The occurrence of Staphylococcus species in clinically healthy farm animals
1991
Skalka, B. (Vysoka Skola Veterinarni, Brno (CSFR))
The incidence of Staphylococcus species in healthy animals was investigated in young and adult individuals of cattle, in pigs and in domestic fowl, using the method of selective isolation of strains. A total of 6066 samples was examined; 4567 strains were revealed and they included all known species, except Staphylococcus caseolyticus, S. saccharolyticus, S. schleiferi and S. lugdunensis. 3.8 per cent of strains failed to be identified with any species. The test samples were taken from slaughtered animals, only in calves intravital smears of tonsils were examined. The species most frequently isolated from the tonsil tissue in adult cattle were as follows: S. aureus (19.9 per cent),S. saprophyticus (12.4 per cent), S. hyicus (8.8 per cent) and S. hominis (8.6 per cent). The following species were isolated from the lung tissue: S. saprophyticus (28.8 per cent), S. cohnii (10.6 per cent) and S. epidermidis (10.2 per cent); from the mammary gland parenchyma these were the species S. saprophyticus (17.4 per cent), S. xylosus (13.1 per cent) and S. epidermidis (10 per cent). In the tonsil tissue of pigs the percent proportions of S. aureus and S. hyicus were 44.5 per cent and 31.8 per cent, respectively; the most frequent species detected from the lungs were S. aureus (20.6 per cent), S. saprophyticus (12.3 per cent), S. hyicus (12.1 per cent) and S. epidermidis (11.5 per cent). In domestic fowl the most frequently occurring species were S. epidermidis (23.7 per cent), S. gallinarum (16.5 per cent) and S. aureus (15.4 per cent). In calves the incidence of S. xylosus (37 per cent), S. saprophyticus (19.2 per cent ) and S. cohnii (15.2 per cent) was found to be highest. The incidence of the other Staphylococcus species in all test animals can be expressed by low percentages.
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