Fifteen fecal samples from peacocks (Pavo cristatus) in Saudi Arabia contained oocysts of Eimeria riyadhae n. sp. in two peacocks and oocysts of E. arabica n. sp. in one peacock. Sporulated oocysts of Eimeria riyadhae are ellipsoidal, 27-30.5 x 20.5-25 (28.8 +/- 1.3 x 22.4 +/- 1.6) micron, with a two-layered wall and bilobed polar body, but without a micropyle or residuum. The sporocysts are ov...

In order to determine the involvement of nitric oxide in the pathogenesis of coccidiosis induced by Eimeria, 30 chickens were challenged with mixed sporulated oocysts of four species of Eimeria (E. acervulina, E. maxima, E. necatrix, and E. tenella) at 26 days of age. There was an increasing of oocyst shedding in the infected birds at 6, 10 and 14 days post-infection. Histopathological examinat...

A wild strain of Eimeria tenella was isolated and utilized for immunization studies. Its optimal sporulation was attained at room temperature 24-25 degrees C after 24-48 h. Two groups of chicks were immunized by dosing a graded dose of five oocysts/chick/day for 6 days followed by 50 oocysts/chick/day for 7 days. A third group was not immunized and served as a negative control. Immunized chicks...

The article presents the results of monitoring parasitic protozoa young turkeys in industrial-type farms Central region Russia. Fecal samples, scrapings from floor and passages, contents gastrointestinal tract during slaughter were systematically examined birds different ages. age seasonal dynamics their infection with eimeria, as well contamination environmental objects by protozoan oocysts, e...

The hypothesis tested was that exposure of broiler chickens to an electromagnetic field (EMF) may reduce the signs of coccidiosis infection, based on recent insights into immunology. The experiment had a 2 x 2 factorial design. An uninfected and an infected group did not receive further treatment, whereas the other uninfected and infected groups were subjected to EMF treatment. In the cages of ...

Coccidiosis caused by Eimeria species is a major form of intestinal infection affecting intensively and semi-intensively reared goats. The province of Alentejo is the main goat-producing area in Portugal. Therefore, all 15 Serpentina goat farms in Alentejo were analyzed regarding the occurrence and diversity of Eimeria species. Fecal samples obtained from 144 animals (52.1% dairy goats, 47.9% p...

Egress, which describes the mechanism that some intracellular parasites use to exit from parasitophorous vacuoles and host cells, plays a very important role in the parasite life cycle and is central to Eimeria propagation and pathogenesis. Despite the importance of egress in the intracellular parasite's life cycle, very little information is known on this process compared to other steps, e.g.,...

the prevalence of eimeria spp. infection and the intensity of fecal oocysts were determined in 250 sheep in malayer suburb of iran using flotation and sporulation techniques. the overall prevalence was 23.23% in which the young male sheep had the highest prevalence (37.61%) with the highest intensity (63.58%). there were no significant difference in the prevalence between male (27.9%) and femal...

hepatic coccidiosis is considered as a major problem in rabbits which mortality rate may go high as a result of unhygienic maintenance with overcrowding. this study was aimed to determine abundance and pathologic changes of hepatic coccidiosis in rabbits of northwestern iran. a total of 320 rabbits (110 new zealand, 110 angora, and 100 native) in different sex and age groups were randomly se...

forty-one wild sheep (ovis ammon orintalis) from kabodan island of national park of urmialake (north-west of iran), were examined during a period of six months from october 2002 tomarch 2003, for helminthes and coccidian infection. the numbers of oocyst and eggs per gram offaeces (opg & epg) were determined by the centrifuge flotation technique using saturated sugarsolution. the rate of inf...