Effect of crop protection and fertilization regimes used in organic and conventional production systems on feed composition and physiological parameters in rats
Srednicka-Tober, Dominika and Baranski, Marcin and Gromadzka-Ostrowska, Joanna and Skwarlo-Sonta, Krystyna and Rembialkowska, Ewa and Hajslova, Jana and Schulzova, Vera and Çakmak, İsmail and Öztürk, Levent and Krolikowski, Tomasz and Wisniewska, Katarzyna and Hallmann, Ewelina and Baca, Elzbieta and Eyre, Mick and Steinshamn, Havard and Jordon, Teresa and Leifert, Carlo (2013) Effect of crop protection and fertilization regimes used in organic and conventional production systems on feed composition and physiological parameters in rats. Journal of Agricultural and Food Chemistry, 61 (5). pp. 1017-1029. ISSN 0021-8561 (Print) 1520-5118 (Online)
Official URL: http://dx.doi.org/10.1021/jf303978n
Very little is known about the effects of an organic or conventional diet on animal physiology and health. Here, we report the effect of contrasting crop protection (with or without chemosynthetic pesticides) and fertilization (manure or mineral fertilizers) regimes on feed composition and growth and the physiological parameters of rats. The use of manure instead of mineral fertilizers in feed production resulted in lower concentrations of protein (18.8 vs 20.6%) and cadmium (3.33 vs 4.92 μg/100g) but higher concentrations of polyphenols (1.46 vs 0.89 g/100g) in feeds and higher body protein (22.0 vs 21.5%), body ash (3.59 vs 3.51%), white blood cell count (10.86 vs 8.19 × 103/mm3), plasma glucose (7.23 vs 6.22 mmol/L), leptin (3.56 vs 2.78 ng/mL), insulin-like growth factor 1 (1.87 vs 1.28 μg/mL), corticosterone (247 vs 209 ng/mL), and spontaneous lymphocyte proliferation (11.14 vs 5.03 × 103 cpm) but lower plasma testosterone (1.07 vs 1.97 ng/mL) and mitogen stimulated proliferation of lymphocytes (182 vs 278 × 103 cpm) in rats. There were no main effects of crop protection, but a range of significant interactions between fertilization and crop protection occurred.
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