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International Research Journal of Applied Life Sciences
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 1839-8499 - ISSN (Online) 1839-8499
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           INGREDIENTS FOR WALIKING CATFISH, Clarias batrachus

    • Authors: MD. SHAHIN PARVEZ
      Abstract: In vivo protein digestibility of walking catfish (Clarias batrachus) fed different types of feed was determined in this study. One reference diet (RD) and three test diets (TD) were prepared using different test ingredients viz fish meal (TD1), soybean meal (TD2), and meat & bone meal (TD3). Each test diet was composed of 70 percent reference diet and 30 percent respective feed ingredients. Crude protein in RD was maintained at 35%. The fish were reared in aquaria and fed RD and TD three times a day at the rate of 8% of their body weight. Each aquarium consisted of fifteen individuals with the replication of three. Chromic oxide (Cr2O3) was used in diets as the marker and feces were used for apparent protein digestibility analysis. The highest protein digestibility among the diets was obtained at TD2 (83.34 ± 0.166%) followed by TD1 (82.56 ± 0.147 %), and TD3 (68.11 ± 0.327%). On the other hand, the highest protein digestibility among the feed ingredients was obtained in soybean meal (88.44 ± 0.554%) followed by fish meal (85.81 ± 0.49) and meat & bone meal (37.66 ± 1.0886). The feeding experiments suggested that soybean meals could be utilized as a suitable replacement for other ingredients in a formulated diet for C. batrachus species in terms of protein digestibility.
      PubDate: 2014-01-08
      Issue No: Vol. 2 (2014)
  • Integrated Farming System On-Farm technology Transfer through farmers

      Abstract: Research and development works on niche/ecosystems based  homestead vegetable gardening  were carried out across nine Farming Systems Research and Development sites of  On-Farm Research Division of Bangladesh Agricultural Research Institute during 1999 to till today,  resulting in development of nine vegetable production models for different agro-ecological regions. Through homestead vegetable gardening daily vegetable requirement of small farmers were largely met by supplying 200-220 g/head/day against the bench mark level of 40-50 g/head/day. Also vegetable intake largely provided required amount of Vitamin A, C, calcium and iron. Thus food security was increased; nutritional deficiency was reduced along with women empowerment.
      PubDate: 2014-01-08
      Issue No: Vol. 2 (2014)
  • Efficacy of imidacloprid, a nicotinoid group of insecticide against the
           infestation of chilli aphid, Myzus persicae (Hemiptera: Aphididae)

    • Authors: Gopal Das
      Abstract: : An experiment was carried out during October, 2012 to January, 2013 in the farmer field, under Boyra union, Mymensingh Sadar Thana to evaluate the efficacy of imadacloprid (Rally, 20 SL) against the infestation of chilli aphid, Myzus persicae. Three doses of Rally 20 SL (imidacloprid) viz. 1, 2 and 3 ml/li were evaluated against the nymphs and adults infestation at the flowering and fruiting stage of chilli. Data were collected at 1, 3, 7 and 10 days following insecticide spray. The highest mortality was observed form 3 ml/li both in the leaf as well as in twigs which was followed by 2 and 1 ml/li concentration in comparison with that in the water treated control. The action of imidacloprid was rapid i.e. aphids populations were significantly reduced just 1 day after insecticide spray although the highest mortality was recorded from day 3 after insecticide spray. Once sprayed, the action of imidacloprid was clearly persisted at least up to day 10. In control or untreated plant, >70% of leaves were found distorted or somewhat twisted condition. Following imidacloprid spray, majority of the distorted leaves were backed to normal condition at 10 days after spray but no significant changes was observed on 1-7 days after spray although aphid populations were significantly reduced immediately after imidacloprid spray (>80% were killed by day 1 after spray). The aphid populations were mostly confined on the ventral surface of the leaf than the upper surface. For controlling chilli aphid, Rally 20 SL would be an excellent neonicotinoid insecticide with the dose of 2 ml/li considering the mortality level as well as toxicity to human and environment.  
      PubDate: 2014-01-08
      Issue No: Vol. 2 (2014)
  • Plant biodiversity in the hoar homesteads of Bangladesh

    • Authors: Mohammad Mannan
      Abstract: Plant biodiversity in the hoar homesteads of Bangladesh was studied during March to September 2011. Eighty four useful plant species were identified during the study period. Among them 33.33% fruits, 28.57% timber 22.62% summer vegetables and 15.48% were winter vegetable species. Number of fruits species were found highest (28 spp) followed by the timber (24 spp), summer vegetables (19 spp) and winter vegetables (13 spp). Coconut, Mahagani, brinjal and bottle gourd were found most prevalent in their respective category. Inter species diversity was highest (0.799) in the fruit species and lowest in summer vegetable. Among the fruit species coconut was found in 80.67% haor homestead followed by mango in 79.33%, guava in 63.67% and papaya in 51.67% haor homestead. Dendrogram analysis shows that betel nut in fruits, mehogony in timber, snake gourd in winter vegetable and red amaranths in summer vegetable were found as the prime contributor of diversity in their respective category.
      PubDate: 2014-01-08
      Issue No: Vol. 2 (2014)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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