Prevalence and intensity of infection with gastrointestinal nematodes in sheep in eastern Serbia

Abstract

A coprological examination of 680 grazing sheep was performed in Eastern Serbia from March 2011 to November 2012 in order to determine the presence of gastrointestinal (GI) nematode parasites. Fecal samples were randomly collected and examined by using qualitative and quantitative coprological techniques. It was found that 74.56% sheep were infected. Samples that contained nematode eggs were processed for larval development and eleven nematode genera were identified: Haemonchus (46.91%), Ostertagia (25.88%), Marshallagia (21.91%), Cooperia (14.12%), Trichostrongylus (39.85%), Nematodirus (35.88%), Bunostomum (23.97%), Strongyloides (17.06%) Oesophagostomum (40.73%), Chabertia (32.79%) and Trichuris (10.88%). Higher prevalence of infection was observed in females (p<0.01), as well as in adults (p<0.001). Regarding the intensity of infection, in 40.63% sheep it was low, in 51.87% moderate and in 7.50% high. There was no difference in intensity of infection considering sex and age of animals. Moreover, simultaneous infection with different number of nematode genera was dependent on sheep’s age (p<0.001). These results suggest that GI nematodes are a conspicuous problem of grazing sheep in the study area. [Projekat Ministarstva nauke Republike Srbije, br. III 046002

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Metagenomic Studies for the Detection of Parelaphostrongylus odocoilei, Ostertagia leptospicularis and Eimeria ahsata in Northern Cyprus Sheep for the First Time

“…It was also observed that eggs of GIN in the genera of Heamonchus were the most encountered (80) accounting for 40% prevalence (Table 1). Our results of high prevalence are similar to those of Kulišić et al (2013) and Mphahlele et al (2021) and gastrointestinal parasite infection has a direct effect on the health and productivity of animals, thereby causing a reduction in output and, consequently, a decrease in the owner's and community's income (Mathewoset al, 2022). The predominance of Haemonchus over other GIT parasites has also been reported by Tariq et al (2008) and Wani et al (2011) in Kashmir Valley.…”

Prevalence of gastrointestinal parasitic infections in cattle and sheep in two regions of Romania

“…Fecal examination of sheep revealed that the overall prevalence rate of GIT parasites was 92.6%. In comparison, coprological surveys with similar design conducted in Turkey [21], Spain [22], Bulgaria [23], Republic of Moldova [24], Kenya [25], Brazil [26], Ethiopia [20], Serbia [27], Papua New Guinea [28], India [29], Serbia [30], Nigeria [31], Colombia [17], and Pakistan [32] the prevalence of GIT parasites was 100%, 100%, 98.5%, 94%, 80%, 76.6%, 75.3%, 74.5%, 72%, 68.7%, 64.1% 63.2%, 63.0%, and 53.3%, respectively. In Romania, the study conducted by Indre et al [33] in several flocks from the western part of the country highlighted an overall GIT parasites prevalence value of 75%, but in this study the investigations were focused only on the survey of the occurrence of GIT nematodes and trematodes.…”