Environmental conditions in poultry houses affect the microbial communities present in both broiler chicks and their litter — changes that may affect production parameters and disease.
New study shows brain size is smaller in commercially bred laying hens
When humans domesticate and breed an animal, they tend to select for a very specific trait. In laying hens, artificial selection for high egg production has led to hens that can produce 320 eggs a year. But could artificial selection have unintentionally altered hen brain morphology?