[Iodine intake of ruminants. Analytical methods; influence of different levels of iodine of food origin in pregnant and suckling ewes on the iodine content of the biological fluids and of the thyroid metabolism parameters]

absorption agneau aliment pour animaux analyse chimique blood composition brebis chemical analysis composition du sang contenido mineral cordero ewes excretion feeds iode iodine lactation lait lambs leche milk mineral content orina oveja piensos thyroid gland urine yodo