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| Fölsch, D. W.; Knierim, U.; Staack, M.. |
| Ab August 2005 muss die Bio-Geflügelfütterung laut EU-Bio-Verordnung (1804/1999/EG) zu 100 % mit ökologisch erzeugten Komponenten erfolgen. Für die Rationsgestaltung fallen hochwertige, konventionell erzeugte Eiweißträger weg. Es wurde geprüft, inwieweit gekeimter Weizen in 100 % Bio-Rationen zur Proteinversorgung von Küken, Jung- und Legehennen beitragen kann und ob diese Rationen bedarfsgerecht sind. In zehn Bodenhaltungs-Stallabteilen ohne Außenauslauf wurden jeweils 19 Hennen und ein Hahn zweier Herkünfte (Lohmann Tradition –LT-, ISA Brown) vom Schlupf bis zur 40. Lebenswoche (LW) bei einer Besatzdichte von 5 Tieren/qm (ab der 5. LW) gehalten. Acht Versuchsgruppen wurden kombiniert mit 100 % Bio-Ergänzer und Weizenkeimen (4 Gruppen) oder -körnern (4... |
| Tipo: Report |
Palavras-chave: Poultry; Feeding and growth. |
| Ano: 2004 |
URL: http://orgprints.org/6379/1/6379%2D02OE663%2Duni%2Dwiz%2Dknierim%2D2004%2Dkeimgetreide.pdf |
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| Keppler, C.; Weigand, V.; Staack, M.; Achilles, W.; Knierim, U.. |
| Organic pullets are reared with daylight and are not beak-trimmed. Therefore, certain provisions are needed in order to prevent feather-pecking and cannibalism. Respec-tive guidelines are set by the German Organic Associations. It was the goal of this study to investigate whether the higher rearing standards are associated with an increased labour demand compared to conventional rearing systems. Using a ques-tionnaire, data from 32 hen-houses (10 conventional and 6 organic barn systems, 10 conventional and 6 organic aviary systems) about duration and number of working procedures were collected and exemplary models calculated. Total labour demand was between 2.36 and 7.37 worker`s hours/100 pullets. It did not differ between or-ganic and conventional... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2007 |
URL: http://orgprints.org/9656/1/9656_Keppler_Vortrag.pdf |
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| Staack, M.; Fölsch, D.W.; Knierim, U.. |
| To examine whether germinated wheat contributes to the protein supply of organic chicks, pullets and hens and whether 100 % organic rations fulfil the birds’ nutrient requirements, hens of 2 hybrids were kept in 10 pens, each comprising 19 hens and 1 cockerel, from hatching to the 40th week of life. Experimental groups were fed with wheat sprouts (4 groups) or grains (4 groups) and 100 % organically produced supplementary feed. Two control groups received an all mash feed with up to 15 % of conventionally produced components. Protein supply did not improve as only changes in starch and sugar content were found in germinated wheat. The contents of vitamins (B1, B2, K, C) and linolenic acid content increased during germination. No significant... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth. |
| Ano: 2009 |
URL: http://orgprints.org/14121/1/STaack_14121.pdf |
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| Knierim, U.; Staack, M.; Gruber, B.; Keppler, C.; Zaludik, K.; Niebuhr, K.. |
| Feather pecking still presents a major problem in organic laying hen farming. In order to identify important risk factors during the laying period as well as during the rearing period in an exploratory epidemiological approach, we followed birds from 23 organic rearing units in Austria and Germany to 46 laying units. Management and housing conditions were recorded during one day visits in the 16th to 18th and 30th to 40th week of age, respectively. As an indicator of feather pecking, feather conditions of random samples of 30 hens per laying farm were assessed. Average feather scores from 0 (best) to 3 (worst) were calculated. The average score of 0.73 (± 0.44) was not significantly different from the score of 0.77 (± 0.33) from 54 conventional farms... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2008 |
URL: http://orgprints.org/11775/1/Knierim_11775_ed.doc |
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