Black Birds not based on Extended Black

[Krys109uk]

And why would someone do that?

To see the affect of female hormones??????​

 

[Henk69]

What can I say: science works that way. Animal experiments.

 

[Sonoran Silkies]

I guess I wouldn't expect a topical effect to carry into ungrown feathers.

 

[walkswithdog]

Quote:
Actually topically applied hormones are still absorbed into the skin and do affect an animal. The effect is usually temporary - like through one moult in the above case.

But applying testosterone topically to the comb of chicks as they grow have both temporary and LONG TERM effects on the chicks so treated, male and female.

Anything absorbed through the skin, and most hormones can be, and many drugs, have the exact same action they would injected/injested. It still gets into the blood stream, it still makes changes.

 

[Sonoran Silkies]

Interesting about the comb. I guess I can understand a temporary affect, but I wouldn't expect it to last long enough to grow a feather unless applied frequently during the growth.

 

[walkswithdog]

Think of it more as a single HUGE dose of female hormones. The HUGE will affect the formation of those feathers for the entire moult by getting into the skin, the blood, the forming feather all at once.

 

[Henk69]

Quote:
I think they were done on a daily base...

 

[Rootball]

I dont mean to be rude, but do they have to be plucked....couldnt you just have a female mamal pee on the bird daily?


interesting conversation.


You should be able to get all sorts of hen colored cocks with this method...shouldnt you?

 

[Henk69]

A daily p and waiting for natural moult you mean?

I think they were handwashed.
I guess the scientists wanted to get the job done as quickly as possible.

 

[walkswithdog]

Well they didn't wait and don't generally for experimental purposes - wait for a natural moult: since you can FORCE a moult by plucking the bird. Not nice but temporally prudent in the science world.

And if they did it either once or several times (daily) while the feathers formed they could affect all feathers formed for that moult - though the daily for a period would have significantly more affect.

If you didn't do it daily I wonder if you'd get a mixed feathered bird, or if once the folicle is affected - it stays affected through the whole period of feather growth.

Kind of like a switch. Is it on/off or on a dimmer scale?