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1. Immune Response Of Chicks To Inactivated Avian Influenza Virus H9N2 Vaccine And Vitamin E Supplementation

by Zahid Munir | Dr.Masood Rabbani | Dr.Khalid Saeed | Miss Sameera Akhtar | Faculty of Veterinary Sciences.

Material type: book Book; Format: print ; Literary form: not fiction Publisher: 2001Dissertation note: The present study was undertaken with the objectives to isolate and characterize avian influenza virus (A IV) involved in high morbidity and mortality in chicken flocks in Karachi area. AIV H9N2 type was isolated from the morbid tissue sample. Inactivated alum precipitated and oil adjuvanted vaccines were prepared from local isolate and inoculated to two groups of chicken. One of AIV-H9N2 vaccine inoculated group was also supplemented with vitamin in feed. This study indicates that AIV-H9N2 was immunogenic and the experimental chicks were immunocompetent as the vaccinated chicks indicated humoral antibodies in their sera. On day 49 the AIV-HI titer range recorded in the serum samples of chicks from group Ai were 64- 256, and titers in sera from group A2 were 64-256. The supplementation of vitamin-E indicated vitamin-E as an anti-stress agent and improved weight gains and FCR in the chicks of group A2. The mean body weights of chicks in group B (control), Ai (vaccinated untreated) and A2 (vaccinated and vitamin-E supplemented) at 63rd day of age were 1750,1750 and 1850 grams respectively. Statistical analysis of the mean thymus body weight, bursal body weight and spleenic body weight indices from treatment groups Ai and A2 and those untreated control B group were significantly different from each other using LSD test (p>0.05). Availability: Items available for loan: UVAS Library [Call number: 0716,T] (1).

2. A Study On Surveillance Of Various Diseases/Problems Of Commercial Broiler Farming In Azad Kashmir

by Shaista Fazil | Dr. Muhammad Athar Khan | Dr. S. Naeem Jafary | Miss Sameera | Faculty of Veterinary Sciences.

Material type: book Book; Format: print Publisher: 2001Dissertation note: The main objective of present work was to investigate the prevalence of various diseases and target the managemental factors affecting the prevalence of various diseases in broiler farming in Azad Kashmir. For this purpose, the project was divided into three portions. In the first portion, a data regarding the prevalence of various diseases in broiler farms was collected from 1990-2000. Maximum mortality was due to infectious bursal disease which caused mortality percentage of 15.4. Other important diseases observed were coccidiosis (12.9%), Omphalitis (8.8%), Colibacillosis (8.2%). In the second portion of the project, one year retrospective study was done. This study was conducted from December, 1999 to December 2001. During this period, twenty broiler farms were visited. These birds had housed birds from 1000 to 5000. The information was collected from farmers, attendants and daily mortality register present at the farms. The influence of season on the prevalence of disease was also observed. A questionnaire was designed to collect the data from each farm that related to mortality rates, vaccination, susceptible age, managemental fault. Highest mortality was due to viral diseases. Infectious bursal disease was the great problem with morality percentage of 29.2 followed by Hydropericardium syndrome having mortality percentage of 20.3 and omphalitis with mortality percentage of 19. Influence of season on the disease was observed by dividing a calendar year into two portions i.e. summer and winter and mortality due to various diseases into two seasons was compared. Early chick mortality, Gumboro disease, Newcastle disease and respiratory diseases were observed to have high incidence in winter than summer while Hydropericardium, colibacillosis and coccidiosis were common in summer than winter. In the third portion of the project, a three months duration study period was decided from June to March, 2001. During this period, twenty broiler farms were visited and study on the prevalence of various diseases, disease mortality rates and managemental factors responsible for various diseases was done. During this period overall mortality was 15.4% due to various diseases. Important diseases causing mortality were Gumboro (25.9%), Hydropericardium (19.3%), Colibacillosis (14.5%) and Omphalitis (14%). Availability: Items available for loan: UVAS Library [Call number: 1115,T] (1).



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