Cow's milk containing pathogenic bacteria is an important threat to the consumers. The objectives of the present study were to identify the bacterial agents of public health importance in milk samples (n=35) of different locations and to determine their sensitivity to different antibiotics. The milk samples were collected and transported aseptically and subsequently allowed for culture in bacteriological media, Gram's staining and biochemical tests for the identification of bacterial species. The bacteria identified were Staphylococcus aureus, Escherichia coli and Salmonella typhi, and their prevalence, in case of vendor milk specimens (n=28), were 96.43%, 53.57% and 35.71% respectively, and of brand milk specimens (n=7), were 42.86 %, 28.57% and 0%, respectively. This suggests that cautionary measures should be taken for quality milk production and consumption. The antibiotic sensitivity test was done by disc diffusion method and the average inhibition zones, in case of Staphylococcus aureus, were 32 mm for oxytetracycline, 26 mm for amoxicillin, 35 mm for ciprofloxacin, 27 mm for cefotaxime, 30 mm for ceftriaxone, 30 mm for azithromycin, and 26 mm for erythromycin; in case of Escherichia coli, were 5 mm for oxytetracycline, 9 mm for amoxicillin, 22 mm for ciprofloxacin, 30 mm for cefotaxime, 31 mm for ceftriaxone, 15 mm for azithromycin, and 0 mm for erythromycin; in case of Salmonella typhi., were 25 mm for oxytetracycline, 24 mm for amoxicillin, 38 mm for ciprofloxacin, 31 mm for cefotaxime, 34 mm for ceftriaxone, 24 mm for azithromycin, and 0 mm for erythromycin. Therefore, ciprofloxacin and ceftriaxone may be the antibiotics of first choice, and cefotaxime and azithromycin may be the second choice among the test antibiotics for the treatment of illness caused by these bacteria.

Bangladesh Livestock Research Institute (BLRI) plays an important role of public service to animal welfare since the period of 1984. There are a lot of cattle with their proper records in this Institute's cattle farm but previously no report regarding the dynamics of disease prevalence was published. So this research was conducted to determine the prevalence of clinical diseases and manifestations of cattle recorded and breed susceptibility to such diseases in different seasons during the period of January 2011 to December 2014. A total of 1558 cattle (where Pabna was 906 and Red Chittagong Cattle was 652) were included under this study. Diagnoses of clinical diseases and disorders were based on clinical history, clinical findings and different laboratory tests. Among the clinical cases, the highest prevalence was determined in case of ring worm (3.11%) followed by diarrhoea (1.86%), bovine ephemeral fever (1.08%), pneumonia (0.96%), alopecia (0.81%), mange (0.37%), tympany/bloat (0.69%), fever (0.64), lameness (0.53%), arthritis (0.40%), mastitis (0.39%), malnutrition (0.26%) and posthitis (0.19%). Infectious diseases like foot and mouth disease (FMD), black quarter (BQ), anthrax and haemorrhagic septicemia (HS) were not found which may be due to regular vaccination and maintenances of strict biosecurity. In case of breed, higher prevalence (12.09%) was found in Red Chittagong Cattle (RCC) compared to Pabna (11.13%). Among the seasonal cases, winter season (5.21%) had higher prevalence than rainy season (2.26%) followed by summer season (1.65%) in case of RCC, while summer season (3.85%) had higher prevalence than winter season (3.74%) followed by rainy season (3.30%) in case of Pabna. It may be concluded that several diseases and disorders occurred in the BLRI cattle farm but major infectious diseases did not take place owing to improved management of the farm.

The current study was carried out to identify the bacterial species in the faecal samples of 20 diarrhoeic sheep and to observe their sensitivity to different antibiotics. This investigation was performed by collecting diarrhoeal samples from the sheep (n=20) under goat and sheep research farm of Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, Bangladesh. The average age and body weight of the animals were 25 days and 2.5 kg respectively. Of the bacteria responsible for diarrhoea in case of sheep, Escherichia coli alone was found in 6 samples (30%), Escherichia coli combined with Proteus mirabilis was found in 12 samples (60%), and no bacteria could be detected in 2 of the 20 samples tested. Both the bacteria were highly sensitive to ceftriaxone, and moderately sensitive to ciprofloxacin and gentamicin. It could be stated that ceftriaxone is the antibiotic of first choice for the treatment of diarrhoea in sheep, where Escherichia coli is suspected to be the principal causal agent of diarrhoea.

Coccidiosis Phytotherapy ChickenThe present study was designed to explore the disease status of sheep in Bangladesh with the aim of developing health management package for sheep for better and efficient sheep production in Bangladesh. Both retrospective and prospective investigations on the incidence and prevalence of different diseases of sheep have been conducted in the study areas. Information on the disease related factors like health status, sex and age, vaccination, deworming, etc. were collected. Samples (faeces, blood, etc.) were collected from the diseased/dead animals and preserved following the standard procedure. Faecal samples were examined to determine the parasitic loads and faecal as well as blood samples were examined to determine any protozoan infection present in the study animals. Samples from diarrhoeic animals were studied to isolate and identify causal organisms. Antibiotic resistance and sensitivity studies of the aetiological agents responsible for common infectious diseases in sheep were also conducted in order to suggest the most suitable antibiotic to treat the concerned diseases in the field. Since helminthic infections, diarrhea, pneumonia and foot rot were found to be the mostly occurring health hazards in sheep of all ages, especial attempts were made to develop herbal based novel approaches to treat and control major intestinal helminthic infestations of sheep. However, gentamicin and ciprofloxacin were found most effective antibiotics and recommended to use in diarrhoeal cases in the field. On the other hand, methanol extract of mahogany seeds (100 mg), betel leaf (100 mg) and dodder (100 mg) were found significantly effective against 100% worms in 2 hours in vitro and thus recommended to be used in the field against helminthic infection in sheep. Therefore, a health management package for native sheep of Bangladesh can be designed using the present findings with some fluctuations for different sites after doing the in vivo evaluation of the medicinal plants used in this experiment.

An investigation was carried out to study the seroprevalence and risk factors for Brucella seropositivity in sheep in Bangladesh. For this, highly sheep populated ten different districts including all seven divisions of Bangladesh were selected where sheep of Panchagarh (151), Naogaon (101), Tangail (83), Noakhali (56), Sunamganj (52), Patuakhali (119) and Dhaka (75) were tested but sheep of Chapai Nawabganj, Khulna, Noakhali and Feni has under tested for Brucellosis. In the present study, seroprevalence of ovine brucellosis was tested by Rose Bengal Plate Test (RBPT), Serum Agglutination Test (SAT) and Enzyme-Linked Immunosorbent Assay (ELISA). About 5% sheep might have got Brucella infection. The highest Brucella antibody was observed in sheep of Tangail district (8.4%) followed by the sheep of Savar (8.0%), where as sheep of Subarna Char and Kala Para were free from Brucella antibody. In relation to age and sex, adults (6.5%) were more positive than young (3.6%) and female (5.3%) were more susceptible than male (3.8%).