Wydanie 336(43)3 2017
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Przeglądaj Wydanie 336(43)3 2017 wg Autor "Czerniawska-Piątkowska, Ewa"
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Pozycja Open Access Analysis of profitability of raw milk production in a commercial farm before and after Poland's accession to the EU(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Stanisławski, Daniel; Czerniawska-Piątkowska, Ewa; Nowak, Anna K.; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences,; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences,; Computer Lab, Poznań University of Life Sciences; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life SciencesThe 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 after accession (from May, 2004 to 2012). Obtained source data made it possible to calculate mean annual values for the following items in these calculations: the number of cows, production of milk sold, production of milk to be fed, milk sales price, calf rearing, sales of slaughter cattle, sales of culled cows, total income from milk production, direct costs, feed costs, handling costs, indirect costs including depreciation, total milk production costs, direct costs per 1 l produced milk, total costs per 1 l produced milk, profit/loss from cattle production, profit/loss from 1 l produced milk, value of production per 1 cow, profit/loss from milk production per 1 cow, the ratio of milk sales price to production costs and profitability index for milk production. Within this study data were also collected on profit/loss per 1 l produced milk and milk production profitability indexes in the analysed years. It was shown that following Poland's accession to the EU in the analysed farm statistically highly significant changes were observed in income and costs connected with the production of raw milk. Values of these parameters increased in comparison to the previous period. An increase was recorded in milk production and profit per 1 cow, which was most probably a consequence of breeding work and gained genetic progress and increased productivity in the herd. However, when comparing the period before and after Poland's accession no statistically significant differences were found for profit/loss per 1 l produced milk and milk production profitability indexes. The post-accession period in relation to the previous period was characterised by more dynamic changes in profitability indexes for raw milk production, which resulted in a lesser stability in profitability for this branch of animal production.Pozycja Open Access Assessment of the quality of raw milk purchased depending on the production scale(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Wójcik, Jerzy; Czerniawska-Piątkowska, Ewa; Pilarczyk, Renata; Rzewucka-Wójcik, Edyta; Jaszczowska, Jadwiga; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Department of Ruminant Science, West Pomeranian University of Technology, SzczecinThe purpose of the conducted studies was the assessment of the quality of raw milk purchased by the dairy plant, including the purchase volume, the quality of the raw milk and the seasonality of its purchase. Farms were divided by the amount of milk produced: 1 group to 5000 kg of milk per month; 2 groups 5001–10 000 kg of milk; 3 groups of 10 001 to 15 000 milk per month; 4 group over 15 000 kg of milk per month. A slightly higher percentage of fat in milk from group 4 was found. The microbiological purity of milk was similar in all groups, highlighting the small LKS and OLB. The existing seasonality of production has been observed. The production volume during the summer period was about 18% higher. It seems appropriate to continue to specialize farms and introduce in the bigger farms the full-year feeding system (TMR).Pozycja Open Access Selected factors which cause fertility disorders in dairy cows(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Czerniawska-Piątkowska, Ewa; Medyk, Pamela; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Department of Ruminant Science, West Pomeranian University of Technology, SzczecinThe aim of the study was to identify selected factors influencing the dairy cows' reproductive disorders and some mistakes made by breeders in running herd, especially concerning feeding. Environmental factors influencing fertility were analysed and factors influencing its disorders were characterized. As one of the main causes of fertility disorders in large herds was indicated inappropriate veterinary care.