Table 7.
Effects of dietary energy and protein levels on carcass characteristics1
Criteria | Treatments | SEM2 | P-value | |||||||
---|---|---|---|---|---|---|---|---|---|---|
ME 3,265 | ME 3,365 | CON | P4 | P5 | LP5 | E | P | E×P | ||
Proximate analysis, % | ||||||||||
Moisture | 72.88 | 72.35 | 72.55 | 72.97 | 72.25 | 72.71 | 0.293 | 0.41 | 0.87 | 0.39 |
Crude protein | 23.43 | 24.06 | 23.01 | 24.12 | 24.17 | 23.70 | 0.271 | 0.26 | 0.43 | 0.43 |
Crude fat | 2.12 | 2.61 | 2.45 | 1.91 | 2.52 | 2.60 | 0.197 | 0.24 | 0.62 | 0.42 |
Crude ash | 1.09 | 1.14 | 1.14 | 1.00 | 1.16 | 1.17 | 0.043 | 0.55 | 0.55 | 0.68 |
Physiochemical property | ||||||||||
Cooking loss3 | 30.63 | 30.49 | 29.81b | 30.96ab | 29.73b | 31.75a | 0.093 | 0.80 | 0.07 | 0.15 |
Shear force4 | 4.51 | 4.53 | 4.49 | 4.87 | 4.30 | 4.42 | 0.331 | 0.93 | 0.15 | 0.18 |
WHC5 | 55.49 | 56.01 | 56.43A | 54.65B | 56.87A | 55.06B | 0.310 | 0.17 | 0.01 | 0.01 |
Backfat thickness | ||||||||||
P2, mm | 11.50b | 11.96a | 11.86ab | 12.14a | 11.64ab | 11.29b | 0.126 | 0.06 | 0.09 | 0.33 |
1Least squares means for three pigs per treatment
2Standard error of mean
3Cooking loss unit: %
4Shear force unit: kg/0.5 in
5WHC: water holding capacity
ABmeans with different superscripts in the same row significantly differ (P < 0.05)
abmeans with different superscripts in the same row significantly differ (0.05 ≤ P < 0.10)