Document Detail

Efficacy of feeding glucosinolate-extracted crambe meal to broiler chicks.
MedLine Citation:
PMID:  7816729     Owner:  NLM     Status:  MEDLINE    
Glucosinolates and their breakdown products (nitriles) have long been implicated as toxic factors when feeding rapeseed (Brassica napus) meals and crambe (Crambe abyssinica) meals to poultry. Accordingly, various methods have been developed to remove these compounds from the meals to enhance their value as feed supplements. Glucosinolates and nitriles were extracted from commercially processed, defatted crambe meal by washing with water or various solvent-water mixtures: 50% isopropanol, 50% acetone, or 50% ethanol. In addition, crambe seed was extruded and extracted in the laboratory with isopropanol or hexane. Water washing of commercially defatted meal proved to be the most effective method of extraction, removing 95% of the glucosinolates and nitriles. Meals were fed to 7-d-old broiler chicks at 10% of the diet for 14 d. Weight gain decreased (P < .05) in most groups; however a greater decrease (P < .01) was observed in birds fed meals with high glucosinolate content. Feed intake also decreased (P < .05) in most groups; consequently, feed efficiencies were similar for all groups. No changes in serum chemistries, triiodothyronine, thyroxine, or tissue lesions were associated with glucosinolate or nitrile intake. A relationship (P < .05, r = .74) was found between weight gain and glucosinolate intake. No correlation was found between feed intake and meal glucosinolate or nitrile concentrations.
P Kloss; E Jeffrey; M Wallig; M Tumbleson; C Parsons; L Johnson; M Reuber
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  73     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1994 Oct 
Date Detail:
Created Date:  1995-02-09     Completed Date:  1995-02-09     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1542-51     Citation Subset:  IM    
University of Illinois, Urbana 61801.
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MeSH Terms
Alkenes / administration & dosage*,  isolation & purification
Animal Feed / analysis*
Brassica / chemistry
Chickens / blood,  physiology*
Eating / drug effects
Glucosinolates / administration & dosage*,  isolation & purification
Nitriles / administration & dosage*,  isolation & purification
Plants, Edible / chemistry
Seeds* / chemistry
Weight Gain / drug effects
Reg. No./Substance:
0/Alkenes; 0/Glucosinolates; 0/Nitriles; 592-51-8/1-cyano-3-butene

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

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