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Two categories of duck and hen eggs (clean and dirty) were selected from wholesalers for this study from January- June, 2013. After collection and transportation to the laboratory bacteriological analysis was performed under two major principles of assessments. At first microbiological quality was evaluated and then Total viable count (TVC), Total coliform count (TCC) and Total Salmonella Count (TSC) were performed. A total of 40 egg (20 egg of hens and 20 eggs of duck) samples were subjected to assessment on microbiological quality. The TVC, TCC, TSC of clean (intact) eggs of the egg shell of duck were log 4.94, log 4.70 and log 4.75, respectively and in case of hen eggs values were log 4.73, log 4.50 and log 4.53, respectively. The mean value of TVC, TCC and TSC of dirty eggs of the egg shell of duck were log 5.42, log 4.87 and log 4.76, respectively and in hen eggs the values were log 5.25, log 4.83 and log 4.67, respectively. The highest significant correlation was found between TVC of clean hen and TSC of dirty hen eggs. The correlation among TVC, TCC and TSC of clean duck and dirty duck eggs ranged from 0.0174 to 0.8055. The highest significant correlation was found between TCC of clean duck and TSC of dirty duck eggs. The correlation among TVC, TCC and TSC of clean hen eggs ranged from 0.0224 to 0.6915. The TVC and TCC showed highly significantly correlation with TSC of clean hen eggs. The correlation among TVC, TCC and TSC of dirty hen eggs ranged from 0.3269 to 0.7837. The TVC and TCC were highly significantly correlated with TSC of dirty hen eggs. The correlation among TVC, TCC and TSC of clean duck eggs ranged from 0.0873 to 0.8390. The TCC showed highly significant correlation with TVC of clean duck eggs. The correlation among TVC, TCC and TSC of dirty duck eggs ranged from 0.3959 to 0.8597. The TVC and TCC showed highly significant correlation with TSC of dirty duck eggs. The highest bacterial load was found in dirty duck eggs and lowest score were found in clean hen eggs. The study indicated that hen eggs are safer than duck eggs. |
