Estrual rise in body temperature in the bovine I. Temporal relationships with serum patterns of reproductive hormones

Clapper, Jared; Ottobre, Joseph S.; Ottobre, Ann C.; Zartman, D. L.

doi:10.1016/0378-4320(90)90051-g

Cited by 30 publications

(22 citation statements)

References 19 publications

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“…Ruminal temperature was greater during 8-or 16-h periods at estrus compared with RuT the same daily hours the day before or the average for the previous 2 d. An increase of 0.61°C was observed during 8 h after estrus was first detected with twice daily observations compared with the same daily hours on the previous day, and RuT was decreased during the same daily hours the day after estrus. Vaginal temperature increased at estrus in lactating dairy cows (Redden et al, 1993) and in lactating beef cows (Kyle et al, 1998), and vaginal temperature increased at estrus compared with the average of the previous 3 d in dairy and beef cows (Clapper et al, 1990;Mosher et al, 1990;Kyle et al, 1998).…”

Section: Discussionmentioning

confidence: 90%

“…Ruminal temperature, adjusted to the maximum at estrus, increased for 4 h at estrus in this study. Vaginal temperature increased during estrus for 11 h in dairy heifers (Mosher et al, 1990), and the duration of the increase in vaginal temperature at estrus was 4 to 8 h in dairy cows (Clapper et al, 1990;Redden et al, 1993;Fisher et al, 2008) and beef cows (Kyle et al, 1998). Duration of the increase in body temperature during estrus may depend on equipment used, frequency of determination, environmental conditions, and physiological state of females.…”

Section: Discussionmentioning

confidence: 99%

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Relationship of ruminal temperature with parturition and estrus of beef cows1

Cooper-Prado

Long

Wright

et al. 2011

Journal of Animal Science

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Spring-calving Angus cows (n = 30) were used to evaluate changes in ruminal temperature (RuT) related to parturition and estrus. Cows were synchronized and artificially inseminated with semen from a single sire. Temperature boluses were placed in the rumen at 7.0 ± 0.2 mo of gestation. Boluses were programmed to transmit RuT every 15 min. Cows (BW = 623 ± 44 kg, BCS = 4.9 ± 0.4) calved during 3 wk, and estrus was synchronized at 77 ± 7 d after calving with PGF(2α). Cows were observed every 12 h to detect estrus. Daily average ambient temperatures ranged from 2 to 22 °C during parturition (February to March) and 17 to 25 °C during estrus (May to June). Ruminal temperature from 7 d before to 3 d after parturition and 2 d before to 2 d after visual detection of estrus was analyzed using the MIXED procedure. Ruminal temperatures <37.72 °C were attributed to water consumption and excluded from analyses. Day did not influence (P = 0.36) RuT from d -2 to -7 before parturition (38.94 ± 0.05 °C). Ruminal temperature decreased (P < 0.001) from d -2 to d -1 before parturition (38.88 ± 0.05 to 38.55 ± 0.05 °C, respectively). Ruminal temperature was not influenced (P = 0.23) by day from 1 d before to 3 d after parturition (38.49 ± 0.05 °C). Ruminal temperature at 0 to 8 h after detection of estrus (38.98 ± 0.09 °C) was greater (P < 0.001) compared with RuT at the same daily hour of the day before (38.37 ± 0.11 °C) or the day after estrus (38.30 ± 0.09 °C). Ambient temperature did not influence (P > 0.30) RuT at parturition or estrus. Ruminal temperature decreased the day before parturition and increased at estrus in spring-calving beef cows and has potential use as a predictor of parturition and estrus.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Relationship of ruminal temperature with parturition and estrus of beef cows1

Cooper-Prado

Long

Wright

et al. 2011

Journal of Animal Science

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“…Both physiological events and environmental factors can alter blood flow and tissue vascularization, processes that can be reflected in the surface temperature of the skin due to its function as a cooling system that irradiates heat (Purohit et al 1985;Cravello and Ferri, 2008; de Ruediger et al 2018; Mota-Rojas et al 2020a). Several methods have been utilized to measure the temperature changes that different species present under distinct conditions, but most options available are invasive, opening the possibility that the changes observed may be affected by the stress generated in the animals during the maneuvers required (Clapper et al 1990;Mosher et al 1990;Redden et al 1993;Kyle et al 1998;Fisher et al 2008;Sevegnani et al 2016). However, the use of the non-invasive technology called infrared thermography (IRT) is increasing because this technique has the capacity to take precise measurements of the surface temperatures of certain corporal regions from a distance of 30 cm or more.…”

