Dr. Md. Nurnoby Islam

This work was undertaken to investigate the biosecurity practiced on small scale commercial poultry farms of Dinajpur district from July-2018 to June-2019. A total of 70 poultry farms from different upazilla were considered for it. Four experimental designated data were collected directly with a pre tested questionnaire. As per the requirements of experimental objectives, the collected data on different variables were subjected to statistical analysis. The data revealed that different types of litter materials were used by individual farms. Among them use of rice husk was in highest value (54.28%; 38 farms). Only 2 farms (2.85%) used ash as their litter materials. Plastic was the most common materials used to prevent air passage in 41 farms (58.57%) whereas only 12 farms (17.14%) used the cloths or carpet. In case of dead bird disposal, 40 farms (57.14%) were habituated with throwing off whereas only 4.29% (3 farms) farms practiced burning of disposal. Disposal of litter materials i...

The control of Newcastle Disease (ND) relies on the use of safe and effective vaccines. Live vaccines which are prepared with lentogenic strains of Newcastle Disease Virus (NDV) are now more frequently used in broilers and layers than vaccines prepared from chemically inactivated strains of NDV mixed with adjuvant. This is because live freeze-dried vaccines can be produced on a large scale at a relative low cost. The vaccines are easy to administer on large scale, and rapidly stimulate cell-mediated and mucosal surface immunity. The present study was designed to compare the efficacy of LaSota, B1 and Mukteswar Strain vaccines for NDV in layer chickens. Findings of our present study indicated that production of HI-antibody titre was higher in birds of group A (512) vaccinated with ND LaSota, compared to those of group B (256) vaccinated with RDV (Mukteswar strain); group C (128) vaccinated with ND B1 (B1 strain) Hitchner at six weeks after vaccination. Thus, the ND LaSota vaccine was...

The study was conducted at Upazila Livestock Office, Sadar, Dinajpur of Bangladesh from January 2018 to December 2018 to investigate the incidence of reproductive disorders in goat. Data on reproductive disorders were collected on the basis of owner’s complain and observed clinical signs. Age and season wise occurrences of reproductive disorders were also recorded. Descriptive statistical analysis was done. Out of 2484 clinical cases, a total of 107 reproductive disorders of goat were recorded. Incidence of abortion (38.3%) was higher and pyometra (0.9%) was lower among reproductive disorder in goat. The incidence of reproductive disorders of goat was higher in group-2 (above 1-2 years) (36.4%) followed by group-1 (upto 1 year) (21.6%), group-3 (above 23 years) (21.5%), group-5 (above 4 years) (15.3%) and group-4 (above 3-4 years) (3.6%). Among reproductive disorders, the incidence of abortion was higher in group-2 (58.9%) followed by retained placenta (50%) in group-4, metritis (47...

The experiment was conducted to evaluate the effects of growth promoter (Aviator™) and enzymes (Acinor™) with basal feed. A total of 40 Cobb-500 Broiler day old chicks were reared in an open sided gable type house for a period of 5 weeks from 24th september to 28th october, 2017. Body weight and feed intake were recorded on day 0, 7, 14, 21, 28 and 35. The experiment was conducted in a Completely Randomized Design (CRD). Birds were randomly distributed into four dietary groups i.e control (T0) with basal diet, T1 with basal diet and growth promoter (GP) @ 2 gm/kg of feed; T2 with basal diet and enzymes (EZ) @ 0.4 gm/kg of feed and T3 with basal diet and GP plus EZ (2 gm/kg + 0.4 gm/kg). The records were kept on body weight, feed intake and mortality while weight gain, feed conversion ratio (FCR) and survivability were calculated. Broiler chicks that received GP and a combination of GP+EZ treatments showed significant improvement in performance (p<0.05) over control with respect t...

Salmonellosis is a major public health problem around the world affecting both animals and humans caused by various species of Salmonella. The present study was aimed at isolation, identification and antibiogram profiling of Salmonella spp. isolated from cloacal swabs of apparently healthy Japanese quail of selected live bird markets at Dinajpur Sadar Upazila under Dinajpur district of Bangladesh. The isolates were identified based on their morphological, cultural and biochemical characteristics and motility test. While the antibiogram profiling of the Salmonella isolates were performed with standard disc diffusion methods. Among the collected samples (n=53), 16.98% samples (n=9/53) were found positive for Salmonella spp. Interestingly, all isolates were found to be motile while tested with Motility Indole Urease (MIU) test. The antibiogram study revealed that all the isolates were completely (100%) resistant to Amoxicillin, Gentamicin, Erythromycin, Tetracycline and Ceftriaxone, whereas the sensitivity rate of the isolates to Ciprofloxacin, Amikacin and Streptomycin were 77.8%, 55.6% and 33.3%, respectively. While, among the resistant Salmonella isolates, all were multidrug resistant (MDR). Therefore, findings of the present research work suggested that presence of multidrug resistant Salmonella spp. in quails could be a potential threat for public health.

The control of Newcastle Disease (ND) relies on the use of safe and effective vaccines. Live vaccines which are prepared with lentogenic strains of Newcastle Disease Virus (NDV) are now more frequently used in broilers and layers than vaccines prepared from chemically inactivated strains of NDV mixed with adjuvant. This is because live freeze-dried vaccines can be produced on a large scale at a relative low cost. The vaccines are easy to administer on large scale, and rapidly stimulate cell-mediated and mucosal surface immunity. The present study was designed to compare the efficacy of LaSota, B1 and Mukteswar Strain vaccines for NDV in layer chickens. Findings of our present study indicated that production of HI-antibody titre was higher in birds of group A (512) vaccinated with ND LaSota, compared to those of group B (256) vaccinated with RDV (Mukteswar strain); group C (128) vaccinated with ND B1 (B1 strain) Hitchner at six weeks after vaccination. Thus, the ND LaSota vaccine was found to be superior to some extent than ND B1 Hitchner. However, as regards vaccination of chicks against NDV in earlier days, the use of lentogenic strains are recommended although it should be kept in mind that vaccination with LaSota strains would cause greater problems in young susceptible birds than Hitchner B1 strain and even though LaSota induces stronger immune response.

