SciELO - Scientific Electronic Library Online

 
vol.31 número1Efecto de la adición de melatonina en el medio de maduración y/o vitrificación de ovocitos sobre la producción in vitro de embriones bovinosPresencia emergente de Pasteurella bettyae en el aparato genital de una mujer índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

Compartilhar


Revista de Investigaciones Veterinarias del Perú

versão impressa ISSN 1609-9117

Resumo

UNCHUPAICO P, Ide; BAZAN A, Luis; QUISPE E, Carlos  e  ANCCO G, Edith. Environmental temperature and its effect on physiological parameters in Nellore cows and crosses under conditions of the Peruvian tropics. Rev. investig. vet. Perú [online]. 2020, vol.31, n.1, e17549. ISSN 1609-9117.  http://dx.doi.org/10.15381/rivep.v31i1.17549.

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 crossbreds 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.

Palavras-chave : heat stress; cows; haematology; thermoregulation; physiological parameters.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )