Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-60099
Thomet, P; Piccand, V; Schori, F; Troxler, J; Wanner, M; Kunz, P (2010). Efficiency of Swiss and New Zealand dairy breeds under grazing conditions on commercial dairy farms. In: Schnyder, H; Isselstein, J; Taube, F; Auerswald, K; Schellberg, J; Wachendorf, M; Herrmann, A; Gierus, M; Wrage, N; Hopkins, A. Grassland in a changing world. Proceedings of the 23rd general meeting of the European Grassland Federation; Kiel, Germany, August 29th - September 2nd 2010. Duderstadt, DE, 1018-1020. ISBN 978-3-86944-021-7.
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The objective of the study was to investigate over three years (2007 – 2009) the attributes of cows adapted to a pasture-based seasonal milk production system (New Zealand Holstein Friesian) under Swiss conditions and to compare them with Swiss breeds. For this purpose, pairs of Swiss (CH) and New Zealand (NZHF) cows were established (100 cows in total) with similar age and calving date on 15 commercial farms. Body weight (BW) in the first and second lactations were higher in CH cows than in NZHF cows (in 2007, 544 vs. 477 kg, P<0.001; in 2008, 578 vs. 517 kg, P<0.001). Milk yield was similar in CH and NZ cows for the initial two years but the milk of NZ cows had higher fat and protein content. The NZ cows produced more energy corrected milk (ECM) in the second lactation than the CH cows (6017 vs. 5470 kg, P< 0.001). As a consequence, the efficiency (ECM per metabolic BW, kg kg-1) was higher in NZ than in CH cows in both years (2007, 49.7 vs. 44.2, P<0.001; 2008, 55.6 vs. 46.6, P<0.001). It is therefore concluded that New Zealand Holstein Friesians are more efficient in a pasture-based milk production system than Swiss breeds.
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|Item Type:||Book Section, not refereed, original work|
|Communities & Collections:||05 Vetsuisse Faculty > Institute of Animal Nutrition|
|Dewey Decimal Classification:||570 Life sciences; biology
|Deposited On:||18 Mar 2012 19:55|
|Last Modified:||18 Oct 2012 05:02|
|Publisher:||Mecke Druck und Verlag|
|Series Name:||Grassland Science in Europe|
|Free access at:||Related URL. An embargo period may apply.|
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