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The Prevalence And Taxonomy Of Toxocara Canis Alongwith Associated Haemotological Changes In Naturally

By: Chatha, Capt. Muhammad Athar | Dr.Asif Rabbani.
Contributor(s): Dr.Muhammad Afzal | Faculty of Veterinary Sciences.
Material type: materialTypeLabelBookPublisher: 2000Subject(s): Department of ParasitologyDDC classification: 0621,T Dissertation note: Toxocariasis is a common disease of carnivores throughout the world and is caused by Toxocara canis.The larvae of the parasite have been identified as the most frequent etiologic agent of Visceral larva migrans, which is primarily a paediatric disease. In view of the zoonotic importance of the parasite, the present study was conducted to assess the incidence, taxonomy of the species of the genus Toxocara and their effects on various blood parameters of the infected canines. For above purpose, samples were collected from dog hospital, College of Veterinary Sciences, the faecal and blood samples were stored in the refrigerator, of Parasitology Laboratory (C. V. S. Lahore). Only those dogs which had high prevalence in Toxocara canis were examined by different faecal examination methods and were selected to get mature worms, after killing the dogs. Preservation and clearing of worms were carried out by adopting the prescribed methods. The taxonomy of the species of the genus Toxocara was studied with the help of morphological keys. The collective over all prevalence of different types of Toxocara canis recorded in stray and pet dogs was 39 5% The species of Toxocara identified in our area were: Toxocara canis, and Toxocara Leonina. Blood of infected dogs were exposed to various haematological studies including Fib estimation, erythrocyte sedimentation rate (ESR), packed cell volume (PCV), total erythrocyte count (TEC), total leukocyte count (TLC) and differential leukocyte count (DLC). Haematological examinations were made to compare the blood picture of healthy and infected dogs. For this purpose , blood samples each from healthy and infected dogs were examined. The results of haematological examination showed a significant decrease in haemoglobin estimastion, total erythrocyte count, packed cell volume Whereas a significant increase in erythrocyte sedimentation rate total leukocyte count and differential leukocyte count , like neutrophils , eosinophils and very little increase in basophils was also seen.
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Toxocariasis is a common disease of carnivores throughout the world and is caused by Toxocara canis.The larvae of the parasite have been identified as the most frequent etiologic agent of Visceral larva migrans, which is primarily a paediatric disease.

In view of the zoonotic importance of the parasite, the present study was conducted to assess the incidence, taxonomy of the species of the genus Toxocara and their effects on various blood parameters of the infected canines.

For above purpose, samples were collected from dog hospital, College of Veterinary Sciences, the faecal and blood samples were stored in the refrigerator, of Parasitology Laboratory (C. V. S. Lahore).

Only those dogs which had high prevalence in Toxocara canis were examined by different faecal examination methods and were selected to get mature worms, after killing the dogs. Preservation and clearing of worms were carried out by adopting the prescribed methods. The taxonomy of the species of the genus Toxocara was studied with the help of morphological keys.

The collective over all prevalence of different types of Toxocara canis recorded in stray and pet dogs was 39 5% The species of Toxocara identified in our area were: Toxocara canis, and Toxocara Leonina.

Blood of infected dogs were exposed to various haematological studies including Fib estimation, erythrocyte sedimentation rate (ESR), packed cell volume (PCV), total erythrocyte count (TEC), total leukocyte count (TLC) and differential leukocyte count (DLC).

Haematological examinations were made to compare the blood picture of healthy and infected dogs. For this purpose , blood samples each from healthy and infected dogs were examined.

The results of haematological examination showed a significant decrease in haemoglobin estimastion, total erythrocyte count, packed cell volume Whereas a significant increase in erythrocyte sedimentation rate total leukocyte count and differential leukocyte count , like neutrophils , eosinophils and very little increase in basophils was also seen.

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