Feasibility of artificial light regimes to increase the vitamin D content in indoor-laid eggs
| Autor: | Eberhard von Borell, Monika Wensch-Dorendorf, Corinna Wassermann, Katrin Thamm, Julia Kühn, Alexandra Schutkowski, Gabriele I. Stangl, Stephan Ebschke |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Ultraviolet Rays
Eggs Biology Furnished cages 03 medical and health sciences Animal science Stocking Vitamin D and neurology Animals Animal Husbandry Vitamin D skin and connective tissue diseases Ultraviolet radiation Lighting Ovum 030304 developmental biology Population Density Sunlight 0303 health sciences integumentary system Artificial light 0402 animal and dairy science Ultraviolet b 04 agricultural and veterinary sciences General Medicine Housing Animal 040201 dairy & animal science Animal Science and Zoology Chickens |
| Zdroj: | Poultry Science. 98:5177-5187 |
| ISSN: | 0032-5791 |
| DOI: | 10.3382/ps/pez234 |
| Popis: | Vitamin D insufficiency is prevalent worldwide. Recently, we showed that exposure of laying hens to sunlight or artificial ultraviolet B (UVB) light is an efficient strategy to increase the vitamin D content in eggs. In the current study, using 2 different chicken genotypes and stocking densities, we addressed the question of whether different UVB-emitting regimes work under real indoor housing conditions in a floor system or in furnished cages. Here, we found a 3.7-fold increase in the egg vitamin D content in Lohmann Selected Leghorn hens and a 4.2-fold increase in Lohmann Brown hens after UVB exposure for 6 h/d. The data further reveal that UVB exposure under high stocking density is equally effective compared to that at low stocking density. The different light regimes were not associated with changes in the behavior of these animals. To conclude, artificial UVB-emitting light regimes are a practical strategy to increase the vitamin D content in indoor-laid eggs. |
| Databáze: | OpenAIRE |
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