1.
Clinicopathological Study Of Theileriosis In Naturally Infected Sheep
by Muhammad Waseem Akhter | Dr. Asim Aslam | Dr. Muti ur Rehman Khan | Prof. Dr. Habib.
Material type: ; Format:
print
; Literary form:
drama
Publisher: 2013Dissertation note: Theleiriosis in sheep is an important infectious disease of small ruminants characterized by General weakness, weight loss, anorexia, elevated body temperature, petechial hemorrhages on conjunctival mucosa, swollen lymph nodes, anemia and cough. Changes in hematological, serum biochemical and histopathological parameters are good indicators for diagnosis of theileriosis. For this purpose a total of 100 blood samples from infected sheep as well as 50 blood samples from healthy sheep were collected on the basis of clinical examination and peripheral blood smears from different farms in and around Lahore. The collected samples were processed at Clinical Pathology Laboratory, Department of Pathology, University of Veterinary & Animal Sciences, Lahore. Hematological parameters were measured by automatic hematology analyzer & serum biochemical parameters were measured by using commercial kits by colorimetric methods using spectrophotometer. Histopathological changes were observed by making slides of tissue samples, and observed under microscope. Molecular confirmation of Theleria sp. was done by using Polymerase Chain Reaction. Finally the data obtained for hematological and serum biochemical parameters were analyzed by using Student's t test.
Previous studies on serum biochemical parameters and hematological parameters were mostly done in large ruminants. But there is little investigation available on the biochemical and hematological alterations of theileriosis in small ruminants. In this study blood samples taken from sheep were examined under microscope by making thin blood smears using Giemsa stain. Theileria piroplasms were seen in RBCs at 100x. Blood samples were also processed for PCR test. In all Theileria ovis positive samples 520-bp fragment was generated on gel by using primers TSsr 170F and TSsr 670R for sheep. All samples positive on microscopy were also positive by PCR. This study provides the base line data for molecular diagnosis of Theileria ovis in sheep in Pakistan. Hematological and biochemical parameters were evaluated in the sheep naturally infected with theileriosis while healthy sheep were selected as control. Hematological findings revealed a significant decrease (P<0.05) in RBC count, WBC count, Hb Conc. and PCV in infected animals as compared with healthy animals. Serum biochemical findings also revealed alterations in activities of enzymes and plasma proteins. A significant decrease in total proteins, albumin, glucose and creatinin and triglycerides was observed while significant increase (P<0.05) in ALT, AST, bilirubin was observed in affected animals as compared with healthy animals. A non significant increase in urea and cholesterol concentration was also observed in infected animals as compared to healthy animals. Different tissues were examined to study gross and histopathological changes. Liver was large, pale and friable. Prescapular lymph nodes were swollen and spleenomegaly was also seen. Kidney showed hemorrhagic spots and some were mottled. Histological examination of the lymph nodes revealed edema, widened intercellular spaces, parenchyma degeneration, massive lympholysis, widened sinuses at some areas and macrophages. Splenic nodules were sparse, diminished in size and lymphocyte depletion in follicles was prominent.In liver, mild infiltration of leukocytes around blood vessels, vacuolation in hepatocytes, increase in sinusoidal space and atrophy of hepatic cord was seen and hepatic cord was broken. In kidney, degeneration of tubular epithelium cells was seen. This study concluded that theileriosis in sheep was associated with some alterations in blood parameters and histopathological changes which could be useful in the diagnosis of ovine theileriosis.
Availability: Items available for loan: UVAS Library [Call number: 1642,T] (1).
2.
Effects Of Ethanolic And Aqueous Extracts Roots And Leaves Of Catharanthus Roseus On Serum Biochemical Parameters In Broilers
by Kiran Sabir (2014-VA-05) | Prof. Dr. Habib ur Rehman | Dr. Muhammad ShahbazYousaf | Mr.Shahid Abbas.
Material type: ; Literary form:
not fiction
Publisher: 2016Dissertation note: The study was designed to checkthe effects of supplementation of C. roseus in various concentrations (0.05%, 0.1% and 0.2%) as an alternative to AGPs on various physiological indices of birdshealth. Antibiotic growth promoters (AGPs) have been used in poultry farms as a drug resistance and drug residues. Now, there is a need to look for safe alternative for AGPs. Catharanthusroseushaving the properties of antimicrobial, antiviral, antifungal, antioxidant and growth promoter.
