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| Registros recuperados: 18 | |
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| Slagboom, Margot; Wallenbeck, Anna; Hjortø, Line; Sørensen, Anders Christian; Thomasen, Jørn Rind; Kargo, Morten. |
| Six different breeding goal (BG) scenarios were developed and simulated for organic and conventional dairy production, to study the effect on genetic change for specific traits. The first two BGs (BG1 and BG2) were based on economic weights from SimHerd simulations for a conventional and an organic dairy system in Denmark. The third BG (BG3) was based on weights derived from a farmer preference survey for organic farmers. The fourth BG (BG4) was based on the four organic principles defined by the IFOAM, and on the results of a questionnaire that was sent out to farmers, researchers and experts in the area of organic dairy husbandry. The fifth and sixth BGs (BG5 and BG6) were based on BG4, but altered to put more emphasis on roughage consumption and disease... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Breeding and genetics. |
| Ano: 2017 |
URL: http://orgprints.org/33062/1/Slagboom_2017_BreedingGoalForOrganicDairyProduction.pdf |
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| Kargo, Morten; Hjortø, Line; Slagboom, Margot; Thomasen, Jørn Rind; Buitenhuis, Albert Johannes; Hein, Lisa; Pedersen, Jørn; Munk, Arne. |
| This presentation provides an overview of the results from the projects "The optimal cow" and "SOBcows". The aim of "The optimal cow" is to derive economic values for breeding goal traits in four different production systems, among them an organic production system. The aim of "SOBcows" is to enhance the size and the profitability of the organic dairy production by adapting the breeding material to organic production circumstances and by indicating sustainable methods for sustainable niche production based on animals with specific genetic characteristics |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Breeding and genetics. |
| Ano: 2016 |
URL: http://orgprints.org/30151/1/Kargo_2016_BreedingGoalsSOBcows.pdf |
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| Slagboom, Margot; Wallenbeck, Anna; Rydhmer, Lotta; Thomasen, Jørn Rind; Kargo, Morten. |
| Organic dairy farming (ODF) is different from conventional dairy farming in management practices, but so far the same breeding goal (BG) is used, based on the same economic models (EM). However, ODF is based on the principles of organic agriculture defined by the IFOAM, which are not easily interpreted in economic terms and it may be uestionable to use a BG for ODF based on EM. In this study we set up three BGs for ODF in Denmark, one based on the principles of organic agriculture, one focusing on roughage consumption and feed efficiency, and one focusing on disease resistance. A questionnaire and desired gains index were used to set up the BGs. Correlations between these BGs and BGs based on EM were low. Which BG would be best suitable to use for ODF in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems; Dairy cattle; Breeding and genetics. |
| Ano: 2018 |
URL: http://orgprints.org/33256/1/Slagboom%20et%20al%20WCGALP%202018.pdf |
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| Slagboom, Margot; Wallenbeck, Anna; Rydhmer, Lotta; Thomasen, Jørn Rind; Kargo, Morten. |
| Organic dairy farming (ODF) is different from conventional dairy farming in management practices, but so far the same breeding goal (BG) is used, based on the same economic models (EM). However, ODF is based on the principles of organic agriculture defined by the IFOAM, which are not easily interpreted in economic terms and it may be questionable to use a BG for ODF based on EM. In this study we set up three BGs for ODF in Denmark, one based on the principles of organic agriculture, one focusing on roughage consumption and feed efficiency, and one focusing on disease resistance. A questionnaire and desired gains index were used to set up the BGs. Correlations between these BGs and BGs based on EM were low. Which BG would be best suitable to use for ODF in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Breeding and genetics. |
| Ano: 2018 |
URL: http://orgprints.org/33030/1/Slagboom_2018_BreedingGoalsForOrganicDairyFarming.pdf |
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| Slagboom, Margot; Kargo, Morten; Edwards, David; Sørensen, Anders Christian; Thomasen, Jørn Rind; Hjortø, Line. |
| In dairy cattle breeding, breeding goals (BG) are developed and subsequently a selection index that farmers want to use. Therefore it is important to take their preferences for BG traits into account. Two production systems that are expected to influence farmer preferences for BG traits are organic and conventional systems. The aim of this study was to characterize preferences of organic and conventional Danish dairy farmers for improvements in BG traits for Holstein cattle. A survey was established to characterize preferences for improvements in ten traits, by means of pairwise rankings using the online software 1000Minds. These pairwise rankings were based on equal economic worth of trait improvements. The survey was filled in by 106 organic and 290... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics. |
| Ano: 2016 |
URL: http://orgprints.org/30126/1/Slagboom_2016_BreedingGoalHolsteinPoster.pdf |
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| Slagboom, Margot. |
| In animal breeding, breeding goals are defined to give relative importance to certain traits, usually based on economic weights (Groen et al., 1997). In Denmark, Finland, and Sweden, the Nordic Total Merit index (NTM), based on common economic weights, is used as the breeding selection tool in dairy production (Kargo et al., 2014). Breeding goals are defined for specific production systems and circumstances. To develop a breeding goal that farmers want to use, it is important to take the objectives of farmers into account. Setting up a breeding goal that does not correspond to the preferences of farmers will make little sense (Nielsen et al., 2014). These preferences can be defined by using farmer choice experiments, for example using conjoint analysis... |
| Tipo: Report |
Palavras-chave: Breeding and genetics. |
| Ano: 2017 |
URL: http://orgprints.org/31390/1/Margot_Slagboom_2017_Progress%20report.pdf |
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| Slagboom, Margot; Kargo, Morten; Edwards, David; Sørensen, Anders Christian; Thomasen, Jørn Rind; Hjortø, Line. |
| The overall aim of this research was to characterize the preferences of Danish dairy farmers for improvements in breeding goal traits. The specific aims were (1) to investigate the presence of heterogeneity in farmers’ preferences by means of cluster analysis, and (2) to associate these clusters with herd characteristics and production systems (organic or conventional). We established a web-based survey to characterize the preferences of farmers for improvements in 10 traits, by means of pairwise rankings. We also collected a considerable number of herd characteristics. Overall, 106 organic farmers and 290 conventional farmers answered the survey, all with Holstein cows. The most preferred trait improvement was cow fertility, and the least preferred was... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; Breeding and genetics. |
| Ano: 2016 |
URL: http://orgprints.org/30362/1/Slagboom_2016_FarmerPreferences.pdf |
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| Slagboom, Margot; Kargo, Morten; Edwards, David; Sørensen, Anders Christian; Thomasen, Jørn Rind; Hjortø, Line. |
| The aim of this study was to characterize preferences of farmers with Red Danish Cattle (RDC) or Jersey herds. A breed-specific survey was established to characterize preferences of farmers for improvements in ten traits, by means of pairwise rankings using the online software 1000Minds. These pairwise rankings were based on equal economic worth of trait improvements. The RDC-survey was filled in by 87 farmers and the Jersey-survey by 76 farmers. Both RDC and Jersey herds had the highest preference for improvements in mastitis, followed by milk production. The lowest preference was given to calving difficulty. By means of a cluster analysis distinct clusters of farmers were identified and named according to the trait improvements that were the most... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics. |
| Ano: 2016 |
URL: http://orgprints.org/30982/1/Slagboom_2016_BreedingGoalRedAndJerseyPresentation.pdf |
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| Registros recuperados: 18 | |
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