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Articles by M. M. Rahman
Total Records ( 30 ) for M. M. Rahman
  J. Alam , M. M. Rahman , B. K. Sil , M. S. R. Khan , Giasuddin and M. S. K. Sarker
  Infectious bursal disease is one of the most important viral disease of poultry usually affects young chickens of 3-6 weeks. Hygienic management and proper vaccination are main way of control of this disease. But maternal antibody affects vaccination with live vaccine. To determine the effect of maternally derived antibody on live vaccine, the study was conducted. A total of 100 day old chicks (50 from vaccinated parent stock and 50 from non-vaccinated parent stock) were used in this study. A preset vaccination schedule was followed for chicken and blood samples were collected to find out the actual effect. It is observed that day old chicks contain high level (6294.14±24.95) of maternally derived antibody which gradually decline below positive level within 15-20 days (390.45 ±19.42) and half-life is about 5 days. Vaccination of chicken with high level of maternally derived antibody interferes with the vaccine virus results no immune response but revaccination provokes immune response. Better immune response is found in chickens vaccinated at day 21 and boostered at day 28. But there may be chance of infection because maternal antibody declined below positive level within 15-20 days. Chickens from non-vaccinated parent stock shows good immune response from first time that is from primary vaccination at day 7 and boosting at day 14.
  G. C. Sil , P. M. Das , M. R. Islam and M. M. Rahman
  To find out the diseases occurring in cockerels and its relationship with the management of cockerel`s farm an investigation was carried out from day-old chicks up to marketing at three different cockerel farms in Mymensingh district. In the farm 1, IBD appeared at the age of 31-35 day, the morbidity being 100% and mortality 28.57%. Vaccination at high environmental temperature and use of no fumigation, might be the managemental factors contributed in the causation of the malady. In the farm 2, the morbidity and mortality of yolk sac infection, hypovitaminosis-E, coccidiosis and miscellaneous condition were recorded 3.6 and 2.4%; 4.4 and 2.0%; 8.4 and 0.8%; 0.4 and 0.4%, respectively. However, litter management problem and problem in maintenance of optimum temperature in the shed might be related to these maladies. In the farm 3, the morbidity and mortality rates of the diagnosed diseases like IBD and hypovitaminosis E were 8.6 and 1.4%; 1.2 and 0.4%, respectively. The proportionate mortality of cockerels in these farms were 81.6% for IBD, 8.04% for hypovitaminosis E, 6.89% for yolk sac infection, 2.29% for coccidiosis and 1.14% for miscellaneous condition. IBD occurred in age group of >2-8 weeks, hypovitaminosis E in 0-2 and >2-8 weeks group, yolk sac infection in 0-2 weeks, coccidiosis in >8-20 weeks and the miscellaneous condition in 0-2 weeks group. The findings indicate that IBD is the major disease problem in cockerel farming in Mymensingh.
  M. M. Rahman , A. S. M. Bari , M. Giasuddin , M. R. Islam , J. Alam , G. C. Sil and M. M. Rahman
  An attempt has been undertaken to evaluate the humoral immunity against Newcastle disease in vaccinated chickens. Two different vaccination schedules were followed in 4000 Bovans White chickens (2000 in each treatment) with the history of ND vaccination in parent stock. The mean HI antibody titres of control groups of Treatment-1 and Treatment-2 revealed day-1 (285.51 and 289.43), day-5 (145.74 and 143.78), day-10 (73.58 and 71.47), day-15 (34.44 and 34.52) and day-20 (18.65 and 17.14) respectively. Birds of treatment-1 were vaccinated at 10 and 24 days old with live ND clone-30 vaccine and at 31 (half dose) and 120 (full dose) days old with oil adjuvant inactivated vaccine. Birds of treatment-2 were vaccinated at 10, 24 and 60 days old with live ND clone-30 vaccine and at 120 days old with oil adjuvant inactivated vaccine (full dose). The mean HI antibody titres for vaccinated groups of Treatment-1 and Treatment-2 revealed at day-10 (69.71 and 70.39), day-24 (19.73 and 24.34), day-31 (57.85 and 53.72), day-60 (251.52 and 76.34), day-120 (50.30 and 26.28) and day-150 (442.71 and 371.80) respectively. Vaccination program used in Treatment-1 gave better humoral immune response than in Treatment-2.
