Epidemiology of Eimeria infections in an Austrian milking sheep flock and control with diclazuril

Platzer, Bernd; Prosl, H.; Cieslicki, M.; Joachim, Anja

doi:10.1016/j.vetpar.2004.11.031

Cited by 54 publications

(36 citation statements)

References 13 publications

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“…In this investigation, number of Eimeria species was lowest than of Skirnisson (2007), Andrade Junior et al (2012) and Dittmar et al (2010), who reported 10, 9 and 12 Eimeria species in sheep in Iceland, Brazil and Germany, respectively. But, the number of Eimeria species identified in this study was nearly similar to that of other studies (Toulah 2007;Platzer et al 2005). This disparity among the findings might be due the variations in the climate, temperature and amount of rainfall in different seasons, age, immune system of host, hygiene conditions and rearing systems.…”

Section: Discussionsupporting

confidence: 86%

“…In sheep, several species of Eimeria have been recognized including E. ahsata, E. bakuensis, E.crandallis, E. faurei, E. granulosa, E. gonzalezi, E. gilruthi, E. intricata, E. marsica, E. ovinoidalis, E. pallida, E. parva, E. punctata and E. weybridgensis. (Platzer et al 2005). E. ovinoidalis, E.bakuensis and E. ahsata are the most pathogenic species in small ruminants.…”

Section: Introductionmentioning

confidence: 99%

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The prevalence of ovine Eimeria infection in Rudsar, North of Iran, (2011–2012)

et al. 2014

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This study was undertaken to determine the prevalence of Eimeria infection in sheep in Rudsar, North of Iran, in period of 1 year (March 2011 to March 2012. The samples (approximately 3-5 grams of faeces) were collected from the rectum of 270 sheep and transferred to the parasitology laboratory. Eimeria species were identified following sporulation of faeces in a thin layer of 2.5 % potassium dichromate for one or 2 weeks at 27°C. Out of 270 faecal samples examined, 170[(63.0 %; 95 % Confidence Interval (CI) 56.9-68.7)] were positive for Eimeria spp. Five species of Eimeria, including E. ahsata, E. ovina, E. crandallis, E. parva and E. ovinoidalis were identified in faecal samples by modified McMaster technique. The most frequent species was E. crandallis. Sheep were considered in four age groups (less than 1 year old, 1-2 years old, 2-3 years old and over 3 years old).The results also indicated that less than 1 year old sheep have greater infection ratio as compare with older animals. Female had significantly higher prevalence of Eimeria than male. Higher infection was seen in females compare to males and in winter compare to summer. Parasitological gross and microscopic examinations revealed Eimeria infection is common in sheep of Rudsar, North Iran.

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Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

The prevalence of ovine Eimeria infection in Rudsar, North of Iran, (2011–2012)

et al. 2014

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“…al. 2004 ;Platzer et al 2005 ;Jorg Reeg et al 2005) but the present study is the first we are aware of to suggest that there may be a detrimental effect on body weight in adult sheep.…”

Section: Associations Between Parasite Taxa and Host Weightmentioning

confidence: 54%

Metazoan-protozoan parasite co-infections and host body weight in St Kilda Soay sheep

et al. 2008

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S U M M A R YFor hundreds of years, the unmanaged Soay sheep population on St Kilda has survived despite enduring presumably deleterious co-infections of helminth, protozoan and arthropod parasites and intermittent periods of starvation. Important parasite taxa in young Soay sheep are strongyles (Trichostrongylus axei, Trichostrongylus vitrinus and Teladorsagia circumcincta), coccidia (11 Eimeria species) and keds (Melophagus ovinus) and in older animals, Teladorsagia circumcincta. In this research, associations between the intensity of different parasite taxa were investigated. Secondly, the intensities of different parasite taxa were tested for associations with variation in host weight, which is itself a determinant of over-winter survival in the host population. In lambs, the intensity of strongyle eggs was positively correlated with that of Nematodirus spp. eggs, while in yearlings and adults strongyle eggs and coccidia oocysts were positively correlated. In lambs and yearlings, of the parasite taxa tested, only strongyle eggs were significantly and negatively associated with host weight. However, in adult hosts, strongyles and coccidia were independently and negatively associated with host weight. These results are consistent with the idea that strongyles and coccidia are exerting independent selection on Soay sheep.

