Theileriosis in a Missouri Beef Herd Caused by <i>Theileria buffeli</i>

Stockham, S. L.; Kjemtrup, Anne; Conrad, Patricia A.; Schmidt, D. A.; Scott, Melissa A.; Robinson, Thomas W.; Tyler, Jeff W.; Johnson, Gayle C.; Carson, C. A.; Cuddihee, P.

doi:10.1354/vp.37-1-11

Cited by 65 publications

(22 citation statements)

References 33 publications

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Section: Discussioncontrasting

confidence: 99%

“…This is in contrast to most previous reports that document significantly lower TEC, Hb, and PCV values in theileriosis-affected cattle [36,37] . These alterations have been attributed to parasitaemia-induced-anaemia and immunemediated erythrophagocytosis [37] . The lack of difference in haematological indices of T. annulata infection Cholistani cattle in this study may indicate an innate potential to maintain haematological parameters at consistent levels regardless of stressors, as reported by Farooq et al [2] .…”

Section: Discussioncontrasting

confidence: 99%

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Pakistan’ın Cholistan Çölünde Başıboş Dolaşan Cholistan Sığırlarında Tropikal Theileriosisin Prevalansı ve Kan Değerleri

SAEED¹,

Shaikh²,

GULSHER³

et al. 2016

Kafkas Univ Vet Fak Derg

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This is the first report on tropical theileriosis in Cholistani cattle, with the aim of 1) assessing the reliability of PCR as a tool for diagnosis of the early/carrier state; 2) determining the prevalence of theileriosis; and 3) comparing haematological profiles of parasite-positive and parasite-negative cattle. A total of 264 cattle (142 female and 122 male; 127 adult and 137 young) were examined for tropical theileriosis through clinical examination, stained smear screening, and polymerase chain recation. No cattle showed clinical signs of the disease. Of the diagnostic tests, PCR was more sensitive for detection of the early/carrier state of theileriosis (19.3%) compared to stained thin blood smear examination (1.9%). Female (24.6%) and young animals (23.4%) showed higher prevalence than males and adults, but not significant (P>0.05). Prevalence of the disease (51.6%) was significantly higher (P<0.05) in summer. Haematological indices were not significantly different in parasite-positive compared to parasite-negative cattle, except for total protein and creatinine which were significantly higher in infected animals. The study revealed a substantial prevalence of tropical theileriosis in Cholistani cattle. Nevertheless, their adaptation to the climate and their potential for tick and disease resistance may reflect in the absence of clinical signs and in normal haematological indices. Keywords: Theileria annulata, Cattle, PCR, Pakistan Pakistan'ın Cholistan Çölünde Başıboş Dolaşan Cholistan Sığırlarında Tropikal Theileriosisin Prevalansı ve Kan Değerleri ÖzetCholistan sığırlarında tropical theileriosis ile ilgili ilk rapor olan bu çalışma ile; 1 teşhis yöntemi olarak taşıyıcı hayvanlarda PCR metodunun güvenirliliğinin belirlenmesi; theileriosisin prevalansının tespit edilmesi; parazit pozitif ve negative bireylerde kan parametrelerinin karşılaştırılması hedeflenmiştir. Toplam 264 sığır klinik, mikroskopik ve PCR ile tropical theileriosis yönünden muayene edilmiştir. Sığırların hiç birinde klinik bulgu gözlenmemiştir. PCR (%19.3), subklinik enfeksiyonların belirlenmesinde mikroskopik bakıya (%1.9) göre oldukça duyarlı bulunmuştur. Hastalğın yaygınlığı dişi (24.6%) ve genç hayvanlarda (%23.4) erkek ve erişkinlere göre daha yüksek bulunmuş, ancak bu farklılığın istatistiksel olarak anlamlı olmadığı (P>0.05) görülmüştür. Hastalığın, yaz aylarında (%51.6) daha yüksek olduğu tespit edilmiştir. T. annulata yönünden pozitif ve negative hayvanların kan değerlerinde total protein ve creatinine hariç (bu değerler enfekte hanvanlarda yüksek bulunmuştur) bir farklılık gözlenmemiştir. Bu çalışma Cholistan sığırlarında hastalığın prevalansının yüksek olduğunu ortaya koymuştur. Muayene edilen hayvanların hiç birinde klinik bulguların gözlenmemesi, kan değerlerinde değişikliğin olmaması, bu sığırların kenelere ve hastalığa karşı dirençlerini yansıtmaktadır. Anahtar sözcükler: Theileria annulata,

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Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 99%

Pakistan’ın Cholistan Çölünde Başıboş Dolaşan Cholistan Sığırlarında Tropikal Theileriosisin Prevalansı ve Kan Değerleri

