الفهرس 
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Abstract
Our study aimed to study the effects of different livestock diseases (cattle, calves and sheep), poultry (broiler) and fish diseases on the national income of Egypt.
This study was carried-out by
Obtained data from FAO, statistics yearbook information about the animal production (Dairy, beef, calf, poultry, sheep and fish production). FAO, 2013 and Central agency for public mobilization and statistics. Year books. Journal. 2017 – 2019
The data obtained from health records belonging to farmers, private farms and governmental farms during the period extended from 2010 - 2019. The data collected according to the methods implied by (Beck et al., 1988; Mukhebi et al., 1992 and Kossaibati and Esslemont, 1997).
For each disease affecting cattle, calves and beef, sheep and fish economical and statistical analysis was carried-out.
This study concluded that:
A- Livestock Statistics of Egypt
1-The agricultural products
The value of agricultural products reached to 9,893,356 milliar dollars, the value of live animals 64,799, 000 dollar and the value of livestock products reached to 1,380,957 milliar dollars, the value of feed of animal origin reached to 121,159,000 dollars.
2-Population number in Egypt and poverty level. Projections:
The % of agriculture production from GDP reached to 12.04 % and the livestock production % from GDP reached to 4.81 %.
3-Demand changes on animal products and long term projections (Animal production during the period from 2010 to 2050):
There is a decrease in the future in animal production products to meet the decreasing of the demand of animal products.
B-Experimental Part:
4. Dairy Cattle:
The total costs due to cattle diseases ranged from 4388.66 LE for animals suffered from respiratory diseases to 12931.28 LE for animals suffering from mastitis. Also, the diseases of reproductive system diseases, urinary system diseases and metabolic disorders of a higher costs and its levels reached to 12351.53, 11550 and 11460 LE.
5. Calf and Beef Cattle diseases among different ages:
The higher costs of diseases observed in traumatic pericarditis as its costs reached to 7370 LE followed by tympany 5858 LE/head, emaciation 5606.8 LE, lameness 5388.92 LE, uremia and renal failure 5221.64 LE and liver diseases that its costs reached to 5198.48 LE.
6. Sheep Diseases:
The diseased costs showed a higher level in streptococcus pneumonia as its value reached to 3800 LE/head and in Pasteurella mulocida and klebsiella pneumonia as it reached to 3300 LE/ Head. The total losses of fascioliasis were 3250 LE, cholostridium 2770 LE/hed, mycoplasma 2950 LE/head and in staphylococcus epidermis reached to 3250 LE/head.
7. Poultry Diseases:
The higher level of economic losses of dead broilers observed in diseases of avian influenza 24461.20/LE /10000 broilers and the lower weight losses of dead broilers observed in salmonellosis infection as it reached to 5112.20/LE/ 10000 broilers. While, the losses of dead broilers observed in farms infected with Newcastle, gumboro and coccidiosis diseases reached to 13068.00, 15812.40, 6556 Kg/10000 marketed broilers, respectively.
The higher level of economic losses resulted from dead broilers observed during the years of 2015, 2013, 2012 as the economic losses level reached to 33739.20, 18526.20, 15213 LE/ 10000 broilers, respectively. The economic losses due to dead birds during these years were 2009, 2010, 2011, 2016 reached to 10857, 11484, 13094, 10395 LE. 10000 broilers, respectively. The lower economic losses level observed in years of 2008, 2017, 2018 and 2019 as the losses during these years were 6982.80, 7543.80, 6501, and 9596.50 LE/10000 marketed broilers, respectively.
8. Fish Diseases
The higher economic losses observed in in cycles infected with Motile Aeromonas septicemia + Trichodina, 180.60 LE, Motile Aeromonas septicemia 145.40 and aflatoxicosis 121.60. While, the lower mortality % observed in Motile Aeromonas septicemia + saprolegnia 61.20, costiasis 67.60 and Ichthyphonus 57.60. Meanwhile, the mortality % in cycles infected with Trichodina, and saprolegnia reached to 109.20 and 88 LE/100 fish, respectively.
These results agreed with those of (Saad et al., 2014) where they reported that, the main diseases causing economic losses in fish cultures includes Saprolegnia, Aeromonas, parasitic and the mycotoxins from the previous fish species respectively, and the cycles spread in it this diseases achieved the lower net income level which reached to 65.45 , 12.42, 35.51 and 16.20 LE/1000 fish respectively.
Also, Atallah and El-Banna (2005) and Aly (2013) concluded that, the most important diseases affecting fish under Egyptian conditions were Motile Aeromonas septicemia, Saprolegniasis infection, Aflatoxicosis, Icthyphonus infection, Trichodina and Costiasis infestations and the mixed infection between the Motile Aeromonas septicemia and Saprolegnia. These diseases reduced fish livability, feed consumption and its feed conversion, increasing costs of veterinary management and production costs. The production costs for the previous diseases were 106.53, 175.39, 151.92, 111.62, 167.96, 170.93 and 199.46 LE/100 fish. In the control fish farms the production costs were 168.34 LE/100 fish, while, the returns for the farms for the previous diseases were 201.54, 181.58, 191.37, 273.21, 187.36, 272.75 and 231 LE/100 fish and in the control fish farms it reached to 294.86 LE/100 fish and the net income were 95.01, 6.19, 39.45, 161.59, 19.4, 56.23 and 32.42 LE/100 fish. Moreover, in the control fish farms the net income was 126.52 LE/100 fish, with reduction of fish farm economic and productive efficiency.
Also, Aly (2013) observed severe mortalities and morbidities were seen among cultured Nile tilapia (Oreochromis niloticus) in several large freshwater fish farms in Egypt. Laboratory studies revealed the presence of Aeromonas hydrophila in 70% of fish examined.
C. Economic Losses of Livestock Diseases in Relation to Egyptian National Income:
1-Losses from the diseases among different animals
The average losses of animal diseases units reached to 8859.74 LE/ cow for dairy cattle, 4856.86 LE/ calve for beef cattle, 3171.28 LE/sheep for sheep production, and in broiler production it reached to 13000/10000 broiler of broiler production and in fish production reached to 102.80 LE/100 fish.
The % of mortality from different livestock diseases reached to 3 % for cattle, beef and calves, sheep, while, in broiler reached to 10 % and in fish the mortality rate reached to 15 %.
So, the number of dead animals reached to 146435.88, 123108.87, 1938950.70, 776424.139 and 164.700 units for cattle, beef, sheep, broiler and fish, respectively. The losses of dead animals (L.E) reached to 1297915407,87, 597922546,34, 614897407,37 and 10093513807 LE/ in Egypt for cattle, beef, sheep, broiler and fish, respectively. The losses of animal diseases in relation to Egyptian and production income reached to 1.06 %, 0.97 %, 28.14 %, 52 and 77.10 % for cattle, beef, sheep, broiler and fish, respectively.
2-Losses of Animal Diseases in Relation to Total Egyptian National Income:
Table (22) cleared that, the losses of livestock diseases constituted about 1815518032858 LE, the value of Egyptian National income by year 2020 reached to 5 X 1018 LE. The % of losses of animal diseases from total Egyptian national income reached to 3.64 X 10-7.