• D Rajalakshmi

      Articles written in Proceedings – Animal Sciences

    • Growth and protein efficiency ratio in albino rats—a statistical approach

      D Rajalakshmi B S Ramesh

      More Details Abstract Fulltext PDF

      In animal experiments the Randomised Block Design is quite often used, the blocking based on some characteristics related to the character under study. Evaluation of the relative efficiency of the Randomised Block Design as compared to completely Randomized Design is necessary to decide whether a change of design is warranted. Data from 465 growth and/or protein efficiency ratio (PER) studies were processed to evaluate the relative efficiency of the randomised block design. The randomised block design turned out to be more efficient in growth and PER studies when blocking is based on age, sex and initial weight.

    • 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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