Rumpless and Vitamin D

[trash80]

Quote:
Because UV rays are required to make Vitamin D, sunlight cannot penetrate the feathers.

Most animals have patches of less coating, eg the wattles, comb.
There must be a reason that the skin can produce vit D.
I mean marginal production.

Hence my question for the Rumpless, since they do not have the oil gland.

 

[trash80]

Re: Rumpless,

The Araucana is a challenging breed that combines the unusual traits of tufts, blue eggs and rumplessness. Tufts are unique to Araucanas, and each is composed of a group of feathers that grow from a protruding flap of skin located near the ear, called a peduncle. Araucanas are rumpless, which means that they do not have a tail, any remnant of a tail, or even an oil gland. There is wide variability in the size and shape of tufts. But a bird with large showy tufts makes an unforgettable impression!

From:
https://www.backyardchickens.com/web/viewblog.php?id=11417-breed-araucana


Upon a search, I found this quoted on many websites and I believe it originated from the APA/ABA and The Araucana Club of America.


Also, something of interest and low hatchability and deficient Vitamin D3:
http://www.springerlink.com/content/f730505582377843/​