Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Mugurel COLA, Florica COLA
After the first 7 days, the primiparous cows milked three times a day achieved 20.00 kg milk postpartum, corrected at 3.5% fat, while the cows milked twice a day achieved an average production of 17.10 kg milk postpartum, corrected at 3.5% fat. There is an additional quantity of 2.9 kg milk at the primiparous cows milked three times a day (an increase of 16.9%). Statistically analysed, this increase is distinctly significant (P<0.01). After 21 days of experiments, the average milk production of the primiparous cows milked twice a day reaches 19.15 kg milk with 3.5% fat, and the average milk production of the ones milked three times a day reaches 20.50 kg milk with 3.5% fat; for the latter case, there is a decrease of production of 3.8% compared to the previous lapse of time, probably due to certain changes of the physiological status. After 28 days of experiments, the average production of the primiparous cows milked three times a day reached 22.80 kg milk with 3.55 fat, and the average production of the ones milked twice a day reached 18.85 kg milk with 3.5% fat, registering thus a difference of 2.95 kg milk (14.8%). Statistically analysed, this difference is distinctly significant (P<0.01).
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