Rubina Rehman

A Study On The Prevalance Of Ascaridia Galli And The Effects Of Experimental Infection On Various Blood Parameters - 1993

Ascaridia galli is the common intestinal nematode of poultry that causes severe losses in birds resulting in decreased weight gain and fall in egg production. These symptoms show that parasitic diseases are the constraints in the development of profitable poultry industry.
To find out the prevalence 300 chicken guts were obtained from different poultry meat shops in Lahore from May to August, 1993.

An overall prevalence of 60 percent was recorded in chicks. The incidence of infection was highest (73.3 percent) in the month of July and lowest (42.6 percent) in the month of May.

For conducting haematological examination one hundred and thirty-five chicks were purchased and reared under good hygienic conditions. At the age of 15 days chicks were divided into 3 groups (A, B and C). Chicks of groups A and B were infected with 50 and 100 eggs, respectively, while group C was taken as control. After 35 days of inducing experimental infection blood samples from all the three groups were taken at an interval of 5 days i.e., 35, 40 and 45 days postinfection to examine erythrocyte count, packed cell volume, haemoglobin level, total leukocyte count and differential leukocyte count.

Significantly lower values of erythrocyte count, packed cell volume and haemoglobin were estimated in infected groups A and B as compared to control group C, while higher values were obtained for heterophil, lymphocyte and eosinophil in infected chicks resulting in an overall increase in total leukocyte count. It was also estimated that A. gal/i produced no significant change in monocyte count.

Chicks from group A, B and C were weighed every week after infection to see the effect of A. gaili infection on body weight.

Results regarding body weight showed that there was significant decrease in weight in group A and B as compared to control group C and there was also significant decrease in group B as compared to group A.

Department of Parasitology


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