Table 3.
Physical characteristics of the different muscles of dry-cured hams obtained from pigs of different breeds and sex1 fed on conventional (CONV) or low protein (LP) diets.
Diet (D) | Breed (BR) | Tissue (T)2 | BR × D | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CONV | LP | SEM | P | Anas | Danbred | SEM | P | BF | QF | SM | ST | SEM | P | P | |
pH | 5.49 | 5.52 | 0.01 | 0.07 | 5.51 | 5.50 | 0.01 | 0.39 | 5.51bc | 5.53c | 5.50b | 5.48a | 0.01 | <0.001 | 0.49 |
Water activity3 | 0.90 | 0.90 | 0.002 | 0.76 | 0.90 | 0.89 | 0.002 | 0.36 | — | — | — | — | — | — | 0.84 |
Colour: | |||||||||||||||
Lightness (L*) | 37.5 | 37.3 | 0.29 | 0.64 | 37.7 | 37.2 | 0.29 | 0.30 | 38.1c | 35.6b | 33.5a | 42.7d | 0.34 | <0.001 | 0.37 |
Green-red (a*) | 7.00 | 6.92 | 0.18 | 0.78 | 7.05 | 6.87 | 0.18 | 0.46 | 6.86b | 8.28d | 7.53c | 5.18a | 0.19 | <0.001 | 0.77 |
Blue-yellow (b*) | 8.24 | 8.30 | 0.12 | 0.75 | 8.26 | 8.28 | 0.12 | 0.92 | 7.47a | 8.61b | 7.02a | 9.97c | 0.14 | <0.001 | 0.80 |
Texture: | |||||||||||||||
Shear force, N | 32.8 | 33.6 | 1.10 | 0.59 | 33.0 | 33.4 | 1.10 | 0.81 | 21.4a | 36.2b | 42.5c | 32.7b | 1.56 | <0.001 | 0.22 |
Hardness (30%), N | 20.7 | 19.3 | 1.09 | 0.36 | 19.1 | 21.0 | 1.09 | 0.22 | 26.3b | 24.0b | 13.6a | 16.2a | 1.07 | <0.001 | 0.30 |
Adhesiveness, N × s | −1.73 | −1.73 | 0.08 | 1.00 | −1.81 | −1.66 | 0.08 | 0.20 | −2.00c | −1.48a | −1.84bc | −1.62ab | 0.09 | <0.001 | 0.88 |
Cohesiveness | 0.54 | 0.55 | 0.01 | 0.25 | 0.55 | 0.54 | 0.01 | 0.56 | 0.53a | 0.60b | 0.53a | 0.52a | 0.01 | <0.001 | 0.51 |
Springiness | 0.73 | 0.73 | 0.01 | 0.81 | 0.73 | 0.73 | 0.01 | 0.81 | 0.74 | 0.72 | 0.72 | 0.72 | 0.01 | 0.34 | 0.10 |
Chewiness, N | 8.42 | 7.92 | 0.52 | 0.50 | 7.76 | 8.58 | 0.52 | 0.27 | 10.6b | 10.6b | 5.33a | 6.18a | 0.54 | <0.001 | 0.65 |
1The fixed effect of sex was not significant.
2BF: Biceps femoris; QF: Quadriceps femoris; SM: Semimembranosus muscle; ST: Semitendinosus muscle.
3Measured on square samples (15 × 15 mm) taken from close to the Biceps femoris muscle.