Abstract
THE broad spectrum antibiotics, chlortetracycline (CTC) and oxytetracycline (OTC) are sometimes fed or injected at high levels to control poultry diseases (Adler et al., 1956; Shelton and Olson, 1958; and Peterson and Hendrix, 1959). Chlortetracycline has also been reported to be effective, when fed at high levels for a few days before slaughter for extending the keeping time of poultry meat (Anderson et al., 1958; and Silverstini et al., 1958, 1959).Absorption of CTC and OTC into the blood may be doubled by feeding terephthalic acid (TPA) (Peterson, 1958; Peterson et al., 1959; Peterson and Hendrix, 1959; Price et al., 1959a, b; and Yates and Stephenson, 1959). Or, the same effect may be produced by lowering the calcium in the ration for a few days during use of the antibiotic (Price et al. 1959a, b; Pensack et al., 1959; and Stokstad et al., 1959).OBJECTIVESThe objectives of this study …
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