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Vertically Transmitted Diseases

Some diseases are known to be transmitted from infected breeders to their progeny (vertical transmission). The production and maintenance of disease-free breeders is the first step in the control of these diseases at the commercial level. All breeders directly under Hy-Line's control are free of Mycoplasma gallisepticum, Mycoplasma synoviae, Salmonella pullorum, Salmonella gallinarum (typhoid), Salmonella enteritidis, and lymphoid leukosis. Due to the possibility of horizontal transmission of any of these diseases, subsequent generations may not remain free (these generations are not under Hy-Line's control). It is the responsibility of the owners of the breeding and commercial flocks to prevent horizontal transmission of these diseases and to continue testing to be assured of a negative status.

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