This biosecurity manual reflects the minimum standard to apply to all poultry operations. Some elements may not be relevant to certain species, in particular those referring to a batch type operation as it is practiced in the broiler industry. While ratites (emus and ostriches) are classified as poultry, their size and production practices are substantially different from those of other species. For this reason, several of the requirements do not generally apply to the production of ratites but do apply to the sheds used for incubation/ hatching and the enclosed brooder sheds holding young ratite chicks. The paragraphs which have such.