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In the experiment involved 186 milk samples obtained from cow udder quarters at different state of mastitis. Milk derived from infected udder quarters was characterised by a statistically significant higher total protein percentage share and a higher pH value (p£ 0.05) by a lower lactose (p£ 0.01) and casein content (p£ 0.05) than milk of healthy quarters. The content of solids not fat indicated the...
The effects of soil and its fertility on the mineral content of fodder and on quality, nutritional value and mineral composition of cow milk were studied. The samples of soil, the soil-originated fodder, and milks from cows fed the fodder were taken from 45 peasant farms. The soil was assayed for the type, firmness, pH value and macroelement resources. The fodder was assayed for the nutritional value...
Podjęto badania w celu określenia przydatności buhajów rasy belgijskiej biało-błękitnej do krzyżowania towarowego z krowami czarno-białymi. Analizowano: indeks unasiennień, liczbę wycieleń krów, długość trwania ciąży, masę ciała krów, ich kondycję po wycieleniu oraz masę ciała cieląt mieszańców po urodzeniu i ich żywotność. Wybrane krowy do inseminacji nasieniem 11 buhajów rasy belgijskiej biało-błękitnej...
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