Trypanosomiasis challenge estimation using the diminazene aceturate (Berenil) index in Zebu in Gabon

Cossic, Brieuc; Adjahoutonon, Brice; Gloaguen, Pierre; Dibanganga, Gui Lov; Maganga, Gaël Darren; Leroy, Pascal; MacLeod, Ewan T.; Picozzi, Kim

doi:10.1007/s11250-017-1239-2

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…Additionally, an earlier survey conducted in cattle maintained under traditional management system in 8 villages in Hawagelan district, western Ethiopia ( Bekele & Nasir, 2011 ) revealed that the mean PCV of trypanosome-infected animals was significantly lower than that of non-infected animals. Lower herd average PCVs for trypanosome-positive cattle compared to trypanosome-negative cattle have also been reported in Ankole cattle in Uganda ( Waiswa & Katunguka-Rwakishaya, 2004 ), Angoni cattle in Zambia ( Marcotty et al , 2008 ), Doayo and Zebu White Fulani cattle in Cameroun ( Achukwi & Musongong, 2009 ) and Zebu cattle in Gabon ( Cossic et al , 2017 ). In Nigeria, Ohaeri & Eluwa (2011) observed that in addition to cattle, other domestic ruminants that were naturally infected with trypanosomes had significantly lower ( p < 0.05) PCV and RBC counts compared to uninfected animals.…”

Section: Discussionmentioning

confidence: 80%

Haematology of N’Dama and West African Shorthorn cattle herds under natural Trypanosoma vivax challenge in Ghana

et al. 2018

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Background: Animal trypanosomosis is a major cause of economic loss in livestock production in Africa. A suggested control measure is to use breeds with traits of trypanotolerance. The study examines the effect of natural Trypanosoma vivax challenge on haematological parameters in two trypanotolerant cattle [N’Dama and West African Shorthorn (WASH)] herds. Methods: Trypanosoma vivax-specific primers were used to diagnose T. vivax infection in an N’Dama herd at Cape Coast in southern Ghana and a WASH herd at Chegbani in northern Ghana from May to July 2011 in a cross-sectional study. Levels of haematological parameters comprising packed cell volume (PCV), haemoglobin (Hb) concentration and red blood cell (RBC) and total white blood cell (TWBC) counts; differential WBC counts (neutrophils, lymphocytes, eosinophils, monocytes and basophils); and RBC indices of mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH) and mean corpuscular haemoglobin concentration (MCHC) were determined in blood samples and then compared between infected and uninfected cattle. Results: We found that haematological indices for infected and uninfected animals in both breeds were within the normal range. However, the mean PCV values for T. vivax-infected WASH and N’Dama were lower in infected compared to uninfected animals. The difference was significant ( p< 0.05) in N’Dama but not in WASH. Conclusion: Despite the presence of infection by T. vivax, N’Dama and WASH cattle maintained their haematological parameters within acceptable normal ranges, which confirms their trypanotolerant trait. This highlights the need for low-input traditional African farmers in medium, high and severe tsetse challenge areas to be educated on the advantages of N’Dama and WASH breeds to increase their utilization in integrated tsetse and trypanosomosis control programmes.

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Section: Discussionmentioning

confidence: 80%

Haematology of N’Dama and West African Shorthorn cattle herds under natural Trypanosoma vivax challenge in Ghana

et al. 2018

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“…Additionally, an earlier survey conducted in cattle maintained under traditional management system in 8 villages in Hawagelan district, western Ethiopia ( Bekele & Nasir, 2011) revealed that the mean PCV of trypanosome-infected animals was significantly lower than that of non-infected animals. Lower herd average PCVs for trypanosome-positive cattle compared to trypanosome-negative cattle have also been reported in Ankole cattle in Uganda ( Waiswa & Katunguka-Rwakishaya, 2004), Angoni cattle in Zambia ( Marcotty et al , 2008), Doayo and Zebu White Fulani cattle in Cameroun ( Achukwi & Musongong, 2009) and Zebu cattle in Gabon ( Cossic et al , 2017). In Nigeria, Ohaeri & Eluwa (2011) observed that in addition to cattle, other domestic ruminants that were naturally infected with trypanosomes had significantly lower ( p < 0.05) PCV and RBC counts compared to uninfected animals.…”

