Impact Factor : 0.548
Shimeles Abegaz* and Awole Mohammode
Received: March 01, 2018; Published: April 03, 2018
*Corresponding author: Shimeles Abegaz, School of Veterinary Medicine, Wollo University, Ethiopia, P.O. Box 1145, Dessie Amhara, Ethiopia
An abattoir survey based study was conducted between November 2011 and March 2012 period, to determine the prevalence and economic significance of hydatidosis in slaughtered ruminants. During the study, Debrezeit Elfora export abattoir were visited twice a week to examine the internal organs (livers, lungs, kidney and hearts) for the presence of hydatid cysts in ruminants and total 203 cattle, 384 sheep and 547 goats were examined for the presence of hydatid cyst. It was found that 42.86% of cattle, 7.03% of sheep and 4.39% of goats were infected with this disease. The cysts in cattle, sheep and goats (P < 0.05) were found mostly in lungs (41.4%, 7.03% and 4.39%) respectively, whereas the liver is second affected organ in all the three species of animals (p< 0.05%). In addition to this, six, two and one kidneys in cattle, sheep and goats respectively and one heart in cattle only were infected with hydatid cyst. In this study, the prevalence of hydatidosis and the number of cysts in ruminants were found different when the cattle, sheep and goats examined were stratified based on their age and body condition.
The prevalence and the number of cysts was high in those animals that has poor body condition and low in those animals having good body condition (P<0.05), but there is no significant difference (P>0.05%) between young and adult ruminants based on age. The economic loss in the value of the income due to carcass weight loss and because of the discarded organs (lung, liver, kidney and heart) annually as a result of hydatidosis was estimated to be 693,987.81 ETB for cattle, 600,465.2 ETB for sheep and 257, 790.19 ETB for goats. The minimum total loss for all infected animals was determined to be 1, 552, 243.2 ETB based on the market prices at Debrezeit in the year 2012.So that application of proper meat inspection was recommended to reduce such situations.
Keywords: Debrezeit; Economic Loss; Elfora; Hydatidosis; Prevalence; Ruminants
Ethiopia has the largest livestock population and the largest number of indig-enous cattle breeds in Africa, with an estimated number of large and small ruminant populations of 40.3 million cattle, 20.7 million sheep and 16.3 million goats (CSA, 2004). However, this great potential was not properly exploited mainly due to prevailing traditional management and rampant diseases distribution. Both endoparasite and ectoparasite infestation represents a major drawback on livestock production in the tropics Ogurinade and Adgegole . Hydatidosis (cystic echnococcusis) was one of the most important parasitic diseases of ruminants responsible for huge economic losses due to reduction in carcass weight gain and condemnation of Organs Hubber et al. . Hydatidosis is a zoonotic parasitic disease caused by larval stages (hydatid cysts) of cestodes belonging to the genus Echinococcus and the family Taeniidae Thompson and McManus . Hydatid cyst, which is the larval stage of Echinococcus, is a bladder like cyst formed in various organs and tissues following the growth of the oncospheres of an Echninoccus tape worm in that specific organ or tissue Martinma .
The larval stage develops in a very wide range of intermediate host including man and the adult stage is found in carnivores Urqhart et al. . Echinococcosis /Hydatidosis/ is endemic in sheep and cattle raising areas worldwide. Especially E. grnulosus has a worldwide geographical distribution and occurs in all countries.High prevalence is found in parts of Eurasia, Africa, Australia and South America. E. multilocularis is also distributed in the Northern hemisphere, including endemic regions in Central Europe, most of Northern and Central Eurasia, parts of North America and in Northern Africa (Tunisia) Eckert et al. [6,7]. The life cycle of hydatidosis involves two mammalian hosts. The adult cestode inhibits the small intestine of carnivores (definitive host) and produces eggs containing infective oncosphers. Cestodes segments, proglotids containing eggs (free eggs) released from the intestinal tract of final host in to the environment.
