Milk losses due to bovine tropical theileriosis (Theileria annulata infection) in Algeria

Ayadi, Ouarda; Gharbi, Mohamed; Elfegoun, Mohamed Cherif Benchikh

doi:10.1016/j.apjtb.2016.06.014

Cited by 14 publications

(12 citation statements)

References 6 publications

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“…This may be attributed to slow response in optimizing the compromised haemato-biochemical profile after specific treatment controlling parasitemia. Slow response in the improvement of milk production in T. annulata infected cattle treated with buvarvaqunone has been reported (Ayadi et al 2016). Tick control was achieved in all the buffaloes after 3 consecutive application of module-V at weekly intervals.…”

Section: Therapeutic Managementmentioning

confidence: 76%

Mixed Infection of Tick-borne Haemo-parasites in Water Buffalo and Associated Pathological Responses and Treatment

Kumar¹,

Kumar²,

Roy³

et al. 2021

IJAR

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Background: Water buffaloes are important milch species of tropical and subtropical countries. In general, they are considered to more resistant to diseases compared to crossbred cattle. However, a recent problem of tick-borne diseases in the water buffaloes by the field veterinarians and farmers causing production losses was observed. The study was conducted to explore the spectrum of tick-borne diseases (TBDs) infections in buffaloes and analyze the associated risk factors. Methods: Acute-phase response, cytokine and oxidative stress in infected buffaloes with TBDs were evaluated and compared with the negative buffaloes (control) to elucidate their role in pathogenesis and outcome of infection. The study was undertaken in 107 tick-infested water buffaloes. The conventional Giemsa stained blood smear (GSBS) based confirmation and classification of infection of haemo-parasites were made. The statistical model was used to understand their relevance with TBDs. Conclusion: Tick-borne disease in water buffaloes must be looked upon seriously to maintain good productivity. The buffaloes are often accompanied by low and un-yielding clinical symptoms due to associated co-infections of haemo-parasites. Our study showed that the buffaloes had a high prevalence (47.66%) of haemo-parasites transmitted by the ticks associated with co-infections and a low level of parasitemia. Most buffaloes responded symptomatically with the different modalities administered. Production parameter was not restored post 15 days of treatment. Oxidative stress is one of the important mechanisms of production losses in infected buffaloes.

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Section: Therapeutic Managementmentioning

confidence: 76%

Mixed Infection of Tick-borne Haemo-parasites in Water Buffalo and Associated Pathological Responses and Treatment

Kumar¹,

Kumar²,

Roy³

et al. 2021

IJAR

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“…A disease outbreak occurred in Nouakchott following the introduction of Moor zebus from South Trarza region into herds of dairy cows imported from France (Jacquiet et al, 1990(Jacquiet et al, , 1994 (Gosrani, 1999) where a low incidence of tropical theileriosis was recorded. This tick was also found in few farms of the continental Tunisian Oasis of Hazoua, albeit not in association with tropical theileriosis cases (Hniche, 2006 (Aithamou et al, 2012;Ayadi et al, 2016Ayadi et al, , 2017Bouattour et al, 1996;Darghouth, 2000;El Haj et al, 2002;Rahali, 2014;Ziam & Benaouf, 2003). The relationship between the distribution and the bioclimatic conditions seems to be complex as high prevalence has been recorded in both semi-arid and sub-humid regions (Ayadi et al, 2016(Ayadi et al, , 2017Darghouth, 2000;Darghouth et al, 1996;Rahali, 2014).…”

Section: Distribution Of T Annulata Infectionsmentioning

confidence: 96%

“…In carrier pure‐bred dairy cows, a mean milk yield decrease of 0.7 litres/day was recorded (Gharbi et al., ). In Algeria, milk yield losses in crossbred cows treated for tropical theileriosis were estimated to an average of 2.76 L day −1 cow −1 over a period of 63 days (Ayadi, Gharbi, & Elfegoun, ). In Egypt, tropical theileriosis causes productivity losses in local cattle breed and water buffaloes and case fatalities especially in exotic cattle breeds (Michael, el Refaii, McHardy, & Rae, ).…”

