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.