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| Registros recuperados: 38 | |
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| Joset, Waleria Cristina Lopes; Silva, Jamile Andréa Rodrigues da; Godinho, Letícia Athaíde; Barbosa, Antônio Vinicius Corrêa; Martorano, Lucieta Guerreiro; Lourenço Júnior, José de Brito. |
| This research aimed to assess the effects of dry season climate variables on Marajó Island, Brazil, on the thermoregulatory responses of twenty female buffaloes, assigned to shaded (SD), and unshaded groups (US). Data on air temperature (AT), relative air humidity, wind velocity (WV), respiratory rate (RR), rectal temperature (RT), and body surface temperature (BST) were recorded at 6 a.m., 10 a.m., 2 p.m., 6 p.m., and 10 p.m. The temperature and humidity index (THI), practical buffalo comfort climatic conditions index (BCCCIp), and practical buffalo environmental comfort index (BECIp) were calculated. At 10 a.m. and 2 p.m., WV was the highest. The RR of animals in both treatments differed only at 10 a.m. and 2 p.m. A difference in RT between treatments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.05.00-4 e 5.04.05.01-2 heat stress; Thermoregulation; Bubalus bubalis.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37641 |
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| Neves, Maria Luciana Menezes Wanderley; Universidade Federal Rural de Pernambuco; Azevedo, Marcílio de; Universidade Federal Rural de Pernambuco; Costa, Lígia Alexandrina Barros da; Universidade Federal Rural de Pernambuco; Guim, Adriana; Universidade Federal Rural de Pernambuco; Leite, Amanda Menino; Universidade Federal Rural de Pernambuco; Chagas, Juana Cariri; Universidade Federal Rural de Pernambuco. |
| O objetivo deste trabalho foi estimar os valores críticos do Índice de Conforto Térmico (ICT) para ovinos deslanados da raça Santa Inês em condições de pastejo, com base nos parâmetros fisiológicos. O experimento foi conduzido de janeiro a abril na região agreste do Estado de Pernambuco. Os parâmetros temperatura retal (TR) e frequência respiratória (FR) foram avaliados três vezes por semana nos períodos da manhã e da tarde. O ambiente foi monitorado diariamente, por intermédio de uma estação meteorológica instalada ao lado do piquete experimental. As medidas para as análises de regressão foram obtidas de 15 ovinos da raça Santa Inês, sendo cinco de cada cor: branca, castanha e preta. Baseando-se na TR, os valores críticos do ICT estimados para os ovinos... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.04.05.00-4 cor do pelame; Fisiologia; Termorregulação Produção Animal coat color; Physiology; Thermoregulation. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3766 |
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| Silva, Tairon Pannunzio Dias e; Marques, Carlo Aldrovandi Torreão; Torreão, Jacira Neves da Costa; Bezerra, Leílson Rocha; Araujo, Marcos Jácome de; Lima, Lucas Almeida. |
| This study was realized to evaluate the effect of concentrate supplementation and time scales of evaluation on behavioral and physiological responses of pregnant ewes on grazing system. The experimental design was a randomized 2 x 2 x 3 factorial arrangement (two breeds: Morada and Santa Inês; two concentrate supplementation levels: 0.5 and 1.5% of body weight; and three time scales of evaluation: 10, 20 and 30 minutes) with six replicates per treatment. The physiological parameters were influenced by period of the day and breeds, with higher values in the afternoon to Santa Inês ewes. Also, influence of concentrate supplementation was found between the breeds with greater values in Santa Inês ewes. But, it did not alter the physiological parameters among... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal nutrition; Behavior; Native ewes; Semi-arid conditions; Thermoregulation. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28748 |
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| Rocha, Ronne-von Ribeiro da; Universidade Federal do Piauí; Oliveira, Petrônio Batista de; Universidade Federal do Piauí; Nunes, Amaury Guimarães; Universidade Federal do Piauí; Silva, Tairon Pannunzio Dias e; Universidade de São Paulo; Pereira, Alécio Matos; Universidade Federal do Piauí; Torreão, Jacira Neves da Costa; Colégio Técnico de Bom Jesus. |
| Current analysis evaluated adaptive parameters and thermal comfort of postpartum ewes fed on concentrate supplementation in grazing system. Thirty lactating pluriparous sheep, 16 Santa Inês (SI) and 14 Morada Nova (MN) were used. Physiological parameters such as respiratory rate (RR), heart rate (HR) and rectal temperature (RT) were measured, in that order, with the animals at rest in the morning (6:00-7:00 am) and in the afternoon (1:00-2:00 pm), respectively, every seven days, with 10 samples. A significant effect (p < 0.05) for RR and HR was reported in the strain. Similar behavior was reported for RR between the breeds where MN sheep had high adaptability. Supplementation levels of 0.5 and 1.5% influenced (p < 0.05) RR which was stronger... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental factors; Heat stress; Nutrition; Thermoregulation. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22823 |
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| DURAN,FERNANDO; BORETTO,JORGELINA M.; FERNÁNDEZ,JIMENA B.; MOLINA,MORA IBÁÑEZ; MEDINA,MARLIN S.; IBARGÜENGOYTÍA,NORA R.. |
