Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia

Sinshaw, A.; Abebe, Girma; Desquesnes, Marc; Yoni, Wilfrid

doi:10.1016/j.vetpar.2006.06.032

Cited by 90 publications

(73 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the mean PCV of parasetemic animals (22.94 ± 2.70%) was significantly lower (p=0.000) than the aparastiemic animals (27.24 ± 5.02%) ( Table 4). These lowered PCV of parasitemic animals was previously reported in similar studies elsewhere [21,30,33,34]. The finding of aparasitemic animals with mean PCV values of ≤ 24% might be due to the inadequacy of the technique used for detection or delayed recovery of anaemic situation after recent treatment with trypannocidal drugs or factors other than trypanosomosis such as compound effects of poor nutrition and blood feeding helminth infections such as haemonchosis and bunostomosis [35,36].…”

Section: Hematological Examinationsupporting

confidence: 74%

Prevalence of Bovine Trypanosomosis in Dembecha Woreda Amhara Region, Northwest Ethiopia

Mekonnen¹,

Eshetu²,

Zeryehun³

2017

J Vet Sci Technol

View full text Add to dashboard Cite

This study was conducted in Dembecha Woreda of Amhara region, Northwest Ethiopia. The study was carried out on 384 indigenous cattle kept in mixed crop-livestock production system to estimate the prevalence of bovine trypanosomosis and associated risk factors. The study employed parasitological survey (buffy coat examination) and hematological study (packed cell volume [PCV] and thin blood smear). In the present study, the overall prevalence of trypanosomosis was 8.6% (33/384). Trypanosoma congolense (54.54%) and Trypanosome vivax (45.45%) were the only two species of Trypanosomas encountered in the study area. Among the risk factors, sex and age were found to have no significant association with the prevalence of trypanosomosis (p>0.05), but body condition and coat color of animals were found to have a significant association (p<0.05) with prevalence of trypanosomosis in the studied animals. In this study infected animals were with mean PCV value of 22.94 ± 2.70% which is significantly lower (p<0.05) than that of the non-infected animals (27.24 ± 5.02%). The study concluded that Trypanosomosis being an economically important disease in cattle the 8.6% prevalence entail that more attention should be given to be adapting on integrated disease control strategy including the vector as well as the parasites.

show abstract

Section: Hematological Examinationsupporting

confidence: 74%

Prevalence of Bovine Trypanosomosis in Dembecha Woreda Amhara Region, Northwest Ethiopia

Mekonnen¹,

Eshetu²,

Zeryehun³

2017

J Vet Sci Technol

View full text Add to dashboard Cite

show abstract

“…Bekele et al (2010) recently reported the prevalence of 70, 20 and 8% in cattle for T. congolense, T. vivax and T. brucei, respectively in Southern Rift Valley and also Abiy (2002) reported the prevalence of Trypanosoma species as T. congolense 58.75% and T. vivax 33.75%. In contrast to this, Sinshaw et al (2006) indicated a prevalence of trypanosomosis ranging from 4 to 9.6% due to T. vivax in three highland districts bordering Lake Tana. The dominance of T. congolense infection in cattle may be due to its transmission only by tsetse flies and the high number of seroderms of T. congolense as compared to T. vivax and the development of better immune response to T. vivax by the infected animal (Leak, 1999).…”

Section: Discussioncontrasting

confidence: 60%

A study on prevalence of bovine trypanosomosis in selected areas of Konta Special Woreda, Southern Ethiopia

Abera¹,

Sibhat²,

Tonamo³

2016

Afr. J. Agric. Res.

View full text Add to dashboard Cite

A cross-sectional study was conducted from November 2010 to March 2011 to determine the prevalence of bovine trypanosomosis, to identify the species of trypanosomes in the study area and to assess the community awareness regarding the effect of trypanosomosis and control methods in selected areas of Konta Special Woreda of Southern Nation Nationalities and Peoples Regional States. Thirty households were interviewed using prepared questionnaire format during the study period. In the parasitological survey, blood samples of 300 cattle were examined using a buffy coat technique and thin smear under Gimsa stain. The packed cell volume (PCV) value of each animal was also measured using hematocrit reader. The overall prevalence of trypanosomosis in the study area was found to be 21.33%. There was no significant difference in prevalence between the study areas. The dominant trypanosome species found in the area were Trypanosoma congolense (64%) followed by Trypanosoma vivax (23%) and Trypanosoma brucei (13%). The prevalence of 44.29, 14.13 and 15.22% was observed for animals with poor, medium and good body conditions, respectively and there was statistically significant (p<0.05) difference between animals with different body condition. There was no difference in prevalence between the different age groups of cattle. The mean PCV value (%) of parasitaemic and aparasitaemic animals during the study period were 19.42 and 27.64 with a statistically significance (p<0.05) difference between the two groups. The study also demonstrated variations in the prevalent between both sexes which was statistically significant (p<0.05). It was concluded that the present work evidenced that trypanosomosis has continued to pose a considerable threat to cattle production in the study area warranting an integrated control and prevention to safeguard cattle production and productivity.

show abstract

“…The Prevalence among districts and Peasant associations in this study could be attributed to the tsetse fly and/or other biting flies' population and type present in each peasant association which is dependent on micro climate, animal heard density, distance between herds and other various factors [18].…”

Section: Discussionmentioning

confidence: 69%

Prevalence of Bovine Trypanosomosis and Apparent Density of Tsetse and Other Biting Flies in Mandura District, Northwest Ethiopia

Damena¹

2015

J Veterinar Sci Technol

View full text Add to dashboard Cite

A cross-sectional study was conducted from May to June 2014 to determine the prevalence of bovine trypanosomosis and the apparent density of tsetse and other biting flies in four peasant associations of Mandura district. For the prevalence study, dark phase contrast buffy coat examination and Giemsa stained thin blood smears were used. Whereas for the entomological survey and apparent density of flies, traps were deployed. The entomological survey indicated that Glossina tachnoides was the only tsetse fly species caught in the study area along with other biting flies like Haematopota, Stomoxys and Tabanus. Apparent tsetse flies density of 0.06 flies/trap/ day was recorded in the district. For the prevalence study, out of a total of 405 cattle examined, 22 (5.43%) were found infected with trypanosomes. Highest prevalence was recorded in cattle with poor body condition (7.06%) followed by medium (5.20%) and god (3.92%). This study showed no significant difference (P>0.05) in trypanosomosis infection rate among peasant associations, age, body condition and sex of the animal. The overall mean PCV value of examined cattle is 29.29 ± 4.813 ‫;94.221=|‪t‬|(‬ df=404; P=0.00). The mean PCV of non infected cattle was slightly higher (29.30%) than that of infected animals (29.27%). Among the species of trypanosomes isolated, Trypanosoma vivax was identified to be the major causes of trypanosomosis in the study area accounting for 81.82% of the total infections observed followed by Trypanosoma congolense (18.18%). Taken as a whole, the present work evidenced that tsetse and trypanosomosis has continued to pose a considerable threat to cattle of the study area warranting an integrated control to safeguard cattle production and productivity.

show abstract

Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia

Cited by 90 publications

References 24 publications

Prevalence of Bovine Trypanosomosis in Dembecha Woreda Amhara Region, Northwest Ethiopia

Prevalence of Bovine Trypanosomosis in Dembecha Woreda Amhara Region, Northwest Ethiopia

A study on prevalence of bovine trypanosomosis in selected areas of Konta Special Woreda, Southern Ethiopia

Prevalence of Bovine Trypanosomosis and Apparent Density of Tsetse and Other Biting Flies in Mandura District, Northwest Ethiopia

Contact Info

Product

Resources

About