After ingestion of eggs by food animals (intermediate host) such as cattle, sheep, goats, swine and camel, the larval stage (metacestod), develops in the visceral organs typically the matured metacestod produces numerous protoscolices, each having the potential to develop into an adult cestode after being ingested by the carnivore definitive host. Accidentally, ingestion of the eggs Thompson and Mc Manus  infects humans and other aberrant hosts. In human beings hydatidossis is also found worldwide and cause serious public health problems especially E.granulosus is more common and E. mutilocularis is the most virulent Permin and Hansen . From several regions of the world there are alarming indications of increasing human health risks caused by echinococcosis Eckert et al. . There were yet no simple and satisfactory techniques available for ante-mortem diagnosis of echinococcosis in domestic or wild animals such as immunodiagnostic. Hydatidosis in food animals is detected by post-mortem examination and inspection of visceral organs such as liver, lungs, and kidneys.
The epidemiology and control of hydatidosis is often considered to be a veterinary matter since the disease can be regulated by controlling parasites in animals. However, collaboration between veterinarians and public health workers is essential for the successful control of hydotidosis Permin and Hansen . In Ethiopia, the status of hydatidosis in animals is not well documented and explored. The absence of proper meat inspection procedure, the presence of large population of stray dogs, lack of proper legislation on the control and unhygienic environment contribute significantly to the high prevalence of the disease in Ethiopia, therefore, the objective of the study is
a. To determine the current prevalence of hydatidosis in cattle, sheep and goats slaughtered at Debrezeit, Elfora export abattoir.
b. To assess the direct and indirect economic loss of the country associated with hydatidosis.
The study was conducted at Elfora export abattoir, Debre Zeit from November 2011 to March 2012. The abattoir is a privately owned export abattoir exporting beef, mutton, and goat meat and edible organs like liver, kidneys and brain of sheep and goats to Middle East countries. The study area is found in peri-urban area of Debere-Zeit, Ada'a liben woreda located at about1.5km from the main road to the way to Addis Ababa. Geographically, the area is found the escapement of Great Rift Valley marked by a number of crater lakes situated at 8044'N latitude and38058'E longitude at an altitude of 1850m above sea level. The mean annual rainfall of the area is 885.4mm.
The 84% of the annual rainfall distribution falls down during the long rainy season from June to September and the short rainy season lasts from March to May. The mean annual minimum and maximum temperatures are 14c0and26.30c0 respectively, with mean relative humidity of 61.3% CSA , NMSA . Farmers in the vicinity of Debere-Zeit town use a mixed farming, crop and animal production and its surroundings have variable and yet representative agro-ecologies of the country. These agro-climatic zones are inhibited with variety of plant and animal species Abera .
The study animals comprise cattle, sheep and goats brought from different parts of the country, mainly in Borana, Arbaminchi, Arsi, Bale and Somali. The origins of slaughtered animals are from different parts of the country and livestock marketing areas like Jinka, Borana and Arbaminchi. Jinka is the central administrative town of south Omo zone and it is found in one of the livestock mixed with crop production districts. Arbaminch is found in Southern nations, nationalities and peoples region. Most of the people in the area are engaged in agriculture both in the highlands and lowlands, ruminants (cattle, sheep and goats) provide milk and meat for human consumption and cash from selling them. The available grazing lands in relation to the animal's population various from place to place in the area, in the highlands there is a small grazing land per head of animal than in the lowland. In the highland farmers use their land both for animal grazing and crop production. The farming system in the area is crop-livestock production system.
The sample size was determined according to the method described by Thrush field (1995) considering 95% confidence interval at a desired accuracy level of 5% and with expected prevalence of 50%.
