Long-term broiler performance with bambermycins and bambermycins plus roxarsone.

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Johnston NL, Quarles CL, Fagerberg DJ

Long-term broiler performance with bambermycins and bambermycins plus roxarsone.

Poult Sci. 1983 Jul;62(7):1189-94.

PubMed ID
6604910 [ View in PubMed
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Abstract

Bambermycins and bambermycins plus roxarsone were fed to broilers in ten consecutive experiments to determine if response (measured by body weight and feed efficiency) was continuous over a long term. Bambermycins was added at 1.1 ppm (1 to 44 days) and 2.2 ppm (45 to 51 days) to both test rations. In addition, one test ration contained roxarsone (3-nitro-4-hydroxyphenylarsonic acid) at 50 ppm (1 to 44 days). Each experiment was conducted with 1,080 commercial broiler cross-run chickens. Broilers fed bambermycins and bambermycins plus roxarsone were heavier (P less than .05) than controls in every experiment. Bambermycins plus roxarsone treated broilers were heavier (P less than .05) than bambermycins treated broilers in 2 out of 10 experiments. Broilers fed bambermycins converted feed more efficiently (P less than .05) than controls in 6 of 10 experiments and were more efficient (P less than .05) than bambermycins plus roxarsone fed broilers in 1 of 10 experiments. Bambermycins plus roxarsone treated broilers were more efficient (P less than .05) than controls in 5 of 10 experiments. These findings indicate that over a long term bambermycins and bambermycins plus roxarsone consistently and significantly (P less than .05) increased broiler body weights over controls, although the addition of roxarsone was not always effective in increasing body weights or improving feed efficiency over bambermycins fed alone.

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