Table 2.
Body fat content of the growing-finishing pigs.1
| Index | NORMAL1 | LOW2 | S2G13 | S1G24 | S1G15 |
|---|---|---|---|---|---|
| Body fat ratio, % | 2.18 ± 0.15b | 2.48 ± 0.29ab | 2.16 ± 0.26b | 2.97 ± 0.25a | 2.10 ± 0.14b |
| Backfat thickness, mm | 20.96 ± 0.97 | 22.51 ± 0.77 | 22.84 ± 1.04 | 23.53 ± 1.40 | 20.80 ± 0.89 |
| Intramuscular fat, % | 1.83 ± 0.23bc | 2.64 ± 0.27ab | 3.22 ± 0.25a | 2.92 ± 0.38a | 2.50 ± 0.34ab |
a,b,cMean values within a row with unlike superscript letters were significantly different (P < 0.05). n = 8.
NORMAL, pigs fed a normal crude protein (16%) diet.
LOW, pigs fed a low crude protein (12%) diet generated by decreasing the content of soybean meal.
S2G1, pigs fed a low crude protein (12%) diet with serine-to-glycine ratio 2:1, generated by decreasing the content of soybean meal and adding 0.49% serine and 0.08% glycine.
S1G2, pigs fed a low crude protein (12%) diet with serine-to-glycine ratio 1:2, generated by decreasing the content of soybean meal and adding 0.57% glycine.
S1G1, pigs fed a low crude protein (12%) diet with serine-to-glycine ratio 1:1, generated by decreasing the content of soybean meal and adding 0.24% serine and 0.33% glycine.