N= 1.962 Pesp (1-pesp )/d2
Where, N = sample size
Pexp = expected prevalence
D=desired absolute precision
Pexp =50% and D=0.05 then N=384, in order to increase the accuracy of the test, the sample size was increased to 1134. Therefore, the total sample size studied during the study was 1134 ruminants (203 cattle, 384 sheep and 547 goats) and animals were selected using random sampling method.
Cross-sectional study has been conducted at Elfora export abattoir, Debrezeit. In this cross-sectional study cattle, sheep and goats were participated, and clustered into two age groups that are young and adult, based on Steel  and Gatenby , those that have erupted more than one pair incisor teeth were classified as adult and otherwise young.
Cross-sectional abattoir survey was conducted to estimate the prevalence of Hydatidosis in cattle, sheep and goats at Elfora export abattoir, through meat inspection and ante mortem examination (n= 1134).'
Ante mortem Examination: During ante-mortem examination, each study animals were given an identification number, age, sex, and origin of animals was recorded; however all the slaughtered animals were males. The age grouping was based on dentition, for those which have not erupted permanent incisor teeth, are classified as young, while those with pair or more permanent incisor teeth erupted were classified as adult Alemu and Merkel . The association of body condition scoring and hydatid cyst count was analyzed. Body condition scores of animals were classified in to three as poor (score 1, 2, 3), medium (score 4, 5, 6) and good (score 7, 8, 9) Nicholson and Butterworth  after some modification.
Postmortem Examination: The inspection procedures used during the post mortem examination consisted of primary and secondary examinations. The primary examination involved visual inspection and palpation of organs and viscera. The secondary examination involved further incisions in to each organ if a single or more cysts found. Lungs, liver, kidney and heart of each animal were examined grossly. Each organ was also incised once or twice with knife. Whenever and wherever cysts were present, they were removed, put in to polythene bags separately, labeled and then taken to the laboratory for further studies.
Cyst Characterization: Individual cyst was grossly examined for any evidence of degeneration and calcification. Cysts size measurement, cyst counting, cyst fertility and viability determination was also conducted. The size of the diameter of hydatid cyst was measured and classified as large (diameter >10cm), medium (5 to 10cm) and small (diameter < 5cm) Oostburg et al. , Kebede et al. . The collected cysts were carefully incised and examined for protoscolices, which looks like white dots on the germinal epithelium, in hydatid fluid so as to classify cysts as fertile or infertile Kebede et al. . Fertile cysts were further subjected to viability test. A segment containing protoscolices was placed on the microscope glass slide and covers with cover slip and observed for amoeboid like peristaltic movement with (40x) objective. For clear vision, a drop of 0.1% aqueous eosin solution was added to equal volume of protoscolices in hydatid fluid on microscope slide with the principle that viable protoscolices should completely or partially exclude the dye while the dead ones take it up Dalimi et al. .
Economic Loss Assessment: The economic loss due to hydatidosis in cattle, sheep and goats slaughtered at Elfora export abattoir in Debre zeit town local market was estimated by considering of condemned visceral organs due to hydatid cyst. By taking into account the average number of ruminants slaughtered and the degree of organ condemnation per annum at Debrezeit, the direct economic loss attributed to hydatidosis was made using the formula indicated by Orgunrinade et al. .
