alexa Major Dermatological Disorders of Carthorses in Selected Towns of Central Ethiopia | Open Access Journals
ISSN: 2157-7579
Journal of Veterinary Science & Technology
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Major Dermatological Disorders of Carthorses in Selected Towns of Central Ethiopia

Yidnekachew Tadesse2 and Fanos Tadesse Woldemariyam1*

1College of Veterinary Medicine and Agriculture, Addis Ababa University, Addis Ababa, Ethiopia

2Horo Guduru Zone Livestock and Fisheries Office, Ethiopia

*Corresponding Author:
Fanos Tadesse Woldemariyam
College of Veterinary Medicine and Agriculture
Addis Ababa University, Addis Ababa, Ethiopia
Tel: +251912828253
E-mail: [email protected]

Received Date: December 26, 2016 Accepted Date: January 20, 2017 Published Date:January 25, 2017

Citation: Tadesse Y, Woldemariyam FT (2017) Major Dermatological Disorders of Carthorses in Selected Towns of Central Ethiopia. J Vet Sci Technol 8: 423. doi: 10.4172/2157-7579.1000423

Copyright: © 2017 Tadesse Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

Salmonella have been found to be the major food borne disease in the world with a serious public health problem. The current study was carried out to detect and to determine the prevalence and antibiotic susceptibility of Salmonella isolated from fresh raw chicken eggs collected at Haramaya University Poultry Farm in Eastern Ethiopia. Among the total 384 chicken eggs, Salmonella spp. was detected from 2.9% (11/384) of egg samples using culture technique and was confirmed by biochemical test, nine Salmonella spp. (2.4%) were detected from egg shell and two (0.5%) from egg contents; predominantly occurred in floor house system. The prevalence of Salmonella in eggs on the bases of chicken breed sources was 2.9%, 3.8% and 2% for Bovans, Fayoumi and White leg horn, respectively. The prevalence difference did not show statistical significance (P>0.05) between the rate of detecting Salmonella spp. among the egg shell and egg contents, and similarly, non-significant analytical situation was observed in eggs sampled from different chicken breeds. Among the sample sources, egg samples examined from cage and floor house were found Salmonella positive with the prevalence of 2.3% and 3.3%, respectively. However, there was no statistically significant difference (P>0.05) in the prevalence of Salmonella among the two house systems. All identified isolates were tested for susceptibility to a six commonly used antimicrobials by disk diffusion technique. Out of the 11 isolates tested 8(72.7%) were resistant to one or more of the tested antimicrobials. The most common resistance observed was to tetracycline (72.7%), ampicillin (72.7%) and amoxicillin (63.6%). However, spectinomycin, kanamycin and chloramphenicol were effective against most of the Salmonella isolates.

Keywords

Carthorses; Central Ethiopia; Prevalence; Skin disorder

Introduction

There are about 115.2 million domestic equids (horses, donkey and mule) in the world of which 44.3 million are donkeys, 57.6 million horses and 13.3 million mules. Ethiopia shares approximately half of Africa’s equine population; according to UN Food and Agriculture Organization there are over 7 million donkeys, mules and horses in Ethiopia, including 1.9 million horses [1].

In a country where there is less developed transport and communication services and road network insufficiently developed, the natural choice rests on the use of human labor and pack animals as a mode of transport, as it has been the case in some parts of the world. This remains true in the Ethiopian context. The mountainous nature of the land has made the travel time consuming and difficult, which has resulted the back of animals to remain as the only means of transport for Ethiopian terrain for centuries [2]. Horses have a prominent position in the agricultural systems as draft, pack and riding animals. In many towns of Ethiopia horse pulled carts are used as a major means of transportation and as a source of income for cart owners [3,4]. In other words, the use of equines in door to door transport service provides urban dwellers with the opportunity of income generation [5,6].

Despite their invaluable contributions, equines in Ethiopia are the most neglected animals, accorded low social status, particularly the male working equines. Horses involved in pulling carts often work continuously for 6 to 7 hours per day, carrying 3 to 4 persons (195-260 kg) in single trip [7]. They are provided with wheat bran and cereal straw by moistening with water and grasses where season provide on access during the night and allowed to graze pasture and road side in the town fringe during the day. Feed shortage and disease are the major constraints to the productivity and work performance of carthorses.

They are brutally treated, made to work overtime without adequate feed or health care. The increasing human population, demand for transport of goods to and from far, remote areas, and construction activities around the town are making cart horses high demanded animal [8].

There are several causes of health problem in carthorses which are actively participating in the transport sector. The causes of this health problem emanates from infectious diseases, parasite infestation, mechanical damage, lack of adequate feed and some others. So the outcome that arises from these causes in combination or alone could affect the entire body systems or a single tissue, organ or system which has great impact on the performance expected from the animal. Of these dermatological (skin) problems is among the major ones.

