Buffaloes and pigs play an important epidemiological roll in the Salmonella infection cycle, and asymptomatic animals can act as key component in the dissemination of the disease by horizontal, vertical, and cross-species transmission. Our study aimed and was able to confirm evidences of a cross-species transmission of Salmonella Agona between asymptomatic buffaloes and pigs. Also, we described Salmonella infection within the pig production phases, involving serotypes Agona, Senftenberg and Schwarzengrund. Rectal samples were collected from Jafarabadi buffaloes (n = 25) and Piau pigs (n = 32), located on a single farm. Salmonella Agona was isolated from lactating buffaloes, gilts, pregnant sows, and weaned pigs, Salmonella Schwarzengrund from lactating sows and Salmonella Senftenberg from gilts, pregnant sows, lactating sows, and weaned pigs. Pulsed-field Gel Electrophoresis protocol (PFGE) was performed and revealed four different profiles. Profile 1 (Salmonella Agona), isolated from a pregnant sow, a gilt and two lactating buffaloes, revealed a indistinguishable PFGE pattern, confirming evidences of potential cross-species transmission. Profile 2 (Salmonella Agona), 3 (Salmonella Senftenberg), and 4 (Salmonella Schwarzengrund), isolated from pigs, revealed important indistinguishable PFGE patterns, evidencing Salmonella infection within the pig production phases. Considering the epidemiological relevance of buffaloes and pigs in the cycle of Salmonella infection, confirmation of a potential cross-species transmission of Salmonella Agona and potential Salmonella infection within the pig production phases highlights the importance of the correct establishment of preventive health strategies in farms, in special the importance of avoiding contact between buffaloes and pigs, since cross-species transmission can occur, increasing the risk of spreading the disease.

水牛和猪在传染病流行中起重要作用。 沙门氏菌感染周期和无症状动物可以通过水平，垂直和跨物种传播而成为疾病传播的关键组成部分。我们的研究旨在并且能够证实跨物种传播的证据。沙门氏菌无症状水牛和猪之间的Agona。另外，我们描述了沙门氏菌在猪生产阶段感染，包括血清型Agona，Senftenberg和Schwarzengrund。从Jafarabadi水牛（ñ = 25）和Piau猪（ñ = 32），位于单个服务器场上。 沙门氏菌 Agona是从泌乳的水牛，小母猪，怀孕的母猪和断奶的猪中分离出来的， 沙门氏菌 Schwarzengrund来自哺乳母猪和 沙门氏菌Senftenberg来自小母猪，怀孕母猪，泌乳母猪和断奶的猪。进行了脉冲场凝胶电泳协议（PFGE），并揭示了四个不同的配置文件。资料1（沙门氏菌从怀孕母猪，后备母猪和两个哺乳的水牛中分离出的Agona）表现出难以区分的PFGE模式，证实了潜在的跨物种传播的证据。资料2（沙门氏菌 Agona），3（沙门氏菌 Senftenberg）和4（沙门氏菌 从猪中分离出的Schwarzengrund）表现出重要的，难以区分的PFGE模式，证明 沙门氏菌猪生产阶段感染。考虑水牛和猪的流行病学相关性。沙门氏菌 感染，确认潜在的跨物种传播 沙门氏菌 Agona和潜力 沙门氏菌 猪生产阶段的感染强调了在农场中正确制定预防性健康策略的重要性，特别是避免水牛和猪之间接触的重要性，因为可能发生跨物种传播，从而增加了传播疾病的风险。