• M K Krishnakumari

      Articles written in Proceedings – Animal Sciences

    • CullturingAriophanta madraspatana (Gray) in the laboratory for pesticide bioassay

      M K Krishnakumari K Muktha Bai S K Majumder

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      The garden snailAriophanta madraspatana (Gray) was selected for pesticide bioassay in view of its seasonal abundance. Optimum conditions were standardised for culturing and maintenance of these snails in the laboratory. The studies indicated that the snails could be maintained and reared well in the wooden terrarium (54×44×30 cm) with gravel-soil-leaf medium maintained between 7 and 9 pH. The optimal temperature and relative humidity ranges were found to be 22°C–28°C and 65%–75% respectively. Out of several foods screened, germinated greengram (Phaseolus aureus) was preferred and consumed by them. Growth rate was highest in the wooden terrarium out of several terraria tested, reaching 5 gm at the end of 14th week. Snails reproduced successfully under these conditions resulting in a homogeneous population well suited for bioassay of pesticides.

    • Parameters for assessing commensal rodent populations in rural ecological conditions

      Yashoda L Urs M K Krishnakumari S K Majumder

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      Rodent population is mostly related to the ecological conditions in rural dwellings. Each dwelling has its own ecosystem. Mainly population size depends on the varied habitats, food sources and status of sanitation existing in the premises. A methodology has been described to quantitate the above data. The parameters so fixed are not only useful for the assessment of populations, but also for evolving a strategy for effective and successful rodent control.

    • Feeding responses of young and adult albino rats (Rattus norvegicus) to a mixed basal diet

      M K Krishnakumari D Rajalakshmi V Sreenivasan C P Ramasundaram

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      A mixed diet of cereals and pulses was used in cooked and uncooked forms for growth studies with young albino rats. The feeding responses and gain in weight were compared with a commercial rat food containing 24% protein. There were no significant differences in the growth patterns among the three diets. The growing rats consumed 8·5 to 9 g/100 g body weight per day which decreased after the tenth week. The feeding patterns of adult albino rats of both sexes were similar for both cooked and uncooked basal diets. The basal diet seems to be best suited for the albino rats. Since cooking did not enhance either palatability or the diet consumption, dry diets are suggested for rat feeding. Dry basal diet is also recommended to evaluate sub-acute and chronic toxicity of all pesticides particularly those which are thermolabile.


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