  M. M. Rahman , M. Hussain , M. M. Hussain , Masroor Anwer , A. B. Siddique and M. Nuruzzaman
  An investigation was made at farmers level of Kishoregonj and Manikganj, the two important jute growing areas of Bangladesh in order to enumerate the water management status in jute production in terms of farmers actual practices and their feeling of need about the same. Results revealed that average 64% farmers at Kishoregonj and 69% at Manikganj felt the necessity of irrigation, whereas 13 and 40% farmers at Kishoregonj and Manikganj actually practiced the same respectively. Similarly, 79 and 70% of farmers at Kishoregonj and Manikganj respectively felt the necessity of draining out the excess water from their jute field but 70 and 52% farmers actually practiced the same respectively. The difference between farmers feeling and actual practice on irrigation was wide while the difference between farmers feeling and actual practice on draining out the excess water was narrow which clearly showed the importance of drainage over irrigation in jute production at farmers level. But the statistical significant difference between feeling need and actual practice for improved water management are yet to prevalent over what farmers got from their forefathers.
  Ahmed, S. , M. A. Awal , M. M. Rahman and M. Mostofa
  Comparative efficacy of neem and karela with insulin and glibenclamide was studied on some lipid profile(total cholesterol, triglyceride, HDL cholesterol and LDL cholesterol) in 40 rabbits from February to April, 2003. Rabbits were randomly divided into 8 equal groups and rabbits of group A and B were kept as non hyperglycemic control and hyperglycemic control respectively. Hyperglycemia was induced in 7 groups of rabbits (B, C, D, E, F, G and H) by administering alloxan at a dose of 200 mg/ kg body wt. s/c. After 15 days of alloxan injection, 6 groups of rabbits (C, D, E, F, G and H) were treated with insulin, glibenclamide, neem seed kernel powder (NP), neem seed oil (NSO), neem leaf extract (NLE) and karela fruit juice (KFJ) at the dose rate of 5 U/kg, 0.5 mg/ kg., 500 mg/kg , 1 ml/kg , 500 mg/ kg and 100 mg/kg body weight respectively for consecutive 28 days. All the control and treated rabbits were closely observed during pre-treatment, 28 days of treatment and also for 14 days of post-treatment period and the lipid profile was investigated. Due to alloxan induced diabetes the content of total cholesterol increased significantly (P<0.01) in all groups except the normal control group A. On 28th day of treatment period the amount of total cholesterol, serum triglyceride, HDL cholesterol and LDL cholesterol were significantly(P<0.01) reduced to extent of 15-30%, 15-46%, 15-25% and 16-32% respectively that were close to the initial value before the commencement of dosing(day 0) except with KFJ which had very little effect(15%). Glibenclamide reduced the triglyceride level to a greater extent (46%) than other drugs. Insulin and glibenclamide showed similar efficacy (25%) in reduction of the serum HDL cholesterol level and (31-32%) in LDL cholesterol level. It was observed that patent drugs insulin and glibenclamide induced better and almost equal efficacy in reducing the parameters whereas herbal preparations of neem, i.e., NP, NSO and NLE showed almost equal but less efficacy than two patent drugs and Karela fruit juice was found to be least effective. It may be concluded that instead of less efficacy than patent drugs, the efficacy of neem and karela was also encouraging.
  S. Ahmed , M. A. Awal , M. M. Rahman and M. Mostofa
  Comparative efficacy of neem and karela with insulin and glibenclamide was studied on some biochemical parameters (Blood glucose, Serum urea and Serum creatinine) in 40 rabbits from February to April, 2003. Rabbits were randomly divided into 8 equal groups and rabbits of group A and B were kept as non hyperglycemic control and hyperglycemic control respectively. Hyperglycemia was induced in 7 groups of rabbits (B, C, D, E, F, G and H) by administering alloxan at a dose of 200 mg/ kg body wt. s/c. After 15 days of alloxan injection, 6 groups of rabbits (C, D, E, F, G and H) were treated with insulin, glibenclamide, neem seed kernel powder (NP), neem seed oil (NSO), neem leaf extract (NLE) and karela fruit juice (KFJ) at the dose rate of 5 U/kg, 0.5 mg/ kg., 500 mg/kg , 1 ml/kg , 500 mg/ kg.and 100 mg/kg body weight respectively for consecutive 28 days. All the control and treated rabbits were closely observed during 28 days of treatment and also for 14 days of post-treatment period and biochemical parameters were investigated. Blood glucose levels were significantly (P<0.01) reduced in all treated six groups of rabbit to the extent of 25-42% in comparison to their pre-treatment values. Similarly, serum urea and creatinine values were reduced significantly (P<0.01) to the extent of 15-25% and 4-15% respectively on 28th day of treatment in comparison to their 21th day treatment values. It was also observed that patent drugs insulin and glibenclamide induced better and almost equal efficacy in reducing the parameters whereas herbal preparations of neem, i.e., NP, NSO and NLE showed almost equal but less efficacy than two patent drugs and Karela fruit juice was found to be least effective. It may be concluded that instead of less efficacy than patent drugs, the efficacy of neem and karela was also encouraging.
