Studies on Seasonal Dynamics of Ticks of Ogaden Cattle and Individual Variation in Resistance to Ticks in Eastern Ethiopia

Bekele, T.

doi:10.1046/j.1439-0450.2002.00567.x

Cited by 40 publications

(40 citation statements)

References 11 publications

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“…They recorded highest counts of A. variegatum in July and April, which coincide with the rainy months for the areas. Moreover, Hoogstraal (1956), Morel (1980), Petney et al (1987), Yohualashet et al (1995), Mattioli et al (1997), Bekele (2002) and Assefa (2004) observed the seasonal fluctuation of this tick species with a relative rise in numbers during the short and long rains. The life-cycle of this tick species is most closely linked to rainfall.…”

Section: Discussionmentioning

confidence: 96%

Tick resistance of two breeds of cattle in Wolaita Zone, Southern Ethiopia

Sheferaw¹

2017

J. Vet. Med. Anim. Health

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The objective of this study was to evaluate total tick burden and resistance differences of local indigenous breeds and Holstein-crosses (50%). Longitudinal study method was employed to assess the mean monthly half-body regions of total tick burdens. The mean monthly half body regions of total tick count on local indigenous cattle and Holstein-crosses (50%) were 75.2 and 201.7, respectively. The monthly mean half-body region of total tick count on the Holstein-crosses (50%) was significantly (p<0.05) higher than that of the indigenous breed throughout the study months. From 4425 collected adult ticks, Boophilus decoloratus (47.50%), Amblyomma gemma (21.06%), Amblyomma variegatum (18.31%), Amblyomma cohaerens (4.97%), Amblyomma lepidum (3.75%), Rhipicephalus evertsi evertsi (2.87%), Rhipicephalus muhsamae (0.79%) and Rhipicephalus guilhoni (0.75%) were the tick species identified in descending order. Among the tick species identified, seasonal variation was observed in four species, namely: A. variegatum, A. gemma, A. lepidum and R. evertsi evertsi. Animal health extension especially on tick control strategy should be in place in order to improve animal productivity.

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Section: Discussionmentioning

confidence: 96%

Tick resistance of two breeds of cattle in Wolaita Zone, Southern Ethiopia

Sheferaw¹

2017

J. Vet. Med. Anim. Health

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“…According to Bekele (2002), relative abundance of R. decoloratus increases from lowland towards highland. Similar findings have been reported in Metekel Ranch of Ethiopia by Alekaw (1998).…”

Section: Discussionmentioning

confidence: 99%

Abundance and distribution of Ixodid tick species infesting cattle reared under traditional farming systems in Tanzania

Kerario¹,

Muleya²,

Chenyambuga³

et al. 2017

Afr. J. Agric. Res.

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Ticks and tick-borne diseases are serious constraints to livestock production in Tanzania and other sub-Saharan African countries. Despite this, knowledge on the abundan ce of tick species infesting cattle in most parts of Tanzania is insufficient or lacking. This study was conducted to identify species and establish the abundance of ticks infesting cattle in Mara, Singida and Mbeya regions of Tanzania. The ticks were collected from one side of the body, counted and identified, based on morphological characteristics; to species level. The mean tick count per animal was significantly higher in Mara (35.8±4.3, p=0.0001) as compared to Singida (12.9±2.1) and Mbeya (7.0±0.4) regions. Young animals in Mara (24.7±6.0, p=0.0395) and Mbeya (5.4±0.3, p=0.0252) exhibited relatively lower mean tick counts compared to the weaners (Mara = 33.8±6.5, Mbeya = 7.2±0.7) and adult animals (Mara = 46.3±8.4, Mbeya = 7.8±0.7). Seven tick species from three different genera, namely Ambylomma, Hyalomma, Rhipicephalus (including the subgenus Boophilus), were identified. However, only five species (A. lepidum, A. variegatum, R. decoloratus, R. microplus and H. rufipes) were observed in all the three regions. R. appendiculatus and R. evertsi were not found in Mbeya and Mara respectively. The most prevalent species in Mara, Singida and Mbeya were R. appendiculatus (50.5%), A. lepidum (31.2%) and R. evertsi (35.6%), respectively. This study showed the existence of a variety of tick species, most of them being of veterinary importance. Therefore, strategic planning and cost-effective tick control measures should be implemented in order to reduce losses caused by ticks and tick borne diseases in the study area.

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“…It is estimated that an annual loss of 5,000,000 USD is incurred due to the downgrading of hide and skin having been affected by ticks, and approximately 65.5% of the major defects associated with hides in eastern Ethiopia were due to ticks. 9,10 Even though Ethiopia encounters considerable losses due to tick infestations, and existing research has reported the distribution and abundance of tick species across different parts of the country, there are no evidences supporting the prevalence and distribution of hard ticks at the Horo Guduru Animal Breeding and Research Center. Therefore, the main objectives of this research were:…”

Section: Introductionmentioning

confidence: 99%

Prevalence and Identification of Bovine Ixodid Ticks in Horo Guduru Animal Breeding and Research Center, Horo Guduru Wollega Zone, Western Ethiopia

Asefa¹,

Dugassa²,

Kebede³

et al. 2017

Vet Med Open J

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Citation ABSTRACTBackground and Aim: Even though Ethiopia encounters considerable losses due to tick infestations, and existing research has reported the distribution and abundance of tick species across different parts of the country, there are no evidences supporting the prevalence and distribution of hard ticks at the Horo Guduru Animal Breeding and Research Center. Therefore, the main objectives of this research are: to analyze the prevalence of ixodid ticks and identify them in the study area as well as to provide baseline data on the relative distribution of tick species. Materials and Methods: A cross-sectional study was conducted on 409 cattle (305 local breed (Horo breed) and 104 cross breed (Horo breed × Jersey breed) using simple random sampling techniques for identification and determination of prevalence of ticks at the study area. Results: In the present study, the overall prevalence of tick infestation was recorded as 78.23%. Two tick genera were identified with the composition of Ambylomma (51.2%) and Rhipicephalus (48.8%). In the study area, four tick species were identified with their respective prevalence of Rh. (B.) decoloratus (33.8%), A. variegatum (21.3%), Rh. e. evertsi (15%) and A. cohaerens (29.9%). The prevalence of tick infestation was found to be significantly different (p<0.05) between breeds with higher prevalence in local breed (Horo breed) (83.6%) than cross (Horo breed × Jersey) (62.5%). The prevalence of tick infestation among age groups was highly prevalent in adult cattles (79.08%) relative to young (73.3%) cattles. The prevalence of ticks was also highest in medium (81.4%) and lowest in good (73.4%) cattles respectively. Conclusion: The overall prevalence rate of ixodid ticks in the current study area was 78.23%. According to the present finding, the most important tick species that was intensively investigated were A. decolaratus, Rh. evertsi-evertsi, A. varigatum, and A. cohaerence. The study indicated that there was a high burden of ticks in the discussed area.

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Studies on Seasonal Dynamics of Ticks of Ogaden Cattle and Individual Variation in Resistance to Ticks in Eastern Ethiopia

Cited by 40 publications

References 11 publications

Tick resistance of two breeds of cattle in Wolaita Zone, Southern Ethiopia

Tick resistance of two breeds of cattle in Wolaita Zone, Southern Ethiopia

Abundance and distribution of Ixodid tick species infesting cattle reared under traditional farming systems in Tanzania

Prevalence and Identification of Bovine Ixodid Ticks in Horo Guduru Animal Breeding and Research Center, Horo Guduru Wollega Zone, Western Ethiopia

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