Journal of Animal Behaviour and Biometeorology
Journal of Animal Behaviour and Biometeorology
Research Article Open Access

Simple physiological indicators of young goats bred in extensive system

Laylson da Silva Borges, Fernanda Samara Barbosa Rocha

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The aim of this study was to evaluate the influence of day shift on physiological variables of young goats bred in an extensive system. Ten females of undefined racial pattern were used, with a mean age of 5 months, distributed in a completely randomized design, with two treatments (morning and afternoon shift) and 10 replications per treatment. The environmental variables were collected through a digital thermo-hygrometer. Respiratory and heart rate, and rectal temperature were measured. During the experimental period the averages of the air temperature and relative humidity, and the black globe-humidity index (BGHI) were of 38.80 ºC, 25.76% and 78.11, respectively. It was observed effect (P<0.05) of day shift on all physiological variables, with highest averages observed in the afternoon shift. The animals increased the respiratory and heart rate during the day periods to be able to maintain the rectal temperature within limits considered normal for this species.


ambience, goat farming, physiological variables, thermal discomfort


Araújo JIM, Araújo AC, Rodrigues HTM, Oliveira LG, Barros Junior CP, Fonseca, WJL, Luz CSM, Sousa Júnior SC (2016) Effect of different climatic environments on physiological characteristics of crossbred calves (Holandês x Gyr). Revista de Ciências Agroveterinária 15:259-265.

Fonseca WJL, Azêvedo DMMR, Campelo JEG, Fonseca WL, Luz CSM, Oliveira MRA, Evangelista AF, Borges LS, Sousa Jr (2016) Effect of heat stress on milk production of goats from Alpine and Saanen breeds in Brazil. Archivos de Zootecnia 65:615-621.

Furtado GD, Crispim MC (2015) On-pasture performance evaluation of Saanem and Parda Alpina goats, in Brazilian semi-arid areas, as contribution to the understanding of global warming impact. Gaia Scientia 9:28-36.

IBGE (2016). Instituto Brasileiro de Geografia e Estatística. Pesquisa Pecuária Municipal. Acessado em 12 de janeiro de 2018.

Kawadata CY, Castro RC, Savastano Júnior H (2005) Thermal comfort indexes and physiological responses of Holstein calves in individual houses with different roofings. Revista Engenharia Agrícola 25:598-607.

Kelly WR (1976) Diagnóstico clínico veterinário. 2ed. Barcelona: Continetal, 1976, 444p.

Leite JRS, Furtado DA, Leal AF, Souza BB, Silva AS (2012) Thermal comfort parameters of native goats raised in confinement in the semiarid of Paraíba state. Revista Brasileira de Engenharia Agrícola e Ambiental 16:443-448.

Lima LR, Barbosa Filho JAD (2013) Impact of pre-slaughter management on the welfare of goats and sheep. Journal of Animal Behaviour and Biometeorology 1:52-60.

Mousinho LRB, Campêlo JEG, Sousa Jr CS, Azevêdo DMMR, Leal TM, Moura RMAS (2014)  Physiological responses of Anglo Nubian female goats in the environmental conditions with high temperature. Revista Brasileira de Saúde e Produção Animal 15:160-171.  

R Core Team (2016) R: A language and environment for statistical computing. Vienna: R Foundation for Statistical Computing.


Silva CMBA, Souza BB, Brandão PA, Marinho PVT, Benício TMA (2011) Effect of the semiarid climatic conditions on the physiological behavior of saanen x boer crossbred goats. Revista Caatinga 24:195-199.

Silva EMN, Souza BB, Silva GA, Alcântara MDB, Cunha MGG, Marques BAA (2014) Avaluation of the adaptability of dairy goats with help of thermographic precision in the semiarid brazilian. Revista Brasileira de Medicina Veterinária 36:231-237.

Silva GA, Souza BB, Alfaro CEP, Silva EMN, Azevedo SA, Azevedo Neto J, Silva RMN (2006) Effect of year time and period of day on physiological parameters of reproductive goats in the semi-arid Paraiba. Revista Brasileira de Engenharia Agrícola e Ambiental 10:903-909.

Souza FC, Tinôco IFF, Baêta FC (2002) Avaliação de materiais alternativos para confecção do termômetro de globo. Revista Ciência e Agrotecnologia 26:157-164.

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