  M. M. Rahman , Zahed U. M. Khan and S.M. H. Rashid
  An inactivated Salmonella vaccine was prepared from 5 x 107 cells of Salmonella gallinarum to assess the potential protective efficacy of Salmonella gallinarum vaccine. Specific pathogen free(SPF) hens were vaccinated at 6 weeks and 10 weeks of age and challenged orally at 14 weeks of age with 107 cells of homologous Salmonella gallinarum strain. The nonvaccinated chickens were also challenged with same number of Salmonella gallinarum cells. The antibody titers of the vaccinated hens were detected by rapid serum plate agglutination test(RSPAT) and tube agglutination test. Non-vaccinated hens were observed for 28 days for their changes. Rapid serum plate agglutination test and tube agglutination test revealed that the antibody titers of vaccinated hens rose quickly reaching peak at 8th week post vaccination and were still high at 12th week post vaccination. After challenge, antibody titers were also high and were gradually decreasing upto 20 weeks post vaccination. No antibody titer was detected in non-vaccinated control group.
  F. B. Aziz , M. A. Awal , Q. Hasan and M. M. Rahman
  Ectoparasites are distributed all over the world but occur mainly in tropical and sub-tropical countries. Ectoparasites result in a considerable amount of blood loss, disturbances in feeding, retarded growth and decreased production. Among the ectoparasiticides ivermectin is a new endectocide and diazinon is another commonly used ectoparasiticide available in Bangladesh. The present research was designed to study the comparative efficacy of ivermectin and diazinon against ectoparasites, their effects on some clinical, hematological and biochemical parameters in sheep. For this purpose 25 sheep heavily infested with ticks and lice were randomly divided into 5 equal groups, i.e. groups B, C, D, E and F. Another group of 5 sheep free from parasitic infestation were also selected and kept as uninfected control (group A) and group B was kept as infected control group. The sheep of groups C and D were treated with recommended (200 g/kg b.w.) and higher than recommended (300 g/kg b.w.) doses of ivermectin subcutaneously. The sheep of groups E and F were treated with diazinon (spray) at recommended (0.1% soln.) and higher than recommended (0.2% soln.) doses. After injection of ivermectin and spray of diazinon all four treated and two groups were kept for 28 days and clinical, hematological and biochemical parameters were investigated at 7 days intervals. The data were collected and analyzed statistically between control and treated groups by using student ‘t` test . On the basis of lice and tick count, the efficacy of ivermectin was found 100% whereas diazinon was 82-85% effective against ectoparasitic infestation in sheep. Ivermectin and diazinon increased the feeding efficiency as compared to infected control groups. No adverse effects was observed following both the dose of ivermectin and recommended dose of diazinon. In this study, the hematological parameters, i.e. TEC and Hb% were increased significantly (p<0.01) in all treated four groups to the extent of 35-70% and 10-21% respectively. On the other hand, ESR values were decreased significantly (p<0.05). No significant change was observed on SGOT and SGPT following both the doses of ivermectin injection. However, SGOT and SGPT values were significantly (p<0.01) increased to the extent of 46-90% and 25-46% within 7-14 days of diazinon spray. However, elevated values of SGOT and SGPT became almost normal within 28 day of treatment. Among the recommended and higher than recommended doses of ivermectin and diazinon, the recommended dose of both the drugs is suitable for therapeutic purpose. Among the two drugs, ivermectin was found to be the best drug against ectoparasites showing prompt and 100% efficacy.
  M.S. Islam , M.A. Mazed , M.A. Islam , M. A. Kadir and M. M. Rahman
  The study was conducted at two dairy farms namely, Government Dairy Farm, Faridpur and Central Cattle Breeding Station, Savar, Dhaka to investigate the effect of age of first service, conception rate, age at first calving, birtgh weight of calves and calving intervals on some reproductive parameters of Local X Freisian upgraded Dairy cows. From the study, it was revealed that average age at first service was 29.21?1.11 months. Means of the conception rate of different cows were 63.00?16.73 for artificial insemination and 85.00?17.17 for natural services. Average age at first calving was 39.30?4.53 months. Mean birth weight of calves of the representative cross bred was 15.32?0.78 kg. Average calving interval was 438.60?33.90, 435.75?32.35 and 424.37?38.66 days for first, second and third lactation, respectively. It may be concluded that the reproductive characters of Local X Friesian upgraded dairy cows are moderately standard and can be reared under Bangladeshi condition.
