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anas造句
31. Effect of feeding Zn-Met_2 chelate on Anas platyrhynchos production performance, energy and protein metabolism was studied, and the suitable dose that Zn-Met_2 chelate should be added was decided. 32. Any of various ducks, chiefly of the genus Anas, including the mallards, teals, and shovelers , that feed by dabbling in shallow water and are favored as game birds. 33. Male mallard ducks (Anas platyrhynchos) are famous for their long, spiraling genitalia.