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by
M. J. Alam |
Total Records (
5 ) for
M. J. Alam |
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M. J. Alam
,
M. A. R. Howlider
,
M. A. H. Pramanik
and
M. A. Haque
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A total of 144 day-old straight run Arbor Acres broiler
chicks were fed on 4 iso-nitrogenous and iso-energetic diets; starter
control contained 22.1% CP and 2924 Kcal/kg ME and finisher control had
19.25% CP and 3005 Kcal/kg ME. In three test diets exogenous Alquerzim
(1g/kg), Roxazyme-G (0.01g/kg) and Feedzyme (0.05g/kg) were supplemented
to control diet to observe whether addition exogenous enzyme improves
efficiency of broiler production. The growth rate, feed intake, feed conversion,
dressing yield and profitability were increased by addition of exogenous
enzymes. The addition of enzyme is effective to overcome antinutritive
effect of NSP on broiler performances. Enzyme had no effect on survivability.
Roxazyme-G and Feedzyme are more profitable than Alquerzim. Therefore,
it may be concluded that exogenous enzyme may be used in broiler diet
by proper selection of enzyme to get best result. |
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Bhupesh C. Roy
,
M. J. Alam
and
M. Goto
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Liquid-liquid extraction based on reversible chemical complexation is an efficient separation technique that is highly effective and selective for separating polar organic acids (monocarboxylic acids) from their aqueous medium. Extraction equilibria of aqueous solutions of monocarboxylic acids such as acetic acid, propionic acid and butyric acid with Tri-n-butyl phosphate (TBP) in dodecane were measured at the temperature (20±1)°C under various concentrations of acids, extractant (TBP) and also with the variation of organic/aqueous phase ratio. An expression for the extraction equilibrium was derived by which the extraction equilibrium constant (Kc) as well as the number of apparent reacting molecules of extractant (n) were evaluated. From the experimental data it was observed that the estimated values of extraction equilibrium constant (Kc) and the apparent number of extractant molecules reacting with one molecule of each acid dependent on the organic phase composition as well as on the concentration of aqueous phase, due to which each acid gave different extraction isotherms. |
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M. S. A. Khan
,
M. J. Alam
,
S. Rheman
,
S. Mondal
and
M. M. Rahman
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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. |
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M. Y. Ali
,
M. A. Islam
,
M. J. Alam
and
M. N. Islam
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Yogurt samples from ten different
shops of Mymensingh Town and Laboratory made in 3 batches were analyzed in the
Dairy Technology Laboratory, Department of Dairy Science, Bangladesh Agricultural
University to monitor the quality. Significant difference in overall score of
physical test (smell and taste, body and consistency, colour and texture), chemical
(protein, fat, total solids, ash, acidity and PH) and microbiological status
was found among different yogurt samples. Laboratory made yogurt was the best
in quality. Dayamoy and Anil Gosh were in 2nd and 3rd position in quality of
yogurt. This investigation suggested that adulterated milk must be avoided in
yogurt preparation and also to follow strict hygienic condition in order to
have |
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Sarder Nasir Uddin
,
A.M. Hasan
,
M.R. Anower
,
M.A. Salam
,
M. J. Alam
and
S. Islam
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Until the advent of genetic engineering, enzyme producers were limited in their ability to produce innovative products for the marketplace. They were constrained to isolate enzymes from organisms approved for the industrial use. The desired characteristics could be enhanced only using classical in lit agenesis techniques. When these methods failed, no alternatives were available. Commercialization depended on incremental yield improvements gained by continuous programs of strain development. The ability to use recombinant DNA (rDNA) techniques has removed many of these barriers. Enzyme producers recognized early the potential for commercialization new products using genetic manipulation. They worked with a wide variety of single-celled organisms that were simpler and thus, easier to understand then the higher orders of plants and animals. The organisms already were well characterized for growth and expression rates. Short life cycles allowed rapid testing. These systems were ideal for genetic manipulation using rDNA techniques. Genetic engineering, combined with an understanding of biocatalysts to predict alterations for enzyme improvements, is revolutionizing the production and use of enzymes in the marketplace. Offering a recombinant produced product represents the culmination of a long and complex effort on the part of a multitude of disciplines: molecular and microbiology, X-ray crystallography, enzymology, protein and organic chemistry, biochemistry, fermentation and formulation engineering, assay chemistry and technical service/applications, marketing, sales. Because of the variety of disciplines required, a critical mass is needed to innovate products successfully and them to market. The continued proliferation of novel enzyme products requires development of core technologies so complex and expensive that they can be justified only rDNA technology must consider regulatory issues, ownership protection and consumer acceptance. |
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