  M. M. Rahman , P. M. Das , A. S. M. Bari , M. R. Islam and M. M. Rahman
  A pathological investigation was carried out at three different broiler farms around the Bangladesh Agricultural University, Mymensingh from day-old chicks up to marketing. The diseases were diagnosed both grossly and microscopically as aspergillosis, salmonellosis, choline deficiency, yolk sac infection, mycoplasma-colibacillosis complex, hydropericardium hepatitis syndrome, infectious bursal disease and pneumonia, with the case fatality rate of 77.97, 73.91, 66.67, 56.25, 50.00, 36.36, 33.33 and 18.57%, respectively. In farm no. 1, yolk sac infection, mycoplasmosis-colibacillosis complex and infectious bursal disease were diagnosed pathologically, with the morbidity and mortality rate of 2.00, 1.50, 2.25, 1.25, 1.00 and 0.50%, respectively. In farm no. 2, yolk sac infection, salmonellosis, aspergillosis, infectious bursal disease, mycoplasmosis-colibacillosis complex, hydropericardium hepatitis syndrom, pneumonia and choline deficiency were confirmed both grossly and microscopically, their morbidity and mortality rate were 1.11, 5.10, 12.00, 0.44, 0.88, 2.67, 0.67, 0.67, 0.44, 3.75, 10.00, 0.44, 0.22, 0.88, 0.22 and 0.44%, respectively. In farm no. 3, pneumonia, yolk sac infection, mycoplasmosis-colibacillosis complex, aspergillosis and hydropericardium hepatitis syndrome were diagnosed by gross and microscopic examination, their morbidity and mortality rate were 0.87, 0.65, 1.96, 1.08, 4.56, 0.22, 0.22, 1.09, 0.22 and 1.74%, respectively. The findings indicate that aspergillosis is the major disease problem in broiler farming in Mymensingh.
  M. Uddin , M. M. Rahman , M. A. Hoque and S. Begum
  The field experiment was conducted in a silt loam soil to compare the effect of N, P and K fertilizers on the yield and nutrient uptake by rice and post-harvest soil properties. Seven treatments were T0 (control), T1 (Urea + Triple superphosphate + Muriate of potash), T2 (Urea + Diammonium phosphate + Muriate of potash), T3 (Urea + Triple superphosphate + Ash), T4 (Urea + Single superphosphate + Muriate of potash), T5 (Urea + Single superphosphate + Ash) and T6 (Urea + Diammonium phosphate + Ash). Application of fertilizers significantly increased the grain and straw yields of rice. Panicle length, effective tillers hill-1 and filled grains panicle-1 were also increased significantly due to application of fertilizers but the increase of 1000-grain weight was insignificant. Grain yield was highest with T3 (Urea + Triple superphosphate + Ash) treatment (5.46 t ha-1) which was followed by T1 (Urea + Triple superphosphate + Muriate of potash) treatment (5.30 t ha-1), while the lowest was in control. The grain yields were increased by 47.0 to 68.0% over control due to application of fertilizers. The results on straw yield reflected similar trend as in grain yield. Application of fertilizers caused a significant increase during NPKS uptake by rice. The application of fertilizers had a negligible influence on pH, CEC, organic matter, total N, available P, exchangeable K, and available S content of the post-harvest soils compared to their initial status.
  M. M. Rahman , B. N. Islam and M. N. Bari
  Methanolic and acetone extracts of seeds of Pithraj, Amoora ruhituka ( Wright & Arn.) were tested on rice hispa, Dicladispa armigera (OLV.) to know the effects of the extract in relation to the feeding behaviour, ovipositional behaviour and adult emergence of rice hispa. The food consumption on treated seedlings was very poor. The deterrent action of PSE and BSE were high and egg deposition ranges 0-13 in 48 hours and 0-8 in 72 hours of exposure to treated rice seedlings. In controls, egg deposition ranged from 0-28 in 48 hours and 0-18 in 72 hours respectively. Low emergence of rice hispa in all treated rice seedlings indicated the high degree of inhibition effect of the extracts on adult emergence. The adult emergence in control (MeOH and Water) were significantly higher than those on treated seedlings.
  M. M. Rahman and K. S. Huque
  The fresh and chopped banana plants were compared with that of the ensiled materials having them fed to mature bulls. Sixteen (16) young bulls approximately 3 years of age and weighing approx. 370 kg were used. The bulls were divided into 4 groups and were randomly allocated to the experimental diets e.g., T1 = banana pseudostem ensiled with 5% molasses, T2 = banana pseudostem ensiled with 5% molasses and 10% straw, T3 = chopped fresh banana pseudostem with 5% molasses, T4 = urea (3%)-molasses (15%)-straw (82%). All the diets were enriched with 3% urea. All the animals received 60 g/d of mineral 4 supplement including sodium sulphate and dicalcium phosphate. The daily average dry matter intake in percent live weight was 1.33, 2.73, 1.20 and 2.50, respectively. Dry matter digestibility was significantly (p<0.01) higher in the T2 (78%) fed animals than T1 (59%), T3 (65%) and T4 (62%). In T2 and T3 diets NH3 -N concentration were relatively high which ranged from 54.87 to 238.56 mg/L and 42.15 to 188.47 mg/L, respectively. The 48 h in sacco degradability of washed straw in response to feeding T1 , T2 and T3 diets were 50, 51 and 51%, respectively. The ME intake was significantly (p<0.01) higher in T2 (1300 KJ/kg W0.75 /d) than that of T3 (945 KJ/kg W0.75 /d), T4 (498 KJ/kg W0.75 /d) or T3 (515 KJ/kg W0.75 /d). It may be concluded that both the preserved and fresh chopped banana whole plants had digestibility of 59 to 78% and their intake in native bull ranged from 1.20 to 2.73% live weight.
