奇形怪状的鸡蛋,你见过吗？.doc

奇形怪状的鸡蛋,你见过吗？
奇形怪状的鸡蛋：Have you ever seen these odd eggs? [图] DOUBLE YOLK EGGS（双黄蛋）:
Double Yolkers appear when ovulation occurs too rapidly, or when one yolk somehow gets "lost" and is joined by the next yolk. Double yolkers may be by a pullet whose productive cycle is not yet well synchronized. They're occasionally laid by a heavy-breed hen, often as an inherited trait.
The photo below shows a double yolk egg laid by either a Barred Rock or Rhode Island Red hen owned by Shelley Madden-Kemp, near Fort Worth, Texas on January 29, 2005. The left photo shows the size of the double yolker next to a reguar sized BR/RIR egg and the right photo shows the double yolker broken open in a soup YOLK（无黄蛋）:
No-yolkers are called "dwarf", "wind" [or, more commonly, "fart"] an egg is most often a pullet's first effort, produced before her laying mechanism is fully geared up. In a mature hen, a wind egg is unlikely, but can occur if a bit of reproductive tissue breaks away, stimulating the egg producing glands to treat it like a yolk and wrap it in albumen, membranes and a shell as it travels through the egg tube. You can tell this has occurred if, instead of a yolk, the egg contains a small particle of grayish tissue. In the old days, no yolkers were called "cock" eggs. Since they contained no yolk and therefore can't hatch, our forebears believed they were l