| Amino acid digestibility of corn distillers dried grains with solubles, liquid condensed solubles, pulse dried thin stillage, and syrup balls fed to growing pigs. | |
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MedLine Citation:
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PMID: 22064734 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Distillers dried grains with solubles (DDGS) has low and variable AA digestibility. The variability is often attributed to damage during the heating process and it has been suggested that the damage happens to the soluble components of DDGS such as reducing sugars. Combining solubles and grains sometimes produces "syrup balls" (SB) and their digestibility is unknown. The objectives of this experiment were to identify potential sources of poor and variable AA digestibility in DDGS. Specifically, our objective was to determine whether the problems are associated with the solubles component or with SB. The ingredients evaluated were DDGS, intact SB (ISB), ground SB (GSB), liquid condensed solubles (LCS), and pulse dried thin stillage (PDTS) obtained from the same ethanol plant. The LCS is produced by evaporation of thin stillage. Each ingredient was used as the only source of AA in an experimental diet. In a duplicate 6 x 6 Latin square design with 7-d adaptation and collection periods, the 6 treatments consisted of a N-free diet and the 5 test ingredients. Pigs had 5 d of adaptation to each diet, and on d 6 and 7, ileal digesta were collected from an ileal cannula for 8 h each day. Both SB treatments had apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of AA that were similar or higher (P < 0.05) than those of DDGS. The AID and SID values of Lys and a few other AA were similar in LCS (SID Lys: 63.1%) and DDGS (SID Lys: 61.5%), but the digestibility values of most AA in LCS were lower than in DDGS (P < 0.05). The low digestibility of AA in LCS was most pronounced for Met (SID: LCS, 41.9% vs. DDGS, 82.8%). The LCS had lower (P < 0.05) AID and SID of CP (SID: 67.8%) than ISB (SID: 85.2%) and GSB (SID: 85.9%), as well as all AA. The PDTS generally had the lowest AID and SID, and had lower (P < 0.05) CP (SID: 55.3%) and several AA, including Lys, than LCS. In conclusion, the presence of SB does not decrease AA digestibility of DDGS, and the LCS evaluated has indispensible AA digestibility lower than DDGS. The LCS has low digestibility of AA that seems not to be caused by heat damage. |
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Authors:
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J A Soares; H H Stein; V Singh; G S Shurson; J E Pettigrew |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-7 |
Journal Detail:
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Title: Journal of animal science Volume: - ISSN: 1525-3163 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Animal Sciences, University of Illinois, Urbana 61801. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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