Effect of essential oil compound on shedding and colonization of Salmonella enterica serovar Heidelberg in broilers
Effect of essential oil compound on shedding and colonization of Salmonella enterica serovar Heidelberg in broilers
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DOI：
10.3382/ps.2012-02783
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发表时间：
2013-03-01
期刊：
影响因子：
4.4
通讯作者：
Faltys, G.
中科院分区：
文献类型：
--
作者：
Alali, W. Q.;Hofacre, C. L.;Faltys, G.
本研究的目的是确定在饮用水中加入一种精油混合物（EO、香芹酚、百里香酚、桉树醇、柠檬）对肉鸡生产性能、死亡率、耗水量、作物和盲肠的pH值以及海德堡沙门氏菌感染和停饲后肠沙门氏菌血清型粪便脱落和定植的影响。雏鸡被随机分配到含有0.05、0.025或0.0125% EO的水处理和未处理的对照组。分别在第0 ~ 7天和第35 ~ 42天进行饮水处理。在第1天，一半的雏鸡感染了海德堡沙门氏菌，并与未感染的雏鸡放在一起。在42天的研究期间，测定了生产性能、死亡率、耗水量和pH值。在拖拭子（0、14和42 d）和盲肠和作物（42 d）中测定海德堡沙门氏菌的流行情况。饮用水中添加0.05% EO显著（P < 0.05）降低了攻毒鸟作物中海德堡沙门氏菌的定植，显著降低了饲料系数，与对照组相比增加了增重。与对照组相比，饮用水中添加0.025%和0.015%的EO显著降低了饲料系数，增加了增重，但未显著减少作物中海德堡沙门氏菌的定植。饮用水中添加EO对肉鸡盲肠中海德堡沙门氏菌的定植和粪便排出没有显著影响。本研究中使用的EO在饮用水中施用时可以控制肉鸡作物中的海德堡沙门氏菌污染，因此可以减少禽鸟加工时胴体交叉污染的可能性。
The objectives of this study were to determine the effect of an essential oil blend (EO; carvacrol, thymol, eucalyptol, lemon) administered in drinking water on the performance, mortality, water consumption, pH of crop and ceca, and Salmonella enterica serovar Heidelberg fecal shedding and colonization in broiler birds following Salmonella Heidelberg challenge and feed withdrawal. Chicks were randomly assigned to water treatments containing 0.05, 0.025, or 0.0125% EO or untreated controls. Treatments were administered in drinking water on 0 to 7 and 35 to 42 d. One-half of the chicks were challenged with Salmonella Heidelberg and placed in pens with unchallenged chicks on d 1. Performance, mortality, water consumption, and pH were determined during the 42-d study. Prevalence of Salmonella Heidelberg was determined on drag swabs (0, 14, and 42 d) and in the ceca and crops (42 d). The 0.05% EO administered in drinking water significantly (P < 0.05) reduced Salmonella Heidelberg colonization in crops of challenged birds, significantly lowered the feed conversion ratio, and increased weight gain compared with controls. The 0.025% and 0.015% EO in drinking water significantly lowered the feed conversion ratio and increased weight gain compared with controls, but did not significantly reduce Salmonella Heidelberg colonization in the crops. The EO in drinking water did not significantly reduce Salmonella Heidelberg colonization in ceca or fecal shedding in broilers. The EO used in the study may control Salmonella Heidelberg contamination in crops of broilers when administered in drinking water and therefore may reduce the potential for cross-contamination of the carcass when the birds are processed.