| [the frequency of coccidial infection in dog families of different husbandry and breeds in south germany]. | oocysts and/or sporocysts were detected in 50 litters and 37 bitches of 100 coproscopically examined dog families in southern germany. oocysts of isospora spp. were excreted by 41 of the 50 positive litters, 36 and 16 litters shedding oocysts of isospora ohioensis/burrowsi and i. canis, respectively. sporocysts of sarcocystis spp. and oocysts of hammondia heydorni were detected in 12 and 7 litters, respectively. the excretion rates of the dams were arranged analogous to the detection of oocysts ... | 1990 | 2219110 |
| ultrastructure of sporozoites and zoites of hammondia heydorni. | the ultrastructure of sporozoites and zoites of hammondia heydorni was studied in cultured bovine cells. in addition to ultrastructural features typical of coccidian parasites, h. heydorni sporozoites and zoites contain rhoptries that are located posteriorly as well as anteriorly. also, sporozoites contain a posteriorly located crystalloid body (1.2 micron in diameter); a small crystalloid body (0.5 micron in diameter) was occasionally seen in the anterior end. zoites resulting from the 1st divi ... | 1989 | 2810143 |
| [incidence of coccidia in dogs in brno and the surrounding area]. | in the course of two years, 663 dogs from brno and its vicinity were subjected to clinical and parasitological examination with a special reference to the occurrence of coccidia. a saturated sugar solution with the specific weight of 1150 was used as the flotation medium. coccidia were found in 2.17% of the dogs examined. the oocysts of the groups isospora ohioensis, i. burowsi and i. neorivolta were identified most frequently (2.11% of the dogs). four dogs (0.60%), all alike, eliminated the ooc ... | 1984 | 6440344 |
| hammondia heydorni infection in camels (camelus dromedarius) and water buffaloes (bubalus bubalis) in egypt. | | 1983 | 6636986 |
| [parasitological fecal studies of equids, dogs, cats and hedgehogs during the years 1984-1991]. | the results of the coproscopical examinations in horses, dogs, cats and hedgehogs between 1984 and 1991 are presented. in 9192 samples from horses 55.5% stages of strongylids, 4.0% of parascaris equorum, 2.2% of anoplocephalids, 1.6% strongyloides westeri, 0.7% of oxyuris equi, 0.6% of eimeria leuckarti, 0.2% of fasciola hepatica and 0.04% of dictyocaulus arnfieldi were found. in 48.0% of the 46 samples from donkeys eggs from strongylids were detected, in 17.4% larvae from dictyocaulus arnfieldi ... | 1993 | 8261912 |
| pig, donkey and buffalo meat as a source of some coccidian parasites infecting dogs. | experimental infection of dogs with meat samples (oesophagus, heart and diaphragm) from each of 105 pigs, 11 donkeys and 17 egyptian water buffaloes indicated that they contained the infective stages of some coccidian parasites of dogs. the dogs which were fed pig meat shed in their faeces isospora ohioensis, i. canis oocysts and sarcocystis miescheriana sporocysts after prepatent periods of 3-5, 4-7 and 9-10 days, respectively. the dogs which were fed donkey meat excreted only i. ohioensis oocy ... | 1998 | 9760058 |
| a structural study of the neospora caninum oocyst. | oocysts of neospora caninum were collected from the faeces of a dog fed mouse brains containing tissue cysts of the nc-beef strain of n. caninum. sporulated oocysts were spherical to subspherical, and were 11.7x11.3 microm. the length/width ratio was 1.04. no micropyle or oocyst residuum was present. polar granules were not present, although occasionally tiny refractile granules were seen among sporocysts. sporocysts were ellipsoidal, did not contain a stieda body, and were 8.4x6.1 microm. the l ... | 1999 | 10608437 |
| characterization of neospora caninum surface protein ncsrs2 based on baculovirus expression system and its application for serodiagnosis of neospora infection. | the baculovirus expression system has proved to be a useful tool for the production of recombinant proteins. here we have characterized the neospora caninum surface protein ncsrs2 produced by two types of the recombinant virus and also have developed an enzyme-linked immunosorbent assay (elisa) using recombinant ncsrs2 for the serologic diagnosis of neospora infection. western blot analysis showed two major protein bands that were detectable in insect cells infected with each recombinant baculov ... | 2001 | 11682519 |
| cyclic transmission of neospora caninum: serological findings in dogs shedding oocysts. | in a previous paper we demonstrated that hammondia heydorni-like oocysts isolated in 1996 from a naturally infected dog could not be distinguished from the isolate neospora caninum nc-1. the isolate, designated as h. heydorni-berlin-1996, was cyclically transmitted using dogs as the final hosts. the present study provides information on the antibody responses of the dogs used for the cyclical transmission of this isolate. the majority of dogs that had shed oocysts showed no sero-conversion with ... | 2001 | 11688895 |
