Interested in breeding and genetics? I found an online book for agri students (all animals)
And I found one chapter about
1. Selecting heavierst chickens over 25 generations.
2. Selecting the smallest
The study is in Dutch, use Translate if you are interested. The graphics are easy to interpret even if you can’t read Dutch.
https://wiki.groenkennisnet.nl/space/LFH/2490502#
Textbook Animal Breeding and Genetics
https://wiki.groenkennisnet.nl/space/TABAnd I found one chapter about
Selection limits with chickens
A research and theory on chicken sizes. How quick the chickens develop in two directions.1. Selecting heavierst chickens over 25 generations.
2. Selecting the smallest
The study is in Dutch, use Translate if you are interested. The graphics are easy to interpret even if you can’t read Dutch.
https://wiki.groenkennisnet.nl/space/LFH/2490502#