Biological response of rat fed diets with high tuber content of conventionally bred and transgenic potato resistant to necrotic strain of potato virus (PVYN) Part I. Chemical composition of tubers and nutritional value of diets

Genetic modification of potato had no effect on the chemical composition (e.g. crude protein, starch, dietary fibre content and amino acid composition of protein) and nutritional properties of tubers (diet intake, animal growth, protein utilisation). Higher differences between chemical composition (especially in crude protein and starch content) and biological response of rats were determined in the case of diets containing tubers from conventional potato cultivars Ania, Maryna and Irga. Obtained results indicate that transgenic potatoes with genetically improved resistance to PVYN are substantial and nutritional equivalence to the non-transgenic cultivar.