Comparison of dairy farming systems: barn-keeping v pasture-based keeping - Feed, performance and efficiency
2011
Hofstetter, P. | Petermann, R., Berufsbildungszentrum Natur und Ernaehrung BBZN, Schuepfheim (Switzerland) | Frey, H. | Gut, W. | Herzog, L. | Kunz, P.
The aim of this study was to compare barn-keeping (BK) to pasture-based-keeping (PK) systems in dairy farming. We established two herds which were kept under the same conditions and with an equal agricultural area (AA) on the same experimental farm from 2008 to 2010. The BK herd consisted of 12 Swiss Holstein-Friesian and 12 Brown Swiss cows which were kept in a free-stall barn and fed with a part-mixed ration composed of maize silage, grass silage and protein concentrate.[...]Winter hay, harvested from the same pasture and later barn ventilated, were offered ad libitum in the indoor period after the calving. These cows produced 5,681 kg ECM per lactation and 434,9 kg milk fat and protein per standard lactation having been fed 285 kg of air-dried concentrate. The calving interval and the empty time of the PK cows (BK: 121,3 v. PK: 85,0 days, P0,01) were shorter. The BK herd yielded 12,717 kg ECM/ha AA/year and the PK herd 10,307 kg ECM/AA/year. In conclusion, the productivity and the efficiency of the BK herd were higher compared to the PK herd due to the higher energy intake per kg feed and the higher nutrient intake postpartum.
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Эту запись предоставил Agroscope Reckenholz-Tänikon Research Station