Yolk sac utilization in ostrich (Struthio camelus) chicks : research communication | Zendy

E.Z. Mushi | Zendy; M G Binta | Zendy; R G Chabo | Zendy

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Yolk sac utilization in ostrich (<i>Struthio camelus<i/>) chicks : research communication

Author(s) -

E.Z. Mushi,

M G Binta,

R G Chabo

Publication year - 2004

Publication title -

onderstepoort journal of veterinary research

Language(s) - English

Resource type - Journals

eISSN - 2219-0635

pISSN - 0030-2465

DOI - 10.4102/ojvr.v71i3.267

Subject(s) - yolk sac , hatching , struthio , yolk , biology , zoology , andrology , anatomy , medicine , embryo , food science , fishery

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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