Journal
RESEARCH IN VETERINARY SCIENCE
Volume 97, Issue 2, Pages 297-303Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.rvsc.2014.06.011
Keywords
Crotalaria pallida; Pyrrolizidine alkaloids; Usaramine; Eggs; Laying hens
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The effect of three dietary concentrations of Crotalaria pallida (C. pallida) seeds (0, 1, 2, and 3% w/w) of their normal diet were investigated in commercial laying hens during a 35 day feeding trial. All concentrations of C. pallida decreased body weight and feed intake (P < 0.05). Egg mass production and average egg weight were decreased by feeding of >= 2% pallida seeds (P < 0.05). All concentrations of C pallida increased relative lung weight and serum activity of ALT, AST and LDH (P < 0.05); 3% C. pallida seeds decreased liver weight (P < 0.05). Analysis of the C. pallida seeds for dehydropyrrolizidine alkaloid content detected usaramine and its N-oxide at a total alkaloid concentration of 0.18% (dry weight). Usaramine was also detected in the eggs of all hens fed C. pallida seeds. (C) 2014 Elsevier Ltd. All rights reserved.
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