Authors : Ignacio Mejia Haro , Dennis R. Brink , Gustavo Tirado Estrada , Francisco Nieto Munoz , J. Aniceto Aguilar Nieto and Jose Mejia Haro
Abstract: It was evaluated effects of supplementation of P and cholecalciferol (CC) on P absorption and retention in sheep. Forty-two sheep were assigned randomly to 6 treatments, consisting of a basal diet supplemented with P and CC: 0 g P and CC (Basal), 0 g P + CC (Basal+), 1 g P and no CC (P1), 1 g P + CC (P1+), 2 g P and no CC (P2) and 2 g P + CC (P2+). Total fecal and urinary collections were made for 10 day at the end of the experimental period and blood serum was collected. Rib bones were taken after sacrificing the sheep in the Basal+ and P2+ treatments. Samples were processed for P, Ca and Mg determination. Phosphorus and Ca body retention was calculated. Phosphorus retained in the body was greater (p = 0.01) in sheep supplemented with P and sheep of Basal+ than in sheep of Basal. No differences (p >0.05) were found in the concentration of P, Ca, or Mg in bone. Supplementing either 1 or 2 g of P/d increases P absorption and retention, whereas supplementation of CC increases P absorption and retention only in sheep not supplemented with P.
Ignacio Mejia Haro , Dennis R. Brink , Gustavo Tirado Estrada , Francisco Nieto Munoz , J. Aniceto Aguilar Nieto and Jose Mejia Haro , 2008. Supplementation of Phosphorus and Cholecalciferol and Effects on Absorption and Retention of Phosphorus in Sheep. Journal of Animal and Veterinary Advances, 7: 337-342.