DSS40 yucca saponin was fed at 63 ppm (approximately .9 ppm active steroid saponin) in an experiment using 768 commercial male broilers to evaluate its effects on broiler performance and suppression of ammonia release from poultry manure.Broilers receiving yucca saponin were significantly heavier than controls at 28 and 51 days of age. There were no significant differences in feed efficiency, mortality, shank pigmentation, or ammonia levels. (
DSS40 yucca saponin was fed at 63 ppm (approximately .9 ppm active steroid saponin) in combination with monensin at 99 ppm or 121 ppm in an experiment using 1224 commercial straight-run broilers.Yucca saponin added to broiler diets did not significantly increase body weights; however, it improved (P<.05) feed efficiency of broilers when fed with 121 ppm of monensin. Results showed no significant differences in mortality, shank pigmentation, or litter moisture. (
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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