Yolk sac utilization in ostrich (Struthio camelus) chicks.

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Publication Details

Author list: Mushi EZ, Binta MG, Chabo RG

Publisher: AOSIS

Publication year: 2004

Journal: Onderstepoort Journal of Veterinary Research (0030-2465)

Journal acronym: Onderstepoort J Vet Res

Volume number: 71

Issue number: 3

Start page: 247

End page: 9

Number of pages: -237

ISSN: 0030-2465

eISSN: 2219-0635

Languages: English-Great Britain (EN-GB)

Abstract

The mass of residual yolk sac expressed as a percentage of initial mass of the egg from which the chick hatched decreased sharply in the first 2 days post-hatching. A gradual reduction occurred between 3 and 10 days after which a sharp decline was noted between 11 and 13 days post-hatching. The highest number of chicks with unabsorbed yolk sac was noted on day 5 post-hatching followed by days 6 and 7. Chick mortality followed the same pattern. The dynamics, causes and clinical consequences of yolk sac utilization are discussed.

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