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1. Antimicrobial Efficacy Of Different Drugs Against Experimentally Induced Salmonella Pullorum Infection In Broilers

by Ashfaq Ahmad Mirza | Dr. Muhammad Sarwar Khan | Dr. Mazhar Iqbal | Dr. Shakil | Faculty of Veterinary Sciences.

Material type: book Book; Format: print ; Literary form: not fiction Publisher: 1996Dissertation note: A total of 120 broiler chicks were randomly selected and divided into six groups viz A, B, C, D, E and F, consisting of 20 birds each. At 4 week of age, A to E groups were experimentally infected with Salmonella pullorum inoculum. Group E (infected, non-medicated) and F (non-infected and non-medicated) were kept as control. The groups A, B, C and D were treated with Ampicillin 20%, Oxy-N-50, Chioricol10 and Trimodin forte, respectively, post infection. All the groups were kept under close observation to record signs and symptoms of disease, mortality, body weight gain and Feed Conversion Ratio. Gross lesions in visceral organs were also noted during this study. Some blood parameters (TEC, TLC and Hb content) were also estimated, pre and post infection. A mortality percentage in groups A, B, C and D were recorded as, 25%, 35%, 15% and 10%, respectively, while 70% mortality was recorded in control group F. According to this trial Trimodin forte (Trimethoprim Plus Sulphadiazine) . afforded maximum protection against infection and proved best in relation to weight gain and F.C.R. Chloricol-10 (Chioramphenicol) stood second in the list, while Ampicillin-20% (Ampicillin Trihydrate) was the third drug in furnishing protection against the infection. Whereas, Oxy-N-50 (Oxytetracycline plus neomycin sulphate) was the least effective drug in respect of protection against pullorum disease. The signs of ill health appeared 3 to 4 days post infection were listlessness, ruffled feathers, droopy wings, loss of appetite, poor growth, depression, increased thirst and severe diarrhoea of chalky white colour. The postmortem findings were enlarged and congested liver streaked with haemorrhages, 2-3 times enlarged spleen (spleenomegaly), enlarged heart and pericarditis, congested and distended kidneys, area of gray hepatization in lungs, thickened and inflammed intestinal walls and presence of necrotic foci in cardiac muscles, liver, spleen, lungs, caeca, large intestine and muscles of gizzard. The Total Erythrocytic count and Haemoglobin contents were decreased and Total Leukocytic Count, were increased 3 days post infection. The findings of the present study will further elucidate the disease and help in diagnosis and treatment of this malady on large scale. Availability: Items available for loan: UVAS Library [Call number: 0482,T] (1).

2. Comparison Of Perfused And Non Perfused Jejunal Auto Transplants For Reconstruction Of Massive Abdominal

by Ghalia Qayyum | Dr. Mazhar Iqbal | Dr. muhammad Younas | Dr. Shakil | Faculty of Veterinary Sciences.

Material type: book Book; Format: print ; Literary form: not fiction Publisher: 1997Dissertation note: Surgeons occasionally see patients who have malignant soft tissue tumors, loss of a part due to trauma or excessive debridement of the abdominal wall. Regardless of the etiology they represent challenging anatomical problems, both with respect to resection and especially to reconstruction. Many defects are unsightly and difficult to appose by the surrounding tissue. SuIeons in medical field as well as veterinarians have tried and reported many surgical corrections to these conditions. Twenty clinically healthy mongrel dogs of either sex were used for the experimental translocation of jejurial auto-grafts for the resurfacing of massive abdominal wall defects. The dogs were randomly divided into two groups of 10 animals each. Laparotomy was carried out by a vertical incision in right lateral recumbency. A portion of jejunum 12 cm long was selected and isolated from rest of the intestinal tract with its mesenteric blood supply intact. The continuity of the small bowel was restored by end-to-end anastomosis. The isolated segment of jejunum was then processed and cut open longitudinally along the antimesenteric border. After wards the open patch was cut into two equal pieces, perpendicular to the long axis and then sutured together parallel, so as to have even bigger surface area of the graft to cover a defect which was wider in width and could be repaired by single width of the intestine. In group I, both the parts of intestine sutured together retained their blood supply intact. In group II, one half of the transplant was rendered avascular. Using the previous incision site, a full thickness 6x6 cm, square shape defect was created in the abdominal wall. The jejunal patch was placed over the defect in the abdominal wall, with its mucosal surface apposing the external fascia. Simple interrupted sutures using chrornic cat gut No.2 were used to tailor the patch in such a way that normal contours of abdominal wall were reconstituted. A drain was placed at the site of operation and the subcutaneous tissue and skin were closed in a routine manner. In group-I there was no mortality and no herniation of the bowel occurred through the operative site. The graft was well tolerated by the animals as it was homologous. In group-TI the nonvascularised portion of the graft did not develop its new blood supply leading to its death and sloughing. Eventration took place on 6th day and the animals died, except one dog. It was concluded on the basis of this study that: 1. In group-I perfused pedicle grafts provided 100% resurfacing to the abdominal wall defects. 2. The mucosa of the bowel transplant under went degeneration. 3. The junctional histology of the graft revealed a thick layer of fibrous tissue indicating perfect union between the two portions of the graft. 4. A marked inflammatory reaction was also evident. 5. There was clear cut histological evidence of failure with loss of cellular integrity and no production of collagen fibers in the non perfused group. In a nut shell the chosen method of reconstruction was consistent with the hierarchy of treatment priorities, which makes survival paramount, followed by function, freedom from pain and acceptable appearances. Thus when there is no other way of saving the animals life other than surgical intervention, the satisfaction derived from such a successful, last resort operation is indeed a valuable encouragement to a young veterinary surgeon. Availability: Items available for loan: UVAS Library [Call number: 0527,T] (1).

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