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Effect of Crop Protection and Fertilization Regimes Used in Organic and Conventional Production Systems on Feed Composition and Physiological Parameters in Rats

Lookup NU author(s): Dr Dominika Srednicka-Tober, Dr Marcin Baranski, Dr Michael Eyre, Dr Havard Steinshamn, Teresa Jordon, Professor Carlo Leifert


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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.

Publication metadata

Author(s): Średnicka-Tober D, Barański M, Gromadzka-Ostrowska J, Skwarło-Sońta K, Rembiałkowska E, Hajslova J, Schulzova V, Çakmak I, Öztürk L, Królikowski T, Wiśniewska K, Hallmann E, Baca E, Eyre M, Steinshamn H, Jordon T, Leifert C

Publication type: Article

Publication status: Published

Journal: Journal of Agricultural and Food Chemistry

Year: 2013

Volume: 61

Issue: 5

Pages: 1017-1029

Print publication date: 16/01/2013

ISSN (print): 0021-8561

ISSN (electronic): 1520-5118

Publisher: American Chemical Society


DOI: 10.1021/jf303978n


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Funder referenceFunder name
6046137305Ministry of Education of the Czech Republic
FP6-FOOD-CT-2003-506358European Community