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Egg laying hens are housed a variety of ways in Canada.  Every housing system is designed to provide a clean environment, fresh food and water, and protection from predators.  Additionally, every indoor housing system offers consistent temperature, humidity, lighting and air quality.  Egg farmers are continuously seeking to improve the care and well-being of their hens.

Each hen housing system has its own unique set of benefits and challenges.  Regardless of the housing system utilized, it is ultimately the farmer’s experience and expertise that enables the associated benefits to be realized and the challenges to be overcome.  The farmer, not the housing system, is responsible for achieving Canada’s world-class standards for animal care, food quality and safety.

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Leman Swine Conference: Vaccination strategies to reduce PRRS virus recombination

Video: Leman Swine Conference: Vaccination strategies to reduce PRRS virus recombination

Dr. Jay Calvert, Research Director with Zoetis, recently spoke to The Pig Site’s Sarah Mikesell at the 2023 Leman Swine Conference in St. Paul, Minnesota, USA, about his conference presentation on porcine reproductive and respiratory syndrome (PRRS) virus recombination.

“The number one problem in PRRS these days from a vaccine point of view is the emergence of new strains of PRRS. Since the beginning, we have had new strains and a lot of diversity,” said Dr. Jay Calvert. “We thought we knew it was all about mutation changes in amino acids and the individual strains over time, but they take on new characteristics.”

With the onset of more common whole genome sequencing and recombination analysis, Dr. Calvert says there is another mechanism, and recombination seems to be a key factor.