Table 5.
Standardized ileal digestibility of CP and AA in distillers dried grains with solubles (DDGS) fed to pigs 1
| |
Ingredients |
|
|
Additional oil
2
|
|||||
|---|---|---|---|---|---|---|---|---|---|
| Item | Conventional DDGS | Low-fat DDGS, 7.5% fat | Low-fat DDGS, 6.9% fat | Low-fat DDGS, 7.5% fat with oil | Low-fat DDGS, 6.9% fat with oil | SEM | P -value | SEM | P -value |
| CP, % |
79.8a |
72.8b |
73.6b |
74.6b |
75.3b |
1.22 |
< 0.01 |
1.29 |
<0.01 |
| Indispensable AA, % |
|
|
|
|
|
|
|
|
|
| Arg |
87.7a |
81.0c |
82.5bc |
83.2b |
81.4bc |
0.93 |
< 0.01 |
0.92 |
<0.01 |
| His |
80.9a |
73.5b |
74.6b |
75.6b |
73.3b |
1.12 |
< 0.01 |
1.08 |
<0.01 |
| Ile |
79.8a |
72.9bc |
73.1bc |
75.2b |
71.9c |
0.95 |
< 0.01 |
1.00 |
<0.01 |
| Leu |
87.7a |
83.4bc |
82.2c |
84.8b |
83.3bc |
0.76 |
< 0.01 |
0.69 |
<0.01 |
| Lys |
67.9a |
56.4c |
61.7b |
62.6b |
57.3c |
1.91 |
< 0.01 |
1.51 |
<0.01 |
| Met |
88.1a |
84.8bc |
83.6c |
85.8b |
85.0bc |
0.68 |
< 0.01 |
0.63 |
<0.01 |
| Phe |
84.9a |
80.3bc |
79.8c |
81.6b |
80.0bc |
0.75 |
< 0.01 |
0.71 |
<0.01 |
| Thr |
73.4a |
66.9c |
68.2bc |
70.4b |
68.2bc |
1.30 |
< 0.01 |
1.18 |
<0.01 |
| Trp |
83.1a |
77.8c |
81.1ab |
81.0abc |
78.0bc |
1.23 |
< 0.05 |
1.36 |
0.02 |
| Val |
80.5a |
74.2bc |
74.6bc |
75.9b |
73.0c |
0.95 |
< 0.01 |
0.99 |
<0.01 |
| Mean |
82.5a |
76.7c |
77.0bc |
78.8b |
76.6c |
0.85 |
< 0.01 |
0.85 |
<0.01 |
| Dispensable AA, % |
|
|
|
|
|
|
|
|
|
| Ala |
85.4a |
80.6bc |
79.9c |
82.1b |
80.6bc |
0.89 |
< 0.01 |
0.84 |
<0.01 |
| Asp |
73.6a |
67.8c |
68.7bc |
70.6b |
67.1c |
1.13 |
< 0.01 |
1.16 |
<0.01 |
| Cys |
76.0a |
67.3c |
68.8bc |
70.9b |
67.3c |
1.60 |
< 0.01 |
1.41 |
<0.01 |
| Glu |
85.4a |
80.1b |
79.5b |
81.4b |
80.2b |
0.96 |
< 0.01 |
0.85 |
<0.01 |
| Gly |
75.9a |
64.8b |
66.8b |
68.0b |
64.3b |
2.13 |
< 0.01 |
2.24 |
<0.01 |
| Pro |
98.5a |
87.4b |
89.5b |
89.7b |
88.4b |
4.70 |
< 0.05 |
3.16 |
<0.01 |
| Ser |
78.8a |
74.4c |
74.7bc |
77.4a |
76.7ab |
1.22 |
< 0.01 |
1.02 |
0.10 |
| Tyr |
85.7a |
80.9c |
80.7c |
83.0b |
81.7bc |
0.72 |
< 0.01 |
0.71 |
<0.01 |
| Mean |
84.3a |
77.7b |
78.0b |
79.8b |
78.0b |
1.39 |
< 0.01 |
1.30 |
<0.01 |
| Total AA | 83.5a | 77.2b | 77.5b | 79.4b | 77.4b | 1.10 | < 0.01 | 1.08 | <0.01 |
a,bMeans without a common superscript in the same row differ; pairwise comparison.
1Data are means of 8 observations. Values for standardized ileal digestibility were calculated by correcting apparent ileal digestibility values for basal endogenous losses (g/kg of DMI), which were determined by feeding pigs a N-free diet; CP, 13.84; Arg, 0.47; His, 0.14; Ile, 0.26; Leu, 0.42; Lys, 0.32; Met, 0.08; Phe, 0.27; Thr, 0.48; Trp, 0.09; Val, 0.39; Ala, 0.55; Asp, 0.65; Cys, 0.14; Glu, 0.78; Gly, 1.20; Pro, 4.60; Ser, 0.37; Tyr, 0.20.
2Orthogonal contrast comparing conventional DDGS and the 2 sources of low-fat DDGS with additional oil.