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Weißmann, Friedrich; Baulain, Ulrich; Brade, Wilfried; Werner, Daniela; Brandt, Horst. |
In der ökologischen Schweinemast wird immer wieder über die Eignung alter und moderner Schweinegenotypen sowie die Notwendigkeit eigener Zuchtprogramme diskutiert. Um beide Punkte beantworten zu können, sind Informationen über das Ausmaß möglicher Genotyp- Umwelt-Interaktionen bei relevanten Leistungsmerkmalen notwendig. Daher wurden 682 Schweine von 7 merkmalsdifferenzierten Genotypen auf zwei Leistungsprüfungsanstalten in jeweils ökologischer und konventioneller Haltung auf Merkmale der Mastleistung sowie Schlachtkörper- und Fleischqualität geprüft. Es zeigte sich, dass in der Mastleistung und der Schlachtkörperqualität sowohl die modernen den alten Genotypen als auch die konventionellen den ökologischen Prüfbedingungen überlegen waren. Beim... |
Tipo: Book chapter |
Palavras-chave: Pigs. |
Ano: 2010 |
URL: http://orgprints.org/17012/1/509_lbf_sh335_02_Weissmann_et_al%2DOEL.pdf |
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Brandt, Horst; Baulain, Ulrich; Brade, Wilfried; Lapp, Judith; Weißmann, Friedrich. |
The aim of the present study including 190 organic fattening pigs of varying Duroc gene portion (0 %, 25 %, 50 %, and 75 %) was to analyze various meat and fat quality characteristics in order to deduce the optimal Duroc gene percentage in relation to different marketing goals. Increasing Duroc gene portions resulted (i) in increasing intramuscular fat contents, (ii) in improved meat quality characteristics (sensory properties, pH, electrical conductivity), (iii) in slightly increasing levels of saturated fatty acids, and (iv) in decreasing levels of mono-unsaturated fatty acids. It is concluded that Duroc gen portion should exceed 50 % only in marketing systems with a payment system including meat quality criteria. |
Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics; Pigs. |
Ano: 2013 |
URL: http://orgprints.org/21203/1/21203_Brandth.pdf |
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Brandt, Horst; Baulain, Ulrich; Brade, Wilfried; Werner, Daniela; Weissmann, Friedrich. |
The suitability of indigenous or modern genotypes for organic conditions and the necessity of a specific organic breeding programme are intensively discussed in the organic pig fattening scene. To clarify both items information about Genotype-Environment-Interaction (GEI) is necessary. Therefore 682 pigs of 7 different genotypes with widely spread protein synthesis capacity were tested for growth performance and carcass quality under conventional and organic environments at two performance testing stations in order to verify GEI. The modern genotypes were superior to the old ones, all genotypes achieved significantly better results within the conventional environment and there were significant interactions between genotype and environment for all criteria... |
Tipo: Conference paper, poster, etc. |
Palavras-chave: Pigs. |
Ano: 2009 |
URL: http://orgprints.org/13985/1/Brandt_13985.pdf |
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Brandt, Horst; Werner, Daniela; Baulain, Ulrich; Brade, Wilfried; Köhler, Peter; Weißmann, Friedrich. |
Seven different pig breeds were kept under conventional and under organic feeding and housing conditions on two performance testing stations to analyse genotype-environment interactions for meat quality traits. Genetically controlled physical pork quality traits like pH- and EC-values are unaffected by both housing and feeding systems and no genotype-environment interaction could be found. In contrast, chemical meat characteristics like intramuscular fat content and fatty acid pattern are strongly influenced by genotype and feeding and a significant genotype-environment interaction. But no considerable reranking could be observed. The differences are caused by the differences in energy and amino acid supply between environments and variable lean meat... |
Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics. |
Ano: 2011 |
URL: http://orgprints.org/17515/3/Brandt_17515.pdf |
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