Prevalence and intensity of Oestrus ovis in sheep of Shiraz, southern Iran

Shoorijeh, Sardar Jafari; Negahban, Shahram; Tamadon, Amin; Behzadi, Mohammad Amin

doi:10.1007/s11250-009-9309-8

Cited by 22 publications

(27 citation statements)

References 13 publications

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“…This observation is higher than the prevalence of 77.4% in sheep and 72.9% in goats previously reported by Yilma and Genet (2000), 77% in small ruminants recorded in Western Shoa by Tesfaye (1993), and 38.8% prevalence of O. ovis in sheep in Debre Berhan by Bekele and Mukasa-Mugerwa (1994). This variation may be attributed to possible reasons like the differences in agro-ecology like altitude, moisture, and temperatures that determine the fly density, absence of treatments against this parasite, and For similar reasons, the overall and monthly prevalence of O. ovis recorded in both host species in the present study is higher than the prevalence recorded in other parts of the world: 22.6% in sheep and 18.4% in goats in Libiya by Gabaj et al (1993), 58% in sheep (Abo-Shehada et al 2000) and 24% in goats (AboShehada et al 2003) in Jordan, 55.8% in Sicily, Italy by Caracappa et al (2000), 43.4% in sheep and 28.4% in goats in France by Dorchies et al (2000), 71.1% in sheep (Alcaide et al 2003) and 46% in goats (Alcaide et al 2005) in Spain, 59% in sheep in Turkey by Uslu and Dik (2006), 62.07% in sheep in Nigeria by Oniye et al (2006), 49.5% in sheep in Iran by Shoorijech et al (2009), 53% in sheep in Palestine by Othman (2009), and 40.3% in sheep in Turkey by Arslan et al (2009).…”

Section: Discussionmentioning

confidence: 97%

“…It adversely affects the health and productivity of small ruminants by causing irritation due to rhinitis, sinusitis and pharyngitis, nasal discharge, sneezing, dyspnea, incoordination of movements, circling, emaciation, severe annoyance, and secondary bacterial complications (Murguia et al 2000;Caracappa et al 2000;Tabouret et al 2001;Papadopoulos et al 2001;Alcaide et al 2003;Shoorijech et al 2009). However, Godara et al (2009) have recovered larvae of O. ovis from aberrant sites in mandibular spongy bones of a goat associated with very deep erosions.…”

Section: Introductionmentioning

confidence: 99%

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Oestrus ovis larval myiasis among sheep and goats in Central Oromia, Ethiopia

Alem

Kumsa

Degefu

2009

Trop Anim Health Prod

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A study was conducted to determine the prevalence, larval burden, and associated gross pathological lesions of Oestrus ovis in sheep and goats slaughtered at Luna export abattoir in Central Oromia from November 2007 to March 2008. For this purpose, a total of heads of 431 goats and 369 sheep were thoroughly examined for the presence of first (L1), second (L2), and third (L3) larval stages according to standard procedures. O. ovis larvae were detected in 349(94.6%) sheep and 381(88.4%) goats. All three larval instars were observed in each study months. Statistically significant variation (chi (2) = 29.2676, df = 6, P < 0.05) was observed in the prevalence of O. ovis among small ruminants of different origins. Likewise, statistically significant (chi (2) = 68.3, df = 4, P < 0.05) difference was recorded in the prevalence of O. ovis in sheep and goats among different study months. The overall monthly prevalence ranged from 77.7% in November to 98.8% in March. The prevalence of O. ovis in small ruminants of less than 1 year of age was significantly (chi (2) = 8, df = 1, P < 0.05) higher than those with greater than 1 year of age. An overall proportion of 33.8%, 40.1%, and 26.1% were recorded for L1, L2 and L3, respectively. Whereas 6.8 monthly mean larval burden per individual infested animal was noticed. Out of the total infested heads in goats, 33.6% had catarrhal discharges, 16.8% purulent exudates, 64.83% rhinitis, 68.77% sinusitis, 14.2% pharyngitis, and 9.2% bloody exudates. Similarly, of the total infested heads of sheep, 18.9% purulent exudates, 80.8% rhinitis, 71.9% sinusitis, 13.5% pharyngitis, and 7.7% bloody exudates gross lesions were recorded.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Oestrus ovis larval myiasis among sheep and goats in Central Oromia, Ethiopia

Alem

Kumsa

Degefu

2009

Trop Anim Health Prod

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“…The difference between results may be explained in part by the fact that in Bagé, the animals were exposed to O. ovis infestation for a longer period of time (from one month to one year), while in the present experiment the sheep were exposed for just 28 days. Moreover, other factors may have influenced the O. ovis epidemiology, such as the climatic conditions of each region, size of sheep flock and management, which can result in a variable prevalence, as demonstrated by numerous studies conducted in slaughterhouses in different countries (YILMA;DORCHIES, 1991;ABO-SHEHADA et al, 2000;SCALA et al, 2002;ALCAIDE et al, 2003;ARSLAN et al, 2009;SHOORIJEH et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Epidemiology of Oestrus ovis (Diptera: Oestridae) in sheep in Botucatu, State of São Paulo

Silva

Bassetto

Amarante

2012

Rev. Bras. Parasitol. Vet.

