R. Bras. Zootec.01/Apr/2003;32(2):411-7.

Endogenous loss and phosphorus requirements to maintenance for Saanen kids

Francisco Fernando Ramos de Carvalho, Kleber Tomas de Resende, Dorinha Mirian Smith S. Vitti, Ângela Cristina Dias Ferreira, Adib Luiz Abdala

DOI: 10.1590/S1516-35982003000200020

The objective of this research was to evaluate the effects of ingestion rations with different phosphorus levels, by goats in growth, on metabolism and endogenous losses of phosphorus. Eighteen Saanen animals, males, castrated, from 4 to 5 months of age, body weight average of 25 ± 1.2 kg, were housed, for 45 days, in metabolism cages. The animals received rations with three levels of P (0.08, 0.15 and 0.38% in dry matter) and similar levels of crude protein, metabolizable energy and Ca:P ratio. After 38 days of experiment, animals received injection of radiophosphorus (7,4 Mbq of 32

Endogenous loss and phosphorus requirements to maintenance for Saanen kids

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