RESEARCH REGARDING THE CHARACTERISTICS OF MILK PRODUCTION OF HOLSTEIN-FRIESIAN COWS IN CONDITIONS OF SOME FARMS FROM MOLDOVIAN REGION

Mihaela Ivancia, Nicoleta Roşca (Dulgheru), Gh. Nacu

Abstract
   This research aims to determinate the milk production characteristics for the standard lactation in Holstein-Friesian cattle based on data from six farms from Moldavian region. The following characters were observed: age at first calving, milk yield, fat yield, fat percentage, protein yield and protein percentage. The primary data was processed according to the ICAR guidelines, and later was processed statistically through the S.A.V.C. software. At the end of processing, the following averages were obtained: 731.8 days – 868.49 days for the age at first calving, 7304.86 kg – 10596.08 kg for the milk yield, 3.71% - 4.45% for the percentage of fat, 312.8 kg – 406.13 kg for fat yield, 3.19% - 3.31% for protein percentage and 237.6 kg – 337.51 kg for the protein yield.

Key words: Holstein-Friesian, age at first calving, milk, protein, fat