ACLLHKC=(CSR*PL1C*L1C) + (CSR*PL2C*L2C) + (CSR*PHC*HC) + (CSR*PKC*KC)
Where, ACLLHKC= Annual cost of liver, lung, heart, and kidney condemned
a) CSR=Average number of cattle slaughtered per year at the abattoir
b) PL1=Percentage of liver condemned
c) L1C=Mean cost of one liver in Debrezeit town
d) PL2C= Percentage of lung condemned
e) L2C= Mean cost of one lung in Debrezeit town
f) PHC= Percentage of heart condemned
g) HC= Mean cost of one heart in Debrezeit town
h) PKC= Percentage of kidney condemned
i) KC= Mean cost of one kidney in Debrezeit town
The indirect economic loss from carcass weight reduction due to hydatidosis in cattle, sheep and goats were also assessed according to the equation polydorous . The annual cost of carcass weight loss due to hydatidosis (ACC) is estimated by the product of the total number cattle, sheep and goats slaughtered annually (Ns) at Debrezeit Elfora meat factory, the overall prevalence hydatidosis in each species (OP), the carcass weight loss in individual animals due to hydatidosis (CWL) at this abattoir and the average market price of 1kg carcass cattle, sheep and goats carcass (AMP) in Debrezeit town and this is represented as
ACC = Nsx OPx CWLx AMP
Therefore, the economic loss from both direct and indirect losses equals the sum of the two. i.e. ACLLHKC +ACC
Data that were generated from post mortem inspection was recorded in the Micro Soft Excel spread sheet 2007 program. Descriptive statistics such as percentage was calculated and prevalence of hydatidosis was defined as the proportion of condemned organs to the total number of organs inspected. The variation between the condemnation rates of lungs, livers, heart and kidney of cattle, sheep and goats of different age groups, body condition and origin was evaluated by Pearson's chi square (X2) test and differences were regarded statistically significant if p - value is less than 0.05.
In current study a total of 1134 ruminants consisting of 203 cattle, 384 sheep and 547 goats were examined for the prevalence of hydatid cyst infection. Out of these total examined animals 87 (42.86%), 27 (7.03%) and 24 (4.39%) cattle, sheep and goats, respectively were found infected with hydatid cyst (Table 1). Out of 203 examined cattle 84 (41.4%), 70 (34.5), 6 (3%) and 5 (2.5) lung, liver, kidney and heart, respectively were found infected with hydatid cyst. On the other hand, out of 384 examined sheep 24 (3.3%) lung, 19 (2.6%) liver, 2 (0.2%) kidney and 0 (0%) heart were found infected with hydatid cyst, out of 547 examined goats 18 (6.3%), 14 (4.9%), 1(0.5%) and 0(0%) lung, liver, kidney and heart were found infected respectively (Table 2).
Table 1: The overall prevalence of hydatidosis in cattle, sheep and goats slaughtered at Debrezeit Elfora Export abattoir.
Table 2: The distribution of hydatid cyst in different organs in cattle, sheep and goats slaughtered at Debrezeit Elfora Export abattoir.
This showed that there is a significant association (P<0.05) between species of animals and the prevalence of hydatidosis. A total of 126 lungs, 103 livers, 9 kidneys and 5 hearts were found positive for hydatid cyst infection in slaughtered ruminants at the abattoir in general. In this study the prevalence of hydatidosis in lungs, liver, kidney and heart of young and adult ruminants slaughtered at Debrezeit Elfora export abattoir were 23.8, 20.4, 11.1, 20 .0 and 76.2, 79.6, 88.9, 80 respectively which is not significant (P>0.05) (Table 3). Furthermore, a prevalence of hydatidosis in organs of slaughtered ruminants were also determined by considering body condition as a potential risk factor and this has a high significant difference (P<0.05) (Table 4).
Table 3: Prevalence of hydatidosis in relation to age as a potential risk factor in organs of ruminants slaughtered at Debrezeit Elfora Export abattoir.
a. Age*lung, x2=0.23a, DF=1, p=0.631 Age *kidney, x2=0.640a, DF=1, p=0.424
b. Age *liver, x2=0.200a, DF=1, p=0.654 Age *heart, x2=0.013a, DF=1, p=0.908
Table 4: prevalence of hydatidosis in relation to body condition as the potential risk factor in the organs of ruminants slaughtered at Debrezeit Elfora Export abattoir.
