Environmental temperature and its effect on physiological parameters in Nellore cows and crosses under conditions of the Peruvian tropics

Authors

  • Ide Unchupaico P. Facultad de Zootecnia, Universidad Nacional del Centro del Perú, Junín
  • Luis Bazán A. Escuela Profesional Zootecnia Tropical, Facultad de Ciencias Agrarias, Universidad Nacional del Centro del Perú, Junín
  • Carlos Quispe E. Escuela Profesional de Medicina Veterinaria y Zootecnia, Facultad de Ciencias de la Salud, Universidad Peruana los Andes, Junín
  • Edith Ancco G. Escuela Profesional de Medicina Veterinaria y Zootecnia, Facultad de Ciencias de la Salud, Universidad Peruana los Andes, Junín

DOI:

https://doi.org/10.15381/rivep.v31i1.17549

Keywords:

heat stress, cows, haematology, thermoregulation, physiological parameters

Abstract

The aim of this study was to determine the physiological parameters related to body thermoregulation, as well as basic haematological parameters between Nellore cows and crossbreeds under heat stress. The study was carried out in the province of Satipo, Junín region, Peru, at 628 meters above sea level. Sixteen crossbred cows (Brown Swiss x Nellore) and 16 Nellore cows were used. The physiological parameters (body temperature, respiratory rate and heart rate) were evaluated in the morning (06:00-07:00) and in the afternoon (14:00-17:00). Blood samples were taken to determine haemoglobin (g/dl), haematocrit (%), mean corpuscular volume (MCV, fl), mean corpuscular haemoglobin (MCH, pg), mean corpuscular haemoglobin concentration (MCHC, g/dl). Thermoregulatory functions (rectal temperature, heart rate and respiratory rate) were affected during hours of heat stress in both racial groups (p<0.05). Haematological values were found within the referential ranges, except the MCV and MCH.

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Published

2020-03-29

Issue

Vol. 31 No. 1 (2020)

Section

Comunicaciones

License

Copyright (c) 2020 Ide Unchupaico P., Luis Bazán A., Carlos Quispe E., Edith Ancco G.

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

AUTHORS RETAIN THEIR RIGHTS:

a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.

b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigaciones Veterinarias del Perú (RIVEP).

c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating the source of publication (the originator of the work, journal, volume, number and date).

How to Cite

Unchupaico P., I., Bazán A., L., Quispe E., C., & Ancco G., E. (2020). Environmental temperature and its effect on physiological parameters in Nellore cows and crosses under conditions of the Peruvian tropics. Revista De Investigaciones Veterinarias Del Perú, 31(1), e17549. https://doi.org/10.15381/rivep.v31i1.17549