The Prevalence Of Hydatidosis By Sex, Season And Location In Slaughtered Buffaloes At The Tabriz Abattoir In 2006-2007
M Khanmohammadi, S Gayem Maghami, M Zakaria Zadeh
abattoir, buffalo, hydatid cyst, hydatidosis, infection
M Khanmohammadi, S Gayem Maghami, M Zakaria Zadeh. The Prevalence Of Hydatidosis By Sex, Season And Location In Slaughtered Buffaloes At The Tabriz Abattoir In 2006-2007. The Internet Journal of Veterinary Medicine. 2007 Volume 4 Number 2.
This study was made to investigate the level of infected buffaloes with hydatid cysts at Tabriz abattoir between 2006 to 2007. Totally, 856 heads of buffalos (156 males and 702 females) were studied. In order to do so, the infected buffalos were examined by visiting and palpation. Along with that, the infected organs including lung and liver were investigated by some parallel cuttings. The amount of infection to hydatid cyst were reported to be 30%, 27%, 25.73% and 26.4% in spring, summer, fall and winter, respectively. The level and place of cysts in different organs were investigated which in left lung was about 78% and in right lung about 1.07%.According to this study, there is a significant difference (p<0.05) regarding the percentage of cyst presence in different organs.
Hydatidosis, which is one of Zoonoses and dangerous diseases, usually infects men and herbivorous mammalian. This disease is reported from different parts of the world and a number of studies were made on that because of hygienic and commercial reasons. The final host of this infection is jackals, foxes (red fox's), hyenas, wolfs and dogs. The intermediate host of this disease is mainly herbivorous animals; however, it has been seen in mammalian such as monkeys, marsupials and rodent mammals. In Eslami and Mohebali's study (1998) of Tehran's vagrant and shepherd dogs the amount of infection was reported to be 29% and 33.3%.The amount of infection in Shiraz and Isfahan's Vagrant dogs Was 28.8% (Gorayshi, 1978) and 50.5%(Hoghoghi, 1998) respectively. Daryani (2006) reported that the amount of infection among slaughtered buffalo in Ardabil abattoir was 9.3% in males and 16.3% in females. Khalili (1982) reported that the amount of infection among buffalos at Ahvaz abattoir to be 57.76% .In an another study, saki (1994) reported that the amount of infection among males was 21.47% and among females was 25.79% at Ahvaz abattoir. Mandel and
Materials And Methods
In this study, 854 heads of buffalos (152 males and 702 females) at Tabriz abattoir in 2006-2007 were investigated. All of the information including age, date of slaughter, the number of slaughtered animals, sex, season of slaughtering and the place of husbandry was collected from a ready made form. The method was as follows: First, seeing the infected organ and palpation and making some parallel cuttings, we examined the infected organs. This was done mainly on lungs and livers. In buffalo, infection in spleen had been reported (saki, 2000). After recognizing the infection; the number of infected cysts were counted and recorded.
In Table 1, the frequency, sex of slaughtered buffalo and infected organs were shown. From 854 slaughtered buffaloes, there were 152 males and 702 females. According to the obtained information, there were 220 heads of cyst infection including 34 males (23.36%) and 186 females (26.49%).The numbers of infected livers were generally 141 from which 17 cases (11.18%) were related to male livers and 124 cases (17.66%) were related to female livers. The number of infected livers coupled with infected lungs were 75 from there were 11 cases (7.23%) in males and 64 cases (9.11%) in females.The Table 2 shows the frequency of Hydatid cysts seen in different organs. From 220 heads of infected buffalos, 663 cysts were removed, 101 from males and 562 from females. The number of removed cysts which were seen in livers, lungs, kidneys were 158(33.83%), 466 (70.28%) and 17 (2.56%), respectively. Table 5 shows the frequency of hydatid cysts in buffalos in which maximum number of infection were in spring (30%) and the minimum number of infection were in winter (24.51%).
In this study on 854 heads of buffaloes at Tabriz abattoir it was recognized that the amount of infection in slaughtered uffalos were about 25.84% which was less than that of the studies of Islam (1982) in Bangladesh, Prasad (1969) in Pakistan, Mandel and
We hereby thank Dr. Ali eslami, Dr. Nasser hoghoghi Rad, Dr. Sadegh. rahbari and Dr. Mohammad zakaria zadeh and President of Islamic Azad university of Marand's research department for their helps on this study.
M.Khanmohammadi, Department of zoology, Faculty of biology sciences Islamic Azad university, Marand Branch, Marand, Iran.