a. Body condition *lung, x2=103.608a, DF=2, p=0.000
b. Body condition *liver x2=157.926a, DF=2, p=0.000
c. Body condition *kidney x2=10.704a, DF=2, p=0.005
d. Body condition *heart' x2=20.90a, DF=2, p=0.000
Out of the total of 982 cysts recorded in the organs of slaughtered cattle 390(39.7%) small, 134(34.0%) medium and 159(15.9%) large cysts were found. On the other hand, out of 82 total cysts recorded in sheep 31(37.8%) small, 35(42.7%) medium and 16(19.5%) large cysts were found, whereas of 81cysts recorded in goats23 (28.4%) small, 19 (23.5%) medium and 16(19.6%) large were found. The highest numbers of the cyst were recorded in the lungs of cattle 558 and have 56.8% average of occurrence in this organ. In this study a total of 1145 cysts were found from the slaughtered ruminant organs; 657(57.38%) lung, 467(40.78%) liver, 13(1.14%) kidneys, and 8(0.070%) hearts of slaughtered ruminants in general. The cyst were collected from different infected organs and subjected to fertility and viability test. From the total cysts examined 696(60.79%) were fertile, 263(22.97%) were sterile and 194(16.94%) were calcified. Out of 696 fertile cysts in slaughtered ruminants 531(76.29%) were viable and 165(23.71%) were non-viable (Table 5).
Table 5: Cyst size and count in relation to involved organs in infected ruminants slaughtered at Debrezeit Elfora Export Abattoir.
In this study the direct economic loss due to infection by hydatid cysts in cattle, sheep and goats were estimated. The direct economic loss refers to losses due to condemnation of visceral organs infected with hydatid cyst infection. The current study refers that the lungs and the livers are the two most common organs usually condemned by hydatid cyst infection, Even though the kidneys and hearts were also involved. The average annual number of slaughtered cattle, sheep and goats at Debrezeit Elfora export abattoir was 3961, 445117, and 449592 respectively and the average number of annually condemned organs which includes lungs, livers, kidneys and hearts due to hydatidosis were 1143, 02, 51, and 6 for cattle; 1016, 894, 10 and 2 for sheep and 2298, 2260, 8 and 2 for goats respectively (Table 6).
Table 6: Condition of hydatid cyst in different organs of infected ruminants slaughtered at Debrezeit Elfora export abattoir.
In this study, the annual direct economic loss due to cost of condemned organs infected by hydatid cyst in cattle was obtained by computation of average annually slaughtered cattle (3961) by the percentile of condemned organs of lungs (28.86%), liver (22.77%), kidney (1.29%) and heart (0.15%) which is 71570.71ETB.Computed direct economic losses from condemned organs of cattle, sheep and goats were estimated totally be 119591.3 ETB. This was calculated from the current mean retailer market price of cattle lung (17ETB), liver (57ETB), kidney (12.5ETB) and heart (15ETB) and sheep and goat lung (5), liver (10), kidney (2.5) and heart (2.75ETB) in Debrezeit town. Indirect economic loss due to hydatidosis affects carcass weight gain of cattle by 5% loss, for sheep and goats by 2.5% loss Polydorous . In the current study carcass weight loss due to hydatid cyst was estimated by using average annual number of slaughtered cattle (3961), average carcass weight loss (135kg), over all prevalence of hydatidosis in cattle (42.86%), 5% weight loss and the current price of 1kg beef in Debre zeit town.
As a result, economic loss of 622417.1ETB per annual was estimated. By using the same procedure, average annual of slaughtered sheep (445117), over all prevalence of hydatidosis in sheep (7.03%), average carcass weight (13.5kg), 2.5% weight loss and the current value of 1kg chevon (56ETB) economic loss was incurred in through carcass yield loss in both of sheep and goats was calculated to be ETB 815133.19. Therefore, the total estimated direct and indirect economic loss of cattle, sheep and goats slaughtered at Debre zeit Elfora Export abattoir due to hydatidosis was estimated to be the sum of the direct and indirect loss from cattle, sheep and goats, which is 1552243.2ETB per year (Table 7 & 8).
