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Rofeida Mohammad AL-bajaly Nazar Jabbar AL-Khafaji

Abstract

The current study was conducted to examine 186 sample of raw milk and some dairy products to study the common pathogen of zoonotic importance agents, contaminated the raw milk, The results showed, that from 186 samples: 26 (13.98%) were free from bacteria, While from others samples 160 (86.02%), 288 isolates were isolated, either in a single form, 75 (40.3%) or mixed in two isolates in sample 47 (25.3%), or there 33 (17.7%), or four 5 (2.7%) in a sample. The highest numbers of isolates was Staph.58/288 (20.1%); Sal 39/288 (13.5%); Lact.35/288 (12.2%); E. coli 30/288 (10.4%); Pseud. 30/288 (10.4%); Kleb. 29/288 (10.1%); Ent. 24/288 (8.3%); Prot.17/288 (5.9%); Cit.17/288 (5.9%); Strept. 5/288 (1.7%); List 4/288 (1.4%). a total of 76 samples of raw milk from udder and bulk tank from cow, buffalo, sheep, and goat. 141 isolates were isolated: from which Salmonella spp. 27/141 (19.0%);Staphylococcus spp.24/141(16.8%); Lactobacillus spp. 21/141 (15.5%); Enterobacter spp. 17/141 (12.0%); E. coli spp. 15/141 (10.6%); Citrobacter spp. and Proteus spp., each 12/141 (8.5%); Klebsiella spp. 8/141 (5.6%) and Pseudomonas spp., 5/141( 3.5%). While from a total of 35 samples of milk products (Cheese and Yoghurt), 62 isolates were isolated, the highest isolate was Lactobacillus spp. 14/62 (22.6%); Salmonella spp. 12/62 (19.4%); E. coli 10/62 (16.1%); Staphylococcus spp. 7/62 (11.3%); Pseudomonas spp. 6/62 (9.7%); Proteus 5/62 (8.1%); Klebsiella spp. 4/62 (6.5%); Enterobacter spp. 3/62 (4.8%); and Citrobacter 1/62 (1.6%).). From a total of 76 samples of raw milk from udder and bulk tank from cow, buffalo, sheep, and goat. 142 isolates were isolated: from which Sal. sp. 27/142 (19.0%); Staph. sp. 24/142(16.8%); Lact. 22/142 (15.5%); Ent. sp. 17/142 (12.0%); E. coli 15/142 (10.6%); Cit. sp. and Prot. sp., each 12/142 (8.5%); Kleb.8/142 (5.6%) and Pseud. sp., 5/142( 3.5%). Microbiological analysis revealed that the mean aerobic plate count was in milk from cows as the counts were (140.43±26.67x106CFU/ml) (8.11± 0.08 log 10); followed by buffaloes (197.0±2.68 x105 CFU/ml) (7.29±0.006), then Cheese (143.0 ± 12.81 x 104 CFU/ml) (6.15±0.04); Yoghurt (179.67±15.17x104 CFU /ml) (6.25±0.04). It has been shown through these results that the presence of some zoonotic importance bacteria is evidence of the lack of health requirements and thermal treatments of raw milk and some of its products (local cheese and yogurt).

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