Study on small ruminant lungworms and associated risk factors in northeastern Iran

Borji, Hassan; Azizzadeh, Mohammad; Ebrahimi, Mohsen; Asadpour, Mohammad

doi:10.1016/s1995-7645(12)60159-x

Cited by 24 publications

(22 citation statements)

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“…The lungworm prevalence in Sidi Bouzid District was similar to those reported in Iran (10.8%; Borji et al, 2012) and in Spain (11.6%; López et al, 2011), but lower than those reported in Turkey (14%; Yildiz, 2006), in Morocco where the animals were infested by M. capillaris (35.5-70%) and D. filaria (5-30%) (Paliargues et al, 2007), and in Ethiopia (Addis et al, 2011) where a prevalence of 32.6% was observed. In this latter country, animals are reared in highlands where the climate is quite different: mean annual rainfall of 950-1750 mm and temperatures of 3-21.6°C.…”

Section: Infestation Prevalence According To Lungworm Speciessupporting

confidence: 84%

“…The high density of sheep sharing common pastures, because extensive breeding systems are continuously used throughout the year, could also explain the high prevalence observed. Borji et al (2012) reported the presence in Iran of two lungworm species, D. filaria and P. rufescens. They showed that the infestation prevalence was significantly higher in young animals than in adult sheep (5.9% and 0.8%, respectively).…”

Section: Infestation Prevalence According To Lungworm Speciesmentioning

confidence: 99%

“…Conversely, the present study revealed no significant difference between age groups. Borji et al (2012) suggest that sheep could acquire immunity against respiratory nematodes with age. In the present study, the absence of difference between the infestation prevalence in young and adult sheep…”

Section: Infestation Prevalence According To Lungworm Speciesmentioning

confidence: 99%

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Seasonal variation of lungworm infestation of ewes at Sidi Bouzid slaughterhouse (Central Tunisia)

Elati¹,

Aloui²,

Dhibi³

et al. 2018

Rev. Elev. Med. Vet. Pays Trop.

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Les strongyloses respiratoires sont parmi les plus importantes maladies affectant les ovins élevés dans divers systèmes d’élevage de nombreux pays. En Tunisie, la lutte contre ces parasites est conduite par les éleveurs sans aucun fondement scientifique. Une enquête a été réalisée dans l’abattoir du gouvernorat de Sidi Bouzid (centre du pays) afin d’évaluer la prévalence d’infestation des moutons par les strongles respiratoires. L’étude a duré 12 mois et a concerné 720 des brebis abattues. La matière fécale de chaque brebis a été recueillie et examinée par la technique de Baermann. Soixante-huit échantillons étaient infestés par des larves de nématodes pulmonaires (9,4 ± 2,1 %). La population était dominée par Protostrongylus rufescens (4,4 ± 1,5 %) suivie de Dictyocaulus filaria (2,6 ± 1,2 %), Cystocaulus ocreatus et Neostrongylus linearis (1,3 ± 0,8 %), et enfin Muellerius capillaris (0,3 ± 0,4 %), alors que les infestations mixtes concernaient 0,4 ± 0,5 % des échantillons. L’infestation par les strongles a été observée dans tous les groupes d’âge sans différence significative (p = 0,64). Il n’y a pas eu, non plus, de différence d’infestation significative entre les brebis de races Barbarine (10,8 ± 3,6 %) et Queue fine de l’Ouest (8,5 ± 2,6 % ; p = 0,31). La prévalence la plus faible a été enregistrée au printemps (6,7 ± 3,6 %) et la plus élevée en hiver (11,7 ± 4,8 %), mais la différence entre les saisons n’était pas significative (p = 0,32). Cette étude concernant la dynamique d’activité des strongles pulmonaires devrait être complétée par des suivis permettant de déterminer l’importance économique de ces infestations, afin d’offrir une base solide à la mise en place de programmes de lutte spécifiques contre ces parasites en Tunisie.

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Section: Infestation Prevalence According To Lungworm Speciessupporting

confidence: 84%

Section: Infestation Prevalence According To Lungworm Speciesmentioning

confidence: 99%

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Seasonal variation of lungworm infestation of ewes at Sidi Bouzid slaughterhouse (Central Tunisia)

Elati¹,

Aloui²,

Dhibi³

et al. 2018

Rev. Elev. Med. Vet. Pays Trop.