Table 7: Number of slaughtered ruminant and organs condemned at Debrezeit Elfora export abattoir.
Source: Meat inspection record during the survey period of Debrezeit Elfora export abattoir (2011- 2012).
Table 8: Computed economic loss.
Source: Meat inspection record during the survey period of Debrezeit Elfora export abattoir (2011- 2012)
The study revealed that hydatidosis was highly prevalent in cattle and slightly prevalent in sheep and goats slaughtered at Debrezeit Elfora Export Abattoir. The high occurrence of infection in the intermediate host, suggests the presence of environmental contamination with the eggs of the adult tape worm Echinococcus granulosus. The prevalence of 42.86%, 7.03% and 4.39% of hydatidosis in cattle, sheep and goats respectively, obtained from this study are relatively lower than the findings of certain works in different regions of Ethiopia, such as 54.8% and 21.8% cattle and sheep respectively in Arsi region Alemayehu , 72.44% in cattle in Assela Fekadu , 46.5% in cattle in Debrezeit Jobre et al.  and 45.25 %, 25.5% and 17.4% of hydatidosis in cattle, sheep and goats respectively in Adama Habtamu . However, the prevalence of hydatidosis in cattle was in agreement with the findings from Wondogenet 42.8%, Getahun  and relatively higher than that of the findings from Nekemte 36.07%, Bersisa , 38.8% findings from Dessie Yilkal , 23.3% and 23.7% from Gonder and South Omo respectively Jobre et al. .
This variation in prevalence rate could be due to the difference in sample size, selection of the study animals, the origin of the animals brought for slaughter and the strain difference of Echinococcus granulosus were shown to have difference in their geographical distribution Angus . In addition other factors such as difference in socio-cultural structures and the degree of close association among the society, livestock and dogs are important factor that have been responsible for high prevalence of hydatidosis elsewhere Macpherson . Generally, the density, infectivity and availability of the eggs in the environment, the feeding behavior of the intermediate host, together with the external environment have a vital role in determining the dynamics of transmission of parasite FAO . In general, in present study, the liver and lugs are the most commonly affected organs in cattle sheep and goats.
This is in fundamental agreement with literature, which states that hydatid cysts are most commonly found in the liver and lungs of ungulates Soulsby , Urquhart et al. , Yilma Jobre et al. , Getaw et al. , [33,34]. This could be justified by the fact that lungs and liver posses the first greater capillary fields which acts as partial barriers for the ingested oncosphere, Which adopt the portal vein route and primarily negotiates the hepatic and the Pulmonary filtering action sequentially before any other peripheral organ is invaded Matosain . In this work percent involvement of the lungs is higher than the liver in all the three species; cattle, sheep and goats. Literature reveals that in older cattle and sheep, the liver sinusoids permits the embryos to traverse the sinusoids and reach the lungs. It is also possible for embryos to enter the hepatic circulation and be carried, via the thoracic duct and heart, to the lungs so that lungs will be infected before or instead of the liver Gracy .
The kidneys and hearts are the least affected organs. Similar findings were also obtained by various workers and it is indicated that liver and lungs are the most commonly affected organs with hydatid cyst due to the reason that they are the first capillary fields encountered by the blood borne oncospheres of the parasite Angus . However, development of hydatid cyst occurs occasionally in other organs and tissues when the oncosphere escape in systemic circulation Urquhart et al. . Higher number of large and medium sized cyst were found in lung than in liver and more number of calcified cyst were found in the liver than of the lung. This observati Habtamu [24,37] who confirmed that larger size of cyst in the lungs was due to its relative softer consistency Smith . In very yielding tissues of peritoneal cavity where the growth of the hydatid cysts were almost unrestricted, it may grow to an immense size with several liters of fluids bearing daughter cysts, brood capsule and hydatid sands Soulsby .