  M. M. Rahman , M. N. Islam , S. Faruque and B. K. Roy
  Calving records with sex ratio of births were studied in summer, monsoon and winter of local, crossbred and purebred cows. The higher percentage of birth found during summer (39.07%) followed by winter (32.79%) and monsoon (28.14%) and female and male ratio were 48.25:51.75; 44.66:55.34 and 40.83:59.17, respectively in summer, monsoon and winter in local cows; whereas in crossbred cows, birth percentage is highest in summer (36.96%) followed by winter (35.98%) and monsoon (27.06%) and no significant difference were found on sex ratio of births of crossbred cows. The highest percentage of birth of purebred at Holstein-Friesian and Sahiwal cows are noted in winter (40.93%) followed by monsoon (30.48%) and summer (28.59%) and no significant difference were found on sex ratio of births of purebred cows in different seasons.
  M. K. Uddin , M. R. Islam , M. M. Rahman and S. M. K. Alam
  A field experiment was conducted to study the effects of S, Zn and B supplied from chemical fertilizers and poultry manure on yield and nutrient uptake by rice (cv. BRRI Dhan-30). There were ten treatments:- T0, T1, T2, T3, T4, T5, T6, T7, T8 and T9. The rate of different nutrients were 100 kg N ha‾1 from urea, 30 kg P ha‾1 from TSP, 60 kg K ha‾1 from MP, 20 kg S ha‾1 from gypsum, 2 kg Zn ha‾1 from zinc oxide, 1 kg B ha‾1 from borax and 4 t poultry manure ha‾1. The experiment was laid out in randomized complete block design with 3 replications. The different nutrients significantly increased plant height, effective tillers hill‾1, filled grains panicle‾1, 1000-grain weight, grain and straw yields of rice. The highest grain yield of 4850 kg ha‾1 was obtained when S, Zn and B were applied together with NPK fertilizers (T8) which was comparable to the yields obtained when S, Zn or B were applied singly or in combination of two with NPK fertilizers (T2, T3, T4, T5, T6 and T7) and also with the application of poultry manure with reduced NPK application (T9). The concentrations and uptake of N, P, K and S by grain and straw were higher when poultry manure was used as a source of S, Zn and B with reduced amount of NPK(T9). It appears that application of S, Zn and B along with NPK is essential in this soil to get maximum yield of BRRI Dhan-30. If poultry manure can be applied @ 4 t ha‾1 the use of NPK can be reduced and S, Zn and B fertilizers may not be needed.
  S. A. Nashrin , A. M. Farooque , M. K. Siddiqua , M. M. Rahman and M. R. Khanam
  The experiment was conducted to study the effect of different levels of nitrogen and spacing on the growth and yield of Gimakalmi. Four nitrogen levels viz., 0, 30, 50 and 60 kg N/ha and four levels of spacing viz., 30 x 10 cm2, 30 x 15 cm2, 30 x 25 cm2 and 30 x 30 cm2, were included in this experiment. The maximum plant height, number of leaves per plant, number of branches per plant, fresh weight of leaves per plant, fresh weight of stems per plant, were observed in the above nitrogen application and plant spacing. The highest yield (6.10 t h‾1 ) was obtained at 60 kg N ha‾1 at 90 days after sowing (DAS), whereas the lowest yield 3.58 t/ha in control treatment. The maximum growth and yield of the plant were observed in 30 X 30 cm2 and 30 X 10cm2 spacing at all the dates of harvests. The highest yield 6.10 t ha‾1 was found at the closest spacing (30 X 10cm2) whereas the lowest yield 4.15 t ha‾1 in the widest spacing 30 X 30 cm2 at 90 DAS .