The study was conducted at Upazila Livestock Office, Sadar, Dinajpur of Bangladesh from January 2018 to December 2018 to investigate the incidence of reproductive disorders in goat. Data on reproductive disorders were collected on the basis of owner's complain and observed clinical signs. Age and season wise occurrences of reproductive disorders were also recorded. Descriptive statistical analysis was done. Out of 2484 clinical cases, a total of 107 reproductive disorders of goat were recorded. Incidence of abortion (38.3%) was higher and pyometra (0.9%) was lower among reproductive disorder in goat. The incidence of reproductive disorders of goat was higher in group-2 (above 1-2 years) (36.4%) followed by group-1 (upto 1 year) (21.6%), group-3 (above 23 years) (21.5%), group-5 (above 4 years) (15.3%) and group-4 (above 3-4 years) (3.6%). Among reproductive disorders, the incidence of abortion was higher in group-2 (58.9%) followed by retained placenta (50%) in group-4, metritis (47%) and dystocia (23.5%) in group-5, repeat breeding (17.4%) and anestrus (4.3%) in group-3, and pyometra (2.5%) in group-2. Slight seasonal variation among individual case of reproductive disorders were recorded, highest in winter (34.5%) than summer (32.4%) and rainy season (31.7%). The incidence rate of abortion was high in each season (summer 25%, rainy 32.3% and winter 56.7%). In case of retained placenta and dystocia, the incidence was high in summer season (22.2%). But in case of metritis and repeat breeding, the incidence was high in rainy season (32.3% and 14.7% respectively). For treatment of reproductive disorders in goat, antibiotics drugs (35%) were used most commonly and hormonal drugs (3%) used in lower percentages. It was concluded that the most pressing constraint on goat reproduction in Bangladesh is abortion, retained placenta, dystocia and metritis. Strategies should be taken to minimize their occurrence.

This work was undertaken to investigate the biosecurity practiced on small scale commercial poultry farms of Dinajpur district from July-2018 to June-2019. A total of 70 poultry farms from different upazilla were considered for it. Four experimental designated data were collected directly with a pre tested questionnaire. As per the requirements of experimental objectives, the collected data on different variables were subjected to statistical analysis. The data revealed that different types of litter materials were used by individual farms. Among them use of rice husk was in highest value (54.28%; 38 farms). Only 2 farms (2.85%) used ash as their litter materials. Plastic was the most common materials used to prevent air passage in 41 farms (58.57%) whereas only 12 farms (17.14%) used the cloths or carpet. In case of dead bird disposal, 40 farms (57.14%) were habituated with throwing off whereas only 4.29% (3 farms) farms practiced burning of disposal. Disposal of litter materials in agricultural land was practiced by 13 farms (18.57%) whereas selling the used liter materials was practiced by 42 farms (60%). Veterinary service was taken in 40 farms which showed the highest value of frequency (57.14%) and lowest frequency (5.71%) was recorded in those farms where service was taken from Feed & Medicine dealers. In most of the farms (64.29% or 45 farms) workers did not take any formal or institutional training and maximum number of farms (78.57%) did not have knowledge on biosecurity. About 5-10% mortality rate was recorded in 54 farms (77.14%) and 10 % mortality rate was found in 7 farms. 5-10 days interval between batches was maintained in 25 farms (28.57%) whereas 6-30 days interval was maintained in 9 farms (8.57%). The study suggests that specific biosecurity program should be developed for individual poultry farm according to their particular need and situations with the cooperation of the decision makers and veterinarian to ensure the success of the farms.

The experiment was conducted to evaluate the effects of growth promoter (Aviator™) and enzymes (Acinor™) with basal feed. A total of 40 Cobb-500 Broiler day old chicks were reared in an open sided gable type house for a period of 5 weeks from 24th september to 28th october, 2017. Body weight and feed intake were recorded on day 0, 7, 14, 21, 28 and 35. The experiment was conducted in a Completely Randomized Design (CRD). Birds were randomly distributed into four dietary groups i.e control (T0) with basal diet, T1 with basal diet and growth promoter (GP) @ 2 gm/kg of feed; T2 with basal diet and enzymes (EZ) @ 0.4 gm/kg of feed and T3 with basal diet and GP plus EZ (2 gm/kg + 0.4 gm/kg). The records were kept on body weight, feed intake and mortality while weight gain, feed conversion ratio (FCR) and survivability were calculated. Broiler chicks that received GP and a combination of GP+EZ treatments showed significant improvement in performance (p<0.05) over control with respect to body weight gain, feed conversion ratio, carcass yield. Cost-effectiveness of GP+EZ treatment higher than all other treatments but GP and EZ had almost similar cost-effectiveness. Feeding EZ alone had comparatively less weight gain and almost similar feed conversion ratio compared with GP groups but it’s performance was significantly better than that of control group. This study indicated that the diet containing GP+EZ offered slightly increased benefits to the growth performance of  broilers and these benefits were almost equal to the GP. It is revealed that growth promoter (Aviator™) supplementation with enzymes (Acinor™) is beneficial for broiler production.