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Articles by Henryk Gorecki
Total Records ( 2 ) for Henryk Gorecki
  Zbigniew Dobrzanski , Henryk Gorecki , Katarzyna Chojnacka , Helena Gorecka and Marzena Synowiec
  Mineral-humic preparations Humokarbowit (HKW) and Humobentofet (HBF) were used in feeding of reproductive laying hens Lohmann Brown. The effect of these preparations on microelement composition of eggs was investigated. The content of microelements in hens diet, egg albumen and eggshell was determined by ICP-MS technique and relative bioaccumulation coefficient (RBC) was evaluated. The humic preparations significantly increased selenium and decreased molybdenum concentration in egg albumen. Increase of selenium and iron content in egg yolk and increase of iron concentration in eggshells was observed. The preparations did not influence the content of such elements as Cr, Co, Cu, I, Mn, Zn. The highest levels of RBC were found for selenium and iodine and the lowest for manganese.
  Helena Gorecka , Henryk Gorecki , Katarzyna Chojnacka , Marzanna Baranska , Izabela Michalak and Agnieszka Zielinska
  The paper discusses the possibility of using renewable sources: slaughter wastes and wood ashes in the production of NPK fertilizers. The content of macronutrients, micronutrients and toxic elements in these materials was reported. In the present work, poultry feathers were used as fertilizer source of nitrogen, animal bones as the source of phosphorus and wood ash as the source of potassium and micronutrients. Bioavailability of fertilization components was increased by mineralization with sulfuric acid, which transformed keratinous nitrogen of poultry feathers into ammonia nitrogen, hydroxyapatite phosphorus to bioavailable orthophosphate. Also, mineralization of organic content of the materials was achieved. The method of production and the composition of NPKS fertilizer, the content of which was adjusted to the requirements of oil seed rape was provided. The fertilization properties were checked in germination tests.
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