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Aggressive vaccination of broiler breeders needed to keep reovirus in check

Zavala headshot

Aggressive vaccination of broiler breeders for reovirus using live and inactivated vaccines has been one of the most important steps the US poultry industry has taken to maintain good protection against the disease, Guillermo Zavala, DVM, PhD, president of Avian Health International, told Poultry Health Today.



Why infectious bronchitis is so resilient — and what broiler companies can do about it

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Control of infectious bronchitis (IB) requires good biosecurity, good management and rigorous administration of a vaccine that matches the circulating virus as closely as possible, John Smith, DVM, MAM, Alectryon LLC, formerly with Fieldale Farms, told Poultry Health Today.



Virulent ND outbreaks underscore need to rethink vaccination program

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Since May 2018, USDA has confirmed more than 400 cases of virulent Newcastle disease (ND) in California. The outbreak started in backyard chicken flocks, but the disease has also reached at least three commercial layer operations. “This situation underscores the importance of making sure our ND vaccination programs are up-to-date,” Phil Stayer, DVM, Sanderson Farms, writes in an article for Poultry Health Today.




Ensuring strong immunity key to successful ‘no antibiotics ever’ broiler production

egg hatching

Producers raising broilers with no or fewer antibiotics need to pay more attention to diseases that can compromise flock immunity and make birds more susceptible to primary and secondary infections, according to poultry specialists at an industry roundtable.



Tuning up live-vaccine priming for infectious bursal disease and reovirus

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In an interview with Poultry Health Today, Kalen Cookson, DVM, MAM, explained why live priming of breeder pullets for infectious bursal disease virus (IBDV) and reovirus is important. “By initiating an immune response with live vaccines, pullets respond better and more uniformly to the killed IBDV and reovirus vaccines they’ll need later.”



Infectious bursal disease: ‘It’s never black and white’

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Daral Jackwood, PhD, Ohio State University, is known as the go-to expert on infectious bursal disease (IBD). In a far-ranging interview with Poultry Health Today, he talked about how IBD variants emerge, vaccine selection, viral shedding and the spread of the virus, the merits of vaccine rotation and special considerations for antibiotic-free production schemes.