  M. N. Islam , M. N. Islam , M. M. Rahman and S. Faruque
  In the study areas records of 100 dairy cows collected from small holder dairy farms out of which were 20 Friesian cross, 19 Sahiwal cross, 29 Sindhi cross, 32 indigenous dairy cows. Those dairy farm were considered to evaluate post partum heat period, dry period, services per conception (SPC), age at first calving, calving to first service, lactation period and calving interval. The average post partum heat period of Friesian cross, Sahiwal cross, Sindhi cross and indigenous dairy cows were 98.75 ± 40.58, 97.63 ± 36.03, 114.65 ± 21.54 and 108.46 ± 36.32 days, respectively and the average length of dry period were 127 ± 46.66, 136.05 ± 23.42, 138.39 ± 41.78 and 170.00 ± 68.89 days, respectively. The average services per conception for Friesian cross, Sahiwal cross, Sindhi cross and indigenous dairy cows were 1.65 ± 1.65, 2.05 ± 1.17, 2.206 ± 1.01 and 1.41 ± 0.56, respectively and age at first calving were 36.25 ± 3.48, 37.26 ± 3.01, 37.65 ± 5.21 and 40.03 ± 3.54 months, respectively. Calving to first service of different crossbred and indigenous dairy cows were 109+ 37.26, 114.47 ± 38.89, 113.10 ± 27.20 and 124.53 ± 43.33 days and calving interval were 373.25 ± 35.25, 383.42 ± 34.44, 397.77 ± 37.07 and 418.78 ± 36.74 days, respectively. The length of lactation period of different crossbred and indigenous dairy cows was 253 ± 24.73, 256.31 ± 24.31, 255.86 ± 27.58 and 230.62 ± 30.68 days, respectively. The post partum heat period and calving to first service did not differ significantly among the different crossbred and indigenous dairy cows. The traits like, services per conception, age at first calving, calving interval and lactation period however differed highly significantly (P<0.01). The dry period also significantly (p<0.05) different among the genetic groups. The results obtained in this study indicated the reproductive performances of crossbred cows were superior to indigenous cows.
  M. S. A. Khan , M. J. Alam , S. Rheman , S. Mondal and M. M. Rahman
  The fecundity and gonado somatic index (GSI) of Plotosus canius during its peak breeding seasons were studied. Fecundity of P. canius during its peak breeding season April to August of size range 36.5 to 69.2 cm varied from minimum 1180 in April and maximum 2250 in July. Fecundity showed a linear relationship to total length, body weight and ovary weight. The linear relationship between weight and fecundity was more valid than that of length and fecundity. The results of correlation regression equation of total length-fecundity, body weight-fecundity and gonad weight-fecundity were (r=0.832619), (r=0.933599) and (r=0.96118). On average 2.3718 ova are produced in pre gram-weight of body. Study on gonado somatic index indicated that mature fish become available from April to August, the peak being July.
  P. K. Sarker , H. K. Pal , M. M. Rahman and M. M. Rahman
  Investigations on the fecundity and gonado-somatic index (GSI) of Mystus gulio were carried out from March 1999 to December 2000. Fecundity was determined at different length, weight and ovary ranges of different individual fishes. At different length ranges from 10-20cm of fish showed different fecundity and significantly highest mean fecundity was found 21589 (19394-23481) from 20-22 cm length ranges of fish. Whereas significantly lowest mean fecundity was 11887 (11436-12712) from 10-12cm length ranges of fish. Fecundity was also determined from a wide weight ranges (15-110g) of fishes. Study revealed that significantly highest mean fecundity was found 22546 (19741-23009) from 90-110g weight ranges of fishes. Whereas lowest mean fecundity was 10982 (10831-12481) from 15-20g ranges of fish. Ovary weight ranges from 16-18g showed significantly highest mean fecundity 21378 (19611-22825). This study stated that the fecundity of fish increased with the increase in size, weight and gonad weight as well. The highest GSI values were found in July. Furthermore, GSI showed that M. gulio has a wide spawning season.
  S. Faruque , S. S. Husain , M. M. Rahman , B. K. Roy , M.N. Islam and M.S. Islam
  In this study sixty three farmers mainly from land-less and small category, having some previous experience of rearing goats were selected. There were three genetic groups viz. I) jamunapari male × black bengal female ii) selected black bengal male × selected black bengal female and iii) random black bengal. Feeding and management systems of keeping goats were almost similar. No extra inputs were provided to them except grazing from morning to evening. The main objective of this study was to investigate the effect of selection and crossbreeding in black bengal goats on various reproductive characteristics. Traits considered for the present study were age at puberty, number of services per conception, gestation length, litter size, age at first kidding, post partum heat period, kidding interval, abortion rate and survival rate of kids. Analysis of variance indicated a highly significant (p<0.01) effect of genetic groups on post-partum heat period, kidding interval and abortion rate. Gestation length was significantly (p<0.05) affected by genetic groups. Age at puberty, number of services per conception, litter size, age at first kidding and survival rate were not affected significantly (P>0.05) by genetic groups.