| Abstract: The immune state is an essential component of survival as it directly influences physiological performance and health status. Variation in the leukocyte profile, a significantly increase in body temperature, and a detriment of the eco-physiological performance are among the possible consequences of an unhealthy state. In this study we analyse and discuss how field body temperature, preferred body temperature, the speed for sprint and long runs, locomotor stamina, and body condition can be affected by the immunological state (i.e. leukocyte profile) in a wild population of Liolaemus sarmentoi. Juveniles and adult males with a high percentage of eosinophils, basophils, and a low percentage of monocytes preferred higher body temperatures in a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body condition; Leukocyte profile; Liolaemus sarmientoi; Locomotor performance; Thermoregulation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700608 |
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| Toledo,Vagner de Alencar Arnaut de; Nogueira-Couto,Regina Helena. |
| This experiment was carried out to study the internal temperature regulation of a colony of Africanized honey bees (AFR), compared with hybrid Caucasian (CAU), Italian (ITA), and Carniolan (CAR) bees, during the period of one year and different size hives located in a sub-tropical region. The instant internal temperature, 33.7 ± 1.5° C for the AFR, 33.5 ± 1.4° C for the CAU, 33.7 ± 1.5° C for the ITA and 33.8 ± 1.4° C for the CAR, did not show any significant difference (P>0.05). The maximum temperature (36.1 ± 2.3° C) was statistically different (P<0.05) from the minimum (27.6 ± 5.3° C). There was no difference (P>0.05) in the mean internal temperature, between the nucleus (31.7 ± 6.3° C) and the brood nest (32.1 ± 5.3° C) measured... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Temperature; Honey bee; Apis; Thermoregulation; Hive; Hybrids. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400007 |
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| Fonseca,S. F.; Teles,M. C.; Ribeiro,V. G. C.; Magalhães,F. C.; Mendonça,V. A.; Peixoto,M. F. D.; Leite,L. H. R.; Coimbra,C. C.; Lacerda,A. C. R.. |
| Individuals with systemic arterial hypertension have a higher risk of heat-related complications. Thus, the aim of this study was to examine the thermoregulatory responses of hypertensive subjects during recovery from moderate-intensity exercise performed in the heat. A total of eight essential hypertensive (H) and eight normotensive (N) male subjects (age=46.5±1.3 and 45.6±1.4 years, body mass index=25.8±0.8 and 25.6±0.6 kg/m2, mean arterial pressure=98.0±2.8 and 86.0±2.3 mmHg, respectively) rested for 30 min, performed 1 h of treadmill exercise at 50% of maximal oxygen consumption, and rested for 1 h after exercise in an environmental chamber at 38°C and 60% relative humidity. Skin and core temperatures were measured to calculate heat exchange... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypertension; Hot Environment; Thermoregulation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001201122 |
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| Kunstetter,A.C.; Wanner,S.P.; Madeira,L.G.; Wilke,C.F.; Rodrigues,L.O.C.; Lima,N.R.V.. |
| There is evidence that brain temperature (Tbrain) provides a more sensitive index than other core body temperatures in determining physical performance. However, no study has addressed whether the association between performance and increases in Tbrain in a temperate environment is dependent upon exercise intensity, and this was the primary aim of the present study. Adult male Wistar rats were subjected to constant exercise at three different speeds (18, 21, and 24 m/min) until the onset of volitional fatigue. Tbrain was continuously measured by a thermistor inserted through a brain guide cannula. Exercise induced a speed-dependent increase in Tbrain, with the fastest speed associated with a higher rate of Tbrain increase. Rats subjected to constant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brain cortex; Fatigue; Hyperthermia; Speed; Thermoregulation; Treadmill running.. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000800679 |
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| Ribeiro,G.A.; Rodrigues,L.O.C.; Moreira,M.C.V.; Silami-Garcia,E.; Pascoa,M.R.S.; Camargos,F.F.O.. |
| Hydration is recommended in order to decrease the overload on the cardiovascular system when healthy individuals exercise, mainly in the heat. To date, no criteria have been established for hydration for hypertensive (HY) individuals during exercise in a hot environment. Eight male HY volunteers without another medical problem and 8 normal (NO) subjects (46 ± 3 and 48 ± 1 years; 78.8 ± 2.5 and 79.5 ± 2.8 kg; 171 ± 2 and 167 ± 1 cm; body mass index = 26.8 ± 0.7 and 28.5 ± 0.6 kg/m²; resting systolic (SBP) = 142.5 and 112.5 mmHg and diastolic blood pressure (DBP) = 97.5 and 78.1 mmHg, respectively) exercised for 60 min on a cycle ergometer (40% of VO2peak) with (500 ml 2 h before and 115 ml every 15 min throughout exercise) or without water ingestion, in a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypertension; Exercise; Water ingestion; Heat; Thermoregulation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000300019 |
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| Vimieiro-Gomes,A.C.; Magalhães,F.C.; Amorim,F.T.; Machado-Moreira,C.A.; Rosa,M.S.; Lima,N.R.V.; Rodrigues,L.O.C.. |
| Centrally stimulated sweat rate produced by graded exercise until exhaustion was compared to the local sweat rate induced by pilocarpine, often used as a sweating index for healthy individuals. Nine young male volunteers (22 ± 4 years) were studied in temperate environment in two situations: at rest and during progressive exercise with 25 W increases every 2 min until exhaustion, on a cycle ergometer. In both situations, sweating was induced on the right forearm with 5 ml 0.5% pilocarpine hydrochloride applied by iontophoresis (1.5 mA, 5 min), with left forearm used as control. Local sweat rate was measured for 15 min at rest. During exercise, whole-body sweat rate was calculated from the body weight variation. Local sweat rate was measured from the time... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sweat rate; Graded exercise test; Pilocarpine; Thermoregulation. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000700017 |
