Home / Standards / GB/T 41189-2021 GB/T 41189-2021 Active Nutrient requirements of egg duck 蛋鸭营养需要量 Standard Type GBT ICS 65.020.30 CCS B43 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 农业农村部 Drafting Unit N/A