Most poultry companies invest significant resources in infectious bronchitis vaccination programs. But according to one of the poultry industry’s leading infectious bronchitis virus researchers, Mark Jackwood, PhD, Ceva Animal Health, one critical question often receives less attention than it should: How do you know the program worked?
The poultry industry is increasingly focused on extending the productive lifespan of laying hens beyond 100 weeks to enhance welfare, sustainability and profitability. A major challenge in achieving this goal is the age-related decline in eggshell quality. Supplementation with phytase and dacitic tuff breccia could be the answer, according to a study from North Carolina State University.
Drawing on more than 70,000 hatchery vaccination audits conducted through Ceva Animal Health’s C.H.I.C.K Program, Alba Pfaff, MS, the company’s senior technical marketing manager, discusses what helps hatcheries maintain high vaccination standards, the details that matter most and how better use of data could support even greater consistency.
Modern commercial chicks hatch into a very different world than they would under natural conditions. According to Ivan Rychlik, DVM, researcher at the Czech Republic’s Veterinary Research Institute, that difference has major consequences for gut health, disease resistance and antibiotic use.
Today’s cage-free laying systems provide extra vertical space for birds to be physically active, which can lead to variability in feed intake and body composition. If feed was restricted, would chickens change their activity levels, or would a hypothalamic response be triggered to increase feed intake?
When it comes to resisting bird flu, chickens on poultry farms are like sitting ducks. Last year, a highly pathogenic avian influenza virus, H5N1, ripped through poultry farms across the US, prompting farmers to cull tens of millions of chickens to contain the outbreaks. But far-UVC light may offer a safe and practical way to inactivate any type of virus in the air, reducing the chance of transmission.
In nature, fear protects animals from danger. In commercial settings, domestic laying hens are shielded from most fear-inducing stimuli, such as predators and unfamiliar situations. Therefore, fear serves as an aversive experience for the hens themselves and leads to undesired behaviors for producers.
Amino acid requirements for laying hens are not well understood, primarily because data are lacking for the pullet stage. This gap is increasingly important as the table-egg industry wants to extend the hen’s life cycle to 100 weeks or more. Jo Ann Chew, graduate research assistant, University of Alberta, investigated how amino acid levels during rearing might impact body fat and the onset of lay.
In the United States, the majority of laying hens are housed in conventional cages. However, there has been a shift towards cage-free systems. Cage-free systems can benefit laying hen welfare. Birds have opportunities to perform a full range of species-specific behaviors, including foraging, dustbathing, perching, and walking, which are restricted in conventional cages.
Poultry researchers use ‘affective valence’ — a positive or negative emotional response — as a measure of animal welfare. Tom Smulders, PhD, an evolutionary neurobiology researcher from Newcastle University, has studied whether hippocampal neurogenesis can be a marker of affective valence in poultry.
Brazilian researchers conducted a two-part epidemiological study to determine the serological, molecular and pathological status of ILT in two regions. The team described their findings and what they mean for poultry producers.
The International Poultry Welfare Alliance brings together expertise from across the value chain to develop Key Welfare Indicator Reference Guides for broilers, turkeys and layers, which align measurements and communications of welfare outcomes.
