M. Gehrke, A. Sawa, J. Jaśkowski, B. Jaśkowski, Magdalena Herudzińska, Jakub Kulus
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Influence of feto-pelvic disproportion on milk cows fertility
The aim of the study was to evaluate relations between feto-pelvic proportion and further fertility of milk cows, select proportions and critical values of disproportion best predicting cows with lower fertility as a result of difficult calving as well as to evaluate fertility of cows selected on the basis of chosen criteria. The study was carried out on black-and-white and red-and-white Polish Holstein-Friesian cows in six farms diversified by the number of livestock (from 10 to 20 to over 180 cows) and milk yield (from 6.563 –
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