Section: Introductionmentioning

confidence: 99%

Scientific findings related to changes in vascular microcirculation using infrared thermography in the river buffalo

Bertoni

Mota-Rojas

Macías

et al. 2020

JABB

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The objective of this review article is to discuss and analyze the most important scientific findings from studies of vascular microcirculation in the river buffalo using infrared thermography (IRT), as well as the thermal windows utilized with this species. The goals are to define the scope and areas of opportunity for IRT use in evaluating physiological processes and identifying potential applications in reproductive events associated with andrological traits in males and the detection of estrus and udder health in females. IRT has allowed the development of diverse perspectives regarding the comparative physiology of events like thermogenesis, peripheral blood flow, respiratory physiology, and mechanisms that reduce body temperature. The case of the river buffalo is no exception. According to the information analyzed, the temperatures of the orbital area, muzzle, and vulva have proven efficient for evaluating thermal comfort, a particularly important aspect of this species given its limited thermoregulating capacity and constant exposure to extreme temperatures. Evaluating scrotal temperature has been revealed as an appropriate tool for evaluating semen quality, while the surface temperature of the udder is useful in assessing mammary development in female buffaloes, two aspects of great zootechnical importance. In future studies, IRT will play a fundamental role in enhancing our understanding of the river buffalo's mechanisms of vascular microcirculation, with applications in productivity and behavior.

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“…The surface of the skin functions as a cooling system that irradiates heat, and the vascular variations of certain tissues possibly alter the surface temperature of the skin (Purohit et al, 1985). Different invasive techniques have been used to measure changes in body temperature during estrus, but these may be influenced by the stress caused to the animal (Clapper et al, 1990;Mosher et al, 1990;Kyle et al, 1998;Redden et al, 1993;Fisher et al, 2008). Infrared digital thermography (IDT) is a non-invasive technology that allows accurate measurement of surface temperature (Chacur et al, 2016a) and has great potential in its applicability in animal reproduction.…”

Section: Introductionmentioning

confidence: 99%

Effect of estrous cycle phase on vulvar, orbital area and muzzle surface temperatures as determined using digital infrared thermography in buffalo

Ruediger

Yamada

Barbosa

et al. 2018

Animal Reproduction Science

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The objective of this study was to evaluate variations in the orbital area, muzzle and vulva surface temperatures and progesterone (P4) concentrations during follicular and luteal phases in Murrah buffalo and whether these temperatures are influenced by the weather patterns. Forty cows were submitted to P4-based hormonal protocol. After P4 device withdrawal transrectal ultrasonography and infrared digital thermography were performed daily until day 16 and on days 20, 24, 28 and 32 to follow the ovulation as well as the vulva, orbital area and muzzle temperatures. In addition, the weather variables were evaluated, as well as rectal temperature (RT) and P4 and cortisol concentration. Vulva, muzzle and orbital area temperatures correlated positively with RT and with weather data. Greater temperatures of the vulva, orbital area and muzzle were detected during the period of estrus. The vulvar surface temperature (VST) was not influenced to a great extent by weather factors during the morning, so this period was chosen to evaluate the influence of the phase of the estrous cycle on VST. The VST was less during days 16, 20, 24 and 28 (diestrus) and P4 concentration was inversely proportional to the VST. Muzzle, orbital area and RT, however, were not of the same pattern. Negative correlations were observed between VST and P4 concentrations. It is concluded that VST undergoes changes during the reproductive phases, correlating with P4 concentration. The weather factors influence the temperatures of the body surface areas, and the morning is the most desirable time to perform the thermographies.

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Estrual rise in body temperature in the bovine I. Temporal relationships with serum patterns of reproductive hormones

Cited by 30 publications

References 19 publications

Relationship of ruminal temperature with parturition and estrus of beef cows1

Relationship of ruminal temperature with parturition and estrus of beef cows1

Scientific findings related to changes in vascular microcirculation using infrared thermography in the river buffalo

Effect of estrous cycle phase on vulvar, orbital area and muzzle surface temperatures as determined using digital infrared thermography in buffalo

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