Medicamentul Veterinar (Dec 2023)
Data on the evolution of the resistance phenomenon to anti-infectives in 16 pig breeding units from Banat
Abstract
Respiratory and digestive diseases of bacterial origin in pigs can cause severe symptoms with major economic impact on farms. Out of all the pathogens, E. coli represents an important factor in the occurrence of enteric syndrome, producing significant material damage by decreasing productivity, associated with increased production costs associated with low profitability indices. In this sense, the present study proposes highlighting the main epidemiological aspects and etiopathogenic in pigs around the weaning age from 16 pig breeding units located in the western part of Romania. The objectives of the study were: the identification of specific anatomical-pathological lesions, bacteriological examination, and biochemical identification of pathogenic germs using the API 20E method. From the biological material taken from the pigs, 139 samples were collected from the lungs, portions of the liver, small intestine, spleen and mesenteric lymph nodes, which were later microbiologically analyzed. In descending order, E. coli was identified in most samples, followed by Streptococcus suis and β-haemolytic E.coli equally. With a much lower incidence, the microbiological examination showed Salmonella spp and Pasteurella multocida relevant, and pathogens from the genus Klebsiella spp, Serratia marcescens, Morganella morganii, Actinobacillus pleuropneumoniae and Mannhemia haemolytica had a sporadic incidence. In conclusion, the diseases identified in the 16 farms in Banat studied were predominantly digestive and were mostly caused by E. coli, which had high incidence rates, especially in the pig youth categories. The most common anatomic-pathological changes identified were: abdominal distension, loops of the small intestine full of gas, the contents of the colon having a pasty-watery consistency with much thinned walls, proliferative ileitis, enlarged mesenteric lymph nodes and a distended stomach with a gelatinous content. Acknolegdements This work appeared within the project: Program for increasing performance and innovation in doctoral and postdoctoral excellence research - PROINVENT, Contract no. 62487/03.06.2022 POCU/993/6/13 - SMIS code: 153299