| studies on serological cross-reaction of neospora caninum with toxoplasma gondii and hammondia heydorni. | the enzyme-linked immunosorbent assay (elisa) was used to examine cross-reactivity of neospora caninum with toxoplasma gondii and hammondia heydorni. anti-t. gondii mouse and cat sera cross-reacted with n. caninum soluble antigen (nla), but not with the recombinant surface antigen (ncsrs2). anti-h. heydorni dog sera showed no cross-reactivity with either the nla antigen or the ncsrs2. lack of cross-reactivity between anti-h. heydorni sera and n. caninum antigens, and the cross-reactivity of anti ... | 2002 | 11913555 |
| neospora caninum is an invalid species name: an evaluation of facts and statements. | an evaluation of both the formal requirements of the international rules of zoological nomenclature and the scientific reasons for the description of new genera and species shows that the name neospora caninum is a nomen nudum. the only characteristic criteria for discriminating between the previously described species hammondia heydorni and the proposed new species n. caninum (i.e. the lack of a parasitophorous vacuole) has been shown to be wrong in many publications. furthermore, absolutely no ... | 2002 | 11936509 |
| detection of hammondia heydorni-like organisms and their differentiation from neospora caninum using random-amplified polymorphic dna-polymerase chain reaction. | neospora caninum and hammondia heydorni are morphologically and phylogenetically related coccidians that are found in dogs. new diagnostic genetic loci, based on random-amplified polymorphic dna-polymerase chain reaction (rapd-pcr), were developed to aid in the detection of h. heydorni-like parasites and to discriminate them from n. caninum and other related coccidians of dogs. on the basis of the data obtained from 5 random decamers, h. heydorni (manhattan-1) and n. caninum (nc1) were character ... | 2003 | 14627168 |
| coyotes (canis latrans) are definitive hosts of neospora caninum. | four captive-raised coyote pups consumed tissues from neospora caninum-infected calves. faeces were examined from 4 days before to 28 days after infection. one pup shed n. caninum-like oocysts, which tested positive for n. caninum and negative for hammondia heydorni using pcr tests. coyotes are the second discovered definitive host of n. caninum, after dogs. in north america, the expanding coyote ranges and population increase the probability of contact with domestic livestock. to reduce the ris ... | 2004 | 15037103 |
| tissue culture and explant approaches to studying and visualizing neospora caninum and its interactions with the host cell. | neospora caninum is an apicomplexan parasite first mentioned in 1984 as a causative agent of neuromuscular disease in dogs. it is closely related to toxoplasma gondii and hammondia heydorni, and its subsequent description in 1988 has been, and still is, accompanied by discussions on the true phylogenetical status of the genus neospora. n. caninum exhibits features that clearly distinguish this parasite from other members of the apicomplexa, including distinct ultrastructural properties, genetic ... | 2004 | 15525434 |
| transmission of neospora caninum between wild and domestic animals. | to determine whether deer can transmit neospora caninum, brains of naturally infected white-tailed deer (odocoileus virginianus) were fed to 4 dogs; 2 of these dogs shed oocysts. oocysts from 1 of the dogs were tested by polymerase chain reaction and found to be positive for n. caninum and negative for hammondia heydorni. the internal transcribed spacer 1 sequence of the new strain (designated nc-deer1) was identical to n. caninum from domestic animals, indicating that n. caninum is transmitted ... | 2004 | 15715229 |
| oocysts of neospora caninum, hammondia heydorni, toxoplasma gondii and hammondia hammondi in faeces collected from dogs in germany. | faecal samples of 24,089 dogs were examined coproscopically in two veterinary laboratories in germany between march 2001 and october 2004. in 47 dogs, oocysts of 9-14 microm size were found. their morphology was similar to those of hammondia heydorni and neospora caninum. samples of 28 of these dogs were further examined by inoculation into gerbils: seven isolates induced a specific antibody response against antigens of n. caninum nc-1 tachyzoites. this response suggests that the isolates contai ... | 2005 | 16197949 |
| neosporosis and hammondiosis in dogs. | the dog is a definitive host of the protozoan parasite neospora caninum, and in many parts of the world, infection is relatively common as determined by serology. reported seroprevalences usually range from 0 to 20 per cent, however, reports of clinically affected dogs are infrequent. affected dogs are generally less than six months old and predominantly have signs of an ascending hindleg paralysis, with the associated lesions of polyradiculoneuritis and granulomatous polymyositis. although any ... | 2007 | 17547641 |
| results of parasitological examinations of faecal samples from cats and dogs in germany between 2003 and 2010. | in a retrospective study, the results of parasitological examinations of faecal samples from 8,560 cats and 24,677 dogs between january 2003 and december 2010 in germany were analysed. 30.4 % of the examined dogs and 22.8 % of the cats were infected with endoparasites. the examination of the faecal samples from dogs revealed stages of giardia spp. (18.6 %), toxocara canis (6.1 %), toxascaris leonina (0.6 %), ancylostomatidae (2.2 %), trichuris vulpis (1.2 %), capillaria spp. (1.3 %), crenosoma v ... | 2011 | 21739375 |