Document Detail

The effect of particle size of commercial soybean meal on performance and nutrient utilization of broiler chicks.
MedLine Citation:
PMID:  15049496     Owner:  NLM     Status:  MEDLINE    
An experiment was conducted to determine the effects of soybean meal (SBM) particle size on broiler performance, particularly P utilization. This experiment utilized a 2 x 2 x 2 factorial design with the following variables: SBM particle size, P level, and diet type, either corn-SBM or semipurified. SBM was obtained from a processing plant before (geometric mean diameter 1,239 microm) and after (891 microm) hammer milling. The P levels were 0.5% total P for deficient diets and 0.7% total P for adequate P diets. The coarse SBM improved bone ash (P < 0.05), gain:feed ratios (P < 0.1), and plasma P levels (P < 0.1). The diets with 0.5% P resulted in overall poorer performance as 16-d BW was reduced, gain:feed ratio decreased, bone ash decreased, and rickets incidence increased. Chicks fed the semipurified diets also had lower 16-d BW, lower gain-to-feed ratio, and lower bone ash. There was a significant interaction between the diet type and the soy particle size when the corn-SBM meal diets were fed because the coarse SBM increased plasma P levels, whereas there was little effect when the semipurified diets were fed. There were also significant interactions observed between these variables on growth and gain:feed ratio in that the coarse SBM elicited a much more dramatic response when incorporated into the semipurified diets as opposed to the corn-SBM diets. The results suggest that large particle size soybean meal may be more efficiently utilized than fine particle size soybean meal.
J Kilburn; H M Edwards
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Poultry science     Volume:  83     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-03-30     Completed Date:  2004-07-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  428-32     Citation Subset:  IM    
Department of Poultry Science, University of Georgia, Athens, Georgia 30602-2772, USA.
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MeSH Terms
Animal Nutritional Physiological Phenomena*
Bone and Bones / chemistry,  physiology
Chickens / physiology*
Food Handling
Particle Size*
Phosphorus / blood
Phosphorus, Dietary / administration & dosage,  analysis
Weight Gain
Zea mays
Reg. No./Substance:
0/Phosphorus, Dietary; 7723-14-0/Phosphorus

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