Yolk Sac

Small and Backyard Flocks October 29, 2012 Print Friendly and PDF

The membrane that surrounds the yolk in the incubating egg

Figure 1. Broken-out incubated chicken egg suspended in water. Source: Jacquie Jacob, University of Kentucky.

For more information:

Incubation and embryonic development. University of Illinois.

Embryology in the classroom. Pennsylvania State University.

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USDA / NIFA

This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.