[Microflora studies of broiler density breeding]

In rooms with a condensed raising of broilers were carried out mycological studies of samples of air, floor-covering materials, feeding mixes--degree of semination, isolation of toxic and pathogenic species, presence of mycotoxins. Experiments were carried out also on pathological materials (lungs, gizzard) from dead, ill or suspectedly healthy broilers in order to prove mycotic agents. It was proved that the semination of air with mycotic spores was considerably higher in comparison with the data of the investigations carried out in rooms housing 16--18 broilers on 1 m(2). It was also established that there was a vertical spreading of spores in the rooms, the sources of mycotic infection was a vertical spreading of spores in the rooms, the sources of mycotic infection and the most frequent species of fungi. Steps are pointed out in order to abolish mycotic diseases and reduce to a minimum their harmful effect of mycotic toxins on the organic system of poultry.