Impact of essential oils on methane emissions, milk yield, and feed efficiency and resulting influence on the carbon footprint of dairy production systems.

Reducing CO emissions is one of the highest priorities in animal production. Regarding methane reduction, feed additives are of growing importance. As shown in a meta-analysis, the use of the essential oil (EO) blend Agolin Ruminant affects methane production per day (- 8.

Extraction of di-ethylhexyl-phthalate from perfusion lines of various material, length and brand by lipid emulsions.

Background: The plasticizer di-ethylhexyl-phthalate (DEHP) is extracted especially by lipid emulsions from polyvinylchloride infusion systems. The aim of this study was to systematically examine the extraction from perfusion lines commonly used in our hospital for lipid emulsion infusions.

Methods: Perfusion lines made from polyvinylchloride of various lengths and brands, polyethylene, polyvinylchloride/polyethylene (PVC/PE) and polyvinylchloride/polyurethane (PVC/PU), were perfused with lipid emulsions according to the circumstances of newborns on an intensive care unit, i.