Breed standards

The breed used for each country is shown in the table below. See the References section for the full name and URL for each source.

Poultry

Country	Breed
Brazil	Cobb 500
China	Cobb 500
France	Ross 308
Germany	Ross 308
India	Vencobb 400
Italy	Ross 308
Netherlands	Ross 308
Poland	Ross 308
Spain	Ross 308
United Kingdom	Ross 308
United States of America	Cobb 500

Notes

• If multiple performance targets were supplied, the “as hatched” performance was used.

• We applied the same breed standard to all broilers in each country. This is a more reasonable assumption for some countries than others. In China for example, a significant proportion of broiler production uses domestic “yellow-feather” breeds which do not have the same performance as the white-feather breeds represented here (source: https://apps.fas.usda.gov/newgainapi/api/Report/DownloadReportByFileName?fileName=Poultry and Products Annual_Beijing_China - Peoples Republic of_08-01-2020). We suggest setting the Achievable % of breed standard to less than 100% to account for this.