01292naa a2200277 a 450000100080000000500110000800800410001910000140006024501930007426000090026752003990027665000190067565000210069465000100071565000250072565000270075065000220077765000100079965000230080965300200083265300240085265300230087670000170089970000180091677300800093420670022017-03-14       1980    bl uuuu     u00u1 u    #d1 aSHIGA, A.  aExperimental studies on hypomagnesemia in ruminants. V. Metabolism of phosphorus and plasma level of parathyroid hormone in sheep fed diets of varying composition of magnesium and calcium.  c1980  aAbstract: Plasma parathyroid hormone (PTH) levels fell sharply in four ewes kept on a low Mg and low Ca diet for ten days. In three of them it remained low for four days after giving extra Ca, then rose to normal. In one old ewe serum Ca rose and Mg and PTH fell sharply on day 2, and clinical hypomagnesaemia developed. Plasma PTH rose again from day 5 and death from tetany occurred on day 7.  aAnimal feeding  aAnimal nutrition  aSheep  aAlimento para animal  aDistúrbio metabólico  aNutrição animal  aOvino  aSuplemento mineral  aHypomagnesaemia  aMetabolic disorders  aMineral supplement1 aKOMINATO, A.1 aSHINOZAKI, K.  tJapanese Journal of Veterinary Sciencegv. 42, n. 2, p. 221-230, Feb. 1980.