Work

The Influence of Vitamin D on Hatchability and Egg Production

Year: 1932

Type: article

Abstract: POULTRYMEN have known for some years that the hatchability of eggs produced during the winter months—the incubation season—tended to be low, especially if the birds were confined indoors. A marked improvement occurred in the spring when the birds were allowed outdoors in the sunshine. Since this improvement paralleled fairly closely the increase in amount of ultra-violet light in sunlight, many workers soon established a relationship between hatchability and the antirachitic vitamin. In general, the sources of vitamin D have been cod liver oil. Recently investigators have used ultra-violet irradiation from artificial sources either directly or indirectly by irradiation of the ration. Glass substitutes, which allow part of the ultra-violet from sunlight to penetrate to the birds, have also been investigated to some extent. The experiments reported here were planned to compare the influence of vitamin D from two sources—cod liver oil and irradiated ergosterol (viosterol)—on hatchability . . .

Source: Poultry Science

DOI: 10.3382/ps.0110261

Authors: H.D. Branion, J.B. Smith

Institution: University of Guelph

Language: English

Topic: Animal Nutrition and Physiology

Subfield: Animal Science and Zoology

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $2,600