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Efektywnosc hodowli roznych uzytkowych typow bydla w jednakowych warunkach technologicznych


, : Efektywnosc hodowli roznych uzytkowych typow bydla w jednakowych warunkach technologicznych. Biuletyn Informacyjny Instytut Zootechniki 40(2): 147-158

The influence of the intensity of rearing of heifers on milk yield of the herd of Holstein (H) and Czech Pied (C) cattle was evaluated in the choice agricultural farm. The influence of choice factors (breed, number of lactation, age of first insemination, weight in ages of 3, 6, 9, 12 and 15 months) on milk performance (quantity of milk and content component milk, age of first calving).

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