Tackling the future challenges of Organic Animal Husbandry - vTI

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! Agriculture and Forestry Research, Special Issue No 362 (Braunschweig, 2012) ISSN 0376-0723 Download: www.vti.bund.de/en/startseite/vti-publications/landbauforschung-special-issues.html References Keppler, C., Staack.M., Pinent, T., Knierim, U. (2010): Grünauslauf für ökologisch aufgezogene Junghennen. Endbericht des Forschungantrages 2809OE025 an das Bundesministerium für Verbraucherschutz, Ernährung und Landwirtschaft über die Bundesanstalt für Landwirtschaft und Ernährung (BLE), 80p. Lugmair, A., Velik, M., Zaludik, K., Gruber, B., Thenmair, I., Zollitsch, W., Troxler, J., Niebuhr, K. (2005): Leitfaden zum Management von Legehennen in Freiland- und Bodenhaltung mit besonderer Berücksichtigung der Verhaltensstörungen Kannibalismus und Federpicken. Kontrollstelle für artgemäße Nutztierhaltung GmbH. 172
Abstract RAHMANN G & GODINHO D (Ed.) (2012): Tackling the Future Challenges of Organic Animal Husbandry. Proceedings of the 2 nd OAHC, Hamburg/Trenthorst, Germany, Sep 12-14, 2012 Les Bleues – a new approach to dual purpose chicken WERNER VOGT-KAUTE 1 , CARLO HORN 2 , JÖRG GROßE-LOCHTMANN 2 Öko-Beratungsgesellschaft mbH, Naturland Fachberatung, Germany, www.naturland.de, w.vogt-kaute@naturland-beratung.de Marktgesellschaft der Naturland Betriebe mbH, Germany, www.naturland-markt.de, c.horn@naturland-markt.de, j.grosse-lochtmann@naturland-markt.de In laying hens, hybrid strain male birds are killed as one day old chicks. Some initiatives try to use these male hybrid birds for fattening. The disadvantage to this is the bad feed to weight ratio, the low weight of the bodies and the small amount of breast meat these birds yield. The bodies of these chickens do not look like broilers. In our trials we used strains that are used in France for programs with slow growth. Because of their French origin and their blue feet we called the birds “Les Bleues”. They can be slaughtered after 90 days with a feed to weight ration of 1:3 and the meat quality is good. The new data that was collected by us in 2011 and 2012 is regarding the amount of eggs. The potential egg yield is between 240 and 250 compared to the 280 to 290 of a hybrid hen. The main challenge is for the young laying hens not to become too fat before the start of the egg laying period. 6 organic farms around Berlin have begun to produce these dual purpose chickens in small flocks for the regional market successfully. Key words: poultry, breeding, dual purpose chicken Introduction In laying hens, hybrid strain male birds are killed as one day old chicks. This is an ethical problem especially for the organic sector. (ifoam EU group, 2010). Some initiatives try to use these male birds of egg strains for fattening. The disadvantage to this is the bad feed to weight ratio, the low weight of the bodies and the small amount of breast meat these birds yield. The bodies of these chickens do not look like broilers and the consumer does not recognize these bodies as broilers. So the only chance for using these animals is processing (e.g. sausage, cans). In our trials we used strains that are used in France for programs with slow growth. Because of their French origin and their blue feet we called the birds “Les Bleues”. They can be slaughtered after 90 days with a feed to weight ration of 1:3 and the meat quality is good. But we did not have information regarding amount of eggs because these birds are only used for fattening in France (except the parent flocks). Results Meat A trial on fattening comparing with other slow growing fattening strains and with egg strains already was made in Austria. The growth of the Les Bleues was between the normally used slow growing fattening strains JA957/JA457 and the most promising old land races. The positive aspect is that the bodies looks like a broiler with sufficient amount of meat. The meat of these older birds does taste good but there has to be a certain amount of fat on the meat. Birds killed with an age older than 16 weeks can have the danger of lower meat qualtity because of meat with longer fibre structure. 173
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Sonderheft 362 Special Issue Tackli
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Landbauforschung vTI Agriculture an
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Foreword Organic animal husbandry s
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Introduction RAHMANN G & GODINHO D
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Abstract RAHMANN G & GODINHO D (Ed.
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Discussion RAHMANN G & GODINHO D (E
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Factors Plant Height (cm) RAHMANN G
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Results RAHMANN G & GODINHO D (Ed.)
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FEC adjusted for dry matter 12000 1
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Kg liveweight (mean) RAHMANN G & GO
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348 Herwart Böhm (Hrsg.) (2011) Op
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