1.
A Study On Pathology And Haematology Of Broiler Chickens Experimentally Infected With Salmonella
by Younus, M | Dr. Shahzada Khurram Ashraf | Dr. Mubasher | Dr. Shakeel Akhter Khan | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 1994Dissertation note: The investigation was conducted to study the pathology and Haemotology of broiler chickens suffering from experimental salmonella gallinarum infection. Total of 140 day did broiler chicks were reared upto 3 weeks of age and were fed on commercial poultry feed. The birds were randomly divided into four groups i,e. A, B, C and D containing 35 chicks in each group. The inoculation of broiler chicks of experimental groups were done at the age of two weeks at a dose rate of 1ml per bird through different routas ic group A through oral route, group B through subcut, group C through I/rn and group D was kept as control. All the groups were kept under close observation to record signs and symptoms. At the age of 3 weeks (7 days of post infection) the birds of experimental and control groups were slaughtered for the study of haematological parameters (Fib estimation, TEC and TLC), gross and histopathological lesions in visceral organs (Heart, Liver, lung, spleen and kidneys)
Antemortem symptoms were recorded throughout the experiment in all the infected groups and observed listlessness with ruffled feathers, droopy wings, poor growth, weakness, loss of appetite, adherence of whitish material to vent, laboured breathing, slight depression and increased thirst. Conjunctivitis and arthritis in few cases were observed.
The postmortem changes observed in all the infected groups A, B and C at the age of 21 days (7 clays post infection) included enlarged heart, necrosis of myocardium, pericarcil tis, enlarged creamy white liver with pin point haemorrhages, congested lungs with necrotic loci ple.nomegaiy. and swollen kidneys with c1isco1.oiration and triable consistency. No lesions could be observed in control group D.
Haemotological alterations were studied in all the groups i ,e A, B, C and D. There was a significant decrease in haemoglobin concentration, total erythrocytic count amongst all the infected groups A, B and C at 21 days of age (7 clays post infection) as compared to control group D. but: the total leukocytic count showed a significant increase in all the infected groups, i, e. A, B and C as compared to control group D at the 21 clays of age.
The main histopathological lesions observed in al .1 the infected groups A, B and C at the age of 21 clays (7 clays of post infection) in heart, liver, lungs, spleen and kidneys included necrosis, haemorrhage and leukocytic: infiltration. However, in few cases fatty destrophy, congestion and degenerative changes were also observed. No histopathological lesion could be observed in control group D.
From present study it was concluded that fowl typhoid caused by Salmonella gallinarum infection resulted in higher mortality and pathological changes especially through intramuscular route as compared to other routes of infection.
Availability: Items available for loan: UVAS Library [Call number: 0370,T] (1).
2.
The Effects Of Piroplasmosis On Hematology In Equines
by Salva | Dr. Mubasher Saeed Mian | Dr. Asif Rabbani | Dr. Shakeel | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 1996Dissertation note: Piroplasmosis is a serious disease of the domestic animals including horses. It is caused by species of the genus Babesia i.e. . egui and B. caballi resulting in death due to excessive loss of blood. The present study was conducted to find out the effect of natural Piroplasmosis on various blood parameters, viz, total erythrocytes count (TEC), hemoglobin estimation (Jib), packed cell volume (PCV), total leukocytes count (TLC) and differential leukocytes count (DLC) in horses.
A total of forty horses (Group A including 20 uninfected horses and Group B included 20 horses showing clinical symptoms of the disease and confirmed positive for piroplasmosis through blood examination were used in the study and found to cause the infection although . caballi infection was more predominant.
Heamatological examination revealed a significant decrease (P<0.05) in the erythrocyte count, hemoglobin level and packed cell volume of the infected horses.
Normocytic and hypochromic type of anemia was observed. Total leukocyte count was also decreased. A decrease in the number of rieutrophils, eosinophils, basophils, monocytes and lymphocytes was also observed in the infected horses.
Out of the 20 infected horses, 4 had B. equi and sixteen had B. caballi infection indicating that . caballi was more prevalent.
Availability: Items available for loan: UVAS Library [Call number: 0432,T] (1).
