Lameness in poultry, characterized by impaired mobility or abnormal gait, is a major concern in fast-growing birds such as broilers and turkeys. Intensive genetic selection for rapid body weight gain and increased breast muscle mass can result in disproportionate growth between the muscular and skeletal systems, predisposing birds to locomotor problems. Stephanie Kulbacki, University of Georgia, provides an overview of lameness and ways to assess gait.
Extreme weather events, such as heat waves, droughts, freezing conditions, floods, tornadoes, and hurricanes, can affect poultry flocks in many ways. The severity of their impact depends on both the type of event and the geographic location.
Japanese quail (Corturnix corturnix japonica) are the smallest farmed birds and contribute to approximately 10% and 0.2% of the global table egg and meat markets. Rosie Whittle, PhD, discusses housing, management and key welfare issues associated with farming these birds.
Currently, 38.7% of laying hen housing systems in the United States are cage-free and this transition continues to increase. However, little attention has been given to pullet housing systems. In this article, Richard Blatchford, PhD, University of California, Davis, provides important considerations for pullet management.
As animal welfare science has evolved, the importance of using animal-based measures to study welfare has become apparent. Birds may have needs and feelings that aren’t immediately obvious to humans, and their priorities are influenced by an evolutionary history that is vastly different than our own.
For every laying hen that is hatched, approximately one male counterpart also hatches. However, as roosters do not produce eggs, they are typically culled, or euthanized, at hatch. However, the culling of these day-old male chicks raises ethical concerns.
Beak trimming is common in the management of laying hens, involving the removal of a portion of a bird’s beak to minimize harmful behaviors. While beak trimming helps reduce injuries among birds, the technique has also raised animal welfare concerns. Thus, farmers and researchers are continuing to explore ways to manage hens without the need to trim their beaks.
While some mortality is expected in all layer flocks, regardless of the housing type or breed, the rate and causes can vary depending on the production system. Cage-free systems may not inherently have higher mortality than cages and experience in managing birds in cage-free systems plays a big role in maintaining low mortality.
The ancestor of the modern-day chicken, the red jungle fowl, was exposed to different spectra of light in their natural habitat. The surrounding environment, vegetation, season and time of day all affect the color of light exposure to the wild bird, which may have lingering behavioral effects on present-day poultry.
The microbiota found in the guts of chickens is responsible for more than the breakdown of food products. It also impacts immune response, the enteric nervous system and cell function. An imbalance can affect disease resistance, and heighten stress and fear responses.
Once the market weight is achieved in turkeys, they are herded, loaded and transported to slaughter plants for stunning and processing, but these events of known as “live haul” can pose risks to animal welfare throughout the process.
Enrichment improves the environment of an animal, to meet their behavioral needs and ultimately improve their welfare. Although the research related to enrichments for broiler breeders is sparse, there are several different types of enrichments that have been shown to be beneficial. In this article, Marcela Quino and Bethany Baker-Cook, PhD, describe a few that are particularly effective for broiler breeders.
