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Body Weight and Allometric Data and Diet ‐ Experimental Study
Author(s) -
Patricio João A B,
Moreno Helena B,
Marques Rodrigo F,
Pereira Paula
Publication year - 2007
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.21.5.a225-b
Subject(s) - body weight , zoology , allometry , confidence interval , food intake , chemistry , body surface area , inhalation , medicine , biology , anatomy , ecology
In this study we evaluate the possible changes of body weight (BW) and allometric data in relation with diet composition. Two groups of 20 Wistar male rats 4 weeks old were used. One group was maintained with no manipulation (control), the other was submitted to the administration of a diet rich in sucrose and poor in proteins and lipids during 4 weeks (test). After 4 weeks all the animals were sacrificed. The body weight was measured. The index for each organ was determined (Ixw). It was also determined the food ingest rate (FIR), the water intake rate (WIR), the inhalation rate (INR), the specific minimum energy cost (SMEC) and body surface area (BSA). The BW, Ixw and allometric data given for a confidence interval of 95% were the following results. For the control group: BW from 170.81 to 196,09, Ilw from 0,0426 to 0.0481, Ikw from 0.0036 to 0.0044 and Isw from 0.0038 to 0.0058, FIR from 11.545 to 12.400, WIR from 0.021 to 0.024, INR from 95.443 to 105.733, SEMEC from 19.209 to 21,140 and BSA from 357.233 to 3888.012. For the test group BW from 32.80 to37.37, Ilw from 0.051 to 0.059, Ikw from 0.006 to 0.007 and Isw from 0.012 to 0.014, FIR from 4.542 to 4.879, WIR 0.0048 to 0.0053, INR from 25.461 to 28.119, SMEC from 5.563 to 6.109 and BSA from 121.974 to 132.382. This results indicate that alterations in nutrition can modify basic physiologic parameters and interferer with the studies of some experimental models.