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Abstract

One of the obvious differences between birds and mammals is that there is no well-defined estrous cycle or pregnancy. Birds are oviparous and the embryo must have everything it needs when the egg is laid. As a result there are significant modifications in the reproductive physiology and the anatomy ...

Author(s)
Johnson, P. A.
Publisher
Comstock Publishing Associates, Ithaca, USA
Citation
Dukes' physiology of domestic animals, 2004, Ed.12, pp 742-753