In the operating hatchers, the con- tamination of air by aerobic bacteria, coliform, 2 and fungi was high, measuring over 300 cfu/63.6 cm .
In the egg sorting room, contamination was moderate, whereas in the remaining sampling sites such as the setter room, candling-transfer room, and chick count- ing room, contamination was minimal, measuring less than 10 cfu/63.6 cm2 for aerobic bacteria, 5 cfu/63.6 cm2 for coliform, and 2 cfu/63.6 cm2 for fungi.
In the operating hatchers, the con- tamination of air by aerobic bacteria, coliform, 2 and fungi was high, measuring over 300 cfu/63.6 cm .In the egg sorting room, contamination was moderate, whereas in the remaining sampling sites such as the setter room, candling-transfer room, and chick count- ing room, contamination was minimal, measuring less than 10 cfu/63.6 cm2 for aerobic bacteria, 5 cfu/63.6 cm2 for coliform, and 2 cfu/63.6 cm2 for fungi.
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