الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The quality of both flesh and surfaces of a sum 117 freshly dressed animals՚carcasses at Mansoura old-fashioned abattoir – consisted of 50 cattle, 27 buffaloes and 40 sheep carcasses – were evaluated sensorily, chemically and microbiologically. Sensory evaluation of bleeding efficacy was done at a routine postmortem inspection and revealed only16 (13.7%) of 117 surveyed carcasses were well – bled, 88 (75.2%) moderate – bled, besides 13 (11.1%) ill – bled carcasses. Detailed evaluation of the meat quality of cattle, buffaloes and sheep carcasses – according to their pHu levels – showed 3 grades, distributed as grade I ” good quality meat ” represented by 26 ( 22.2%) whole flesh samples possessed pHu range ≤ 5.5 − < 5.8 consisted of 12 ( 24%) beef, 12 ( 44.5%) buffaloes՚meat and 2 ( 5%) mutton samples, whereas grade II ” moderate dark, firm and dry meat (mDFD) ” had pHu range 5.8 − < 6.2 were 71 ( 60.7%) total flesh samples – nearly 3 times more than those of good quality ones – comprised 27 (54%) beef, 15 ( 55.5%) buffaloes՚meat and 29 ( 72.5%) mutton samples, in addition to grade III ” dark, firm and dry meat (DFD) ” owned pHu range 6.2 − ≥ 6.7 were a sum of 20 ( 17.1%) flesh samples – lower than those of good quality ones – composed of 11 ( 22% ) beef, 9 ( 22.5% ) mutton samples. Buffaloes՚meat were not involved in DFD grade. An overviewing the final evaluation of meat quality of the whole tested 117 flesh samples – according to their pHu levels – only 26 ( 22.2% ) of them were satisfactory, while the remaining 91 (77.8%) samples were unsatisfactory. Microbiological evaluation of the carcasses was only confined to their surfaces (3 sites each) and comprised the estimation of the populations intensities of most common microbes (Aerobic plate counts = APCs, Enterobacteriaceae, moulds and yeasts) contamining them. APCs were estimated as mean ± SE levels and ranges (minima – maxima) (log10 cfu /cm2) on cattle, buffaloes and sheep carcasses as 7.43 ± 0.96 (5.38 – 8.29), 7.69 ± 1.37 (5.34 – 8.42) and 7.37± 1.06 (5.56 – 8.28) on topsides; 7.57 ± 0.98 (5.23 – 8.47), 7.70 ± 1.35 (5.36 – 8.25) and 7.50 ± 1.09 (5.90 – 8.37) on shoulders besides 7.73 ± 0.96 (5.28 – 8.33), 7.60 ± 1.33 (5.23 – 8.17) and 7.57± 1.10 (6.25 – 8.46) on necks surfaces, respectively. Plates of Violet Red Bile Glucose Agar revealed that the intensities of Enterobacteriaceae organisms onto cattle, buffaloes and sheep carcasses by mean ± SE levels and their ranges (minima – maxima) (log10 cfu /cm2) 2.99 ± 0.30 (2.07 – 3.98), 2.99 ± 0.38 (2.20 – 3.42) and 3.11 ± 0.36 (2.32 – 3.83) on topsides; 3.06 ± 0.32 (2.17 – 3.85), 3.05 ± 0.40 (2.45 – 3.46) and 3.13 ± 0.36 (2.34 – 3.83) on shoulders besides 3.01 ± 0.28 (2.20 – 3.59), 2.94 ± 0.39 (2.32 – 3.40) and 3.06 ± 0.34 (2.08 – 3.75) on necks surfaces, consecutively. Plates of Dichloran Rose Bengal Chloramphenicol agar showed the mean ± SE levels (log10 cfu /cm2) every of moulds and yeasts onto cattle carcasses surfaces as 1.52 ± 0.11 and 1.81 ± 0.13 on topsides, 1.36 ± 0.08 and 1.62 ± 0.11 on shoulders plus 1.54 ± 0.11and 1.69 ± 0.12 on necks surfaces, respectively. Meanwhile, these values onto buffaloes carcasses surfaces were 1.63 ± 0.18 and 1.64 ± 0.17 on topsides, 1.71 ± 0.21 and 1.67 ± 0.18 on shoulders besides 1.96 ± 0.26 and 1.70 ± 0.16 on necks surfaces, successively, whereas, analogous levels onto sheep carcasses surfaces were 1.76 ± 0.15 and 1.79 ± 0.16 on topsides, 1.79 ± 0.17 and 1.81 ± 0.17 on shoulders alongside 1.97 ± 0.20 and 1.92 ± 0.18 on necks surfaces, consecutively.