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. (
Much research concerned with enrichment and plating methodology to detect salmonella contamination in foods has been reported by many scientists. This review brings reported findings of major proponents together into one text for greater understanding and appreciation of the complexity of the problem. Discussed in this review are reported applications and mechanisms of 11 enrichment media and eight plating media, incubation temperatures and times, and serotype specificity involving enrichment and plating media. Also, enrichment emulsifying agents, agitation during incubation, sample type, and level and proportion of salmonellae and competitors as related to salmonella enrichment are discussed. Other factors related to salmonella recovery, such as multiple media methods, preparation methods, storage of media, and media brand are included in this review, as well as a discussion of the methodology dilemma and some general recommendations for future direction.
Duplicate trials were conducted with male broiler chickens to evaluate virginiamycin as treatment against experimentally induced necrotic enteritis infection. Each trial consisted of seven treatments, each replicated four times, with 10 birds per replicate. Two treatments were fed control ration (noninfected control and infected control) and the five remaining treatments were fed virginiamycin at 5, 10, 15, 20, or 40 g/ton. Birds were orally dosed with 10 ml of Clostridium perfringens culture at 14 days of age. At 5 weeks of age, surviving birds were killed and necropsied to obtain lesion scores. Birds fed virginiamycin had significantly less mortality and lower intestinal lesion scores than nonmedicated birds when experimentally infected with necrotic enteritis.
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. (
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