Based on what I have read so far through this thread, almost caught up, I have more questions!
I am very interested in the correlation between weight and age at POL. My thoughts behind that are: 1) if the birds are taking longer to start laying they are still growing and putting on muscle mass, 2) muscle mass should mean larger/heavier birds, 3) those that are at POL earlier may be lighter and of the more eggy/layer type or commercial/hatchery, 4) and if these suppositions are indeed true they may give us hints to breeding a larger more correct body type bird.
What do you all think about that?
Hi Cowchick,
You're about 2/3 right. But the ghost in the machine is fat, not muscle. Read this booklet. It will explain a lot of your questions. William White Broomhead was widely known for his literary style in explaining the why's and how's of breeding poultry in an "everyman" style. Like he did in this Light Sussex missive. William White Broomhead was an internationally respected poultry-man in the first half of the last century. He wrote greater part of the Light Sussex Standard. He edited Volume 2, Part 4 of the 1901 edition of The Poultry Club standards.
Here is a sketch about him done by renowned poultry-man William E. Rice.
http://tinyurl.com/84d7x62
National poultry magazine: Volume 9, Issue 9 - Page 49 - 1911 -
Sketches of British Judges
No. 1—Mr. William White Broomhead
Written by WM. E. RICE
-----------------------------------------------------------------------------------------
Poultry Club in Britain decided that it would be good for the various breeds to
issue booklets about what the breeds should look like. A common sense exposition
of the official Standard. Unillustrated. Basically a conversation about what a breed
should look like for the novice. At this time, there was a great interest in purebred
birds by the masses. World War I was over and folk on both sides of the pond were
being encouraged by their governments to choose poultry as a money making
endeavor. Many people taking up the challenge were unversed in the technical
language of the poultry world. The Light Sussex was chosen for the very first booklet.
So here we have an eminent poultry-man ,author of most of the LS Standard,
discussing in common terms the points of the Light Sussex. Such wonderment.
One very interesting part of this is an explanation of
why the Sussex is close-feathered.
The Light Sussex. (London, 1921), by William White Broomhead
(page images at HathiTrust; US access only)
http://catalog.hathitrust.org/Record/009169678
and a second interesting read:
This book came from the library of Onley Kent, Sr. , another renowned poultry-man.
Mr. Kent wrote a book, cited below called:
"Breeding".
http://catalog.hathitrust.org/Record/009170142
A fascinating look at breeds and what makes them different from each other. In it, there is
a snippet on the shape of the feather. How the shape of the feather affects the bird. He
writes the longer narrower feathers show up on the slower maturing breeds. The shorter,
more rounded feathers show up generally on the faster maturing breeds. Take all the double mating info with a grain of salt. That was then.
Best Regards,
Karen Tewart
Waterford Sussex and Marans, western PA, USA