Abdul Haseeb Khan

Studies On The Babesia Canis And Ticks Of Dogs - 2001

The present study was conducted from September to November, 2000 to find out the prevalence and taxonomy of ticks and Babesia canis of dogs. In addition, their effect on haematological parameters was also studied. To find out the prevalence, 759 dogs were included in the study. The samples were collected from the dogs brought to Dog Hospital, College of Veterinary Sciences, Lahore, Private Veterinary clinics and from different Private Kennels present in and around Lahore.

Out of the total 759 dogs, 205 (27 %) dogs were found positive for single species of ticks i.e. Rhipicephalus sanguineous and 179 (23.5%) dogs were found positive for Babesia canis. Seventy four (9.7%) dogs were infested with only ticks and 48 (6.3%) dogs were found positive for only Babesia canis. Out of total 205 ticks infested dogs, 131 (63.3%) were found positive for Babesia canis.

For haematological study from the total examined dogs 80 (60 infected, 20 healthy) were selected and divided in to four groups A (mixed infection of ticks and Babesia), B (ticks only), C (Babesia only) and D (non-infected). Each group comprising of 20 animals.

The total erythrocytic count were 2.5x106±0.28/,il, 3.2x106±0.21/iil, 3.6x106±0.13/id and 4.9x106±0.18/j.d of group A, B, C and ID respectively. There was significant difference amongst group A, B, and C as compared to the control group-D. A significant difference amongst A-B, A-C was also noted. But no significant difference between group B and C could be recorded.

Hemoglobin estimation in group A was 7.1±0.33 g %, in B was 9.2±0.30 g % and in group C was 9.8±0.30 g %. It was revealed that there was significant decrease in hemoglobin contents as compared to group 'D' which showed 12.01±0.6 g %. There was significant difference between group A-B and A-C, but no significant difference between group B-C (P<0.05) was noted.

The animals belonging to group A, B, C and D had ESR as 40.15±3 mm/hour, 32.25±0.17 mm/hour, 25.2±1.1 mm/hour, and 16.3±1.3 mm/hour respectively. There was significant difference amongst the groups A, B, C as compared to group D. There were also significant difference amongst groups A-B, A-C and B-C (P<0.05). The RBC of the groups A, B, and C were found crenated and macrocytic hypochromic.

The overall results showed that effects of mixed infection of ticks and Babesia on haematology were more adverse as compared to the single infections of ticks or Babesia.



Department of Parasitology

0712,T


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