Total 260 birds weretaken and divided into the 13 groups. Each group was further sub-divided into four replicates with 5 birds in each replicate. The birds were supplemented with basal diet (Group A) and all other groups were supplemented with diet of aqueous extract of Cathrathusroseus at the concentration of 0.05%, 0.1% and 0.2% in the Groups B, C, D, E, F, G, H, I, J, K,L and M for 35 days trial. During the trial period, the birds were vaccinated with Newcastle disease and Infectious Bursal Disease Vaccine (IBDV). Blood was also collected on day 35 to determine the concentration of various physiological indices.
Statistical analysis was conducted by using Statistical Packages For Social Sciences (SPSS Version 20 USA). To analyzed the data one way ANOVA was used.Post hoc test was carried out using tukey.
The results of glucose was found significantly higher (P<0.05) in group H compared to group K and M but similar to group B, C, D, E, F, G, I and J and M. The results of total cholesterol was found significantly higher (P<0.05) in group A, B, D, G, and I compared to group F and J but similar to group C, E, H, K, L and M.The serum Triglycerides concentrationwas no significantly (P<0.05) difference in all treatment groups compared to the control group.The serum ALT concentration was found significantly higher (P<0.05) in group F, G L and M than control group but similar in Groups B, C D E, H, I, J and K.The serum AST concentration was significantly higher (P<0.05) in group K and significantly lower in Groups B,C,I,J,L,M but similar in Groups D,E,F,G,H,A .
It was concluded that Catharanthusroseus can be use as a cheaper, easiest and quickly available source as an alternative of antibiotic in the poultry.
Availability: Items available for loan: UVAS Library [Call number: 2504-T] (1).
3.
In Vitro Study Of The Effect Of Menthol On Electrophysiological Indices Of Isolated Rumen Epithelium In Goat
by Najma Khan (2014-VA-506) | Dr. Imtiaz Rabbani | Prof. Dr. Habib ur Rehman | Dr. Hafsa Zaneb.
Material type: ; Literary form:
not fiction
Publisher: 2016Dissertation note: Ammonia is product of protein metabolism and its reabsorption occur by non-selective cation channels across rumen epithelium otherwise it will not be available as non-protein nitrogen source and excreted out causing hazard to environment. At physiological pH, ammonia is present as NH4+ in rumen and its transport leads to electrophysiological changes. It was reported that addition of menthol to the isolated rumen epithelium of cattle cause electrophysiological changes, primarily linked to the ammonium transport suggesting presence of non-selective cation channels. Addition of cation channel modulators such as menthol to diet can enhance absorption of nitrogen in the rumen. Scarce data was available for rumen epithelium of goats which has a large contribution in livestock population and has a great potential for mutton market revealing effect of cation channel modulators on electrophysiology and ammonium transport. Objective of this study was to investigate the effect of menthol on electrophysiological changes and its link to ammonia transport in the isolated rumen epithelium of goats.
Hypothesis
Menthol may affect the electrophysiology of the isolated rumen epithelium of goats and enhance ammonia transport across rumen epithelium.
Methodology
Ten goats of uniform age and weight were selected and slaughtered in a local slaughter house. Reticulorumen was removed from the abdominal cavity and cleaned in a standard transport buffer solution. Serosal layer of rumen was removed and mounted in the Ussing chamber. Rumen epithelium was incubated with transport buffer solution and after 20 minutes replaced with ammonia containing buffer solution (10mM and 40mM respectively)
46
and changes in bioelectric parameters were observed. Menthol in concentration of 1mM was added to mucosal side and electrophysiological parameters like Isc and Gt were observed. Moreover, pH of serosal side was checked after menthol treatment at time intervals 20, 60 and 90 minutes respectively to assess ammonia transport.
Results
Menthol affected the electrophysiology of isolated rumen epithelium of goats by increasing short circuit current due to increase in ammonia concentrations in the rumen. Menthol addition in 40mM NH4Cl containing solution significantly increased current (p value = 0.00). ΔIsc was also significant between the groups containing 10 and 40mM NH4Cl containing solution. Change in potential difference was significant after addition of menthol in both groups (P = 0.00). Conductance increased significantly by increasing concentration of ammonia (p value = 0.03). PH of serosal side decreased, suggesting possible NH4+ uptake, while on mucosal side increase in pH was observed.
Statistical analysis
Data were analyzed by using completely randomized ANOVA followed by post-hoc test LSD. Level of significance was set at 0.05.
Conclusion
Menthol treatment affects the electrophysiological indices of isolated rumen epithelium of goat presumably by opening non-selective cation channels and enhances ammonium transport across rumen epithelium increasing recycling of nitrogen. This may leads to efficient protein utilization by the animals. Availability: Items available for loan: UVAS Library [Call number: 2558-T] (1).
