SAO PAULO (Reuters) -Brazil, the world's largest chicken exporter, on Friday reported its first case of highly pathogenic avian influenza - also known as bird flu - on a commercial farm, triggering fears over global poultry supply chains.

Brazil, the world's largest chicken exporter, confirmed its first outbreak of bird flu on a poultry farm on Friday, triggering protocols for a country-wide trade ban from top buyer China and state-wide restrictions for other major consumers.