quantitatively, restricted diets during rearing could improve their welfare while also
achieving desired growth rates. There were six treatments, each with four replicate pens of
12 birds. From 1 to 20 weeks of age, birds in a control treatment (T1) received a
quantitatively restricted amount of a standard mash diet while birds in five additional
treatments (T2–T6) had ad libitum access to experimental diets. The latter were based on …