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Based on data obtained using T4C herd management software from three farms equipped with milking robots, analysis was made of the effect of herd, age of cows, stage of lactation and milk production level on the number of visits to the milking robot and the proportion of different numbers of these visits. GLM and FREQ procedures of the SAS package were used for statistical analysis. The visits ended...
This study analysed basic forms of behaviour in Charolais cows with regard to season of the year and day. It was found that in each season, resting cows preferred lying on the left side, from 19.7% of the day in summer to 27.6% in winter. Animals rested on the right side slightly less often: 14.0% and 24.7% of the day, respectively. Cows spent most time on feed intake in summer (36.2% of the day)...
The study was carried out in 2006–2011 in a farm located in the Kujawsko-Pomorskie province and keeping about 290 Polish Black-and-White Holstein-Friesian cows with a mean yield of almost 11,000 kg milk. GLM and FREQ procedures of the SAS package were used for statistical analysis. The lifespan and length of productive life of high-yielding cows tended to decrease, with an alarming tendency for the...
Seven observations of European bison were made betweenApril and July 2009 (from 6.00 to 18.00) at the Municipal Zoological Garden of the Sea Coast in Gdańsk-Oliwa (8 animals) and at the Polish Fauna Garden of Forest Culture and Leisure Park “Myślęcinek” in Bydgoszcz (4 animals). During 12-hour observations, the European bison from zoological gardens spent 31% of their time feeding, 47% standing and...
Na podstawie wyników z 369 060 próbnych dojów 22 997 krów rasy polskiej holsztyńsko- fryzyjskiej odmiany czarno-białej, będących pod oceną użytkowości mlecznej na Pomorzu i Kujawach, wycielonych po raz pierwszy w 2000 i 2001 roku i użytkowanych do 2008 roku analizowano wpływ miesiąca laktacji, wydajności dobowej, wielkości stada oraz pory roku na udział prób mleka o określonej zawartości białka i...
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