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| Hudson,A.S.R.; Kunstetter,A.C.; Damasceno,W.C.; Wanner,S.P.. |
| Physical exercise triggers coordinated physiological responses to meet the augmented metabolic demand of contracting muscles. To provide adequate responses, the brain must receive sensory information about the physiological status of peripheral tissues and organs, such as changes in osmolality, temperature and pH. Most of the receptors involved in these afferent pathways express ion channels, including transient receptor potential (TRP) channels, which are usually activated by more than one type of stimulus and are therefore considered polymodal receptors. Among these TRP channels, the TRPV1 channel (transient receptor potential vanilloid type 1 or capsaicin receptor) has well-documented functions in the modulation of pain sensation and thermoregulatory... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Afferent; Capsaicin; Hyperthermia; Metabolism; Physical activity; Thermoregulation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000600301 |
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| Rodrigues,L.O.C.; Oliveira,A.; Lima,N.R.V.; Machado-Moreira,C.A.. |
| Thermal environmental stress can anticipate acute fatigue during exercise at a fixed intensity (%VO2max). Controversy exists about whether this anticipation is caused by the absolute internal temperature (Tint, ºC), by the heat storage rate (HSR, cal/min) or by both mechanisms. The aim of the present study was to study acute fatigue (total exercise time, TET) during thermal stress by determining Tint and HSR from abdominal temperature. Thermal environmental stress was controlled in an environmental chamber and determined as wet bulb globe temperature (ºC), with three environmental temperatures being studied: cold (18ºC), thermoneutral (23.1ºC) or hot (29.4ºC). Six untrained male Wistar rats weighing 260-360 g were used. The animals were submitted to... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Thermoregulation; Exercise; Fatigue; Heat storage rate. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000100018 |
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| Kawabata,Celso Y.; Jesus,Lindalva de A. de; Silva,Ana Paula V. da; Sousa,Thiago V. R. de; Cruz,Luis F. B. da. |
| Thermal discomfort inside facilities is one of the factors responsible for low productivity of caprines in the Brazilian Northeast region, because inadequate weather conditions can cause elevated rectal temperature, increased respiratory rate, decreased food ingestion and reduced production. The present paper aimed to study the behavior of physiological thermoregulation of the animals (respiratory rate - RR and rectal temperature - RT) at four different times of the day (8 a.m., 11 a.m., 2 p.m. and 5 p.m.) and their relation to bioclimatic indexes (Temperature Humidity Index - THI, Black Globe Humidity Index - BGHI and Radiant Heat Load - RHL) in order to determine whether the type of covering used in the animals facilities (ceramic covering - CC, asbestos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ambience; Respiratory rate; Rectal temperature; Thermoregulation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000500003 |
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| Fonseca,Patrícia C. de F; Almeida,Eduardo A. de; Passini,Roberta. |
| In Tropical regions, the animal performance is often affected by climate conditions. This study aimed to evaluate covering materials in individual shelters, normally used to house dairy calves, and its influence on the calves physiology and performance. The design used was completely randomized, with a 2x3 factorial arrangement to compare the averages of 5% through the Tukey's test, i.e., both genders- and three types of covering in the shelters (Z - zinc; AC - asbestos cement; and WPAC - white-painted asbestos cement). Parameters evaluated included daily weight gain (DWG), dry matter intake (DMI), feed conversion (FC), rectal temperature (RT), and respiratory frequency (RF). Results showed significant differences (P < 0.05) among males (1.04kg/day) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermoregulation; Weight gain; Feed conversion. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600005 |
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| Gomes,CA; Almeida-Santos,SM. |
| Many factors influence microhabitat including climate and the occurrence of predators, prey and suitable shelters. The influence of predators in a semi-extensive breeding system is minimized due to frequent monitoring of the area. This situation enables the independent analysis of such other variables as refuges and temperature. Some specimens of the Viperidae family are kept in a semi-extensive breeding system at the Butantan Institute for display and study. These animals are widely distributed in the Atlantic Forest and Cerrado, two biomes with distinct climatic characteristics. We compared the daily activity pattern and microhabitat use of the species Bothrops jararaca and Crotalus durissus terrificus. Our main questions were whether rattlesnakes and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microhabitat selection; Snakes; Thermoregulation; Viperidae. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000400007 |
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| Registros recuperados: 38 | |
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