2013
DOI: 10.1016/j.livsci.2012.10.019
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Evaluation of pulsatility index and diameter of the jugular vein and superficial body temperature as physiological indices of temperament in weaned beef calves: Relationship with serum cortisol concentrations, rectal temperature, and sex

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Cited by 4 publications
(3 citation statements)
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“…Rectal temperature readings were then collected on the assumption that, human contact affects cattle behaviour and this may stimulate different biological variables including the former [15]. A digital thermometer (GLA M500, GLA Agricultural Electronics, San Luis Obispo, CA, USA) was used and readings recorded as done by Sánchez-Rodríguez et al [25]. Ambient temperature readings were also taken.…”
Section: Methodsmentioning
confidence: 99%
“…Rectal temperature readings were then collected on the assumption that, human contact affects cattle behaviour and this may stimulate different biological variables including the former [15]. A digital thermometer (GLA M500, GLA Agricultural Electronics, San Luis Obispo, CA, USA) was used and readings recorded as done by Sánchez-Rodríguez et al [25]. Ambient temperature readings were also taken.…”
Section: Methodsmentioning
confidence: 99%
“…This assumption may help explain the VT peak observed at 1300 h. Early morning before sunrise is the coolest part of the day, which might logically allow heifers to efficiently dissipate body heat resulting in a decrease in their core body temperature. However, the opposite was observed; VT peaked between 0600 and 0700 h. Because physical activity (Sánchez-Rodríguez et al, 2013) and ruminal fermentation (Wahrmund et al, 2012) produce additional body heat, cattle exposed to heat stress tend to avoid or minimize behaviors that require muscular effort and to decrease feed intake in order to decrease metabolic heat production. When thermal homeostasis is reestablished, cattle may increase such behaviors and activities without compromising their physiology.…”
Section: Resultsmentioning
confidence: 99%
“…Sant'Anna (2013), referindo-se à citação de Paranhos da Costa et al (2002), indica que o temperamento é uma característica complexa, e sua avaliação geralmente requer o uso de indicadores capazes de medir a tendência do animal a ser mais ou menos agressivo, ativo, atento, curioso, dócil, reativo, dentre outros. O grande desafio hoje dentro desta área é encontrar um indicador de temperamento que seja capaz de englobar vários aspectos dentro de uma única medida, como a associação entre parâmetros fisiológicos e temperamento ou níveis de cortisol e temperatura retal (SANCHEZ-RODRÍGUEZ et al, 2013). No entanto, na maioria das pesquisas conduzidas são utilizados indicadores comportamentais que se baseiam em medidas de movimentos, posturas, posicionamento, dentre outros (BURROW, 1997).…”
Section: Temperamento Em Bovinos De Corteunclassified