Abstract
The diarrhea in calves, caused by Salmonella spp., provocates serious economic damage to cattle farming. This study aimed was to verify the occurrence of diarrhea and the isolation of strains of Salmonella spp. in diarrheal feces of calves from farms located in the Sertão from the state of Alagoas municipalities, and to characterize the in vitro resistance profile of Salmonella spp. isolated against conventional antimicrobials. The study was carried out with 431 calves from 10 to 90 days old. Of the total number of animals evaluated, 111 presented a diarrhea table, being analysed 111 samples of diarrhoeal faeces. The samples were sown in enrichment broths and selective culture media and the phenotypic and molecular characterization were performed. Among the animals evaluated, 25.75% (111/431) had diarrhea. The presence of Salmonella spp. was evidenced in 13.33% (2/15) of the studied establishments. Have been isolated 2.71% (3/111) strains of Salmonella spp. and have all been shown to be resistant to Cefotaxime and sensitive to Ciprofloxacin, Gentamicin, Amoxicillin, Ampicillin and Norfloxacin. Salmonella spp. and other infectious agents associated with diarrhea were confirmed in calves in the Sertão Alagoas mesoregion. The antimicrobial potential of the tested drugs reinforces the importance of their responsible and judicious use in the treatment of Salmonellosis, not being indicated the antibiotic therapy with Cefotaxima. The treatment based on Gentamicin, Amoxicillin, Ampicillin, Ciprofloxacin and Norfloxacin in the treatment of these animals, is recommended.
Highlights
Diarrhea in calves often occurs due to infection with Salmonella spp., which is a bacterium of great zoonotic potential and considered one of the important gastrointestinal pathogens related to foodborne diseases, defined by Salmonellosis (Pereira et al, 2004; Assis-Brasil et al, 2013)
A population of 5,274 calves from zero to 12 months was considered, according to 2019 data provided by the Defesa Agropecuária do Estado de Alagoas (ADEAL), with precision of 4.5%, confidence interval of 95% and an anticipated frequency of 50%, because the actual diarrhea situation is unknown in the region
The existence of diarrhea from Salmonella spp. was reported in 36% (18/50) of the properties in the study by Bilbao et al, (2018) carried out in the Mar y Sierras dairy basin in Argentina, where eight establishments presented more than one positive calf
Summary
Occurrence and antimicrobial resistance profile of Salmonella spp. in calves from the Mesoregion Sertão of Alagoas, Brazil. Diarrhea in calves often occurs due to infection with Salmonella spp., which is a bacterium of great zoonotic potential and considered one of the important gastrointestinal pathogens related to foodborne diseases, defined by Salmonellosis (Pereira et al, 2004; Assis-Brasil et al, 2013). For the effective treatment of animals with diarrhea by Salmonellosis, it is recommended to previously perform the isolation and identification of these agents in the laboratory, as a definitive proof in the diagnosis of the disease, complemented with in vitro antimicrobial sensitivity analysis (antibiogram), and consider the judicious use of antibiotics (Mota et al, 2005; Marques et al, 2013)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