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“…The aforementioned studies were conducted in the west and northeast part of Ethiopia while the present study was carried out in the southern part. Outside Ethiopia, surveys in Turkey, India and Iran [21][22][23][24][25] also reported D. filaria as the sole or predominant lungworm while in Morocco, Czech Republic, Norway and Bulgaria the most prevalent species identified was M. capillaris [26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Lungworm Infection in Small Ruminants in and Around Wolaita Soddo Town, Southern Ethiopia

Abebe¹,

Melesse²,

Mekuria³

2016

J Veterinar Sci Technol

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This study was conducted between November 2010 to April 2011 to estimate the prevalence of lungworm infection in small ruminants, determine the parasite species and identify the potential risk factors in and around Wolaita Soddo town, Southern Ethiopia. Faecal samples were collected from 360 randomly selected small ruminants (204 sheep and 156 goats) and processed with the modified Baerman technique for the extraction of first stage larvae. Overall, 45 (22.1%) sheep and 30 (19.2%) goats were found infected with lungworms. No significant difference was observed in the prevalence of lungworm infection between sheep and goats (p>0.05). Dictyocaulus filaria was the single lungworm species identified in both sheep and goats. The risk factors analyzed were sex, age, management system (zero-grazing or free-ranging), deworming history and body condition score (BCS). Management system, deworming history and BCS were significantly associated with the prevalence of D. filaria infection in sheep and goats (p<0.05 for each factor). It was observed that the prevalence was significantly higher in extensively managed/free-ranging (OR=4.6 in goats), poorly conditioned (OR=5.3 in sheep; 6.1 in goats) and nondewormed (OR=4.8 in sheep; 6.1 in goats) animals. Sex and age had no significant effect on the occurrence of D. filaria infection (p>0.05). In conclusion, the association of lungworm infections with the management system and deworming status of the animals in the present study are as expected. The association of infection with BCS requires further research to investigate if improving the nutritional status, thereby improving BCS, will result in lower prevalence of lungworm infection. Also, as the present sample size is thought to be small, further study with a larger sample size is required to determine the effect of age and host species difference in susceptibility to lungworm infection. One of the limitations of this study is that it is a one season survey and thus, a further year-round investigation is warranted to establish the association between seasonal variation and infection.

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“…A number of bacterial, viral and parasitic agents participate in sheep respiratory diseases, however most important include: mycoplasma species such as Mycoplasma ovipneumoniae, Mycoplasma.arginini, Mycoplasma agalactiae (Lin et al, 2008), lung worms particularly (Dictyocaulus filaria) (Borji et al, 2012) and bacteria like Pasteurella multocida, Manhemia haemolytica, Chlamydia psittaci, Histophilus somni, which can suppress the animal's immune system, allowing opportunistic microorganisms to colonize the lung and cause the disease (Angen et al,1998;Radostits et al, 2000;Tesfaye et al, 2013;Fulton, 2009;Alemneh and Tewodros, 2016).…”

Section: Introductionmentioning

confidence: 99%

Aerobic and anaerobic bacterial isolates from the respiratory tract of sheep slaughtered at Addis Ababa Abattoirs Enterprises, Central Ethiopia

Yegoraw¹,

Gebremeskel²,

Tesema³

et al. 2017

J. Vet. Med. Anim. Health

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The present study was an endeavor to isolate and identify the various bacteria localizing pneumonic lungs and the associated tracheas of sheep slaughtered at Addis Ababa Abattoirs Enterprise, Central Ethiopia, in both aerobic and anaerobic conditions. A total of 60 pneumonic lungs and 60 tracheal swabs were examined bacteriologically. From all the samples collected, a total of 440 bacterial isolates (239 from the aerobic culture and 201 from the anaerobic culture) were obtained. The result of aerobic isolates include: Staphylococcus species (31.38%), Pasteurella hemolytica (29.71%), Bacillus species (10.04%), Bibersteinia trehalosi (6.69%), Micrococcus (3.77%), Escherichia coli (3.35%), Streptococcus species (2.51%), Rhodococcus equi (2.93%), Pseudomonas species (2.09%), Klebsiella pnuemonea (0.84%), Actinobacillus species and Bordetella species (1, 29%); whereas Staphylococcus species (26.87%), P. hemolytica (37.81%), Bacillus species (3.98%), B. trehalosi (10.45%), Micrococcus (3.48), E. coli (6.97%), Streptococcus species (0.5%), Rhodococcus equi (0.5%), Klebsiella pneumoniae (2.99%) and Actinobacillus species (1.49%) were among anaerobic isolates. Thus, isolation of multiple bacterial species from the respiratory tracts of pneumonic sheep in this study signifies their possible role in the involvement of respiratory diseases. Appropriate prevention and control methods should be established along with identification of the most pathogenic species by future studies.

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Study on small ruminant lungworms and associated risk factors in northeastern Iran

Abstract: Due to its impact on production, emphasis should be given for the control and prevention of lungworm infection in this area.

Cited by 24 publications

References 4 publications

Seasonal variation of lungworm infestation of ewes at Sidi Bouzid slaughterhouse (Central Tunisia)

Seasonal variation of lungworm infestation of ewes at Sidi Bouzid slaughterhouse (Central Tunisia)

Lungworm Infection in Small Ruminants in and Around Wolaita Soddo Town, Southern Ethiopia

Aerobic and anaerobic bacterial isolates from the respiratory tract of sheep slaughtered at Addis Ababa Abattoirs Enterprises, Central Ethiopia

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