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Isolation, Identification And Antibiotic Resistance Profile Of Bacterial Isolates Of Public Health Significance In Raw Milk Of Cows And Buffaloes

by Hafiza Khadija Naseem (2010-VA-315) | Dr. Arfan Ahmad | Dr. Muhammad Zubair Shabbir | Dr.Muhammad Hassan Mushtaq .

Material type: book Book; Literary form: not fiction Publisher: 2016Dissertation note: Milk is a highly nutritious food that can be obtained from a variety of animal sources such as cows, goats, sheep and buffalo for human consumption. On account of zoonotic importance of some opportunistic pathogens of public health significance in milk, the studytherefore was designed for isolation identification and antibiotic resistance assessment of Staphylococcus aureus, Escherchia coli and Salmonellaspp in raw milk of cows and buffaloes. A total of 60 raw milk samples were collected from buffaloes (n=30) and cows (n=30) located in an area around district Lahore. To evaluate the source of milk borne pathogens in milk, half samples (n=15) of each animal species were taken directly from udder while remaining half (n=15) from milking utensils at the same farm. Samples were cultured for isolation and confirmed by biochemical tests and their antibiotic resistance pattern was checked by Kirby baur disk diffusion test. Samples that were taken from udder of buffalos,E.coli, Salmonellaspp and Staph aureus was isolated from 60%, 26% and 46% of processed samples whereas from utensils E.coli, Salmonella spp. and Staph aureuswas isolated from 66.66%, 66.66% and 73.33%of samples respectively. While Samples that were taken from udder of cow’sE.coli, Salmonella and Staph aureus was isolated from13%, 0% and 40% of processed samples where as samples that were taken from utensils at the same farm E.coli, Salmonella and Staph aureuswas isolated 26%, 26.66% and 46% respectively. Antibiotic resistance pattern of isolates E.coli, Salmonellaspp and Staph aureus showed 100% resistance to Lincomycin and Tylosine. Ciprofloxacin showed 75% sensitivity followed by Ciprofloxacin showed 75% sensitivity followed by 65%Oxytetracyclin 60% doxycycline and 58% Amoxicillin. CONCLUSION Our study reveals that raw milk supplied and consumed in Lahore city of Pakistan is contaminated with public health significancebacteria Salmonella spp, E.coli and Staph aureusdue to unhygienic conditions and milking practices.Data ofAntibiotic resistant profiling of these isolates showed 100% resistant to Lincomycinand Tylosine. While sensitive against Ciprofloxacin> Doxycycline >Oxytetracycline.Efforts should be made to use antibiotics wisely and hygienic practices should be followed during collection to supply chain of milk to avoid spread of antibiotic resistant bacterial strains from animal source to human beings. Availability: Items available for loan: UVAS Library [Call number: 2521-T] (1).

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Study On The Status And Risk Factors Of Brucellosis In Bovines Of District Poonch, Azad Jammu And Kashmir

by Muhammad Kashif Idrees (2008-VA-68) | Dr. Arfan Ahmad | Dr. Muhammad Zubair Shabbir | Dr. Muhammad Avais.

Material type: book Book; Literary form: not fiction Publisher: 2016Dissertation note: Brucellosis is one of the main diseases which played a blemished role in destroying the economy of livestock farmers in Azad Jammu and Kashmir in the form of low productivity and reproductive disorders. In district Poonch, abortions rates in bovines have been increased tremendously during the last decade. To find out the Status of brucellosis in cattle and buffalo, 300 animals (n=150 cattle; n=150 buffalo) were randomly selected and screened for brucellosis in district Poonch AJK. Various risk factors like species, age, sex, pregnancy, lactation, abortion, breeds, repeat breeding, retained placenta, housing, feeding, management were also evaluated for their impact on occurrence of brucellosis in this area. Data regarding risk factors of each animal was recorded in a Performa (Attached as annexure A). Serum samples were collected from these animals and analyzed through RBPT. The serum samples positive for Brucella abortus through RBPT were further subjected to indirect ELISA for further confirmation. Serum samples analysis was done at University Diagnostic Lab, University of Veterinary and Animal Science, Lahore. The results showed the overall seropositivity of 3.7% and 2.7% in cattle and buffalo through RBPT and i-ELISA, respectively. Moreover the result revealed that in cattle the positivity was more (4.6%) and in buffalo was comparatively less (2.7%) through RBPT and through i-ELISA same more positivity (3.4%) in cattle than buffaloes (2.0%). The results revealed that positivity of brucellosis increases with the age. The positivity in non-pregnant was more than that of pregnant while the positivity in non-lactating animals more than the lactating animals. The animals with the history of abortion and retained placenta were more serological positive than the animals without history such history. In breed wise comparison crossbreed cattle and Nili-Ravi buffaloes evidenced more serological positive 43 Summary percentage. Sex wise the female animals have more positivity compared to male animals. As far as village wise positivity Hajera, Davarandi, Mandol, Madarpur, Nakkar were evidenced for presence of brucellosis. Regarding impact of risk factors in the occurrence of brucellosis, statistically there was non-significant (≥0.5) difference observed in this study. The findings of this study evidenced that brucellosis is present and endemic in cattle and buffaloes in the district Poonch. However it was suggested that more surveys are required across the country in order to formulate a policy for prevention and control of brucellosis in livestock. Availability: Items available for loan: UVAS Library [Call number: 2625-T] (1).

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