Document Detail

Select corn coproducts from the ethanol industry and their potential as ingredients in pet foods.
MedLine Citation:
PMID:  18791159     Owner:  NLM     Status:  MEDLINE    
The objectives of this study were to determine the chemical composition and nutritive value of corn protein product 1 (CPP 1), corn protein product 2 (CPP 2), and corn fiber (CF), novel coproducts of the ethanol industry, and compare these feed ingredients with standard plant protein ingredients [soybean meal (SBM), distillers dried grains with solubles (DDGS), corn gluten meal (CGlM), and corn germ meal (CGeM)], and to compare CF sources (CF control 1 and control 2) with standard fiber sources (peanut hulls, Solka-Floc, and beet pulp) commonly used in pet foods. Corn fiber, CPP 1, and CPP 2 were produced at a pilot-scale modified dry-grind plant, with CPP 2 having a greater degree of purification than CPP 1. Crude protein values for CPP 2 and CPP 1 were 57.3 and 49.7%, respectively. Total dietary fiber concentration was 29% for CPP 2 and 23.5% for CPP 1. Acid-hydrolyzed fat and GE concentrations were similar for these ingredients. In a protein efficiency ratio assay, no differences (P > 0.05) in feed intake, BW gain, or CP intake were noted for CPP 2, CPP 1, or CGlM. However, feeding CPP 2 resulted in a greater (P < 0.05) G:F ratio and protein efficiency ratio than CPP 1 and CGlM. In a cecectomized rooster assay, CGlM had numerically the greatest standardized total AA, total essential AA, and total nonessential AA digestibilities, but they were not different (P > 0.05) from CPP 1 or SBM values. Corn germ meal resulted in the least values, but they were not different from those for DDGS and CPP 1. The greatest values for true nitrogen-corrected ME were obtained with CGlM, followed by CPP 2, DDGS, CPP 1, SBM, and CGeM. Distillers dried grains with solubles and CPP 1 had similar true nitrogen-corrected ME values, and they were not different from values for CPP 2 and SBM. In vitro CP disappearance was greatest (P < 0.05) for CGlM (94.1%), intermediate for DDGS (76.8%) and CPP 1 (77.5%), and least for CPP 2 (74.1%) and CGeM (67.7%). Corn fibers contained predominantly insoluble dietary fiber (1% or less of soluble dietary fiber), with a moderate CP concentration. In vitro OM disappearance for the fiber sources, when using inoculum from dog feces, revealed that with the exception of beet pulp, which had a moderate disappearance value after 16 h of fermentation (17.7%), all fiber substrates had a nonsignificant extent of fermentation. In conclusion, novel corn coproducts had properties comparable with the standard protein and fiber sources used in animal nutrition.
M R C de Godoy; L L Bauer; C M Parsons; G C Fahey
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Publication Detail:
Type:  Journal Article     Date:  2008-09-12
Journal Detail:
Title:  Journal of animal science     Volume:  87     ISSN:  1525-3163     ISO Abbreviation:  J. Anim. Sci.     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-01-13     Completed Date:  2009-02-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003002     Medline TA:  J Anim Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  189-99     Citation Subset:  IM    
University of Illinois at Urbana-Champaign, Urbana 61801, USA.
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MeSH Terms
Amino Acids / analysis
Animal Feed / analysis*
Animal Nutritional Physiological Phenomena*
Chickens / metabolism
Dietary Fiber / analysis*
Dietary Proteins* / analysis,  standards
Eating / physiology
Minerals / analysis
Random Allocation
Weight Gain / physiology
Zea mays / chemistry*,  metabolism*
Reg. No./Substance:
0/Amino Acids; 0/Dietary Proteins; 0/Minerals

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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