Figure 6.

Effect of dietary AA levels¹ on shank length of Cobb 500 SF breeder females at 10, 11, 15, 17, 20, and 21 wk of age. Shank length was measured from the hock to the footpad of live birds. *Significant difference between dietary AA levels (P < 0.05). n = 4 replicate pens per treatment of 3 pullets each. ^a-b Dietary treatments not sharing a lowercase letter in columns differ significantly by Tukey's test at P < 0.05 level. ¹ Low-AA, moderate-AA, standard-AA, and high-AA diets corresponding to 80, 90, 100, and 110% of the Cobb-Vantress (2018) recommendations, guided by dig Lys using balanced protein.