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Region of south-eastern Poland is predisposed to cattle breeding (large share of grassland) and production of high-quality food including organic food. In the recent years in Poland a rapid growth of dairy farms with intensive production system has been recorded. The research, conducted in 46 farms which were divided into 3 groups, showed that the best balanced feed rations were found in cowsheds...
After the addition of fat in rations for cows, a decrease in dry matter intake (DMI) is frequently observed. Stimulation of cholecystokinin release and an increase of the absorption and oxidation of fatty acids in the liver explain the mechanism of this phenomenon. The addition of fat does not reduce the lipolysis of storage fat. Differences in the hypophagic operation of different fats can be explained...
Badania przeprowadzono w stadzie krów phf. Doświadczeniem objęto krowy pierwiastki. W próbach mleka określono: zawartość białka, tłuszczu, laktozy, suchej masy, suchej masy beztłuszczowej, pH, oSH, gęstość, termostabilność. Z wydruków RW-2 odczytano wydajność krów. Podczas doświadczenia analizowano zróżnicowanie cech mleka w zależności od stadium laktacji. Wydajność mleczna krów pierwiastek wzrastała...
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