The interaction of Trypanosoma congolense and Haemochus contortus infections in trypanotolerant N'Dama cattle

Kaufmann, Johannes; Dwinger, R.H.; Hallebeek, A.; Dijk, Bas van; Pfister, Kurt

doi:10.1016/0304-4017(92)90157-5

Cited by 52 publications

(31 citation statements)

References 11 publications

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“…The findings of the present study also revealed that concurrent infection of T. congolense and Fasciola species is the most prevalent form of co-infection in cattle within study areas. This observation basically agrees with the results of Kaufmann et al, (1992) and Dwinger et al, (1994) who disclosed an increased pathogenicity when helminthosis is superimposed on Trypanosoma infections. Furthermore, in our study marked anemia (lower PCV value) was recorded in animals with mixed infections of trypanosome and helminthosis.…”

Section: Discussionsupporting

confidence: 92%

“…For instance, in acute haemonchosis and fascioliasis, the pathogenic effect of the parasite is often present before eggs appear in the faeces. Furthermore, in the context of trypanosomosis infection superimposed on GI helminthes infection, Kaufmann et al, (1992) and Urquhart et al, (1990) reported a phenomenon of immune-suppression, reduced prepatent period and increased pathogenecity.…”

Section: Introductionmentioning

confidence: 99%

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Bovine trypanosomosis and gastrointestinal helminthosis in settlement villages of Bedele district, South-western Ethiopia

Yohannes¹,

Birasa²,

Damena³

et al. 2014

Ethiop. Vet. J.

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This cross-sectional study was carried out from October 2011 to March 2012 to assess the concurrent infections of bovine trypanosomosis with gastrointestinal (GI) helminthes in Peasant Associations of Bedele district settlement areas located in Illubabor Zone, Southwestern part of Ethiopia. A total of 500 randomly selected cattle were examined using Buffy Coat Technique and coprological examinations. Faecal examination was done by sedimentation and flotation techniques following the standard procedures to identify eggs of parasitic helminthes. Those faecal samples that were positive for flotation technique were subjected to eggs per gram (EPG) count using Mc Master egg counting technique and the degree of infestation was categorized as light, moderate and severe. Out of total cattle examined, 21(4.2%) were positive for Trypanosoma congolense and 321(64.2%) were found to harbor one or more gastrointestinal helminthes infection. Helminthes identified were Fasciola species (51.4%), paramphistomum species (18.7%), the protozoan Eimeria species (6.2%), Trichuris species (6.85%), Trichostrongyles (11 %) and mixed infections (6%). The overall mean PCV value recorded was 26.7±3.9 and it was 26.8±3.9 in trypanosome negative animals and 22.9±3.3 in trypanosome positive animals. The overall mean EPG recorded was 172±99.6. Among 21 cattle found positive for T. congolense, 18 (85.7%) were concurrently infected with (GI) helminthes particularly Fasciolosis (38.1%) and statistically there was significant association (P < 0.05) between trypanososmosis and GI helminthes infection. Age and sex of sampled cattle were not found to influence GI helminthes prevalence (p>0.05). Infection with T. congolense and Fasciola species is the most prevalent form of co-infection in cattle within study areas. In conclusion, any attempts to control or prevent trypanosomosis or GI helminthes infection through different management approaches, need to address the possibility of concurrent infections especially in trypanosomosis endemic areas to save the losses in advance.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Bovine trypanosomosis and gastrointestinal helminthosis in settlement villages of Bedele district, South-western Ethiopia

Yohannes¹,

Birasa²,

Damena³

et al. 2014

Ethiop. Vet. J.

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“…Kaufmann et al [10] demonstrated a strong pathologic synergism between Trypanosoma congolense and Haemonchus spp. in N'Dama cattle, which emphasises the importance of gastrointestinal nematode control for the maintenance of trypanotolerance in this breed.…”

Section: Introductionmentioning

confidence: 99%

Effect of strategic gastrointestinal nematode control on faecal egg count in traditional west African cattle

Zinsstag

Ankers²,

Njie

et al. 2000

Vet. Res.

