The epizootiology of gastrointestinal nematode parasites in Greek dairy breeds of sheep and goats

Papadopoulos, Elias; Arsenos, G.; Sotiraki, Smaragda; Deligiannis, C.; Lainas, T.; Zygoyiannis, D.

doi:10.1016/s0921-4488(02)00258-4

Cited by 34 publications

(23 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Usually sheep are used to grazing close to the ground and consequently are more exposed to the infective larvae compared with free-ranging goats that are less exposed to the infective larvae since their feeding behaviour includes a large component of browsing at levels well above the ground (Hoste et al 2007). This finding agrees with a previous study in the country (Abebe and Esayas 2001) and other countries like Greece (Papadopoulos et al 2003) and Kenya (Kanyari et al 2009) but inconsistent with a Nigerian study (Nwosu et al 2007). …”

Section: Discussionsupporting

confidence: 64%

Gastrointestinal nematode infections in small ruminants under the traditional husbandry system during the dry season in southern Ethiopia

Abebe

Gebreyohannes

Mekuria

et al. 2010

Trop Anim Health Prod

View full text Add to dashboard Cite

A cross-sectional study was conducted from November 2008 to February 2009 to investigate the prevalence and intensity of infection and risk factors of gastrointestinal (GI) nematodes in small ruminants kept under the traditional husbandry system in two districts in southern Ethiopia. Faecal samples collected from a total of 510 small ruminants (284 sheep and 226 goats) and analysed by a modified McMaster technique revealed that 222 animals (43.5%) were found to be infected with one or more GI nematodes. Five identical genera of nematodes were found in both sheep and goats, which in order of predominance were Haemonchus (56.3%), Trichostrongylus (39.6%), Oesophagostomum (22.9%), Trichuris (21.6%) and Bunostomum (10.4%). No significant (p > 0.05) differences were observed between sheep and goats proportions except for Trichuris (p < 0.05). In both sheep and goats, most of the animals were heavily infected showing faecal egg counts (FECs) above 1,200 epg. Sheep had a significantly (p < 0.05) higher mean FEC than goats. In sheep and goats, both the prevalence of GI nematodes and mean FEC were significantly (p < 0.001) associated with body condition score and faecal consistency but not with district, sex and age (p > 0.05 for each factor). In conclusion, the observation of a strong association of GI nematodes with poor body condition coupled with heavy intensity of infection in the majority of infected animals and an abundance of nematode genera of widespread economic and pathological significance warrants the institution of appropriate control measures that should necessarily include improvement of the nutritional status of the animals.

show abstract

Section: Discussionsupporting

confidence: 64%

Gastrointestinal nematode infections in small ruminants under the traditional husbandry system during the dry season in southern Ethiopia

Abebe

Gebreyohannes

Mekuria

et al. 2010

Trop Anim Health Prod

View full text Add to dashboard Cite

show abstract

“…The pooled faecal samples used in this study were found to have significant different nematode egg counts between sheep and goats. This is a common observation, even in cases where both animal species are kept under the same management system (Papadopoulos et al, 2003).…”

Section: Resultsmentioning

confidence: 89%

“…The nematode larvae identified in this study represent the most common genera parasitizing small ruminants in Greece. The most dominant small ruminant gastrointestinal nematode parasites in our country are Teladorsagia circumcincta and Haemonchus contortus, followed by other genera in smaller percentages, such as Trichostrongylus, Chabertia, Cooperia and others (Papadopoulos et al, 2003;Gallidis et al, 2009). Among them, Teladorsagia and Haemonchus genera have developed anthelmintic resistant strains in Greece, a fact that makes their monitoring most important in regional epidemiological surveys or parasite control schemes (Gallidis et al, 2009.…”

Section: Discussionmentioning

confidence: 88%

Reduction rate of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC

Drimtzia

Papadopoulos

2018

J Hellenic Vet Med Soc

View full text Add to dashboard Cite

ABSTRACT. Gastrointestinal nematode parasites cause major production losses to small ruminants. The most common way to diagnose or monitor the worm burdens in sheep and goats remains the quantitative parasitological examinations, i.e. the faecal egg counts. However, the reliability of the results of such methods depends greatly on the conditions and duration of the storage of the faecal samples prior to examination. The aim of this research was to evaluate the reduction rate and the maximum storage period, without significant losses, of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC. Towards this end, a pooled faecal sample was formed by collecting faeces from naturally infected sheep and goats (separately). Faecal egg counts and coprocultures were performed on fresh faeces and on preserved ones every week and up to 119 days post sampling. It was concluded that the preservation at 4 o C, i.e. into a refrigerator, of fresh faeces from sheep and goats for parasitological examinations poses danger of misdiagnosis, if not performed in a period not exceeding 3 weeks of time. The rate of reduction of the faecal nematode egg counts starts to be significant lower than the ones performed with fresh samples, for both sheep and goats, after the third week of storage. The percentage of the gastrointestinal nematode larvae developing to the infective third-stage alters significantly for the Haemonchus genus, soon after the first week of storage (p<0.05). Keywords

show abstract

“…Generally, gastrointestinal parasitic burdens in sheep are significantly higher than in goats due to differences in host susceptibility and grazing behaviour (Papadopoulos et al, 2003). The odds of positivity for H. contortus were 4.57-fold higher in small ruminants belonging to organic farms than in small ruminants belonging to conventional farms.…”

Section: Discussionmentioning

confidence: 99%

“…Larvae of the fly O. ovis cause nasal myiasis in sheep and goats that may lead to severe clinical signs, which together with the compromised animal welfare caused by the adult fly may result into serious economic losses (Papadopoulos et al, 2006). These parasites occur in Greece (Papadopoulos et al, 2003(Papadopoulos et al, , 2006Christodoulopoulos et al, 2008) and control measures are needed to minimise serious economic consequences for the livestock industry. Various risk factors have been found in previous studies to be associated with parasitic infections in farm animals Kantzoura et al, 2011Kantzoura et al, , 2012Kantzoura et al, , 2013.…”

Section: Introductionmentioning

confidence: 99%

An analysis of seroprevalence and risk factors for parasitic infections of economic importance in small ruminants in Greece

Kouam

Diakou

Kantzoura

et al. 2014

The Veterinary Journal

View full text Add to dashboard Cite

The epizootiology of gastrointestinal nematode parasites in Greek dairy breeds of sheep and goats

Cited by 34 publications

References 18 publications

Gastrointestinal nematode infections in small ruminants under the traditional husbandry system during the dry season in southern Ethiopia

Gastrointestinal nematode infections in small ruminants under the traditional husbandry system during the dry season in southern Ethiopia

Reduction rate of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC

An analysis of seroprevalence and risk factors for parasitic infections of economic importance in small ruminants in Greece

Contact Info

Product

Resources

About