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“…However, the diagnosis of eimeriosis cannot be excluded when the OPG is low or non-existent. Adult animals that excrete small amounts of oocysts are important in the epidemiology of eimeriosis; the oocysts released by these animals are usually the cause of infection in young animals (PLATZER et al, 2005). Regarding the prevalence of Eimeria sp., there have been 15 species identified that parasitize sheep (SARATSIS et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Epidemiology of Eimeria infections in sheep raised extensively in a semiarid region of Brazil

Souza

Cruz

Neto³

et al. 2015

Rev. Bras. Parasitol. Vet.

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The aim of this study was to identify and determine the prevalence of Eimeria species affecting sheep raised extensively in a semiarid region of Brazil. Fecal samples of native sheep were collected during the rainy and dry seasons. The degree of infection was determined by counting oocysts per gram (OPG) of feces, and the morphometric method was used for species identification. Oocysts were found in all the properties assessed, in which 68.3% of the animals were infected. The prevalence of oocysts was influenced by the season and animal category (P<0.05). It was higher during the rainy season than the dry season (80.2% vs. 55.8%) and highest in young animals than the adults animals (68.2% vs. 39.6%). The OPG was lower during the dry season (1,269 ± 312 vs. 4,400 ± 1,122). Ten species were found; of these, E. ovinoidalis, E. granulosa, E. faurei, and E. crandallis were the most frequent. E. ovinoidalis and E. crandallis were found in all properties, with their prevalences being 19.4% and 13.6% respectively. The high prevalence of pathogenic species shows that eimeriosis is a risk for animals raised extensively in the semiarid region.Keywords: Coccidiosis, morphometry, oocyts, OPG, parasitosis. ResumoObjetivou-se neste estudo identificar e determinar a prevalência de espécies de Eimeria que parasitam ovinos criados extensivamente em região semi-árida. Amostras de fezes de ovinos nativos foram coletados durante as estações chuvosa e seca. O grau de infecção foi determinado pela contagem de oocistos por grama de fezes (OoPG)e o método morfométrico foi utilizado para a identificação das espécies. Foram encontrados oocistos em todas os rebanhos avaliados e observou-se que 68,3% dos animais estavam infectados. A prevalência de oocistos foi influenciada pela estação climática e pela categoria dos animais (P<0,05), sendo mais alta durante a estação chuvosa em relação a estação seca (80,2% vs. 55,8%) e em animais jovens em relação aos animais adultos (68,2% vs. 39,6%). O OoPG foi menor durante a estação seca (1.269 ± 312 vs. 4.400 ± 1.122). Dez espécies foram encontradas sendo a E. ovinoidalis, E. granulosa, E. faurei, e E. crandallis as mais frequentes. E. ovinoidalis e E. crandallis foram encontrados em todas as propriedades, com prevalências de 19,4% e 13,6%, respectivamente. A alta prevalência de espécies patogênicas mostra que eimeriose é um risco para os animais criados extensivamente na região semiárida.

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Epidemiology of Eimeria infections in an Austrian milking sheep flock and control with diclazuril

Cited by 54 publications

References 13 publications

The prevalence of ovine Eimeria infection in Rudsar, North of Iran, (2011–2012)

The prevalence of ovine Eimeria infection in Rudsar, North of Iran, (2011–2012)

Metazoan-protozoan parasite co-infections and host body weight in St Kilda Soay sheep

Epidemiology of Eimeria infections in sheep raised extensively in a semiarid region of Brazil

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