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-This paper reports on the effect of strategic anthelmintic treatments and other determinants on faecal egg counts (FEC) of Trichostrongyles in N'Dama cattle of a west African village. Initially, 527 animals from 13 private N'Dama cattle herds were monitored in a longitudinal study from October 1989 to December 1994. Each herd was stratified by age and animals were sequentially allocated to two groups with similar age distributions. One group received a single anthelmintic treatment of fenbendazole (7.5 mg/kg BW), in October 1989 (n = 250), whereas the other group remained untreated (n = 277) throughout the study. In the next rainy season (June to October), the treated animals were treated twice (in July and September). The same treatment schedule was used in the subsequent rainy seasons until December 1994. Biannual anthelmintic treatments decreased the level of FEC between 31% (late dry season) and 57% (rainy season), when compared to untreated controls. The highest levels of FEC were found during the rainy season from June to October. FEC levels decreased until 4 years of age, after which they remained on a constant low level. The variability of returns to anthelmintic treatments between herds did not seem to be influenced by FEC at the herd level. The financial evaluation of anthelmintic interventions cannot be predicted from FEC and must necessarily rely on the direct monitoring of livestock productivity parameters.gastrointestinal nematodes / N'Dama cattle / faecal egg count / strategic control / fenbendazole Vet. Res. 31 (2000) 259-266 259

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“…However, these studies were often conducted under conditions that included concurrent infection with trypanosomes, and trypanosomiasis has been shown to predispose animals to infection with GIN (Kaufmann et al, 1992;Goosens et al, 1997). Djallonké sheep, and other local breeds of sheep, goats and cattle in the region, have documented levels of tolerance to trypanosomes (Food and Agriculture Organization of the United Nations, 1980), and reports of resistance to GIN must therefore be interpreted in the context of associated infection with, or freedom from, trypanosomes.…”

Section: Discussionmentioning

confidence: 99%

Resistance to gastrointestinal parasite infection in Djallonké sheep

Traoré

Notter

Soudré

et al. 2017

Animal

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Gastrointestinal parasitism places serious constraints on small ruminant production. The situation has been exacerbated by development of drug resistance in many parasite populations, leading to interest in identification of animals with genetically mediated resistance or tolerance to nematode infections. This study assessed the response to natural infection with gastrointestinal nematodes (GIN) in Djallonké sheep during the rainy season in the Sudan-Guinea Savannah region of Burkina Faso. Haemonchus contortus is the most prevalent GIN at this site and time. Djallonké lambs ( n = 434) were sampled from 40 households and evaluated at a common location in southern Burkina Faso. Lambs were dewormed with levamisole at 2 to 6 months of age and returned to infected pastures. Fecal egg counts (FEC), packed cell volumes (PCV), and FAffa Malan CHArt (FAMACHA © ) scores were determined 28 and 35 days after deworming. Lamb mortality was monitored throughout the experiment. Least-squares means for BW increased from 13.8 ± 0.2 kg at 28 days to 14.0 ± 0.2 kg at 35 days ( P < 0.01). Simple means and medians for FEC were 615 and 100, respectively, at 28 days and 850 and 175, respectively, at 35 days. The FEC exhibited strong right skewness. Following logarithmic transformation and back-transformation of resulting least-squares means to the original scale, FEC were higher ( P < 0.01) for males (208 ± 27) than females (122 ± 10). Least-squares means for PCV decreased ( P < 0.001) from 28 (36.3 ± 0.5%) to 35 days (33.7 ± 0.5%), and were higher ( P < 0.01) for females (36.0 ± 0.4%) than males (33.9 ± 0.7%). Correlations (r) between repeated measurements of BW, FEC, PCV and FAMACHA scores at 28 and 35 days were all positive ( P < 0.001). The correlation between FAMACHA scores and PCV was negative at 28 ( r = − 0.14) and 35 days ( r = − 0.18) ( P < 0.001). This study revealed that BW was an easily measured predictor of the ability of the lamb to resist infection with GIN and maintain PCV, and confirmed that FAMACHA scores are useful indicators of differences in FEC. Approximately 40% of female and 30% of male lambs did not show detectable levels of infection (i.e. FEC = 0) under field conditions. The great variability that was observed in FEC and PCV suggests potential to use Djallonké sheep in breeding programs to enhance resistance to GIN.

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The interaction of Trypanosoma congolense and Haemochus contortus infections in trypanotolerant N'Dama cattle

Cited by 52 publications

References 11 publications

Bovine trypanosomosis and gastrointestinal helminthosis in settlement villages of Bedele district, South-western Ethiopia

Bovine trypanosomosis and gastrointestinal helminthosis in settlement villages of Bedele district, South-western Ethiopia

Effect of strategic gastrointestinal nematode control on faecal egg count in traditional west African cattle

Resistance to gastrointestinal parasite infection in Djallonké sheep

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