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Hematological Studies on Cattle Exposed to Fasciola Gigantica Infestation

M. J. F. A. Taimur
Animal Health Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

A. K. Halder
Animal Health Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

S. M. Z. H. Chowdhury
Animal Health Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

N. Akhter
Animal Health Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

M. S. Islam
Animal Health Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

A. H. M., Kamal
Animal Health Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

K. S. Islam
Deaprtment of Medicien, Bangldesh Agirucltural University, Mymensingh, Bangladesh.

Abstract/ Executive Summary:

Hematological values were determined from 140 Fasciola gigantica infested and 138 non-infested apparently healthy (control) zebu cattle from eight different sites of Bangladesh. The F. Gigantica infested cattle have experienced of normocytic normochromic anemia indicated by the significant (p<0.01) decline of total erythrocyte count, hemoglobin level, packed cell volume and mean corpuscular hemoglobin concentration and significant (p<0.01) increase of erythrocyte sedimentation rate, as compared with non-infested control animals. Values of mean corpuscular volume and mean corpuscular hemoglobin content were not differed significantly between the infested and control animals. There observed significantly (p<0.01) higher eosinophil and neutrophil counts and significantly (p<0.01) lower lymphocyte counts in fasciola infested cattle in comparison with the control animals.

Keywords: Hematology, Cattle, Fasciola gigantica Infestation

Location: Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

Start Date:

End Date:

Program Area: Pest Management

Commodity: Cattle

Objectives:

To determine the hematological changes on such cattle exposed to F. Gigantica infestation.

Methodology:

The study was conducted at eight different sites of Bangladesh. Fecal samples were collected from a large number of zebu cattle at each site and these were examined by Stoll's dilution technique. A total of 140 cattle from 8 sites with fecal egg count above than 300 epg (eggs per gram of feces) were selected as infested group and a total of 138 apparently healthy cattle of same age, sex, breed were selected as non-infested control group. All the control animals were animals were treated with Triclabendazole and Thiophanate for liver flukes and gastro-intestinal nematodes respectively with a gap of 21 days. The feces of all treated animals were examined at 7 days interval for a period of 42 days and the absence of parasitic ova for three subsequent fecal examinations were considered as gastro-intestinal parasite free animals. The blood samples from all infested and control animals were collected from jugular veins in anticoagulant vials (EDTA as anticoagulant). Total erythrocytes count (TEC), erythrocytes sedimentation rate (ESR), packed cell volume (PCV) and differential leukocytic count (DLC) with wright's stain were performed as per methods. Acid hematin procedure was used for hemoglobin (Hb) estimation following the technique. Mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) content and mean corpuscular hemoglobin concentration (MCHC) were determined. Statistical analysis was performed using Fisher's 't' rest.

Source of Information: AJASW 1993 Vol. (No. 2) 301-303

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study revealed significantly higher eosinophil counts in fasciola infested cattle than the control animals. This result confirms the earlier reports. Neutrophil counts were also found significantly higher in infested animals and this might be a result of secondary bacterial infections caused by migration of young flukes through the biliary parenchyma. This finding is in agreement with the result. The significant fal in lymphocyte counts in infested animals of the present study substantiate the observation.

Knowledge Management: Journal