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Coccidiostat residues in poultry excreta
Author(s) -
HobsonFrohock Anthony,
Johnson Hilary A.
Publication year - 1983
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740340107
Subject(s) - coccidiostats , chemistry , sulfanilamide , excretion , zoology , food science , biology , veterinary medicine , biochemistry , coccidiosis , medicine
The excretion of the coccidiostats sulphaquinoxaline and decoquinate has been studied in caged broilers on diets containing 100 and 30 mg kg −1 of the drugs respectively. Sulphaquinoxaline reached a maximum excretion of 54 mg kg −1 (based on dried excreta) in 18 days and decoquinate a level of 37 mg kg −1 after 14 days. When the drugs were withdrawn from the feed the excreta concentration decreased to less than 2 mg kg −1 in 3 days. Storage of contaminated excreta at 23°C for 9 days showed contrasting effects; the sulphaquinoxaline content decreased from 56 to 35 mg kg −1 whereas the decoquinate concentration increased from 37 to 41 mg kg −1 . Both coccidiostats appeared relatively stable when samples of excreta were dried in layers 1 cm thick in an oven at 200°C.