Table 2.
Least squares means and SE for carcass and meat quality characteristics in Angus (n = 39), 75% Angus (n = 33), Brangus (n = 30), 50% Angus (n = 42), 25% Angus (n = 27), and Brahman (n = 59) cattle
Trait | Breed group | SE1 | I2 | b12 | b22 | |||||
---|---|---|---|---|---|---|---|---|---|---|
Angus | 75% A | Brangus | 50% A | 25% A | Brahman | |||||
Birth weight, kg | 33.40bc | 33.79bc | 35.99ab | 34.69ab | 37.52a | 31.51c | 0.97 | 32.96 | 3.174S | −0.852S |
Weaning weight, kg | 254.25a | 246.88a | 251.14a | 243.65a | 238.64a | 206.68b | 5.73 | 268.69 | 4.862 | −3.998S |
HCW, kg | 339.61a | 349.00a | 350.48a | 338.92a | 341.30a | 304.90b | 5.48 | 368.09 | 13.654S | −5.591S |
Dressing percentage, % | 58.88b | 60.59a | 60.90a | 60.27a | 61.23a | 60.20a | 0.38 | 61.242 | 1.443S | −0.291S |
Fat over the eye, cm | 1.64 | 1.42 | 1.45 | 1.4 | 1.44 | 1.4 | 0.11 | 1.676 | −0.042 | – |
Ribeye area, cm2 | 79.41a | 80.77a | 81.14a | 77.07ab | 77.98a | 73.23b | 1.66 | 89.766 | −1.769S | – |
Yield grade | 3.57 | 3.39 | 3.44 | 3.54 | 3.46 | 3.25 | 0.13 | 3.536 | −0.066 | – |
Quality grade | 613.80a | 604.24ab | 612.20a | 590.82b | 582.58b | 547.37c | 7.21 | 619.59 | 0.597 | −4.255S |
Marbling Score3 | 464.12a | 443.02ab | 456.48ab | 422.95bc | 399.01c | 352.85d | 13.31 | 486.02 | −28.79S | – |
WBSF, kg | 4.38 | 4.78 | 4.58 | 4.63 | 4.94 | 4.7 | 0.17 | 3.927 | 0.069 | – |
Juiciness4 | 5.15a | 5.12a | 5.13a | 5.04ab | 4.87ab | 4.80b | 0.11 | 5.049 | −0.095S | – |
Flavor4 | 5.62 | 5.59 | 5.6 | 5.53 | 5.45 | 5.41 | 0.07 | 5.427 | −0.057S | – |
Tenderness4 | 5.75a | 5.53ab | 5.51ab | 5.21bc | 5.07cd | 4.84d | 0.13 | 5.554 | −0.231S | – |
Connective tissue4 | 6.29a | 6.00ab | 6.02ab | 5.84bc | 5.49cd | 5.49d | 0.14 | 76.19 | −0.205S | – |
Off-flavor4 | 5.74 | 5.72 | 5.73 | 5.66 | 5.71 | 5.7 | 0.05 | 5.631 | −0.009 | – |
Within each row, means without common letters differ (P < 0.05).
1Average SE across the breed groups.
2Intercept (i), linear (b1), and quadratic (b2) effect of percent Brahman genetics.
3Marbling score: 100 to 199 = Devoid, 200 to 299 = traces, 300 to 399 = Slight, 400 to 499 = Small, 500 to 599 = Modest, 600 to 699 = Moderate, 700 to 799 = Slightly abundant.
4Sensory traits: tenderness, connective tissue, beef flavor intensity, and juiciness on scales form 1 to 8 (1 = extremely tough, abundant amount, extremely bland, extremely dry; 8 = extremely tender, none detected, extremely intense, extremely juicy). Off-flavor was evaluated on a scale from 1 to 6 (1 = extreme off-flavor to 6 = none detected).
SLinear or quadratic effect significant at P < 0.05.