Abstract
An experiment was conducted with 5- to 18-day-old Arbor Acres broiler chicks to evaluate the interaction of sodium zeolite A (NZA) and monensin in uninfected and in coccidiosis-infected chicks. Sodium zeolite A (0 and .75%) or monensin (0 and 121 ppm), or both, were fed to uninfected chicks or to chicks infected with 4 × 105 sporulated, Eimeria acervulina oocysts, resulting in a 2-by-2-by-2 factorial arrangement of treatments. Coccidial infection reduced (P<.01) weight gain, feed intake, feed efficiency, percentage of bone ash and of bone calcium; but the infection increased (P<.05) bone Zn percentage. Monensin alleviated (or at least partially so) the adverse effects of the coccidial infection on weight gain, feed intake, feed efficiency and percentage of bone ash (coccidiosis by monensin, P<.01). In addition, monensin increased the bone-calcium (P<.06) and zinc content (P<.02) in uninfected chicks and in those infected with coccidiosis. Sodium zeolite A tended to reduce feed intake by coccidiosis-infected chicks (coccidiosis by NZA, P<.07), but increased (P<.01) the bone zinc and decreased (P<.01) serum inorganic phosphorus in uninfected chicks and in those infected with coccidiosis.
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