الفهرس 
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Abstract
Meat is an essential food fit for human consumption obtained after postmortem originating from the live animals after slaughters that are used as food by human. from the most important animals producing meat are sheep and goat , no doubt sheep and goat meat considered as one of the staple red meat in human diet, indeed goat meat is acceptable throughout the world but cultural and social tradition and economic condition often influence consumer preferences.
The present study was conducted for 12 month period between May 2009 and May 2010 to examined and inspect the internal organs ( liver, lung, spleen, hearts and omentum ) of total 1603 sheep and 115 goat carcases for presence of different parasitic cystes. The examination and inspection were done in some abattoirs of Alexandaria and Al-Boheira provinces. from each examined carcase 250 g were taken as ( 100 g from hind quarter, 100 g from fire quarter and 50 g from diaphragm ) and transferred with a minimum of delay to the laboratory to examined chemically and microbiolyically.
Ten gram of each samples were aseptically put into a sterile flask contained 90 ml of sterile peptone water (0.1%), homogenized for two minutes to produce a homogenate of 10-1 dilution, then from 1 first dilution 1ml was taken to another tubes and the decimel 10th fold serial dilution were done up to 10-6.
The samples examined for:
-Bacteriological examination:that includes, Total aerobic bacteria count , Total entrobacteriaceae count, Yeast and mould count.
-Chemical examination: That include, determination of pH and Chemical composition of meat (Determination of Protein percentage and fat percentage.
The most important results obtained are:
1-Incidence of sheep and goat carcasses infected with parasites:
The number of examined sheep were 1603 head from them 50 animal infected with parasites by average percentage of 3.11. Meanwhile, the number of goat examined about 115 head from them about 15 animals infected with parasites by average percentage 13.04 %.
2-Incidence of different parasitic diseases in examined infected sheep and goat carcasses:
The incidence of cysticercus in sheep higher than that of goat. The main organs in sheep infected with cysticercus were liver, lung, diaphragm and heart by about 54, 10, 14, and 6 % from the examined infected carcasses and the type of cysticercus is Cysticercus taenicollis . but in goat it found only in the liver by about 33.34. Meanwhile, the hydrated cyst found only in sheep by about 2 and 14 % in liver and lung and not observed in goat. While, the Cysticercus ovis observed in liver in goat by about 46.66 % from examined carcasses, also, the fasciola incidence observed only in liver of goat but not sheep by average percentage by 20 % and not observed in the examined sheep.
3-Chemical examination:-
The results presented revealed that, the mean values of pH in sheep and goat meat were 5.84 ± 0.01 and 5.76 ± 0.04 with minimum values of 5.71 and 5.55 and maximum values of 5.99 and 6.10 respectively. Also,
The mean values of protein percent in sheep and goat meat were 17.08 ± 0.09 and 17.79 ± 0.19 with minimum values of 18.80 and 16.40 and maximum values of 18.30 and 18.90 respectively.
The mean values of fat percent in sheep and goat meat were 3.29 ± 0.09 and 3.24 ± 0.17 with minimum values of 2.10 and 2.10 and maximum values of 4.40 and 4.20, respectively.
4.Microbiological evaluation:
The mean values of total aerobic bacterial count cfu/g in sheep and goat meat were 1.40 X 104 ± 1.64 X 103 and 2.00 X 104 ± 2.78 X 103 with, 6.1 X 103 as a minimum and 2.2 X 104 as a maximum and 1.5 X 104 as a minimum and 2.8 X 104 as a maximum, respectively
The total Eterobacteriaceae count in sheep and goat meat were ranged from 6.7 x 103 to 1.2 x 104 with an average of 8.66 x 103 + 1.82 x 103 and from 9.6 x 103 to 1.1 x 104, With an average of 1.00 x 104 + 0.71 x 103 cfu/g, respectively. Also there is a significant difference between the mean values of Enterobacteriaceae count cfu/g, of sheep and goat meat (P<0.05).
The total mould count in sheep and goat meat were ranged from 0.70 x 103 to 1.3 x 103 with an average of 1.05 x 103 + 0.06 x 103 and from 0.70 x 103 to 1.50 x 103 with an average of 1.05 x 103 +0.17 x 103 cfu /g respectively, the mean values of mould count cfu/g of sheep and goat were significantly different at P < 0.01.
Ranged from 1.00 x 103 to 1.70 x 103 with an average of 1.70 x 103 + 0.07 x 103 and from 1.00 x 103 to 1.60 x 103 with an average of 1.37 x 103 +0.13 x 103 cfu /g respectively.