Call start-abdominal abnormality functional that is characterized by the appearance of eggs and immature in the abdominal cavity, with the attendant consequences that are harmful to the layers.

The most obvious symptoms typically involve intra-abdominal pain the attitude penguin, in which the birds tend to put the body in a vertical position, and the dilatation of the abdomen.

In addition, the birds appear sad or lethargic; they sometimes rest on their metatarsals, with their hind legs splayed wide apart, and move very little.

They typically have mottled plumage on their abdomen, and their cloaca is contracted. They do not lay eggs and eat very little.

The process how it is produced:

The start-abdominal or the inability of the infundibulum to pick up the follicle ovulated increases with age.

When you approach ovulation, the infundibulum begins to be infarcted with blood and moved in a movement of wave conditions, towards the vicinity of the follicle ovulated.

The follicle is absorbed by the infundibulum immediately before ovulation.

This fantastic process is under hormonal control and nervous. Apparently, as the birds get older, a failure occurs in the coordination of this activity of the infundibulum so well tuned, this being the cause of the follicles ovulados to enter the abdominal cavity rather than in the oviduct, which gives rise to the call start-abdominal.

The decrease in production eggs with age it constitutes an important problem of the reproduction.

The changes that occur due to aging of the birds are such as:

• An increase in the interval between ovulations.
• A decrease of the accommodation of the follicle within the sequence of ovulation.
• An increase of its degeneration.
• The deterioration of the thickness of the shell and the quality of the egg and a higher incidence of start-abdominal.

For this, it would be essential and would be a great help in the identification of the basic mechanisms that cause these marked physiological changes.