  M. A. Baset , M. M. Rahman , M. S. Islam , G. B. Das and A. Ara
  Cattle fattening for beef production have become an important business of the small former in Bangladesh. In few areas of Bangladesh a small scale commercial beef fattening program has already been started. Straw is the important crop residue; contribute the major portion of the fibrous part of the diet of the beef cattle. Rice straw is the basal feed for ruminants with low nutritive value and low digestibility. Farmers use rice straw of traditional verities, green grass, sugarcane tops, wheat and rice bran, molasses, pulses bran and locally available resources such as pumpkin, carrot, bananas, vegetables by products, rice gruel, boiled rice bran, oil cakes etc., for beef fattening. The chemical treatment of straw is the most effective and economic method to improving the quality. Straw is mainly treated with urea and molasses and in some cases chemical treatment also done by the former. Urea molasses straw treatment in beef cattle resulted higher body weight, dressing percentage and also in better carcass quality than untreated straw. The acute shortage of feeds and fodder has long been identified as a serious constraint to optimum livestock production in Bangladesh. The nutritional factor is considered a major constraint to livestock productivity. Traditional grazing field is a scarce except in some pockets in Pabna and Sylph districts. Farmers used three years old cattle for beef fattening and maximum growth rate between 1.1 year to 1.4 years of age. Cattle fattening period is 4.5 months in rural areas of Bangladesh.
  M. Giasuddin , B. K. Sil , J. Alam , I. Koike , M. R. Islam and M. M. Rahman
  The postmortem and serological investigations of poultry diseases were conducted in different farms of Bangladesh. A total numbers of 1653 either dead or sick birds were examined. The incidence of aflatoxicosis was highest (27.59%) followed by nutritional deficiency (12.40%), infectious bursal disease (11.80%), chronic respiratory disease (8.11%) newcastle disease (7.50%) salmonellosis (5.56%) colibacillosis (4.42%), fowl cholera (3.08%) were found. 5.32% cases remain undiagnosed due to lack of diagnostic facilities or autolysis of the bird. In sero-evaluation, commercial and native birds were found 93-97, 80 -55, 56-12, 60-73, 67-61 and 22-3% sero-positive for newcastle disease, infectious bursal disease, pullorum, M. galisepticum, M. synovie and chicken infectious anemia respectively.
  P. K. Sarker , S. Rahman , M. M. Rahman , S. C. Chakraborty and M. N. Islam
  A laboratory trial was conducted on the protein digestibility of rohu (Labeo rohita) fingerlings in a static indoor fish rearing water system of glass made aquaria (90 cm x 30 cm x 30 cm) for a period of 75 days. Each treatment had two replicates containing 12 fingerlings. Five experimental diets A, B, C, D and E were prepared from different combination of five major sources of protein viz., fish meal, protein concentrate, meat & bone meal, mix of animal protein sources and mix of plant protein sources each containing 33% dietary protein level. The apparent protein digestibility (APD) values of the above mentioned diets were 81.70, 78.66, 75.53, 72.53 and 69.96%.
  M.S.K. Sarker , S.U. Ahmed , S.D.Chowdhury , M. A. Hamid and M. M. Rahman
  Three hundred commercial broiler chicks of three different strains ( Arbor Acres, ISA Vedette and Hybro) each of 100 were reared from day-old to 6 weeks of age to compare their performance characteristics under Bangladesh condition in winter. Body weight gain and feed consumption up to 6 weeks of age were significantly higher in ISA Vedette than in Arbor Acres and Hybro. There was no significant difference between Arbor Acres and Hybro with respect to these variables. Survivability and feed efficiency among the strains were non-significant, although Arbor Acres showed slightly higher survivability than Hybro and ISA Vedette. Despite a slightly higher livability in Arbor Acres, it may be concluded that ISA Vedette may perform the best in winter than in Hybro and Arbor Acres. The later two strains may also be recommended for commercial boiler production in winter, but priority may be given to ISA Vedette strain.
  M. M. Rahman , A.B.S.M. Osman Gani , M.A. Choudhury and M.H. Rahman
  The binding of dexamethasone phosphate (DP) and testosterone phenyl propionate, (TPP) two semisynthetic steroids, to bovine serum albumin (BSA) was studied by equilibrium dialysis method at 25°C and pH 7.4 with a view to have an insight into the competitive binding characteristics of these two drugs, when bound to BSA simultaneously. There was increase in free concentration of DP due to addition of TPP and vice versa during concurrent administration of these two drugs, thereby causing reduced binding of these two drugs to BSA. However, the free fraction was not increased up to a level as it was expected from direct competitive displacement. In absence of the site I specific probe (warfarin sodium), DP after being displaced by TPP or vice versa from its high affinity binding site (site II) rebound to its low affinity binding site (site I) on BSA. However, when the site I was sufficiently blocked by warfarin, the increment in the free concentration of the displaced drug was more prominent. This form of modified displacement has been referred to as site-to-site displacement.
