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Population Density of Helminths in Ducks: Effects of Host’s Age, Sex, Breed and Season

T. Farjana
Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

K. R. Islam
Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

M. M. H. Mondal
Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

A study was conducted to investigate the population density of helminth parasites in domestic ducks (Anas boschas domesticus) in relation to host’s age, sex, breed and seasons of the year from March 2002 to May 2003. A total of 300 ducks were collected from different villages of Netrokona and Mymensingh districts of Bangladesh and autopsied to collect the parasites and counted to determine the population density of parasites. Off 300 ducks examined, 290 (96.66%) were infected with 17 species of helminth parasites in which 11 species were trematodes, 4 were cestodes and 2 nematodes. Among the parasites, density of cestodes was the highest (33.15±5.26), followed by trematodes (5.98±1.32); and nematodes (2.95±0.68). Mean density of parasites increased with the increase of age (young: 21.23±1.09, adult: 26.18±2.14 and old: 27.87±2.98) while the mean density of most of the helminth parasites was higher in female ducks (31.35±4.72) than in males (27.52±3.32). Indigenous ducks (33.72±3.61) were infected with the highest load of helminths than Khaki Campbell breed (29.61±4.32) of ducks. Mean density of most trematodes (5.42±0.80) were highest in winter season whereas mean density of all cestodes (48.43±4.85) and nematodes (4.13±1.76) were highest in summer. The present study suggests that age, sex, breed of ducks and seasons of the year influence the parasitic infection to a greater extend.

Keywords: Population density, Helminths, Duck, Bangladesh

Location: Netrokona and Mymensingh districts, Bangladesh

Start Date: 00-08-2002

End Date: 00-05-2003

Program Area: Animal Health and Management

Commodity: Duck

Objectives:

To investigate the population density of helminth parasites in domestic ducks (Anas boschas domesticus) in relation to host’s age, sex, breed

Methodology:

A total of 300 ducks were purchased from local markets or directly from farmer’s houses and from different small-scale farm located in different areas of Netrokona and Mymensingh districts during the period from August 2002 to May 2003. Ducks were categorized into three age groups such as young ducks (< 6 months), adult (>6 months to 1 year) and older ducks (> 1 year). Both male and female ducks of two breeds namely Khaki Campbell and indigenous/deshi ducks were examined. The experimental period was divided into three prominent seasons such as monsoon (July to October), winter (November to February) and summer (March to June). Collection and identification of parasites were done in The Parasitology Laboratory of Bangladesh Agricultural University. Ducks were autopsied to collect and record the helminth parasites; and collected parasites were counted for determination of population density. Trematodes and cestodes were identified by preparing permanent slides and nematodes were studied by preparing temporary slide adding one drop of lactophenol. In all cases, parasites were identified through detailed morphological studies. For statistical analysis the “t” test was used to analyze data by using SPSS statistical package.

Source of Information: Bangl. J. Vet. Med. (2008). 6 (1): 45–51

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Among the parasites, density of cestodes was the highest (33.15±5.26), followed by trematodes (5.98±1.32); and nematodes (2.95±0.68). Mean density of parasites increased with the increase of age (young: 21.23±1.09, adult: 26.18±2.14 and old: 27.87±2.98) while the mean density of most of the helminth parasites was higher in female ducks (31.35±4.72) than in males (27.52±3.32). Indigenous ducks (33.72±3.61) were infected with the highest load of helminths than Khaki Campbell breed (29.61±4.32) of ducks. Mean density of most trematodes (5.42±0.80) were highest in winter season whereas mean density of all cestodes (48.43±4.85) and nematodes (4.13±1.76) were highest in summer. The present study suggests that age, sex, breed of ducks and seasons of the year influence the parasitic infection to a greater extend. The present study suggests that age, sex and breed of ducks and season of the year influence the parasitic burden to a greater extend.

Knowledge Management: Journal