Plasma variations of some hormones and nutrients associated with energy metabolism in high yielding Italian Simmental cows

acide gras libre acidi grassi liberi asciutta blood composition blood plasma cholesterol colesterol colesterolo composition du sang composizione del sangue dairy cows dry period energy metabolism free fatty acids glucosa glucose glucosio hormonas de la tiroide hormonas pituitarias hormone hypophysaire insulin insulina insuline lactation lattazione metabolismo energetico ormoni tiroidei pituitary hormones plasma sanguin razas de alta productividad thyroid hormones vacas lecheras vacche lattifere