Effect of synbiotic supplementation on layer production and cecal Salmonella load during a Salmonella challenge
Effect of synbiotic supplementation on layer production and cecal Salmonella load during a Salmonella challenge
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DOI：
10.3382/ps/pex251
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发表时间：
2017-12-01
期刊：
影响因子：
4.4
通讯作者：
Selvaraj, R.
中科院分区：
文献类型：
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作者：
Luoma, A.;Markazi, A.;Selvaraj, R.
本研究分析了合生素产品（PoultryStar（A（R））me）对产蛋鸡生产参数、肠道菌群分布和免疫参数的抑制作用，以及沙门氏菌的挑战。合生素产品含有4种益生菌菌株（罗伊氏乳杆菌、屎肠球菌、动物双歧杆菌和乳酸片球菌）和益生元低聚果糖。蛋鸡从孵化到28周龄补充合生元。在16周龄时，用肠道沙门氏菌（SE）疫苗接种或不接种疫苗。在24周龄时，用1 × 10（9）CFU SE攻毒一部分鸡或不攻毒，导致3（接种疫苗、攻毒或接种疫苗和攻毒）× 2（对照和合生元）析因处理安排。在18和20周龄时，在接种和未接种组中饲喂合生元的鸡比未补充组增加了更多的BW（P < 0.05）。在19、20、21、22和23周龄时，与未补充合生元的鸡相比，饲喂合生元的鸡的产蛋量（HDEP）分别高出0.7%、17.8%、21.7%、3%和4.2%（P < 0.05）。在给予SE攻击后，与未补充的鸟相比，补充的鸟在24、25、26、27和28周龄分别具有高3%、6.7%、4.3%、12.5%和14.4%（P < 0.05）的HDEP。与疫苗接种状态无关，与未补充组相比，饲喂合生元并用SE攻击的禽类具有较低（P < 0.05）的SE盲肠负荷。在22天后沙门氏菌的挑战，鸟类补充，接种疫苗，并挑战了最高的胆汁伊加含量。可以得出结论，合生素产品的补充可能是有益的蛋鸡日粮作为一个生长促进剂，性能增强剂，并防止SE感染。
This study analyzed the inhibitory effects of a synbiotic product (PoultryStar(A (R)) me) on production parameters, intestinal microflora profile, and immune parameters in laying hens with and without a Salmonella challenge. The synbiotic product contained 4 probiotic bacterial strains (Lactobacillus reuteri, Enterococcus faecium, Bifidobacterium animalis, and Pediococcus acidilactici) and a prebiotic fructooligosaccharide. Layers were supplemented with the synbiotic from d of hatch to 28 wk of age. At 16 wk of age, birds were either vaccinated with Salmonella enterica Enteritidis (SE) vaccine or left unvaccinated. At 24 wk of age, a portion of the birds was challenged with 1 x 10(9) CFU of SE or left unchallenged, resulting in a 3 (vaccinated, challenged, or both vaccinated and challenged) X 2 (control and synbiotics) factorial arrangement of treatments. At 18 and 20 wk of age, birds fed synbiotics in both vaccinated and unvaccinated groups had increased (P < 0.05) BW more than those in the un-supplemented groups. Birds fed synbiotics had 0.7, 17.8, 21.7, 3, and 4.2% higher (P < 0.05) hen d egg production (HDEP) at 19, 20, 21, 22, and 23 wk of age, compared to the birds without supplementation, respectively. After administering the SE challenge, supplemented birds had 3, 6.7, 4.3, 12.5, and 14.4% higher (P < 0.05) HDEP at 24, 25, 26, 27, and 28 wk of age, compared to the birds not supplemented, respectively. Irrespective of the vaccination status, birds fed synbiotics and challenged with SE had a lower (P < 0.05) SE cecal load compared to the un-supplemented groups. At 22 d post Salmonella challenge, birds supplemented, vaccinated, and challenged had the highest bile IgA content. It can be concluded that supplementation of the synbiotic product could be beneficial to layer diets as a growth promoter, performance enhancer, and for protection against SE infection.