M. López Alonso

TL;DR: It is confirmed that nutrition can influence the characteristic metabolic changes occurring between lactation onset and peak lactation, and the combination of MDA and TAS can provide complementary information about the metabolic status of the cow.

TL;DR: Overall, the levels of arsenic, cadmium, lead and zinc in cattle in Galicia do not constitute a risk for animal health, however, up to 20% of cattle in some regions inGalicia had levels of copper in the liver that exceeded 150 mg/kg wet wt.

TL;DR: Copper and zinc concentrations in Galician cattle did exceed acceptable maximum concentrations but the frequency with which this occurred depended upon which acceptable maximum concentration was used; regulatory values differ markedly between countries.

TL;DR: Cadmium was the toxic element that had the greatest influence on copper and zinc homeostasis and arsenic and copper concentrations were strongly correlated with each other in the liver and may indicate that the high copper levels in animals from copper-rich areas in Galicia interfere with their arsenic excretion.

TL;DR: Calves may not be sensitive enough biomonitors of background variation in soil levels, although they may be useful for monitoring anthropogenic arsenic contamination, and copper and zinc liver levels increased progressively with soil levels.