Skin is the largest organ of the body which serves as an inclosing barrier and providing environmental protection, regulating temperature, providing pigment and vitamin D, sensory perception, etc. Anatomically it consists of epidermis, basement membrane zone, dermis, appendageal system and subcutaneous muscles and fat. The skin is affected by a wide variety of diseases and reacts to disease in a limited number of ways. Thus, many diseases can appear similar and cause similar presenting signs yet have vastly different etiologies. Some skin diseases have predictable clinical features, whereas others can have a variety clinical forms.

In Ethiopia, though few reports indicated that external injuries and epizootic lymphangitis (Endebu, 1996; SPANA, 2003) are major health problems of working horses, there have been no formal researches conducted to elucidate general dermatological disorders of carthorses. Therefore, the objectives of this study were:

• To provide base line information concerning the major skin disorders of carthorses in selected districts of Ethiopia.

• To indicate factors influencing the occurrence and distribution of skin disorders of carthorses.

Materials and Methods

Study area

The study was conducted in three selected towns of central Ethiopia namely Debre Berhan, Debre Zeit, and Adama. These places were previously selected as working area by the mobile clinic of the society for the protection of Animals Abroad (SPANA) Ethiopia based on their high equine population, poor welfare condition and low economic status of carthorse owners. These areas were a working site of SPANA Ethiopia and believed to be vaccinated and dewormed.

Debre Brehan: It is a town located in Amhara Regional State, in the central highlands of Ethiopia, 130 km north east of Addis Ababa, at 9°36’ N and 39°38’ E, with an altitude of 2780 meter above sea level. The average annual rainfall is 950 mm and the average monthly minimum and maximum air temperature ranges from 17.6°C in August to 22.5°C in June. The mean relative humidity is 68.2%. There are 714 carthorses and 357 carts in the town [9].

Debre Zeit: The town is 45 km south east of Addis Ababa, located 9°E at an altitude of 1850 m above sea level. The rainfall is bimodal. It receives the annual rainfall of 1151.6 mm with a mean maximum and minimum temperature of 30.7°C and 8.5°C respectively, and a mean relative humidity of 61.3% [10]. There are 1170 carthorses and 585 carts in the town [11].

Adama: The town is located in Eastern shoa zone of Oromia Regional State, 100 km southeast of Addis Ababa at 8°32’N and 39°17’E. It has an altitude of 1622 meter above sea level in the Great Rift Valley and receives annual rainfall ranging from 400 mm to 800 mm and a temperature of 13.9°C [10]. There are 1579 carthorses and 790 carts in the town [12].

In all the three sites the means of transportation include vehicle and horse drawn carts. Horse drawn carts are preferably used on roads inaccessible to taxi and because of relatively low charges. However, there is great competition between horse drawn carts and Bajaj (a three wheel motor bike).

Target population and sampling strategy

The total population of carthorses in the present study areas was 3423. Simple random sampling method was employed on each study sites irrespective of owner’s primary complaint, age, body condition score, coat color

and/or any other parameters of horses. Discussion was made with the owners to know about the causes of dermatological disorder in their respective areas.

Sample size determination

The sample size was determined according to Thrusfield [13]. Simple random sampling for an infinite population with 95% confidence level, 5% derived absolute precision and 50% expected prevalence, since there was no previous information on the prevalence of major skin disorders in present study areas. Accordingly, 74 horses in Debre Brehan, 123 horses in Debre Zeit and 163 horses in Adama were selected.

equation

Study methodology

Physical examination of skin: Physical examination of skin included inspection at a distance to get general idea of the distribution and the extent of the disease. Then the skin was closely examined by sight and touch. Examination was undertaken from cranial to caudal body parts; from the head region to the tail including mucous membranes and mucoutaneous junctions. Age, body condition score, skin elasticity, skin thickness, type of hair coat, type and cause of dermatological disorders and body sites affected were recorded for all horses in each site.

Laboratory examination: Laboratory examination was employed where infectious and parasitic disorders were suspected during physical examination. Samples were taken by skin scrapings, hair plucking, collection of crusts and pus material from abscessed parts. Then, the samples were labeled and laboratory results for isolation of causative agents in cases where necessary were recorded.

Data analysis: The collected data were entered to computer using excel soft ware data. Data were listed in a format i.e., rows for horses identification number and sites of study, and columns for physical and laboratory examination results. SPSS 13.0 for windows was used to analyze the descriptive statistics. In the analysis confidence level was held at 95% and P<0.05 was set for significance.

Results

Physical and laboratory examination

The overall prevalence rate of dermatological disorder in the study sites was 93.3% (Table 1). Up on physical and laboratory examination wounds (67.7%), infectious diseases (10%), parasitic infestations (7.2%), skin tumor (2.5%) and other disorders (6.4%) were found among the major dermatological disorder of horses in the study site (Table 2). About 82.6% of the horses had dermatological disorders in more than one site (Table 3). There was no statistically significant difference in the prevalence rate and type of disorders identified with respect to the study sites as well as the body parts affected by dermatological disorder (p>0.05).

