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Genetic parameters of body weight in young Polish Red-and-White Lowland and Polish Black-and-White Lowland cattle



Genetic parameters of body weight in young Polish Red-and-White Lowland and Polish Black-and-White Lowland cattle



Prace i Materiay Zootechniczne (30): 35-52



Monthly body weights from birth to 15 months of age were recorded for 3224 prospective sires, 6108 fattened bulls and 14 872 heifers of the 2 breeds. The hsuperscript 2s and their standard errors are tabulated for body weights and daily gains at the different ages: for body weight and daily gain, the highest hsuperscript 2s (0.54+or-0.19 and 0.65+or-0.21) were obtained for Polish Red-and-White Lowland prospective sires at 15 mth of age.

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