Plant Foods for Human Nutrition

, Volume 64, Issue 1, pp 1–5 | Cite as

Organic and Genetically Modified Soybean Diets: Consequences in Growth and in Hematological Indicators of Aged Rats

  • Julio Beltrame DalepraneEmail author
  • Tatiana Silveira Feijó
  • Gilson Teles Boaventura
Original Paper


The aim of this study was to evaluate the protein quality of organic and genetically modified soy by feeding specific diets to rats. Three groups of Wistar rats (n = 10) were used, and each group was named according to the food that they ate. There was an organic soy group (OG), a genetically modified soy group (GG), and a control group (CG). All animals received water and diet ad libitum for 455 days. At the end of this period, the weight of the GG group was the same as that of the OG, and both were higher than CG. Protein intake was similar for the OG and GG, which were significantly lower (p < 0.0005) than the CG. The growth rate (GR) of the rats, albumin levels, and total levels of serum protein were comparable for all groups. Hematocrit (p < 0.04) and hemoglobin (p < 0.03) for the OG and GG were less than the CG. Although the OG and GG demonstrated reduced hematocrit and hemoglobin, both types of soy were utilized in a way similar to casein. This result suggests that the protein quality of soy is parallel to the standard protein casein in terms of growth promotion but not hematological indicators.


Genetically modified soy Organic soy Growth Rats Hematological indicators 



body weight


control group


5-enolpyruvylshikimate-3-phosphate synthase




genetically modified soy group


genetically modified organism


genetically modified soy


growth rate


Laboratory of Experimental Nutrition


organic soy group


Organic soy


RoundUp ready



This study was performed under the auspices of the State of Rio de Janeiro Research Assistance Foundation (FAPERJ) and the National Council for Scientific and Technological Development (CNPq).


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Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • Julio Beltrame Daleprane
    • 1
    • 2
    • 3
    Email author
  • Tatiana Silveira Feijó
    • 2
  • Gilson Teles Boaventura
    • 2
  1. 1.College of MedicineFederal Fluminense UniversityNiteróiBrazil
  2. 2.Departament of Nutrition and Dietetics, Experimental Nutrition Laboratory, College of NutritionFederal Fluminense UniversityNiteróiBrazil
  3. 3.Departamento de Nutrição e Dietética, Faculdade de NutriçãoUniversidade Federal Fluminense (UFF)NiteróiBrasil

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