In extremely strong cases of infestations I bath my chicken with an Neem oil emulsion, which is use also to spray out the coop after wet cleaning. Otherwise Diatomicious Earth or alternatively Rock dust is enough to reduce the mites.
There are no golden Lakenfelder (this is the german writing style) in the european Standard.
Vorwerk are created as a dual breed and according to the european/german Standard the roosters are 750 gram heavier as the Lakenfelder, and the hens 500 gram. The (original large version) Vorwerk Chicken...
Has someone institutional access to this Ebook?
I have already the print version from 1991, but I like to use the advance of text search in Ebooks.
My University unfortunately doesn't offer institutionally access to this Ebook.
So I have the hope, that there is someone here, who could share this...
These two books give a good overview about the introduction of Chicken to the New World (Chapter 8)
https://books.google.de/books?id=ncWCVCaWMuAC&lpg=PA142&ots=VS_Pw-7-BL&dq=north%20america%20chicken%20archaeological&hl=de&pg=PA141#v=onepage&q=north%20america%20chicken%20archaeological&f=false...
For example White Leghorn
Quote:Silverudd (1974, p. 194)
http://onlinelibrary.wiley.com/doi/10.1111/j.1601-5223.1974.tb00931.x/pdf
The combination of gold and inhibitor of gold reduces/removes the problem of straw tinge in white birds - similar to silver.
In general You need only two or...
Another alternative source for the recessive White could be the Barred Plymouth Rocks, which were used to create the Gold Legbars. So - not easy to trace it back definitely, where the recessive White originates from.
There is an study which shows that there is a female bias in poultry aswell ... finally it makes more sense than the claim, that rooster dominate the inheritance of shell colour.
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2435.2012.02001.x/pdf
PS: This page gives more impression about his laying-hen-system.
He promotes to keep the laying hens longer than two periods (as used to that time).
His idea, was to create a good management system to keep laying performance high
and reach consequently 1000 eggs per hen after four or six...
Unfortunately the mentioned copy of the leaflet/booklet couldn't be find online.
https://www.google.com/search?q=1000+egg+hen+trafford&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:de:unofficial&client=seamonkey-a
So I hope, that maybe someone here in the Forum knows it and could provide me a scan.
You can expect at least an average of the egg colour of both lines. That's why these crosses have been made e.g. to create Welbars.
But if You cross back Welbars to Welsummer in F2, F3, ... Fn, You will get improved Welsummers.
The english Cuckoo Marans have the advantage, that their shanks are...
The darkest lines are in GB.
Many breeder crossed Marans and Welsummer to produce dark layer for the market and crossed some of the best hens back.
So You can suppose, why they have such a good egg colour like this (my english flock)
A darker Welsummer egg in comparrison with Ixworth eggs...
These are stubs - an atavistic trait, from their ancestor, which pop up from case to case.
The breed standards for Welsummers in different countries mention this as fault.
This is probably from an article by HANS SCHIPPERS the guru of the barnevelder breed and can be found in the Practical Poultry Journal in the September 2007 issue on pages 16 - 19.
http://forum.backyardpoultry.com/viewtopic.php?p=50183&sid=6159a008735cf8e40849b6d4b1bd7218#p50183
My initial thought was, that You could be the second breeder, from where I've got the second part of hatching eggs of SDL Barnevelder in 2012, which he organized for me and I could pick up at his place. But I realized, after my posting, that You are too far away from him.