Table 4.
Apparent ileal digestibility of crude protein (CP) and AA in distillers dried grains with solubles subjected to increasing levels of heat treatment by weanling pigs 1
| |
Distillers dried grains with solubles |
|
|
|
|||
|---|---|---|---|---|---|---|---|
| |
|
Autoclaved at 130°C |
SEM |
P
-value
2
|
|||
| Item | Non-autoclaved | 10 min | 20 min | 30 min | Linear | Quadratic | |
| CP, % |
64.4 |
59.0 |
52.2 |
55.7 |
2.0 |
< 0.01 |
0.12 |
| Indispensable AA, % |
|
|
|
|
|
|
|
| Arginine |
79.3 |
71.9 |
72.0 |
69.1 |
1.7 |
< 0.01 |
0.06 |
| Histidine |
73.9 |
66.8 |
65.9 |
66.0 |
1.3 |
< 0.01 |
0.23 |
| Isoleucine |
72.3 |
66.2 |
66.6 |
63.1 |
1.4 |
< 0.01 |
0.02 |
| Leucine |
84.0 |
80.7 |
80.4 |
79.1 |
0.8 |
< 0.01 |
0.12 |
| Lysine |
61.2 |
48.0 |
48.7 |
44.9 |
1.9 |
< 0.01 |
0.02 |
| Methionine |
83.6 |
77.7 |
77.8 |
75.7 |
0.9 |
< 0.01 |
< 0.01 |
| Phenylalanine |
79.8 |
75.1 |
75.4 |
73.6 |
1.0 |
< 0.01 |
0.04 |
| Threonine |
60.2 |
53.9 |
53.2 |
51.2 |
1.6 |
< 0.01 |
0.27 |
| Tryptophan |
55.1 |
43.7 |
42.8 |
41.5 |
2.0 |
< 0.01 |
0.15 |
| Valine |
71.9 |
65.7 |
65.5 |
62.6 |
1.4 |
< 0.01 |
0.08 |
| Mean |
75.6 |
70.0 |
69.9 |
67.8 |
1.1 |
< 0.01 |
0.07 |
| Dispensable AA, % |
|
|
|
|
|
|
|
| Alanine |
77.5 |
73.3 |
71.4 |
71.0 |
1.3 |
< 0.01 |
0.86 |
| Aspartic acid |
65.5 |
55.2 |
55.4 |
53.3 |
1.5 |
< 0.01 |
0.02 |
| Cysteine |
71.9 |
64.7 |
60.5 |
62.7 |
1.5 |
< 0.01 |
0.54 |
| Glutamic acid |
81.7 |
76.7 |
75.6 |
75.3 |
0.9 |
< 0.01 |
0.34 |
| Glycine |
43.4 |
36.3 |
29.0 |
31.7 |
4.6 |
< 0.01 |
0.47 |
| Proline |
69.6 |
65.1 |
64.1 |
63.2 |
1.3 |
< 0.01 |
0.47 |
| Mean | 68.3 | 61.8 | 59.2 | 59.5 | 1.5 | < 0.01 | 0.85 |
1Data are means of 8 observations, except for the distillers dried grains with solubles diet that was autoclaved for 10 min (n = 7).
2Linear and quadratic effects of time of autoclaving.