Culling day-old male chicks from egg-laying hens is an on-going dilemma for the global poultry industry, resulting in the culling of 7 billion male chicks annually. At the 2025 International Poultry Scientific Forum, Yuval Cinnamon, PhD, outlined the work his research team has done on the Golda hen and optogenetics — a blue-light treatment — to halt the development of male chicks and thereby the need for culling.
As poultry companies weigh cost and efficiency with higher animal welfare standards, research comparing conventional and slow-growing broiler breeds showed that the slow-growing chickens displayed behaviors more closely associated with positive welfare.
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.
Mobility and leg problems are common in modern-day broilers, which are bred for high breast-muscle yield. Extra activity can help the birds support the extra bodyweight and prevent skeletal disorders. Could colored lighting encourage broilers to be more active and less prone to leg problems?
By Bruce Stewart-Brown, DVM, DACPV
Chief Science Officer
Perdue Farms
By Marcelo Lang, DVM
Farsight Consulting & Marketing Services, LLC
Broiler activities like locomotion and movement can be quantified using the broiler activity index (BAI), which has been associated with broiler leg health, productivity and physical conditions. However, current calculation procedures are not user-friendly, requiring extensive training. A new user-friendly web-based AI system could be the answer.
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.
In the face of threats such as highly pathogenic avian influenza (HPAI), one of the most pressing challenges for the poultry industry is to continually evaluate and improve depopulation strategies.
Responsible antibiotic use is not a new concept to the poultry or other food-animal production sectors, but, says Randy Singer, DVM, PhD, it’s important to put the conversation back in the context of the Veterinarian’s Oath, and first ensure the safety, health and overall well-being of the animals.
Increased attention on animal welfare is driving the US poultry industry to innovate and work collaboratively to meet rising expectations of caring for laying hens.
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