A Comparison of the Growth of Chicks Behind Window Glass and a Glass Substitute
1926; Elsevier BV; Volume: 6; Issue: 2 Linguagem: Inglês
10.3382/ps.0060062
ISSN1525-3171
Autores Tópico(s)Animal Nutrition and Physiology
ResumoSince the discovery that certain disorders such as rickets in children, dogs, rats, etc., and leg weakness in chicks could be corrected by irradiation with light containing ultra-violet rays, a great deal of experimental work has been carried on. The practical application of the knowledge resulting from these investigations has opened up a new field of poultry production, which up to a short time ago had been a series of unsuccessful attempts to raise chicks in confinement. Following the discovery that window glass filtered out these necessary rays, attempts were made to find substitutes for glass which would allow these short invisible solar light waves to pass through. Quartz glass was found to allow sufficient transmission of these rays to protect rats against rickets, but the expense in manufacturing made this kind of glass prohibitive to commercial poultrymen, for such uses as equipping brooder houses with quartz glass windows to . . .
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