Those sheds have bird proof netting, facilities for foot bath, hand and feet wash, rain water collection system, and solar power generation.
Infections can spread to human beings if poultry is affected.
In a statement on Tuesday, FAO said those sheds had been built to improve poultry production with bio-security as the entry point, and reduce food and nutrition insecurity.
Poultry farms face massive losses specially from the infectious and pathogenic avian influenza.
To help farmers prevent this, FAO has taken up a project with the support of Bangladesh government and the USAID in five Upazilas in Khulna and Barisal.
Those sheds had been built under the project.
Secretary for fisheries and livestock Shelina Afroza was present as the chief guest at the handing over ceremony of those sheds in Barisal on Monday.
FAO representative in Bangladesh Mike Robson was also present.
He said those had been built as a pilot and one of objectives was “to improve management to reduce the risk of disease and reduce the chance of subsequent transmissibility to humans”.