Surface temperature of ewes during estrous cycle measured by infrared thermography

Freitas, Ana Carolina Barros de; Vega, Wilder Hernando Ortiz; Quirino, C. R.; Bartholazzi, Aylton; David, Caroline Marçal Gomes; Geraldo, André Torres; Rua, Miguel Alejandro Silva; Rojas, Luisa Fernanda Cipagauta; Filho, Janeo Eustáquio de Almeida; Dias, Ângelo José Burla

doi:10.1016/j.theriogenology.2018.07.015

Cited by 32 publications

(15 citation statements)

References 12 publications

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“…A limitation of ocular IRT was that ocular temperature was significantly lower than core temperature and not able to detect short-term changes of temperature. In contrast, IRT was effective in detecting small temperature variations during different phases of the oestrous cycle in ewes using vulva and muzzle temperature [87].…”

Section: Thermal Imaging/infrared Thermographymentioning

confidence: 96%

Technologies for the automated collection of heat stress data in sheep

et al. 2021

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The automated collection of phenotypic measurements in livestock is becoming increasingly important to both researchers and farmers. The capacity to non-invasively collect real-time data, provides the opportunity to better understand livestock behaviour and physiology and improve animal management decisions. Current climate models project that temperatures will increase across the world, influencing both local and global agriculture. Sheep that are exposed to high ambient temperatures experience heat stress and their physiology, reproductive function and performance are compromised. Body temperature is a reliable measure of heat stress and hence a good indicator of an animals’ health and well-being. Non-invasive temperature-sensing technologies have made substantial progress over the past decade. Here, we review the different technologies available and assess their suitability for inferring ovine heat stress. Specifically, the use of indwelling probes, intra-ruminal bolus insertion, thermal imaging and implantable devices are investigated. We further evaluate the capacity of behavioural tracking technology, such as global positioning systems, to identify heat stressed individuals based on the exhibition of specific behaviours. Although there are challenges associated with using real-time thermosensing data to make informed management decisions, these technologies provide new opportunities to manage heat stress in sheep. In order to obtain accurate real-time information of individual animals and facilitate prompt intervention, data collection should be entirely automated. Additionally, for accurate interpretation on-farm, the development of software which can effectively collect, manage and integrate data for sheep producer’s needs to be prioritised. Lastly, understanding known physiological thresholds will allow farmers to determine individual heat stress risk and facilitate early intervention to reduce the effects in both current and subsequent generations.

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Section: Thermal Imaging/infrared Thermographymentioning

confidence: 96%

Technologies for the automated collection of heat stress data in sheep

et al. 2021

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“…Focusing on livestock, the infrared technology can be used, for example, to detect mastitis in cows [51] and sheep [125], lameness in dairy cows [126] and sheep [127], ectoparasites in cattle [128,129], measure surface temperature in ewes during the estrous cycle [130] or detect estrus and ovulation in cows [131], measure febrile states after vaccination in pigs [132], diagnose respiratory diseases in pigs [133] and calves [134], assess body surface temperature in sows and piglets [135], thermographically examine the musculoskeletal system during race training in young thoroughbreds [136], assess stress in broilers [137], detect responses to handling stimuli in cattle [138], assess semen quality in bulls [139]; it can be used as an indicator of meat quality and also to evaluate stressors acting on animals before slaughter [140]. All in all, IRT can be used to assess the welfare of livestock [141].…”

Section: Use Of Irt In Livestock Productionmentioning

confidence: 99%

Application of the Machine Vision Technology and Infrared Thermography to the Detection of Hoof Diseases in Dairy Cows: A Review

et al. 2021

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Infrared thermography (IRT) is a noninvasive and safe method of displaying the temperature map of objects that can be used to detect hoof diseases and lameness to reduce significant financial costs and physically stress animals. A qualitative bibliometric method based on the analysis of publications by the authors themselves using sophisticated tools of scientific databases was applied in this work. This review presents the fundamentals of IRT as well as recent developments in IRT detection in dairy science, including preprocessing, segmentation, and classification of objects in IRT images. In addition, recent studies dealing with the detection of hoof diseases and lameness using IRT are reviewed. As a result of this study, select previous studies are confronted in terms of technical aspects of IRT measurements such as emissivity, distance, temperature range, and reflected air temperature. Subsequently, recommendations for future IRT measurements are discussed.

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“…[161] Animal-mounted gyroscopes [161] Animal-mounted accelerometers [161,166,167] GPS sensors [168] Oestrus detection Alpha-D detector [169,170] Infrared thermography [171,172] Lameness detection Infrared thermography [173] Hoof weigh crate with four load platforms [174] Lambing detection Animal-mounted temperature sensors [175] Health status detection Implanted sensors (heart rate and body temperature) [176] Individual identification…”

Section: Camera-based Analysis [161] Microphonesmentioning

confidence: 99%

Contribution of Precision Livestock Farming Systems to the Improvement of Welfare Status and Productivity of Dairy Animals

Simitzis

Tzanidakis

Tzamaloukas

et al. 2021

Dairy

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Although the effects of human–dairy cattle interaction have been extensively examined, data concerning small ruminants are scarce. The present review article aims at highlighting the effects of management practices on the productivity, physiology and behaviour of dairy animals. In general, aversive handling is associated with a milk yield reduction and welfare impairment. Precision livestock farming systems have therefore been applied and have rapidly changed the management process with the introduction of technological and computer innovations that contribute to the minimization of animal disturbances, the promotion of good practices and the maintenance of cattle’s welfare status and milk production and farms’ sustainability and competitiveness at high levels. However, although dairy farmers acknowledge the advantages deriving from the application of precision livestock farming advancements, a reluctance concerning their regular application to small ruminants is observed, due to economic and cultural constraints and poor technological infrastructures. As a result, targeted intervention training programmes are also necessary in order to improve the efficacy and efficiency of handling, especially of small ruminants.

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Surface temperature of ewes during estrous cycle measured by infrared thermography

Cited by 32 publications

References 12 publications

Technologies for the automated collection of heat stress data in sheep

Technologies for the automated collection of heat stress data in sheep

Application of the Machine Vision Technology and Infrared Thermography to the Detection of Hoof Diseases in Dairy Cows: A Review

Contribution of Precision Livestock Farming Systems to the Improvement of Welfare Status and Productivity of Dairy Animals

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