Aerobic Bacteria of Bovine Milk in the Sudan

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Isam El din Mamoun Mohamed, Mohamed
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University of Khartoum
The objective of this research was to determine types of aerobic bacteria in 949 composite milk samples collected from the University of Khartoum, Kuku, Kaffory, Elobeid, Atbara and El Nisheisheiba dairy farms. In addition 66 can samples were examined using agar plate method to determine the viable bacterial populations. Many types of organisms were isolated with variable degrees of frequency. The rate of isolation of staphylococci ranged between 39.8% to 81.5%. The ratio of coagulase positive staphylococci varied between 9.86% to 42.45%. Streptococci were isolated from 31.19%. Alpha- haemolytic streptococci were the lowest (17.23%), Beta- haemolytic streptococci were 18.24% while Gama–haemolytic streptococci were 26.01%. In 42.38%, the type of haemolysis was not possible to identify. Mycobacteria were isolated from two out of the 130 samples from Kuku area. Nocardia asteroides were recovered from three milk samples collected from El Obeid. Other Gram- positive bacteria found were Bacillus spp. (16.23%), Micrococcus spp. (6.11%), Lactobacillus spp. (5.16%) and Corynebacteria (0.95%). Gram- negative genera isolated were E. coli (15.6%). Klebsciella (12.86%) Enterbacter (7.48%), Citrobacter (4.53%), Pseudomonas spp. (2.53%), Proteus spp. (1.05%), Alcaligenes spp. (0.95%). Acinetobacter spp. (0.63%), and Branhamella spp. (0.63%). The aerobic bacterial plate count ranged between 67 x 104 organisms per millilitre to 54 x 104 organisms per millilitre
Aerobic Bacteria ; Bovine ;Milk;e Suda