TY - JOUR
T1 - Factors affecting the variability in ileal amino acid digestibility in corn distillers dried grains with solubles fed to growing pigs
AU - Pahm, A. A.
AU - Pedersen, C.
AU - Hoehler, D.
AU - Stein, H. H.
PY - 2008/9
Y1 - 2008/9
N2 - Two experiments were conducted to compare the ileal digestibility of AA in distillers dried grains with solubles (DDGS) sourced from different regions (IL, MN, KY), to compare AA digestibility in DDGS and in distillers dried grains (DDG) and to compare AA digestibility in DDGS from ethanol production (DDGS ethanol) and DDGS from beverage production (DDGSbeverage). In Exp. 1, five Samples Of DDGSethanol were sourced from Minnesota (MN1, MN2), Illinois (IL1, IL2), and from Kentucky (KY). In Exp. 2, six samples of DDGSethanol, 1 sample of DDG, and 1 sample of DDGS beverage were used to compare values for apparent ileal digestibility and standardized ileal digestibility (SID) of AA between DDGSethanol and DDGSbeverage and between DDG and DDGSethanol. Results of Exp. 1 showed that the SID of Lys in DDGS from MN2 (72.8%) was greater (P < 0.01) than in DDGS from MN1 (66.8%), IL1 (66.8%), and KY (65.8%) but not different from IL2 (70.1%). Except for Leu and Glu, no differences in SID for any of the other AA were observed among the 5 sources of DDGS. In Exp. 2, the SID for Lys in DDGSbeverage was greater (P < 0.01) than in DDGSethanol (69.3 vs. 64.8%), but for CP and all other AA except His, no differences between the 2 types of DDGS were observed. The SID for most AA in DDG were greater (P < 0.05) than in DDGSethanol, which suggests that the AA in the solubles that are added to DDGS may be less digestible than the AA in DDG. In conclusion, results of these experiments confirm that the digestibility of Lys is more variable among sources of DDGS than the digestibility of other AA. However, the SID of AA among DDGS sources within a region can vary as much as among DDGS sources from different regions, and AA in DDGSbeverage may be as digestible as AA in DDGSethanol. The digestibility of AA in DDG is greater than in DDGS, which indicates that AA in the solubles have a lower digestibility than AA in DDG.
AB - Two experiments were conducted to compare the ileal digestibility of AA in distillers dried grains with solubles (DDGS) sourced from different regions (IL, MN, KY), to compare AA digestibility in DDGS and in distillers dried grains (DDG) and to compare AA digestibility in DDGS from ethanol production (DDGS ethanol) and DDGS from beverage production (DDGSbeverage). In Exp. 1, five Samples Of DDGSethanol were sourced from Minnesota (MN1, MN2), Illinois (IL1, IL2), and from Kentucky (KY). In Exp. 2, six samples of DDGSethanol, 1 sample of DDG, and 1 sample of DDGS beverage were used to compare values for apparent ileal digestibility and standardized ileal digestibility (SID) of AA between DDGSethanol and DDGSbeverage and between DDG and DDGSethanol. Results of Exp. 1 showed that the SID of Lys in DDGS from MN2 (72.8%) was greater (P < 0.01) than in DDGS from MN1 (66.8%), IL1 (66.8%), and KY (65.8%) but not different from IL2 (70.1%). Except for Leu and Glu, no differences in SID for any of the other AA were observed among the 5 sources of DDGS. In Exp. 2, the SID for Lys in DDGSbeverage was greater (P < 0.01) than in DDGSethanol (69.3 vs. 64.8%), but for CP and all other AA except His, no differences between the 2 types of DDGS were observed. The SID for most AA in DDG were greater (P < 0.05) than in DDGSethanol, which suggests that the AA in the solubles that are added to DDGS may be less digestible than the AA in DDG. In conclusion, results of these experiments confirm that the digestibility of Lys is more variable among sources of DDGS than the digestibility of other AA. However, the SID of AA among DDGS sources within a region can vary as much as among DDGS sources from different regions, and AA in DDGSbeverage may be as digestible as AA in DDGSethanol. The digestibility of AA in DDG is greater than in DDGS, which indicates that AA in the solubles have a lower digestibility than AA in DDG.
KW - Amino acid
KW - Digestibility
KW - Distillers dried grains
KW - Distillers dried grains with solubles
KW - Distillers solubles
KW - Pig
UR - http://www.scopus.com/inward/record.url?scp=52649118054&partnerID=8YFLogxK
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U2 - 10.2527/jas.2008-0868
DO - 10.2527/jas.2008-0868
M3 - Article
C2 - 18469044
AN - SCOPUS:52649118054
SN - 0021-8812
VL - 86
SP - 2180
EP - 2189
JO - Journal of animal science
JF - Journal of animal science
IS - 9
ER -