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The seasonal factors that influence Oestrus ovis infestation in sheep were determined in Botucatu, State of São Paulo, Southwestern Brazil, from April 2008 to March 2011. Two tracer lambs were monthly exposed to natural infestation by O. ovis larvae for 28 consecutive days, by grazing with a sheep flock. Tracer animals were then euthanized and the larvae of O. ovis recovered from nasal and sinus cavities. Of the 72 tracer lambs, 50% were infested with O. ovis larvae and the mean intensity of infestation per head infested was 16.8 larvae, with an average of 7.8 L1, 5.3 L2 and 3.7 L3. O. ovis larvae were present during the four seasons of the year, but the mean larval burden was significantly higher during the spring and summer months, compared to winter (P < 0.05). The highest rate of larvae recovery coincided with mean temperatures between 20 °C and 25 °C and air relative humidity around 70%. Results suggest that evolution and development of O. ovis practically occurs throughout the entire year, with larval infestation especially frequent during the spring and summer months.Keywords: Oestrus ovis, epidemiology, sheep. ResumoOs fatores sazonais que influenciam a infestação por larvas de Oestrus ovis, foram determinados no período de abril de 2008 a março de 2011, em ovinos criados em Botucatu, São Paulo, região Sudeste do Brasil. Mensalmente, dois cordeiros traçadores permaneceram em pastejo com um rebanho ovino durante 28 dias consecutivos, expostos à infestação natural por larvas de O. ovis. Em seguida, os cordeiros foram sacrificados, e as larvas de O. ovis recuperadas da cavidade nasal e seios frontais. Dos 72 cordeiros traçadores, 50% estavam infestados por larvas de O. ovis, com intensidade média de infestação de 16,8 larvas/cabeça infestada, com média de 7,8 L1, 5,3 L2 e 3,7 L3. As larvas de O. ovis foram recuperadas durante as quatro estações do ano, mas o número médio de larvas foi significativamente superior durante os meses de primavera e verão comparado aos meses de inverno (P < 0,05). A maior taxa de recuperação larval coincidiu com temperaturas médias entre 20 °C e 25 °C e umidade relativa do ar por volta de 70%. Os resultados sugerem que a evolução e desenvolvimento de O. ovis ocorre praticamente durante o ano inteiro, mas a infestação é mais frequente nos meses de primavera e verão.

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“…In like manner infection rate in both sexes were also mentioned by different studies (Gebremedhin, 2011;Scholtz et al, 2011;Shoorijeh et al, 2011;Abo-Shehada et al, 2003). While, Radfar and Hajmohammadi (2012) found that female goats were more significantly affected in comparison to male goats.…”

Section: Discussionmentioning

confidence: 77%

Occurrence, Risk Assessment and Wound Healing Approach of Myiasis in Cattle and Goat in Chittagong, Bangladesh

Sarker¹,

Sen²,

Ahaduzzaman³

et al. 2016

Res. J. Vet. Pract.

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| The present study was conducted to determine the clinical prevalence of myiasis in cattle and goats at three veterinary hospitals of Chittagong and Cox's Bazar district, Bangladesh. During the study period overall 2270 cases were observed of which 91 cattle and goats were affected with myiasis. The disease was diagnosed by their clinical history and signs. By using a structured questionnaire several factors like rearing system, species, breed, age, sex and predisposing factors, body part affected and antimicrobials used to treat myiasis wound of each individual case were recorded and subsequently analyzed. The overall proportionate prevalence of myiasis was 4.09% of which 1.67% (n=38) in cattle and 2.42% (n=55) in goat whereas proportionate prevalence in Patiya, Ruma and SAQTVH was 5.52% (N=670), 3.65% (N=1150) and 2.55% (N=550). Younger goat less than 1 year of age had 34 (71.4%) prevalence along with a semi-intensive rearing system 38 (69.09%) showed significantly highest infestation rate. In case of cattle the highest prevalence was found in cross breed 18 (56.2%) but 23 (41.82%) in case of Jamunapari breed of goat. Frequency of myiasis was higher in the vagina (13.99%) than other body regions and the most common predisposing factors were diarrhoea (17%), parturition (12%) and omphalitis (15%). Hematological parameters revealed that eosinophils were the predominated circulation cells. During the treatment of myiasis wound of cattle and goats penicillin and streptomycin combination was used in maximum 38 (40.86%) cases. These findings bring out the wound healing approach, management and treatment of myiasis in cattle and goat within different topography in Chittagong, Bangladesh. Keywords

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Prevalence and intensity of Oestrus ovis in sheep of Shiraz, southern Iran

Cited by 22 publications

References 13 publications

Oestrus ovis larval myiasis among sheep and goats in Central Oromia, Ethiopia

Oestrus ovis larval myiasis among sheep and goats in Central Oromia, Ethiopia

Epidemiology of Oestrus ovis (Diptera: Oestridae) in sheep in Botucatu, State of São Paulo

Occurrence, Risk Assessment and Wound Healing Approach of Myiasis in Cattle and Goat in Chittagong, Bangladesh

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