A sudden drop in egg production is a concern for every poultry farmer. When eggs become pale, their shells thin or some are laid without shells, egg drop syndrome, known as EDS, is one of the possible causes to consider. This viral disease affects laying hens. The birds may appear healthy, even as their production and egg quality decline.
Spot the signs without jumping to conclusions
Observe the number of eggs collected, their appearance and the condition of the flock each day. A discoloured, fragile or absent shell, combined with a drop in egg production, warrants a prompt check. Note when the changes began, which poultry houses are affected and how production is changing. This information will help the veterinarian assess the situation.
EDS is not the only possible explanation. Infectious bronchitis, Newcastle disease, significant stress, an unbalanced ration or an insufficient supply of water can also disrupt egg production or shell formation. In hot weather, check access to clean water at all times and ventilation especially carefully. Also make sure that the feed is suitable for layers and is distributed regularly.
Good practices on the farm
At the first signs, limit movement between flocks and avoid sharing equipment without cleaning it. Step up the cleaning of drinkers and equipment, remove broken eggs and keep visitors away from the chicken coop. Follow the principle of working from healthy flocks to suspected flocks, then wash and change your footwear or clothing before returning to the other poultry.
Contact a veterinarian or poultry technician to examine the flock and arrange tests if necessary. The diagnosis cannot be confirmed based on shell colour alone. Do not administer antibiotics on your own initiative: they do not treat a virus, and inappropriate use can complicate disease management.
Prevention relies on regular biosecurity, well-managed supplies of water and feed, and a vaccination programme suited to the poultry farming context, drawn up with a professional. In Côte d'Ivoire, also take into account the movement of poultry and equipment between farms: this can promote the spread of infectious agents.
Act quickly
If egg production drops alongside pale or fragile shells, record your observations, secure the flock and seek professional advice without delay. An early response helps distinguish EDS from other causes and protect the rest of the flock.
--- *Source: NEXTEKCI — In-house expertise — summary and analysis by NEXTEKCI.*