Study site Count Percentage
DebreBrehan 67 90.50%
DebreZeit 117 95.10%
Adama 152 93.30%
Total 336 93.30%

Table 1: Overall prevalence of dermatological disorder in study sites.

Dermatological disorders Percentage
Wounds 242 (67.7%)
Infectious diseases 36 (10%)
Parasitic infestations 26 (7.2%)
Skin tumor 9 (2.5%)
Other skin disorders 23 (6.4%)
Total 360 (100%)

Table 2: Type of dermatological disorders identified in the study sites.

Study site Number of body sites affected
  One body site (%) Two body sites (%) Multiple body sites (%) Total (%)
Debre Brehan 16(23.88%) 23(34.32%) 28(41.79%) 67(19 .94%)
Debre Ziet 22(18.8%) 32(27.35%) 63(53.84%) 117(34.82%)
Adama 23(15.03%) 36(23.68%) 93(61.18%) 152(45.23%)
Total 61(18.15%) 91(27.08%) 184(54.76%) 336(100%)

Table 3: Distribution of dermatological disorders on body parts.

The type of wounds identified were Laceration, erosion, puncture, avulsion, mixed and complicated wound types where Laceration and puncture takes about 60% of the share of wounds type in the three study sites (Table 4). The major causes of wounds were improper harnessing, shoeing, beating, road accidents and multifactorial causes (a combination of improper harnessing, shoeing, beating and road accident) (Figure 1).

veterinary-science-technology-wounds-identified

Figure 1: Major causes of wounds identified in the study sites.

Study site

Wound type

Erosion Puncture Laceration Avulsion Mixed Complicated Total
Debre- Berhan 0(0.0%) 7(15.9%) 17(38.6%) 1(2.3%) 10(22.7) 9(20.5%) 44(100%)
Debre- Zeit 1(1.1%) 29(31.87%) 28(30.8%) 4(4.4%) 15(16.48) 14(15.4%) 91(100%)
Adama 5(4.67%) 15(14.02%) 47(43.3%) 4(3.47%) 20(18.69%) 16(14.95%) 107(100%)
Total 6(2.48%) 51(21.07%) 92(38%)  9(3.72%) 45(18.6%) 39(16.1%) 242(100%)

Table 4: Type of wounds identified in the study sites.

Discussion

In the present study it is showed that the extremely high prevalence different types of dermatological disorders in carthorses with multiple body part appearance taking the largest share. The overall prevalence dermatological disorder in carthorses was found to be 93.3% which is in agreement with the finding of Biffa and Woldemeskel; Demsasha and Denka in different parts of Ethiopia [7,14]. The major dermatological disorders identified were wounds, infections skin diseases, tumor and ecto-parasites. Of these disorders wounds took the largest share (67.7%) of the dermatological disorders in the study site. This finding clearly indicated the magnitude of the problem in working horses. These dermatological disorders inevitably decrease the performance and effective working life of horses. This is comparable with the findings of Tamirat et al. (58.6%) in Wolaita Soddo and Abreha et al (30.3%) in Tigray which showed wounds are the major dermatological problems followed by infectious skin diseases, tumor and ecto-parasites [14,16].

The majority of the wounds identified were severe type where a wide area of the skin were removed. Most of these wound that affect the skin of the horses were due to mis-management and ill treatment of horses where poorly fitted harness with rigid and rough edges, improper shoeing and beating were the prevailing mal-practice in all the study sites. This is in agreement with the findings of Tamirat et al. and Abreha et al. in wolaita and Tigray, Ethiopa [15,16]. Our finding agrees with explanation of Pearson and her colleagues who stated that harness related problems were raised from incorrect size, inappropriate fitness, too narrow or too thin, made of unsuitable synthetic materials, poor paddle, poor design and synthetic rope to tried be fitted to the animal.

The dermatological disorders were found in one, two or multiple body parts of the horses in three study areas where the multiple body part occurrence was in higher proportion (54.76%) similar to our finding Biffa and Woldemeskel also found the multiple occurrence of wounds in different equine species.

Conclusions and Recommendation

The present study revealed higher prevalence of dermatological disorders in cart horses of the study sites. The major disorders were wounds, ecto-parasites, infectious skin diseases and tumors. Most of the wounds were afflicted by improper management of working horses. Based on the above concluding remark the following points are forwarded:

• There should be better or modern utilization harnessing system in carthorses

• Appropriate management system should develop in order to avoid the occurrence of wound.

• Develop regular deworming programme towards the control of ectoparasites.

• The infectious cases should be objectively researched.

• Develop better skill or awareness of animal welfare towards cart owners and drivers.

References

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