ISSN: 2776-0979, Volume 3, Issue 12, Dec., 2022
901
Conclusions
The level of milk yield in the first lactation of Holstein cows depends on the live weight.
Group III cows with an average live weight of 489.7 kg in lactation I had an average
milk yield of 450.3 kg, group I and an average live weight of 470.1 kg of group II cows
282.0 and 134.9 kg, respectively, milk fat consumption 10,8 and 4.4kg, 4% milk were
characterized by high values of 243.6 and 209.7 kg, respectively.
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