The higher percentage of calcified cyst in the liver could be attributed to a higher reticulo endothelial and connective tissue reaction of organs. It is not unlikely that larger number of embryos is killed in these organs, the site of destruction and lesion usually healed by fibrosis and calcification Smith . Relatively higher percentage of fertile cyst (60.79%) in cattle was obtained than the percentage of sterile (22.97%). In Britain up to 90% of the total cysts of cattle may be sterile although in some countries like South Africa (96.9%), Belgium (94.2%), and Rhodesia (86.5%) uncalcified cysts were fertile. The variation in fertility could be accounted to the strain difference of Echinococcus Arene [39,40]. The fertility rate was higher among the cyst of lung than the liver in all the three species of animals. This is an agreement with the result of other workers and it has been stated that the relatively softer consistency of the lung allows easier development of the lung pressure cysts and fertility of hydatid cysts may show a tendency to increase with advancing age of the host Hubbert et al. , Himonas , this may be related with reduced immunological capability of the host at higher old age of infection.
The fertility rate among the four organs examined in slaughtered domestic ruminants are variable, it was higher for lung and liver (38.08% and 13.45%), respectively than for kidney and heart (0% and 0 %), respectively. In this study, the fertility rate of uncalcified hydatid cyst in the lung (38.08%) is higher when compared to liver (13.5%) and there is significant difference (P<0.05) among the organs. Similar results are recorded by other workers Fikre  and Habtamu . This variation in fertility rate among the different organs of animal species is probably due to difference in strains Echinococcus granulosus Soulsby . The higher fertility rate of hydatid cyst in lungs and livers show that the slaughtered ruminants are the most intermediate host for the maintenance of the life cycle of the parasite, which further facilitated by the fact that sheep and goats are slaughtered at homes and back yard, as a result of which veterinary meat inspection is particularly impossible.
Moreover, it have been indicated that ovine strain of Echinococcus granulosus imposes a tremendous effect on health hazard in respect to human population and the presence of fertile cyst on cattle of apparent ovine strain may constitute an additional public health problem Moidrige . In this study hydatidosis was found incur financial loss that is estimated to be 1552243.2 ETB to cattle, sheep and goats industry per year. Previous workers have also estimated the annual financial losses associated with hydatidosis from other parts of the country. For example; Yilma reported financial loss about 813,526.46 ETB from Debrezeit abattoir; Moges reported financial loss of 131,190.45ETB from Jimma, While Bersisa  and Getaw et al. [32, 44-46] reported financial loss of 77, 587.02 ETB and 5869.80USD attributable to bovine hydatidosis from Nekemte and Gonder abattoir respectively [47-50]. The figure obtained in this study varies from the others which may be due to number of animals slaughtered and variation in the retail market price of the affected organs.
The aim of the present study was to determine the prevalence and the economic significance of hydatidosis in slaughtered ruminants at Debrezeit Elfora export abattoir [51-56]. Hydatidosis is the highly prevalent parasitic disease found in ruminant intermediate host including cattle (42.86%), sheep (7.03%) and goats (4.39%) slaughtered at Debrezeit Elfora export abattoir, Ethiopia [57-59]. This disease causes a significant economic loss directly by causing organ condemnation and indirectly by carcass weight loss gain which estimated totally be 1552243.2ETB [60,61]. Improper disposal of carcass (organ), increased population of stray dogs, lack of proper meat inspection and lack of appropriate legislations for the control of the disease are the most important factors that increase the transmission of the disease. Based on the above conclusive points the following recommendations are forwarded:
a. Regular deworming of pet dogs and control of stray dogs,
b. Meat should be properly inspected by sufficient number of inspectors at the abattoir,
c. Public awareness creation about the transmission and control of the disease and its public health significance,
d. Proper disposal of carcass either by burning or burring and avoiding the habit of giving offal to dogs,
e. Collaboration between veterinarians and public health workers in the prevention and control of the disease is mandatory,
f. Proper food hygiene, and personal hygiene especially, those having close contact with pets.