  M. S. Rahman , M. A. H. Khan , M. M. Rahman and M. Ashrafuzzaman
  Effect of rice husk, sawdust, ash and burnt soils as mulches on the growth attributes of onion was studied. Significant variations were observed in plant height, root length, total dry matter accumulation, leaf area index (LAI), crop growth rate (CGR) and net assimilation rate (NAR), whereas relative growth rate (RGR) was found nonsignificant in all stages of growth. Root: shoot ratio was significantly different at the early stages of growth (30 to 60 DAT) and thereafter it was found nonsignificant. All the mulches had positive effect on growth attributes over the control and the use of ash as mulch was found better compared to the other three.
  S. Rahman , M. M. Rahman , S. U. Ahmed and M. R. Kawser
  A study was undertaken to evaluate the possibility of utilizing natural brackishwater (from Shibsa River) in the hatching operation and larvae culture of Macrobrachium rossenbergii. Three treatments each with three replications were tested. Natural brackish water diluting by rainwater (T1), natural brackishwater diluting by under ground tap water (T2) and natural brackish water with salinity range from 12 to 20 ppt. (T3) were considered. In case of dilution (in T1 and T2) salinity concentration range was maintain from 4-18 ppt as per requirement of the experiment and stage of brood and larvae. Significant higher survival (23.38%) for T1 was observed followed by T3 with 13.63% and T2 with 4.38% up to post larvae (PL) stage. Significant (p<0.05) difference in survival rate of larvae between T1 and T2 and T2 and T3 was observed. Study reveals that natural brackishwater diluting by rain water can be effectively used in the hatching operation and larvae culture of the freshwater giant prawn, M. rossnbergii.
  Kamruzzaman M. , M. N. Islam , M. M. Rahman , S. Parvin and M. F. Rahman
  Different types of dahi were prepared by using banana juice and the prepared dahi samples were divided into two group having all types of dahi in each group. One group was covered with paper on the top of the cup and another group was without covered and were kept inside the refrigerator having a temperature of approximately 50 oC for a 16 days storage period. The removal of moisture percentage was measured every four days of interval during storage. The evaporation rate (gm/d) of dahi samples was also calculated by how much amount of water was removed per day during storage. The removal of moisture percentage and evaporation rate (g/d) of dahi samples of with cover group was lower than that of dahi samples of without cover group and evaporation rate of dahi samples of both with cover and without cover group was increased gradually due to incorporation of banana juice.
  M. Kamruzzaman , M. N. Islam and M. M. Rahman
  Two types of dahi were prepared. One type was prepared by using 10, 20 and 30% banana juice with whole milk and another one (plain dahi) was prepared by using whole milk only. Dahi samples were stored both in room temperature and refrigeration temperature until deterioration. During storage samples were analyzed for getting the organoleptic quality (Smell and Taste, Body and Consistency, Colour and Texture), percentage of acidity and pH value. Organoleptic quality and pH value of different types of dahi samples decreased but acidity percentage increased during storage at both room and refrigeration temperature. Plain dahi was in good condition up to 3 days of storage period and banana juice based dahi was up to 2 days only at room temperature. On the other hand, at refrigeration temperature plain dahi was suitable for consumption up to 12 days and banana juice based dahi was up to 8 days. Keeping quality of banana juice based dahi was lower than that of plain dahi both under room and refrigeration temperature.
  B. K. Roy , K. S. Huque , M. R. Islam , M. Hasanuzzaman and M. M. Rahman
  The present study examines the consumption pattern of milk and milk products among different income groups in some selected areas in Bangladesh. Family budget data were collected through household survey during September` 01 to May 2002 for 179 selected households from the three different areas of Bangladesh, comprising 44 from Rural, 61 from Municipality town and 74 from Metropolitan city households formed the basis. The sample households were post classified into 5 income groups based on monthly household income as follows: (I) < Tk. 3000; (II) Tk. 3001-6000; (III) Tk. 6001-9000; (IV) Tk. 9001-12000 and (V) >Tk. 12000. Among milk and milk products, the major allocation of expenditure was devoted to liquid milk followed by sweetmeats and powder milk and `other milk products`. The municipality town households consume more milk, sweetmeats and dahi than Rural and Metropolitan city. On the other hand, Metropolitan households consume more powder milk, condensed milk, ghee and ice cream. Milk and some milk products consumption and expenditure on it increased substantially, with the increase of income in all the areas.
 
 
 
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