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Merck Manual
Veterinary Manual
The trusted provider of veterinary information since 1955

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VETERINARY PET
Developing embryo, fertile egg, chicken
fertile_egg_candled_with_developing_embryo_chicken_2_high
Developing embryo, fertile egg, chicken

    A fertile egg candled with a developing chicken embryo. Notice visualization of blood vessels around the developing embryo.

Courtesy of Dr. Yuko Sato.

In these topics
Laying and Reproduction in Backyard Poultry

Merck & Co., Inc., Rahway, NJ, USA (known as MSD outside of the US and Canada) is dedicated to using the power of leading-edge science to save and improve lives around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Vet Manual outside of North America.

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