Efficacy of feeding glucosinolate-extracted crambe meal to broiler chicks

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 v...

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Bibliographic Details
Published in:Poultry science 1994-10, Vol.73 (10), p.1542-1551
Main Authors: Kloss, P, Jeffrey, E, Wallig, M, Tumbleson, M, Parsons, C, Johnson, L, Reuber, M
Format: Article
Language:English
Subjects:
Alkenes - administration & dosage
Alkenes - isolation & purification
Animal Feed - analysis
Animals
antimetabolite
antimetabolites
antimetabolitos
blood serum
Brassica - chemistry
broiler chickens
Chickens - blood
Chickens - physiology
chicks
crambe
diet
dieta
Eating - drug effects
extrusion
gain de poids
ganancia de peso
glucosinolate
glucosinolates
Glucosinolates - administration & dosage
Glucosinolates - isolation & purification
glucosinolatos
histopathologie
histopathology
histopatologia
hormonas de la tiroide
hormone thyroidienne
Nitriles - administration & dosage
Nitriles - isolation & purification
Plants, Edible - chemistry
pollito
pollo de engorde
poulet de chair
poussin
regime alimentaire
Seeds - chemistry
serum sanguin
suero sanguineo
thyroid hormones
weight gain
Weight Gain - drug effects
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Summary: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
ISSN:0032-5791
1525-3171
DOI:10.3382/ps.0731542