Browsing by Author "DAS, MITA RANI"

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    BACTERIAL LOAD IN THE FECES OF RABBIT AT DINAJPUR DISTRICT OF BANGLADESH
    (HAJEE MOHAMMOD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR, 2017-06) DAS, MITA RANI; Dr. Farzana Afroz
    The present study was conducted to identify the bacterial load in feces of rabbit and to identify their effects on growth performance of rabbit of Dinajpur Upazilla, Dinajpur. The samples were analyzed to determine the total viable count, prevalence of gram negative bacteria, Eschrechia coli and Salmonella spp. The rabbit were categorized into three (3) groups namely group A, group B and group C according to their body weight gain at same age and different feeding management. They reared in intensive system. For the determination of bacterial load a total of 30 samples were tested. From this study the result represented that the total viable counts/g feces in group A, group B and group C were 1.2 × 104 , 2.4 × 106 , 3.5 × 107 CFU/g sample respectively, the E. coli counts/g feces in group A, group B and group C were 2.5 × 103 , 5.5 × 105 and 4.5 × 106 CFU/g of sample respectively and Salmonella spp. counts/g sample on group A, group B and group C were 1 × 102 , 2.1 × 102 and 3 × 103 CFU/g feces respectively. The study showed that group C had highest bacterial load 3.5 × 107 CFU/g (7.54 Log 10/g) and average body weight these group rabbits 1 kg. In group A had lowest bacterial load 1.2 × 104 CFU/g sample (4.08 Log10/g) and average body weight these group rabbits 1.5 kg. where the prevalence of E. coli present in 13 sample was 43.33%, group A- 30%, Group B -40% and group- C 60%, and the prevalence of Salmonella spp was present in 7 samples was 23.33%, group A- 10%, Group B- 20% and group C-40%. In conclusion, it is evident that E. coli and Salmonella spp was successfully detected through different bacteriological media and biochemical reaction indicating the isolated organisms were responsible for possible fecal pollution and also a negative effect on growth performance of rabbit reared in research area.
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    EVALUATION OF NINE ADVANCED LINES OF AUS RICE (Oryza sativa L.)
    (DEPARTMENT OF GENETICS AND PLANT BREEDING, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA, BANGLADESH, 2016-06) DAS, MITA RANI
    A field experiment was conducted with nine aus F5 materials along with parents as checks at the experimental farm of Sher-e-Bangla Agricultural University, Dhaka during the period from April 2015 to September 2015 to compare among the 9 F5 lines in order to select high yielding and short duration aus line(s). Fourteen characters were studied to find out the suitable traits and three replications were conducted at Randomized Complete Block Design for the improvement of rice yield. The selected genotypes were found significantly variable. Comparatively phenotypic variances were higher than the genotypic variances and PCV were higher than GCV. All characters showed high heritability. All characters except panicle length showed moderate to high genetic advance in percent mean. High heritability coupled with moderate to high genetic advance in percent mean is governed by additive gene action which is better for selection. On the other hand, the significant positive correlation with seed yield per hectare was found in days to flowering (G = 0.924, P = 0.872), days to maturity (G = 0.983, P = 0.892), plant height (G = 0.771, P= 0.657), panicle length (G = 0.503, P = 0.367), number of primary branches per panicle (G = 0.940, P = 0.669), number of secondary branches per panicle (G = 0.653, P = 0.587), total no of spikelets per panicle (G = 1.085, P = 0.535), number of filled grain (G = 1.101, P = 0.600), yield per plant (G = 0.965, P = 0.844). Path co-efficient analysis revealed that days to maturity (0.332), total number of tiller per plant (0.336), panicle length (0.973), number of primary branches per panicle (0.436), number of filled grain (1.25), number of unfilled grain (0.21) and yield per plant (1.11) had the positive direct effect on yield per hectare. Number of filled grain per panicle was important for selection. The residual effect was found 0.10737 which indicated that 89.3% of the variability was accounted for fourteen yield and yield contributing traits in the present studies. Genotype G1 and G9 took longest period for days to maturity (130.3 days) which produce higher yield G1 (5.0 t) and G9 (4.88 t) with compare to their checks. Plant height in G1 (120.3cm), total number tiller per plant in G7 (18.33), number of effective tiller in G7 (15.39), panicle length in G8 (24.67) number of primary and secondary branches per panicle in G9, number of filled grain in G9 (136.10) and yield per plant in G1 (31.0) were higher than their checks.