The right gonad, which has yet to be defined as an ovary, testes, or both (called an ovotestis), typically remains dormant. Certain medical conditions—such as an ovarian cyst, tumor or diseased adrenal gland—can cause a chicken's left ovary to regress. In the absence of a functional left ovary, the dormant right sex organ may begin to grow, according to Mike Hulet, an associate professor at Penn State University's department of poultry science.
"If the activated right gonad is an ovotestis or testes, it will begin secreting androgens," Hulet told Life's Little Mysteries. Androgens are the class of hormones that are largely responsible for male characteristics and are normally secreted by the testes. "The production of androgen would cause the hen to undergo behavioral changes and make it act more like a rooster."
The hen does not completely change into a rooster, however. This transition is limited to making the bird phenotypically male, meaning that although the hen will develop physical characteristics that will make her look male, she will remain genetically female. So while the hen will no longer lay eggs, she won't be fathering any offspring, either.
Zitieren
, aber man hört immer wieder von solchen lustigen Fällen. 
Themenstarter
. Bei der Überschrift hatte ich übrigens eine Sekundenschaltung zur Loveparade. Ich muss jedesmal wieder lachen, kleines Kopfkino eben, Huhn geht mal so richtig aus sich raus. Eines meine Zwerglachse kräht auch, ich kann aber nicht herausfinden welche es ist. Äusserlich ist nichts zu erkennen und keine outet sich, wenn ich im Stall bin. Den Hahn stört es nicht, er scheint das zu ignorieren, die anderen Hennen bleiben offensichtlich auch unbeeindruckt
Zitat von Liesl
Lesezeichen