Section: Recent Epidemiological Investigations Into Tropical Theilerimentioning

confidence: 99%

“…This distribution is to some extent influenced by a number of risk factors such as the geographic areas, management systems and the state of the cattle housing (Salih, El Hussein, Kyule et al., ; Salih, El Hussein, Seitzer, & Ahmed, ). In Algeria, Morocco and Tunisia, where a high diversity of bioclimatic zones over relatively limited geographical areas is observed, several surveys have shown a distribution extending to humid, sub‐humid and semi‐arid regions (Aithamou et al., ; Ayadi et al., , ; Bouattour et al., ; Darghouth, ; El Haj et al., ; Rahali, ; Ziam & Benaouf, ). The relationship between the distribution and the bioclimatic conditions seems to be complex as high prevalence has been recorded in both semi‐arid and sub‐humid regions (Ayadi et al., , ; Darghouth, ; Darghouth et al., ; Rahali, ).…”

Section: Recent Epidemiological Investigations Into Tropical Theilerimentioning

confidence: 99%

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Current status of tropical theileriosis in Northern Africa: A review of recent epidemiological investigations and implications for control

Gharbi

Darghouth

Elati

et al. 2020

Transbound Emerg Dis

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Tropical theileriosis caused by the apicomplexan hemoparasite Theileria annulata is a tick‐borne disease that constraints livestock production in parts of Europe, Asia and Africa. Four Hyalomma tick species transmit T. annulata in at least eight Africa countries (Mauritania, Morocco, Algeria, Tunisia, Egypt, Sudan, South Sudan and Ethiopia). The two dominant T. annulata vector ticks present in Africa, H. scupense and H. anatolicum, underlie two different patterns of transmission, which in turn greatly influence the epidemiology of tropical theileriosis. H. dromedarii and H. lusitanicum are also capable of transmitting T. annulata in North Africa, but their roles are associated with specific production systems and agro‐ecological contexts. The emergence of resistance to the most widely used theilericidal compound, buparvaquone, continues to limit the effectiveness of chemotherapy. In addition, acaricide use is increasingly becoming unsustainable. Deployable T. annulata attenuated live vaccines established from local strains in Tunisia, Sudan and Egypt are available, and recent work has indicated that these vaccines can be protective under conditions of natural transmission. However, vaccination programmes may vary over space and time due to differences in the prevalence of disease amongst cattle populations, as well seasonal variation in vector activity. We review recent descriptive and analytical surveys on the epidemiology of T. annulata infection with reference to (a) demographic aspects such as breeds and ages of cattle herds previously exposed to distinct T. annulata infection pressures and (b) seasonal dynamics of tick activity and disease transmission. We then discuss how the wider endemic patterns that we delineate can underpin the development and execution of future vaccination programmes. We also outline options for integrated control measures targeting tick vectors and husbandry practices.

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“…The mortality rate in the introduced breeds fluctuates from 40 to 90%, while the mortality rate in native cattle can be only 3% [34]. It has been estimated a decrease in weekly milk production of 2.76 L/day/cow, which corresponds to 31.92% of total milk yield [35].…”

Section: Theileriosismentioning

confidence: 99%

Economic and Health Impact of the Ticks in Production Animals

Hurtado¹,

Giraldo-Ríos²

2019

Ticks and Tick-Borne Pathogens

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Nowadays there is no doubt about the importance of production animals in the economy and food security of the population throughout the world. For an animal to be productive (cattle, small ruminants, swine or poultry) is needed to be in adequate health conditions. The health of these animals can be altered by the direct and indirect effects of ticks, causing significant losses in the production of meat, milk, eggs, leathers, and in many cases the death of the affected animals. The direct losses are related to the damage produced by the ticks when feeding on the blood of their hosts, while the indirect losses are related to the infectious agents transmitted by the ticks, and the costs associated to the treatment and control. It is important then, to know what are the economic and health impacts of ticks on the main production animals.

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Milk losses due to bovine tropical theileriosis (Theileria annulata infection) in Algeria

Cited by 14 publications

References 6 publications

Mixed Infection of Tick-borne Haemo-parasites in Water Buffalo and Associated Pathological Responses and Treatment

Mixed Infection of Tick-borne Haemo-parasites in Water Buffalo and Associated Pathological Responses and Treatment

Current status of tropical theileriosis in Northern Africa: A review of recent epidemiological investigations and implications for control

Economic and Health Impact of the Ticks in Production Animals

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