Search

This article discusses methods to improve the immune response against Mycoplasma hyopneumoniae in swine and reduce the clinical and productive impact of lung consolidations. Current strategies for controlling the disease involve pathogen monitoring, biosecurity measures, antimicrobial treatment, and vaccination. Most available vaccines are inactivated and adjuvanted whole-cell compositions. Recent studies have explored experimental vaccines with different antigens, adjuvants, carriers, and routes of administration, showing promising results in reducing lung lesions, clinical signs, and pathogen load. The article also highlights the potential of oral vaccination and the use of nanotechnological vaccines. However, further research is needed to optimize vaccine selection and parameters to enhance immune responses and efficacy. [Extracted from the article]

Copyright of Revista Brasileira de Higiene e Sanidade Animal is the property of Associacao Cientifica dos Medicos Veterinarios do Ceara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article, titled "Experimental infection of piglets with different Mycoplasma hyopneumoniae isolates," discusses the importance of Mycoplasma hyopneumoniae as a respiratory pathogen in swine production. The study aimed to evaluate the virulence of two recently isolated M. hyopneumoniae strains by infecting piglets and assessing various clinical parameters. The results showed that the new isolates were capable of inducing similar lung lesions compared to a known virulent strain. The study also found positive correlations between various parameters, indicating the impact of infection on these factors. Overall, the study suggests that the challenge with M. hyopneumoniae successfully induced the disease, regardless of the isolate used. [Extracted from the article]

Enterotoxigenic Escherichia coli (ETEC) is the major cause of diarrhea in newborn and weaned pigs. Bacteria adhesion to the host cell is considered a specific phenomenon among fimbrial and non-fimbrial adhesins with their respective receptors on enterocytes. Enteric disorders are related with the fimbriae F4 (K88), F5 (K99), F6 (987P), F41, and F18. In addition to ETEC, another category of E. coli, porcine pathogenic E. coli (PEPEC),can cause diarrhea in pigs; it produces the porcine attaching and effacing-associated (Paa) adhesin in, which is capable to cause a typical lesion known as an attaching and effacing (A/E) lesion. Immunization of sows with adhesin is important to stimulate the production of antibodies and their subsequent transfer to piglets through colostrum. The aim of this paper is to illustrate the main impacts of enteric diseases caused by E. coli in swine production and to highlight the importance of continuing research on this bacterium to improve disease prevention through vaccination. [ABSTRACT FROM AUTHOR]