Table 3. Effects of the extra-high (XH) slaughter weight (SW) and low-lysine (Lys) diet on physicochemical characteristics of Longissimus lumborum muscle of finishing gilts1)

Item Average SW XHSW SEM Contrast: p-value
B-Med2) G-Med G-Med G-Low T 1: T 2: T 3:
T1 T2 T3 T4 T 2 T 3 T 4
CIE L* 50.9 50.4 51.7 50.4 0.4 0.43 0.04 0.05
CIE a* 7.49 7.45 8.12 7.61 0.33 0.93 0.17 0.29
CIE b* 1.76 1.88 2.94 1.02 0.18 0.65 < 0.01 < 0.01
pH 5.83 5.82 5.65 5.74 0.03 0.81 < 0.01 0.09
Drip loss (%) 1.29 1.20 1.47 1.28 0.12 0.61 0.12 0.27
RW3) (%) 11.1 9.8 11.4 8.8 0.8 0.29 0.20 0.04
Cooking loss (%) 28.9 23.1 26.9 25.0 0.6 0.38 < 0.01 0.04
WBSF 2.90 2.86 3.08 3.11 0.06 0.63 < 0.01 0.78
IMF (%) 3.02 2.54 2.98 2.76 0.20 0.11 0.14 0.43
Data are means of eight animals.
Barrows fed the medium-lysine (0.80%) diet, gilts fed the medium-lysine diet, and gilts fed the low-lysine (0.60%) diet, respectively.
Percentage of water released from a muscle sample (w/w) squeezed between two thin plastic films pressed by a certain weight load as a quick assessment of the water holding capacity.
T, treatment; B-Med, barrow-medium; G-Med, gilt-medium; RW, released water; WBSF, Warner-Bratzler shear force; IMF, intramuscular fat.