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Factors for predicting 305-day milk, fat and protein yields from part-lactations of Red-and-White Lowland and Black-and-White Lowland cows in SW Poland



Factors for predicting 305-day milk, fat and protein yields from part-lactations of Red-and-White Lowland and Black-and-White Lowland cows in SW Poland



Roczniki Nauk Rolniczych, B 101(2): 87-107



25 709 305-day lactation records for milk and fat yield, and 11 064 records for protein yield of Polish Red-and-White Lowland and 23 333 records for milk and fat, and 6074 records for protein of Polish Black-and-White Lowland cows were classified according to age (25-96 months, 25 classes) and season (6).

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Correction factors for predicting milk, milk fat and milk protein production in the 305-day lactation from part-lactation yields of Polish Red-and-White Lowland and Polish Black-and-White Lowland cows from southwest Poland. Roczniki Nauk Rolniczych, B 101(2): 87-105, 1981

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