Estimated genetic backgrounds of animals used and housing in five pens.

<p>(A) Cattle consisted of six Angus-Brahman multibred groups. Group 1 = 100% to 80% Angus, 0% to 20% Brahman; Group 2 = 79% to 60% Angus, 21% to 40% Brahman; Group 3 = 62.5% Angus, 37.5% Brahman, Group 4 = 59% to 40% Angus, 41% to 60% Brahman, Group 5 = 39% to 20% Angus, 61% to 80% Brahman, Group 6∶19% to 0% Angus, 81% to 100% Brahman. Bars indicate the expected portion of Angus and Brahman genetic traits in each breed group. (B) Animals were systemically housed in five pens according to their genetic background and sex. • is Calf breed group 1, ◊ is Calf breed group 2, ♣ is Calf breed group 3, Δ is Calf breed group 4, ▪ is Calf breed group 5, and ○ is Calf breed group 6. Bulls in pen 13 and 14 are boxed.