate In Polish Holstein-Friesian Black-And-White Cows. 

      Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Czerniawska-Piątkowska, Ewa (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022)
      The aim of the study was to investigate the effect of selected physiological factors (age, lactation stage and daily milk yield) on milking rate by Polish Holstein-Friesian Black-and-White cows. The duration of morning, ...