Welfare and productivity of laying hens in commercial organic egg production systems in Denmark
نویسندگان
چکیده
منابع مشابه
Health and Welfare in Dutch Organic Laying Hens
From 2007-2008, data on animal health and welfare and farm management during rearing and laying periods were collected from 49 flocks of organic laying hens in the Netherlands. Our aim was to investigate how organic egg farms performed in terms of animal health and welfare and which farm factors affected this performance. The flocks in our study were kept on farms with 34 to 25,000 hens (averag...
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The current study investigated the effect of environmental stressors (i.e., weather changes) on Salmonella shedding in free-range production systems and the correlations with behavioral and physiological measures (i.e., fecal glucocorticoid metabolites). This involved longitudinal and point-in-time surveys of Salmonella shedding and environmental contamination on four commercial free-range laye...
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In cage-free egg production systems, concerns have been raised over hen mortality rates. High mortality is an obvious indicator of poor welfare, and problems should be addressed without delay. It is important to note, however, that mortality can vary substantially between hen flocks, and that some cage-free systems have healthy flocks that do not suffer substantial death losses. These systems c...
متن کاملEffect of diatomaceous earth on parasite load, egg production, and egg quality of free-range organic laying hens.
The effectiveness of diatomaceous earth (DE) as a treatment against parasites and to increase feed efficiency and egg production of organically raised free-range layer hens was evaluated in 2 breeds of commercial egg layers [Bovan Brown (BB) and Lowmann Brown (LB)] that differ in their resistance to internal parasitic infections. Half the hens of each breed were fed diets supplemented with DE (...
متن کاملEffects of Supplementing Laying Hens Diets with Organic Selenium on Egg Production, Egg Quality during Storage, Hatchery and S
This study was carried out at El Takamoly Poultry Project, Fayoum, Egypt,. A total number of 498 (450 breeder hens and 48 cocks) birds of Golden Montazah (GM) and Fayoumi (F) strains at 42 wks of age were used to evaluate the effects of two dietary levels of Se as Sel-Plex (0.1 or 0.2 mg/Kg diet) on breeder hens performance. Birds were divided randomly into 3 equal treatment groups of 83 birds ...
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ژورنال
عنوان ژورنال: NJAS: Wageningen Journal of Life Sciences
سال: 2006
ISSN: 1573-5214,2212-1307
DOI: 10.1016/s1573-5214(06)80018-7