Influence of supplementary feeding on feed intake and milk production of dairy cows on pasture | Einfluss der Ergänzungsfütterung anuf Futteraufnahme und Milchleistung bei der Weidehaltung von Milchkühen
2009
Häusler, J., Raumberg-Gumpenstein (Austria). Lehr- und Forschungszentrum | Resch, R. | Gruber, L. | Steinwidder, A. | Pötsch, E. | Guggenberger, T.
Supplementary feeding to pasture was the main topic of an experiment with 32 dairy cows in Raumberg-Gumpenstein. The different supplementary feeding brought both, a significant effect on feed intake and nutrient supply as well as on the performance of milk. In full pasture group a rate of 55.5% pasture forage resulted in a milk yield of 6,778 kg ECM. The additional feeding of maize silage increased the milk yield up to 7,089 kg ECM. Supplementary feeding with concentrates (500 kg DM) gave rise to 6,966 kg ECM while additional hay brought a decrease of performance (5,798 kg ECM). To show the effect of the different days of lactation we created four (beginning) groups. Based on 14 days of lactation before pasture period in group 1 the days of lactation increased about 28 days per group up to 97 days in group 4. Between the 4 (beginning) groups no significant effect on feed intake, nutrient supply and milk yield could be found. While effective yearly milk yield decreased from those cows, which calved in April, the milk ingredients increased, so the milk yield in ECM was, except of group 3 (calving in February), at a same level. A lower feed intake up to 500 kg DM in the groups 3 and 4 (calving in February and January) could be the reason. Cows, which calved later, showed a higher performance in pasture phase, but during pasture phase the proportion of pasture forage on total forage increased from 63 % in group 1 up to 76 % in group 4.
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