Triiodothyronine (T3) and thyronine (T4) serum level evaluation during the oestrus cycle in guilts (Sus scrofa domestica - Linnaeus, 1758)

Authors

  • Gilson Hélio Toniollo Universidade Estadual de São Paulo, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Reprodução Animal, Jaboticabal, SP
  • Wilter Ricardo Russiano Vicente Universidade Estadual de São Paulo, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Reprodução Animal, Jaboticabal, SP
  • Claudio Alvarenga de Oliveira Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Reprodução Animal, São Paulo, SP
  • Euclides Braga Malheiros Universidade Estadual de São Paulo, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Ciências Exatas, Jaboticabal, SP
  • Marileda Bonafim Carvalho Universidade Estadual de São Paulo, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Ciências Exatas, Jaboticabal, SP

DOI:

https://doi.org/10.1590/S1413-95961998000500003

Keywords:

Triiodothyronine, Thyroxine, Swine

Abstract

In the present study 21 young female swines, sexually mature, reared and kept under a industrial management system were assessed for its progesterone serum profiles during the oestrus cycle. Blood sampling was performed always at the same interval, from 8:00 to 10:00 AM. Each animal was submitted to 14 venal punctions at days 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 21, 22 and 23 of the oestrous cycle. the first day of the oestrous phase was assumed to be Day 0 and the 23rd as the first of the next cycle. Hormone determinations were performed employing a solid phase radioimmunoassay (RIA). Highest T3 concentrations were observed at the 1st and 23rd days and minimul values for the 12hd of the oestrus cycle. Regarding T4, the concentration values ranged from 2.42 and 3.74 mug/dl.

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Published

1998-01-01

Issue

Vol. 35 No. 5 (1998)

Section

VETERINARY MEDICINE

License

The journal content is authorized under the Creative Commons  BY-NC-SA  license (summary of the license: https://creativecommons.org/licenses/by-nc-sa/4.0 | full text of the license: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode) 

How to Cite

1.
Toniollo GH, Vicente WRR, Oliveira CA de, Malheiros EB, Carvalho MB. Triiodothyronine (T3) and thyronine (T4) serum level evaluation during the oestrus cycle in guilts (Sus scrofa domestica - Linnaeus, 1758). Braz. J. Vet. Res. Anim. Sci. [Internet]. 1998 Jan. 1 [cited 2024 Nov. 25];35(5):210-4. Available from: https://revistas.usp.br/bjvras/article/view/5684