Research has found that the highest milk yield is during 305 days of lactation. typical for first-calf cows obtained as a result of intraline selection, line Montvik Chieftain 95679, which amounted to 6839.23 kg of milk, which was reflected in the largest amount of milk fat and milk protein for this group of cows – 253.76 kg and 220.56 kg, respectively.
cows, breed, line, selection, lactation, live weight, dairy productivity
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