STUDY OF TRACE AND ULTRATRACE ELEMENTS IN SILAGE INTENDED FOR CATTLE NUTRITION

Authors

  • Katarina Pavšič Vrtač University of Ljubljana Veterinary Faculty
  • Breda Jakovac Strajn University of Ljubljana Veterinary Faculty
  • Janez Salobir University of Ljubljana Biotechnical Faculty
  • Karin Šrimpf University of Ljubljana Veterinary Faculty
  • Gabrijela Tavčar Kalcher University of Ljubljana Veterinary Faculty

Abstract

Grass silage and maize silage are important sources of trace and ultratrace elements in cattle nutrition. Data regarding the function, metabolism and deposition, content in feed and animal requirements, as well as some parts of risk assessment, are still needed. To study the presence of selected elements (Al, As, Ba, Be, Cd, Cr, Co, Cu, B, Fe, Pb, Li, Mn, Hg, Mo, Ni, Se, Ag, Sr, Sn, Sb, V, Tl, Ti and Zn) in silage, the appropriate analytical procedures for their determination were introduced and validated in our laboratory. After closed-vessel microwave digestion, inductively coupled plasma mass spectrometry (ICP-MS) was used to analyse samples. Grass silage and maize silage samples from three important cattle-producing regions of Slovenia were analysed and statistically evaluated. The selected elements were found in both types of silage in a wide range of concentrations, with the exception of Tl in maize silage, where all results were below the limit of detection. Statistically significant differences were found for 9 elements in grass and maize silage from three different regions and for 23 elements when comparing grass silage and maize silage. The data suggest that cattle fed Slovenian grass silage or maize silages should receive routine mineral supplementation, of which the most important trace elements needed are Cu and Se. Cattle fed Slovenian maize silage also should receive supplementary Zn and Co. Based on research in other countries, though not tested here, an I supplement is advisable too.

Author Biographies

Katarina Pavšič Vrtač, University of Ljubljana Veterinary Faculty

Institute for Hygiene and Pathology of Animal Nutrition

Breda Jakovac Strajn, University of Ljubljana Veterinary Faculty

Institute for Hygiene and Pathology of Animal Nutrition

Janez Salobir, University of Ljubljana Biotechnical Faculty

Department of Animal Science

Karin Šrimpf, University of Ljubljana Veterinary Faculty

Institute for Hygiene and Pathology of Animal Nutrition

Gabrijela Tavčar Kalcher, University of Ljubljana Veterinary Faculty

Institute for Hygiene and Pathology of Animal Nutrition

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Published

2016-04-03

How to Cite

Pavšič Vrtač, K., Jakovac Strajn, B., Salobir, J., Šrimpf, K., & Tavčar Kalcher, G. (2016). STUDY OF TRACE AND ULTRATRACE ELEMENTS IN SILAGE INTENDED FOR CATTLE NUTRITION. Slovenian Veterinary Research, 53(1). Retrieved from https://slovetres.si/index.php/SVR/article/view/45

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Original Research Article