ISSN 2285-5750, ISSN CD-ROM 2285-5769, ISSN-L 2285-5750, ISSN Online: 2393 – 2260
 

EXPERIMENTS ON A HOLSTEIN-FRIESIAN LINE ON THE EFFECT OF SELECTION FOR ROBUSTNESS ON FEEDING BEHAVIOUR

Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Mugurel COLA, Florica COLA

The consumption behavior of fodder in kg dry substance (SU) per day was followed for the duration of the fodder consumption in minutes per day, and the duration of the rumination in minutes per day, at 6 first-calf heifers in each group for 3 consecutive days. During the stall period, the group 1 first-calf heifers had higher fodder consumption than the group 2 first-calf heifers. The SU consumption was 19.5 kg/day in the group 1 and 17.2 kg/day in the first group 2. The duration of fodder consumption was higher in group 1 (robust first-calf heifers) compared to the duration of fodder consumption in group 2 (256 vs. 236 minutes per day). The average time to consume one kg of SU was on average 13.12 minutes for group 1 of animals and 13.70 minutes for group 2 of animals. The ideal cow for pasturing systems is the cow that consumes large quantities of green mass and efficiently transforms it into high milk production per kg live weight. The first-calf heifers in group 2 are slightly more efficient in pasturing than the robust first-calf heifers. Grass consumption was, on average, 16.4 kg Dry Substance in group 2 of animals compared to group 1 of animals 14.2 kg SU. The difference between the two consumptions 22.2 kg SU is statistically significant (p<0.05).

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© 2019 SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE. To be cited: SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE.

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