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by
M.R. Mondol |
Total Records (
2 ) for
M.R. Mondol |
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M. Asaduzzaman
,
M.S. Jahan
,
M.R. Mondol
,
M.A. Islam
and
A.K. Sarkar
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A total of ninety-six Shaver
579 pullets were fed on isocaloric and isonitrogenous diet with vitamin-mineral
premixes, Supramixes Layer, Acimix Super-L and Adivit-L and without
premix (control) in the age duration from 25 to 40 weeks to evaluate
the efficacy of different commercial premixes. Daily feed intake and
body weight gain of the pullets did not differ significantly (P>0.05).
Hen day egg production of different treatments differed significantly
(P< 0.01). Higher and statistically similar egg production was obtained
in Supramix layer (75.4%) and Acimix Super-L (74.12%) treatment. The
lowest (62.5%) and statistically similar (65.99%) egg production occurred
in control and Adivit-L treatment respectively. Egg weight of the treatments
differed significantly (P< 0.01). The highest (57.15g) and statistically
similar (56.57g) egg weight was observed in supramix Layer and Acimix
Super-L group respectively. The highest egg mass output of Supramix
Layer (42.98) differed significantly (P< 0.01) from the control (33.98).
Significant (P< 0.01) difference was observed in the FCR value of Supramix
Layer (2.68) and control (3.43) group. Broken egg percent of the treatments
differed significantly (P< 0.01). High broken egg (4.11%) was observed
in control group. No significant (P>0.05) differences were observed
in livability. The observation of the results showed that use of commercial
vitamin-mineral premix to supplement the diet of caged laying pullets
is inevitable to maintain desirable production level. But the efficacy
of all commercial premixes was not equal. The quality of marketed premixes
is not uniform which is revealed in terms of performance test in the
study. |
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M.R. Mondol
,
S. Dewan
,
M.A Hossain
,
M. Asaduzzaman
,
M.A. Islam
and
U.A. Rozario
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In the present experiment the fingerlings of Puntius gonionotus (Thai Sarpunti) were stocked in the experimental rice field plot of Agronomy Field Laboratory, Bangladesh Agricultural University, to study their food and feeding habits in rice field. The fingerlings of this fish were stocked after 20 days of transplanting rice seedlings and the samplings of fishes were done once in every month from June to August. The gut contents of fishes were analysed by the numerical method and percentage of frequency of occurrence method. The water quality parameters such as temperature, Dissolved Oxygen (DO), pH, total alkalinity, chlorophyll-a, nitrate-nitrogen and phosphate-phosphorus showed monthly variations and they were within productive range. A total of 37 genera of phytoplankton belonging to Chlorophyceae, Euglenophyceae, Cyanophyceae and Bacillariophyceae were recorded in the water of the experimental plot of rice fields and in zooplankton population a total of 13 genera belonging to Rotifera, Cladocera and Copepoda were recorded. Among the 4 groups of phytoplankton Chlorophyceae was the most dominant group and Euglenophyceae was the least dominant group and in zooplankton Rotifera was recorded as the most dominant group and Cladocera as the least dominant group. However among the plankton population, phytoplankton was recorded highly dominant over zooplankton in the water of rice field. Among the genera of phytoplankton Fragilaria, Navicula, Surirella, Chlorella, Chrysococcus, Scenedesmus, Ulothrix, Euglena, Cyclotella and Oscillatoria and among the genera of zooplankton Brachionus, Cyclops, Asplanchna and Nauplius were dominant in water of the plot. The total number of genera of phytoplankton recorded in the gut contents of P. gonionotus were 36 and that of the genera of zooplankton recororded were 6. Among the 4 groups of phytoplankton Bacillariaophyceae was the most dominant and preferred group. With respect to zooplankton. P. gonionotus showed very less preferance on them. Among the genera of phytoplankton the relatively more preferred genera were Navicula, Closterium, Fragilaria, Chrysococcus, Oscillatoria, Tabellaria, Scenedesmus, Ulthrix and Aphanizomenon. P. gonionotus showed very less preference on the genera of zooplankton. P. gonionotus may be regarded as planktivores feeding mostly on phytoplankton. |
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