SAEED¹,

Shaikh²,

GULSHER³

et al. 2016

Kafkas Univ Vet Fak Derg

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“…annulata causes liver failure [35,39]. Moreover, extra-vascular proteinaceous fluid in body cavities due to diseased lymph nodes [36,40], anorexia and diarrhea also cause hypoproteinemia [23,41]. There was highly significant decrease after treatment were observed in serum ALT and AST level in Groups I and II as compared to its pre-treatment level in all diseased groups.…”

Section: Resultsmentioning

confidence: 99%

Studies on alterations of clinical and hemato-biochemical parameters before and after treatment in calves naturally infected with theileriosis

Kachhawa¹,

Kumar²,

Sharma³

et al. 2016

Vet World

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Aim:The aim was to determine hemato-biochemical alterations and to determine the better treatment of theileriosis in naturally infected calves.Materials and Methods:A total of 74 Holstein crossbred calves below 6 months of age, of either sex were included for present investigation in Bikaner. Based on the clinical examinations and laboratory results, 20 calves included for hemato-biochemical studies (before and after treatment) and divided into two groups (having 10 calves each).Results:The clinical examination of these calves revealed weakness, ticks infestations, high fever above 104°F, pronounced swelling of prescapular, prefemoral, parotid lymph nodes, loss of elasticity of skin, anemia, lacrimal discharges, pulpy cornea, tachycardia, and dyspnea. There was highly significant decrease (p<0.01) in hemoglobin, total erythrocyte count, packed cell volume and total leukocyte count, serum glucose, total protein, globulin and albumin level and highly significant increase in aspartate aminotransferase and alanine aminotransferase level as compared to healthy control animals in Group I and II. The animals of Group II treated with buparvaquone along with single blood transfusion shows better recovery then animals of Group I treated with bupavaqone and hematinic.Conclusions:Significant changes were found in hemato-biochemical parameters in theileria affected calves before treatment as compare to healthy control calves. Significant improvement was observed in hemato-biochemical parameters in buparvaquone and single blood transfusion treated calves as compare to another group, so it is concluded that buparvaquone and single blood transfusion is better combination for treatment of theileriosis.

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“…These data are similar to those found by other authors in Italy, Spain, Portugal and Tunisia [13,14,15, 22, 27] and constitute further evidence of the high prevalence of T. buffeli, indicating that it may be the most common piroplasm in the Mediterranean basin. T. buffeli is considered a non-pathogenic or scarcely pathogenic species, although some cases of disease have been reported [9, 29]. …”

Section: Discussionmentioning

confidence: 99%

Retrospective Study of Hemoparasites in Cattle in Southern Italy by Reverse Line Blot Hybridization

Ceci

Iarussi

Greco

et al. 2014

The Journal of Veterinary Medical Science

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Tick-borne diseases are widespread in tropical and temperate regions and are responsible for important economic losses in those areas. In order to assess the presence and prevalence of various pathogens in southern Italy, we retrospectively analyzed cattle blood samples collected for a previous study in 2000 using reverse line blot (RLB) hybridization. The study had been carried out in three regions of southern Italy on 1,500 randomly selected and apparently healthy adult cattle. RLB showed that 43.7% of the cattle were positive for nine different species of hemoparasites with either a single infection or a mixed infection. Theileria buffeli was the most common species found, being present in 27.3% of the animals, followed by Anaplasma marginale in 18.1%, Anaplasma centrale in 13.8%, Babesia bigemina and Anaplasma bovis in 4.2%, Anaplasma phagocytophilum in 1.7%, Babesia bovis in 1.6%, Babesia major in 0.2% and Babesia divergens in 0.1%. Complete blood counts showed different degrees of anemia in 363 animals (24.2%) and of these, 169 were RLB-positive for at least one pathogen. Among the ticks that were collected from the cattle, the following species were identified: Rhipicephalus bursa, Ixodes ricinus, Hyalomma marginatum, Boophilus annulatus, Dermacentor marginatus and Haemaphysalis (sulcata, parva, inermis and punctata). The results obtained confirmed the spread of endemic tick-borne pathogens in the regions studied.

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Theileriosis in a Missouri Beef Herd Caused by Theileria buffeli

Cited by 65 publications

References 33 publications

Pakistan’ın Cholistan Çölünde Başıboş Dolaşan Cholistan Sığırlarında Tropikal Theileriosisin Prevalansı ve Kan Değerleri

Pakistan’ın Cholistan Çölünde Başıboş Dolaşan Cholistan Sığırlarında Tropikal Theileriosisin Prevalansı ve Kan Değerleri

Studies on alterations of clinical and hemato-biochemical parameters before and after treatment in calves naturally infected with theileriosis

Retrospective Study of Hemoparasites in Cattle in Southern Italy by Reverse Line Blot Hybridization

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