Cornish Cross These birds can reach 12 pounds in just six to eight weeks. Each bird provides a large amount of breast, leg, and thigh meat. However, Cornish Cross chickens require a lot of feed and other resources to accommodate this rapid growth. Oct 5, 2020

#1 Feed high protein food While chickens need a lot of carbs to meet their energy needs and make them put on weight, a high protein diet can help your indigenous chickens grow faster. Animal by-products are generally some of the best quality protein sources for your chickens. May 21, 2019

Selective breeding to create larger birds has contributed to the rapid growth of chickens. Despite the health and welfare issues associated with accelerated growth, the industry considers each animal in terms of ‘feed conversion efficiency’.