Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Seasonal Prevalence of Arthropoda and Helminth Parasites in Sheep (ovis Aries)

Tania Yeasmin
Parasitology Laboratory, Department of Zoology, University of Dhaka, Dhaka-1000, Bangladesh.

Hamida Khanum
Parasitology Laboratory, Department of Zoology, University of Dhaka, Dhaka-1000, Bangladesh.

Rimi Farhana Zaman
Parasitology Laboratory, Department of Zoology, University of Dhaka, Dhaka-1000, Bangladesh.

Abstract/ Executive Summary:

The present investigation was carried out to determine the prevalence of arthropoda and helminth parasites in sheep at Azimpur, Dhaka during February, 2012 to January, 2013. A Total of 60 hosts were examined and about 71.67% sheep were found to be infested with arthropod parasites. In sheep two species of arthropod parasites, Linognathus vituli (61.67%) and Damalinia caprae (68.33%) were identified as ecto-parasites. The prevalence of ectoparasites was higher during summer (85%), followed by winter (75%) and rainy (55%). The higher intensity was also recorded in summer (325.17±1.92). Lambs were found more susceptible (85.71%) than adult (80.95%) and young (56%) sheep and higher in female (77.27%) than in male (68.42%). Twelve species of helminth parasites were identified, of them, 3 trematodes, 3 cestodes and 6 nematodes, highest prevalence was shown by Strongyloides sp (71.67%) and lowest by Dictyocaulus sp. (3.33%); found comparatively higher in adults (85.71%) than in young (80%) and 28% in lambs. The male sheeps were more suseptible (81.58%) to helminth infection than female (72.73%). Prevalence of helminthes was found higher in winter (95%) season. The value of co-efficient of correlation between the prevalence and intensity of infestation of ectoparasites an d helminth parasites in sheep were 0.95 and 0.978 respectively. In both cases these two variables differed significantly (P<0.01).

Keywords: Infestation, Sheep, Arthropods, Helminthes, Seasons

Location: Azimpur, Dhaka city

Start Date: 00-02-2012

End Date: 00-01-2013

Program Area: Pest Management

Commodity: Diseases

Objectives:

To study the occurrence of ecto and endoparasites of indigenous sheep with their seasonal dynamics and variation in the occurrence of parasites in relation to age and sex of sheep.

Methodology:

The study took place on sheep at Azimpur area of Dhaka city. The present investigation was carried out during the period of February, 2012 to January, 2013, which covered the winter (January and February), the summer (March to June) and the rainy (July to October) season. Fresh fecal samples collected in the morning and then brought to the parasitology laboratory of Zoology Department, University Of Dhaka to conduct the study. A total of 60 hosts were selected randomly. The minimum age of the sheep was 6 months and the age had been determined according to birth record. To study the relationship between parasite infestation and the age of the host, the sheep were categorized into three groups: lamb (≤1 year), young (>1-2 years) and adult (≥2 years). During collection of fecal samples the age, sex, place, body condition and season of the year were carefully recorded. The ectoparasites were collected carefully from different parts of the body of sheep with forceps. In some cases small hairbrush dipped in ethanol was used for the collection of ectoparasites. Morphology or external feature of the arthropod parasites was studied in the laboratory by dissecting (×4) microscope and compound (×10) microscope. The ectoparasites were preserved in 70% alcohol in clean well-stoppered glass vials. Vials were labeled properly. Fecal samples of sheep were collected randomly. Fresh samples were collected from 8.00 a.m. to 10.00 a.m. and twice in a month. The feces were picked up in air tied polythene bag to the laboratory of Department of Zoology, University of Dhaka. The polybags were labeled properly. During collection all necessary precautions were taken including wearing apron, hand gloves to avoid contamination. The fecal samples were preserved in 10% formalin. In present study, concentration method was used to study gastrointestinal parasites of sheep. This method provides high concentration of parasites and which is relatively free of contaminating particulate materials. Eggs of various gastrointestinal parasites were identified with the help of compound (10×) microscope. The 40x objective was also used for the confirmation of ova, larvae (non- motile) and cysts. All the terminologies used in the current study were according to standard methodology.

Source of Information: Bangladesh J. Zool. 42(1): 45-55, 2014

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In sheep two species of arthropod parasites, Linognathus vituli (61.67%) and Damalinia caprae (68.33%) were identified as ecto-parasites. The prevalence of ectoparasites was higher during summer (85%), followed by winter (75%) and rainy (55%). The higher intensity was also recorded in summer (325.17±1.92). Lambs were found more susceptible (85.71%) than adult (80.95%) and young (56%) sheep and higher in female (77.27%) than in male (68.42%). Twelve species of helminth parasites were identified, of them, 3 trematodes, 3 cestodes and 6 nematodes, highest prevalence was shown by Strongyloides sp (71.67%) and lowest by Dictyocaulus sp. (3.33%); found comparatively higher in adults (85.71%) than in young (80%) and 28% in lambs. The male sheeps were more suseptible (81.58%) to helminth infection than female (72.73%). Prevalence of helminthes was found higher in winter (95%) season. The value of co-efficient of correlation between the prevalence and intensity of infestation of ectoparasites an d helminth parasites in sheep were 0.95 and 0.978 respectively. In both cases these two variables differed significantly (P<0.01).

Knowledge Management: Journal