According to Poultry Health Today, a Brazilian study has brought the poultry industry closer to eradicating salmonellosis. The research was done to see if a commercial MLV could cross-protect against a strain of S. Heidelberg (SH) that is common to the country and is widely implicated in non-typhoidal Salmonella infections.

“The epidemiology and control of Salmonella are notoriously complex, as they depend on many factors including serotype, host, environment and geographic features. MLVs can help mitigate these factors by stimulating active immunity to a wider range of Salmonella strains,” says Eduardo Muniz, poultry veterinarian at Zoetis who took part in the study.

A commercially available vaccine based on S. Typhimurium (ST) was used in this study, done on 80 broiler chicks. The results show that the best protection was achieved by using 2 doses and then challenging the group on the 21st day. The study was published in Avian Pathology (Alderton et al. “Humoral responses and Salmonellosis protection in chickens given a vitamin-Dependent Salmonella Typhimurium Mutant”. Avian Diseases, volume 35, issue 3, pp. 435-442, 1991). You can read the full article here.

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Trish Valenzuela, CPC/ PRC • Poultry and Swine Recruiter

Trish Valenzuela is the Poultry and Swine Recruiter for the Animal Health and Nutrition division. She recruits for feed additive, international biotechnology, animal health, and integrated companies. She specializes in identifying, attracting, recruiting, and making placements for positions such as Poultry Veterinarian, Poultry Nutritionist, Sales Managers and Directors, Directors of Nutrition, Technical Support Managers, Sales Executives, Monogastric Researchers, and Nutritionists.

Visit her LinkedIn profile to connect with her and stay updated with current poultry trends. Trish can be reached at (302) 248-8242, through LinkedIn, or at