Staphylococcal species in normal and mastitic milk of some domestic farm animals.

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Nuha Ibrahim El Sayed El Faki, Elfaki
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This study was done to compare Staphylococcus spp in normal milk with that of mastitic milk in different domestic animals which their milk is consumed by man. They include cows, sheep, goats and camels. A total of 499 milk samples were examined by routine bacteriological procedures for presence of Staphylococcus spp. Fifteen Staphylococcus spp. were isolated which included coagulase-positive Staphylococci and these included only Staph. aureus (8.9%), coagulase-negative novobiocin sensitive Staphylococci. These included Staph. caseolyticus (8.3%), Staph. epidermidis (3.1%), Staph. lugdunensis (6.8%), Staph. hyicus (8.9%), Staph. chromogenes (9.4%), Staph. capitis (7.8%), Staph. capitis subsp ureolyticus (11.5%), Staph. warneri (1.56%) Staph. simians (5.7%), Staph. simulans (2.6%), Staph. hominis (4.2%), Staph. carnosus (2.1%) and Staph. saccharolyticus (2.60%). Coagulase-negative Staphylococci included only Staph. scuri (1.04%). The high percentage of staphylococci in normal milk was found in camels (63.6%) followed by cows (33.3%), goats (27.1%) and then sheep (21.6%). While the high percentage of staphylococcus spp. in mastitic milk was found in goats (60%) followed by sheep (50%) and cows (35%). There was no enough number of samples from camels to detect staphylococci in their mastitic milk. The highest percentage of Staphylococcus spp. was that of Staph. capitis subsp ureolyticus. Staph. scuri was only isolated from normal milk of cows and goats.
: Staphylococcal species in normal and mastitic milk of some domestic farm animals