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| Brügemann, Kerstin; Jaeger, Maria; Ruebesam, Karin; König von Borstel, Uta; König, Sven. |
| Breeding goals of Holstein dairy cattle in New Zealand (NZL) focus on traits reflecting adaptation to pasture-based systems. Due to high prices for concentrates, and advantages for cattle health and welfare, low input grazing systems become important in regions of North-West Germany. The present study addresses the hypothesis that progeny of NZL-Holstein sires are superior in 30 German grassland farms compared to offspring of Holstein sires being progeny tested in German indoor systems. A research design was implemented to create three different genetic groups (F1 generation) within herds on the basis of a German Holstein cow (GHC) population: Group 1=GHC x NZL sires, group 2=GHC x GH sires, group 3=GHC x GH_pasture sires. GH_pasture sires represent bulls... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Breeding and genetics; Health and welfare. |
| Ano: 2015 |
URL: http://orgprints.org/29326/1/eaap2015_bruegemann_2708.pdf |
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| Jaeger, Maria; Brügemann, Kerstin; König von Borstel, Uta; Rübesam, Karin; König, Sven. |
| Extract from attached abstract: ... results from the present study do not justify general utilization of HF sires from NZL to improve productivity and functional traits in grassland systems in Germany. Heterogeneous results were found with e.g. advantages for NZL_HF regarding health composites of feet and legs, but in contrast impaired udder health. The broad pool of German Holstein sires should be used to select specific sires for distinct environments and breeding goals, e.g. HF_DEU_P for grassland systems. Furthermore, the present study revealed genetic background for traits that are generally related to cattle husbandry and farm management, e.g. the welfare indicator THS. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Breeding and genetics; Health and welfare. |
| Ano: 2015 |
URL: http://orgprints.org/29327/1/Abstract_Jaeger%20Maria_DGfZ2015.pdf |
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