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Pullorum-Tested Poultry Flocks : 1960, Department Of Agriculture, Western Australia
Pullorum-Tested Poultry Flocks : 1960, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
EARLY in 1955, an amendment to the Stock Diseases Act made blood-testing compulsory for all commercial breeding and hatchery flocks of poultry, and it was required that the incidence of infection, as determined by the last test prior to the commencement of hatching, must be less than two per cent.