Serum levels of Triiodothyronine (T3) and Thyroxine (T4) in newborn water buffalo calves

Authors

  • Aluízio O. A Silva
  • Hugo D. Lau
  • José Silva de Sousa
  • Moacir C. da Silva
  • Maria Joana Sá Ribeiro
  • William G. Vale

DOI:

https://doi.org/10.1590/S1678-3921.pab1992.v27.3621

Keywords:

iodine, iodothyronines, domestic buffalo, hormonal levels

Abstract

The present work shows the determination of relative results of T3 Triiodothyronine and T4 Thyroxine through the Radioimmunoassay (RIA) in newborn water buffalo calves between 0 and 96 hours after birth. It was observed that serum levels of both hormones are very high in early age animals, when compared to adult animals (concentrations between 211.22 ± 0.90 to 265.62 ± 0.96 ng/dL for T3, and 5.97 ± 3.21 to 11.62 ± 3.04 mg/dL for T4, between 0 and 96 hours after birth, respectively). A maximum peak level for T3 and T4 was also observed in the third hour after birth, which decreased significantly 96 hours after birth. The sex factor seems to have a marked influence on the hormonal levels of both hormones, with higher concentration in female calves.

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Published

1992-01-01

How to Cite

Silva, A. O. A., Lau, H. D., de Sousa, J. S., da Silva, M. C., Ribeiro, M. J. S., & Vale, W. G. (1992). Serum levels of Triiodothyronine (T3) and Thyroxine (T4) in newborn water buffalo calves. Pesquisa Agropecuaria Brasileira, 27(1), 73–78. https://doi.org/10.1590/S1678-3921.pab1992.v27.3621

Issue

v.27, n.1, jan. 1992

Section

VETERINARY SCIENCE