![PERSISTENT RIGHT OVIDUCT. If the regression of the right Mullerian duct, that is embryonally present in female chickens as oviduct, does not occur, a cystic dilatation of this structure is seen, whose size varies from a long cystic formation to a big sac, filled with fluid: a/ functional left oviduct b/ persistent right oviduct](http://www.thepoultrysite.com/publications/images/image_Page_101_Image_0004.jpg)
![PERSISTENT RIGHT OVIDUCT. If the regression of the right Mullerian duct, that is embryonally present in female chickens as oviduct, does not occur, a cystic dilatation of this structure is seen, whose size varies from a long cystic formation to a big sac, filled with fluid: a/ functional left oviduct b/ persistent right oviduct](http://www.thepoultrysite.com/publications/images/image_Page_101_Image_0005.jpg)
551.552.PERSISTENT RIGHT OVIDUCT. If the regression of the right Mullerian duct, that is embryonally present in female chickens as oviduct, does not occur, a cystic dilatation of this structure is seen, whose size varies from a long cystic formation to a big sac, filled with fluid: a/ functional left oviduct b/ persistent right oviduct
![Absense of eyes](http://www.thepoultrysite.com/publications/images/image_Page_102_Image_0001.jpg)
553.Absense of eyes (anophthalmia) and cranial malformations are frequent malformations in newly hatched chickens.
![OPEN BODY CAVITIES. An additional skin formation (pouch) to the left laterocaudal abdominal wall, with part of the abdominal organs found within.](http://www.thepoultrysite.com/publications/images/image_Page_102_Image_0003.jpg)
554.OPEN BODY CAVITIES. An additional skin formation (pouch) to the left laterocaudal abdominal wall, with part of the abdominal organs found within.
![. POLYPODIA. The occurrence of more legs than normal is often seen in broilers. Such birds frequently survive up to the end of the fattening period.](http://www.thepoultrysite.com/publications/images/image_Page_102_Image_0001.jpg)
![. POLYPODIA. The occurrence of more legs than normal is often seen in broilers. Such birds frequently survive up to the end of the fattening period.](http://www.thepoultrysite.com/publications/images/image_Page_102_Image_0002.jpg)
555.556.. POLYPODIA. The occurrence of more legs than normal is often seen in broilers. Such birds frequently survive up to the end of the fattening period.