FIGURE 1.

Experimental design for experiments 1 and 2. Experiment 1 used one strain of broiler breeder (Ross 708) fed control or flaxseed-supplemented diets in the rearing (0–18 WoA) and/or laying period (19–36 WoA), resulting in four rearing–laying diet combinations. Experiment 2 used two strains of layer breeders, one that produces brown-feathered offspring (ISA Brown) and one that produces white-feathered offspring (Shaver White), that were fed either control or flaxseed-supplemented diets during both the rearing and laying periods. Eggs were collected from the breeders at two different ages and incubated for 21 days. Upon hatching, unsexed chicks were euthanized for brain dissections.