Section: Discussionmentioning

confidence: 80%

Haematology of N’Dama and West African Short Horn cattle herds under natural Trypanosoma vivax challenge in Ghana

et al. 2018

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Animal trypanosomosis is a major cause of economic loss in Background: livestock production in Africa. A suggested control measure is to use breeds with traits of trypanotolerance. The study examines the effect of natural challenge on haematological parameters in two Trypanosoma vivax trypanotolerant cattle [N'Dama and West African Short Horn (WASH)] herds.-specific primers were used to diagnose infection in Methods: T. vivax T. vivax an N'Dama herd at Cape Coast in southern Ghana and a WASH herd at Chegbani in northern Ghana from May to July 2011 in a cross-sectional study. Levels of haematological parameters comprising packed cell volume (PCV), haemoglobin (Hb) concentration and total red blood cell (RBC) and white blood cell (WBC) counts; differential WBC counts (neutrophils, lymphocytes, eosinophils, monocytes and basophils); and RBC indices of mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH) and mean corpuscular haemoglobin concentration (MCHC) were determined in blood samples and then compared between infected and uninfected cattle.We found that haematological indices for infected and uninfected Results: animals in both breeds were within the normal range. However, the mean PCV values for -infected WASH and N'Dama were lower in infected T. vivax compared to uninfected animals. The difference was significant ( < 0.05) in p N'Dama but not in WASH. The RBC indices were higher in infected N'Dama compared to infected WASH with a significant difference in total RBC ( < p 0.05).We conclude from our findings that despite the presence of Conclusion: infection by , N'Dama and WASH cattle maintained their T. vivax haematological parameters within acceptable normal ranges, and this underscores the need for routine diagnosis and treatment so that such trypanotolerant cattle do not serve as potential reservoirs of trypanosome parasites.

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“…In Nigeria, domestic ruminants that were naturally infected with trypanosomes had significantly lower (p<0.05) PCV and RBC counts compared to uninfected animals [36]. Lower herd average PCVs for trypanosomepositive cattle compared to trypanosome-negative cattle have also been reported from Ghana [37], Zambia [32], Cameroon [38] and Gabon [39].…”

Section: Discussionmentioning

confidence: 99%

The Prevalence of Bovine Trypanosomiasis in JabiTehnan District of Amhara Regional State, Ethiopia

Wondie

2018

IJCSMB

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Tsetse flies in Ethiopia are confined to western and southwestern parts of the country between 33°C and 38°C E longitude and 5°C and 12°C N latitude. It is estimated to cover an area of 140, 000, 220, 000 km2 [7]. Tsetse infested areas follow the major river systems; namely, Abay (Blue Nile), Baro, Akobo, Didessa, Ghibe and Omo river systems [8]. Five species of Glossina (Glossina morsitans submorsitans, G. pallidipes, G. tachinozdes, G.f. fuscipes and G. longipennis) have been recorded in Ethiopia [3]. According to National Tsetse and Trypanosomosis Investigation and Control Center [7], tsetse transmitted animal trypanosomosis still remains as one of the largest causes of livestock production losses in Ethiopia. The effects of trypanosomosis is not only the direct losses resulting from mortality, morbidity, infertility of the Abstract Cross sectional study was conducted in Jabi Tehnan District of West Gojjam Administrative Zone of Amhara Regional State, Ethiopia to determine the prevalence of bovine trypanosomiasis. In the parasitological survey, blood samples of 164 cattle were examined using a buffy coat technique. The Packed Cell Volume (PVC) value of each animal was also measured using hematocrit reader. The overall prevalence of trypanosomiasis was found to be 15.24% and it consists of 9.76% and 20.73% in Adankegne and Ergib peasants' association, respectively (X 2 =5.783, p=0.056). The most positive cases were due to Trypanosoma congolense (T. congolense ) (80%) followed by Trypanosoma vivax (T. vivax) (20%). The mean(PCV) values of parasitaemic and aparasitaemic animals during the study period were 20.75% and 25.07%, respectively. The variation in mean PCV values were statistically significant (p=0.01). The study also demonstrated statistically significant (X2=13.886, p=0.001) variations in prevalence between sexes of cattle, which were 10.67% and 19.1% in female and male animals, respectively. The present prevalent study generated valuable information on the epidemiology of bovine trypanosomosis in the study area and revealed that trypanosomosis was an important disease affecting the livestock production.

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Trypanosomiasis challenge estimation using the diminazene aceturate (Berenil) index in Zebu in Gabon

Cited by 9 publications

References 18 publications

Haematology of N’Dama and West African Shorthorn cattle herds under natural Trypanosoma vivax challenge in Ghana

Haematology of N’Dama and West African Shorthorn cattle herds under natural Trypanosoma vivax challenge in Ghana

Haematology of N’Dama and West African Short Horn cattle herds under natural Trypanosoma vivax challenge in Ghana

The Prevalence of Bovine Trypanosomiasis in JabiTehnan District of Amhara Regional State, Ethiopia

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