Table 8.

Mean white striping (WS) scores of broilers at 49 d of age^1,2.

AA density3	Stocking density4	WS score
Norm	High	0.78 ± 0.55
Norm	Low	0.72 ± 0.57
10%Low	High	0.56 ± 0.62
10%Low	Low	0.61 ± 0.61
20%Low	High	0.44 ± 0.62
20%Low	Low	0.50 ± 0.62
P		0.414
AA density
Norm		0.75 ± 0.59
10%Low		0.58 ± 0.60
20%Low		0.47 ± 0.61
P		0.094
Linear		0.050
Quadratic		0.820
Stocking density
High		0.59 ± 0.60
Low		0.61 ± 0.60
P		0.860

¹Means (mean ± SD) represent 6 replicates with 3 randomly selected birds per replicate and 18 birds per treatment.

²Mean WS score data were analyzed by Kruskal Wallis/Mann Whitney U test.

³Norm = recommended amino acid (AA) density; 10%low = 10% lower than norm AA density; 20%low = 20% lower than norm AA density.

⁴High = 35 kg of body weight/m²; low = 26 kg of body weight/m² of stocking density.