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The aim of this study was to detect heifers with dystocia using artificial neural networks (ANN). A total of 531 calving records of Holstein-Friesian heifers of Black-and-White strain and 8 diagnostic variables were used. The output variable was the class of calving difficulty: difficult or easy. Perceptrons with one (MLP1) and two (MLP2) hidden layers and radial basis function (RBF) networks were...
The aim of this study was to determine effects of genotype and selected environmental factors on colostrum production, intake, and efficiency in the cattle. The investigations were conducted on 67 dam-calf pairs. All cows were of Polish Holstein-Friesian breed, the Black-and-White variety (PHF-HO), whereas calves were sired by bulls of the following breeds: PHF-HO, Polish Holstein-Friesian of the...
Changes in texture, structural elements and functional properties of ST (m.semitendinosus) of pure breed BW cattle and their crosses with Charolaise (Cha), Marchigiana (Mar), Piemontese (Pie) and Chianina (Chi) beef cattle subjected to massaging were followed. Of all the groups of animals tested, the most delicate histological structure (the lowest fibre cross-section area, the thinnest perimysium...
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