When vaccine decisions are grounded in sound diagnostics and veterinary guidance, but flock performance does not improve as expected, the vaccine itself may not be the problem. It may be time to review how the product was stored, prepared and applied. Abigail Graham, DVM, MAM, DACPV, Zoetis, explains how.
For poultry companies, a successful infectious bronchitis vaccination program depends on more than choosing the right vaccine for the challenge at hand. According to Jose Linares, DVM, Ceva Animal Health, consistently high vaccine takes depend just as much on the quality of vaccine application.
In the third installment of Phibro Academy’s three-part webinar series, “Coccidiosis Tools and Strategies,” Greg Mathis, PhD, president of Southern Poultry Research, Inc., discusses anticoccidial sensitivity testing and how best to interpret results and apply them in the field.
By Douglas L. Fulnechek, DVM
Public Health Veterinarian
GTS Health
Hatchery day-of-age vaccination has been a cornerstone of broiler health for decades, but new research led by Rodrigo Gallardo, DVM, PhD, UC Davis School of Veterinary Medicine, is shedding light on the mechanisms that help it protect chicks despite the immaturity of their immune systems.
When faced with these emerging IBDV variant strains, it’s important to provide every chick the strongest possible immune start while keeping pace with a changing virus. Kalen Cookson, DVM, MAM, DAPVC, director of clinical research, Zoetis, provides vaccination strategies for poultry vets to consider.
A university challenge study has examined how recombinant HVT-ILT vaccines used at the hatchery affect the response to live, chicken-embryo-origin ILT vaccines applied later as part of a dual infectious laryngotracheitis vaccination program.
Researchers at North Carolina State University evaluated the effects of housing systems and genetic strains on broiler mobility in slow-growing strains vs fast-growing strains in both indoor and outdoor environments.
The poultry industry has spent decades chasing infectious bronchitis virus, adjusting vaccination programs and developing new vaccines as new variants emerge. Yet despite those efforts, the cycle continues. However, Mark Jackwood, PhD, one of the world’s leading IBV researchers, says that’s not a sign that vaccination has failed. It’s simply the nature of the virus.
In the second installment of Phibro Academy’s three-part webinar series, “Coccidiosis Tools and Strategies,” Greg Mathis, PhD, president of Southern Poultry Research, Inc., made it clear that effective coccidiosis control today depends less on new product development and more on how well existing strategies are combined.
The Turkey Industry Annual Report, which gathers perspectives from producers and veterinarians working in the US industry, ranked aMPV, lack of efficacious drugs and HPAI as the top three management concerns among 39 reported issues. Report author Steven Clark, DVM, said he was not surprised by the trends.
Consumer interest in poultry welfare has led to the expansion of unconventional poultry-rearing systems, such as silvopasture. Justin Lowery, MS, and a team of researchers from North Carolina State University conducted a broiler research trial comparing the impact of conventional and silvopasture production systems on the cecal microbiota of slow- and fast-growing broilers.
