Found this on Google Books:
http://books.google.com/books?id=gK...rontcover&dq=poultry&lr=#v=onepage&q=&f=false
I think it may describe Davaroo's three finger method of determining point of lay.
http://books.google.com/books?id=gK...rontcover&dq=poultry&lr=#v=onepage&q=&f=false
I think it may describe Davaroo's three finger method of determining point of lay.