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Articles by S.M.L. Kabir
Total Records ( 4 ) for S.M.L. Kabir
  S.M.L. Kabir , M.M. Rahman , M.B. Rahman , M.M. Rahman and S.U. Ahmed
  The research work was conducted on "Hubbard Isa Starbro" broilers to evaluate the dynamics of probiotics relating to live weight gain, carcass yield, weight of cut up meat parts and immune response. Day old broiler chicks were divided into four groups as group A (Vaccinated probiotics fed group), B (Nonvaccinated probiotics fed group), C (Vaccinated conventional fed group) and D (Nonvaccinated conventional fed group). Groups C and D were taken as control birds fed with commercial ration and groups A and B as experimental birds were fed with commercial ration with the addition of 2gm probiotics (Protexin® Boost)/10 litres drinking water upto 6th week of age. The result evidenced the following information: (a) The live weight gains obtained were significantly (p<0.01) higher in experimental birds as compared to control ones at all levels during the period of 2nd, 4th, 5th and 6th weeks of age, both in vaccinated and nonvaccinated birds. (b) A significantly (p<0.01) higher carcass yield occurred in broiler chicks fed with the probiotics on the 2nd, 4th and 6th week of age both in vaccinated and nonvaccinated birds. The weight of leg was found significantly (p<0.01) greater for experimental birds as compared to control ones on the 2nd, 4th and 6th week of age. A significantly (p<0.01) higher breast weight in broiler chicks fed with the probiotics was observed on the 4th and 6th week of age. Analogously a significantly (p<0.05) higher breast portion weight was found in experimental birds as compared to control ones during 2nd week of age. (c) The antibody production was found significantly (p<0.01) higher in experimental birds as compared to control ones. Significant differences were also observed in the weight of spleen and bursa due to probiotics supplementation. The results of the study thus revealed that probiotics supplementation promoted significant influence on live weight gain, high carcass yield, prominent cut up meat parts and immune response.
  M.B. Rahman , M.M. Rahman , M. Rahman , S.M.L. Kabir , K.H.M.N.H. Nazir and M.M. Amin
  Thirty day-old chicks of Cobb-100 breed with the history of vaccination of parent stock against Newcastle disease (ND) were equally divided into two groups such as group A and B. At 7 days of age of birds, group A was vaccinated with experimentally prepared V4HR-ND vaccine via eye drop @ 106.0EID50/bird to determine the efficacy of this vaccine while group B was kept as unvaccinated control. The birds were used for the study during the period from October 2003 to December 2003. Each bird of group A was boostered with same vaccine @ same dose at 24 days of age. Both the groups (A and B) were challenged after two weeks of post-booster vaccination with 0.25ml inoculum containing 105.0EID50 of virulent field isolates of ND virus intramuscularly. The results of challenge experiment revealed that six birds (40%) of group A succumbed within 3 to 4 days of post-challenge, whereas 15 (100%) unvaccinated control birds of group B showed clinical illness and ultimately died within 3 to 5 days. Thus, the experimental V4HR-ND vaccine conferred 60% protection of vaccinated birds against challenge infection. The mean values of Haemagglutination inhibition (HI) antibody titres of birds in group A were found to have significantly (P<0.01) increased at two weeks of post-booster vaccination. These results indicated that experimental V4HR-ND vaccine induced sufficient humoral immune response which gives satisfactory level of protection against ND.
  M.S.I. Akand , K.A. Choudhury , S.M.L. Kabir , S.K. Sarkar and K.M.R. Amin
  An experiment was conducted to develop washed cell fowl cholera (WCFC) vaccine with virulent avian Pasteurella multocida (PM 38) serotype 1 (X-73). A total of 20 Fayoumi birds of either sex of 10 weeks aged were divided into two groups as group A (immunized with washed cell fowl cholera vaccine) and group B (unvaccinated control). Primary vaccination was given through IM route in each birds of group A and booster dose was given through SC route after 15 days of primary vaccination. The presence of antibody against P. multocida was determined by slide agglutination test (SAT) and growth inhibition test (GIT). The degree of antibody levels of prevaccination and post vaccination sera were determined by passive haemagglutination assay (PHA). Sera mean PHA titres at 15, 21, 28 and 42 days post-vaccination in group A were 30.4±4.43, 46.4±6.06, 67.2±11.14 and 134.4±22.28 respectively. The present results revealed that WCFC vaccine worked satisfactory in terms of protection rate against Avian Pasteurellosis. It was also demonstrated that experimental WCFC vaccine conferred 80% protection against challenge infection when all chickens of control group failed to survive against challenge infection.
  K.M.R. Amin , M.B. Rahman , S.M.L. Kabir , S.K. Sarkar and M.S.I. Akand
  The study was carried out to investigate the serological epidemiology of brucellosis in cows of Mymensingh districts of Bangladesh. Out of 250 animals tested, 2% showed positive reaction. The higher prevalence of bovine brucellosis was recorded in pregnant cows (3.45%) than non-pregnant cows (1.23%). The age wise prevalence of brucellosis in cows older than 4 years of age were found to be more susceptible to infection. The prevalence of brucellosis in cows above four years of age was recorded 2.56% whereas, 1.10% positive cases were found in cows having less than 4 years of age. The prevalence of brucellosis in cows with repeat breeders, previous abortion and retention of placenta was recorded 1(1.64%), 3(12%) and 2(7.41%) respectively. The highest prevalence was recorded in cows with a history of previous abortion. The prevalence was higher in retention of placenta in comparison with repeat breeder cases.
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