they get rid of breeders earlier than we would...I don’t imagine there is much known about meat bird molting. ¯\_(ツ)_/¯
But I would assume that grandparent stock and parent stock of the broiler breeds is kept through a full molt into a second laying cycle... so they have probably been selected for fast molt long ago. Whether or not that would continue or not I have zero idea.![]()
Great Grandparent hens start producing eggs from about 22 – 24 weeks of age and produce around 100 fertile eggs in their 52-week lifetime. The fertile eggs they lay are hatched out in hatcheries to produce the next generation – the Grandparents of commercial meat chicken
Grandparent flocks start producing eggs at about 22-24 weeks of age and in their lifetime (to about 60 weeks of age) produce between 100 – 120 fertile eggs. These fertile eggs from Grandparent flocks are collected and hatched out to produce the next generation of birds, called the Parent breeders.
Parent birds are kept until approximately 64 weeks, and produce about 160 fertile eggs. It is this generation of breeders that produces the fertile eggs that are hatched to produce the meat chicken flocks whose meat is processed for human consumption (the commercial meat chicken). That’s why they are referred to as the “Parent” breeders.
https://www.chicken.org.au/chicken-meat-production/