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 move to cage-free egg production in the US and Europe created a seismic change in hen breeding programs.
The move to cage-free egg production has spawned a new generation of aviary systems available for hen housing. The question now is how well the new systems perform when balancing egg production and profitability with bird welfare.
Change is constant and there’s always a learning curve. Such was the case around 2017, as pressure built toward more cage-free housing systems for egg-laying hens along with the push to reduce antibiotics or antibiotic substances in animal diets.
Consumers, retail customers and even legislators in some states are embracing cage-free egg production, necessitating a shift in the laying-hen industry.
Breeding birds for efficient cage-free production requires developing healthy hens that lay an egg every day for 100 weeks and possibly up to 200 weeks in the future, reported Sijne Van der Beek, PhD, chief technology officer, Lohmann Breeders, The Netherlands.
By Alexander W. Strauch, DVM
Four Star Veterinary Service, LLC
Minton Veterinary Service Office
Chickasaw, Ohio
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