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| Gesualdi Júnior,Antonio; Sales,Érika Sá Viana; Freitas,Rafael Souza; Henry,Fábio da Costa; Oliveira,Vicente de Paulo Santos de; Gesualdi,Ana Cristina Ladeira de Souza. |
| The experiment was carried out with sheep during the finishing phase in a partial confinement system to evaluate the following physiological parameters: rectal temperature (RT), respiratory rate (RR), heart rate (HR), productive performance and carcass characteristics. Fourteen uncastrated sheep with an average initial age of 90 days belonging to two genetic groups were used. There were seven Santa Inês animals, whose average initial live weight (ILW) was 23.65 kg, and seven F1 Dorper × St. Inês animals, with an ILW of 20.02 kg. The treatments were the two genetic groups and two times for the collection of the physiological parameters, at 09.00 h and 15.00 h. Evaluation took place once a week, in a shared stall, always following a 20-min grazing activity.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Adaptability; Animal production; Bioclimatology. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001000556 |
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| Silva Filho, Florisval Protásio; Universidade Federal Rural de Pernambuco; Azevedo, Marcílio de; Universidade Federal Rural de Pernambuco; Costa, Lígia Alexandrina Barros da; Universidade Federal Rural de Pernambuco; Lana, Ângela Maria Quintão; Universidade Federal de Minas Gerais; Ferreira, Marcelo de Andrade; Universidade Federal Rural de Pernambuco; Batista, Ângela Maria Vieira; Universidade Federal Rural de Pernambuco. |
| This study evaluated the influence of coat color on the heat tolerance and performance of 21 Santa Inês lambs, non-pregnant, non-lactating, seven animals of each coat color: black, brown and white, with an average initial weight of 25.71, 24.85 and 25.00 kg, for white, brown and black animals, respectively, and 12 months of age. The study was conducted during summer in the agreste region of Pernambuco State, Brazil. Twenty-one sheeps were assigned to a completely randomized design with three treatments and seven replicates. The heat tolerance index and the animal performance were evaluated once a week for eight weeks. White sheep were slightly superior in heat tolerance to brown and black sheep, 88.3, 85.5 and 86.6 respectively, but this was not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptation; Bioclimatology; Climate; Heat stress. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18466 |
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| Silva,Jamile Andréa Rodrigues da; Araújo,Airton Alencar de; Lourenço Júnior,José de Brito; Santos,Núbia de Fátima Alves dos; Viana,Rinaldo Batista; Garcia,Alexandre Rossetto; Rondina,Davide; Grise,Márcia Mascarenhas. |
| The hormonal responses of 20 female buffaloes raised under the sun (SS group) or in the shade (CS group) in Belém, Pará, Brazil, were assessed. The CS group (n = 10) was kept in a silvopasture system featuring Racosperma mangium, whereas the SS group (n = 10) was kept in paddocks without shade featuring Brachiaria humidicola, drinking water, and mineral salt. The following parameters were measured for each treatment: dry-bulb temperature (AT), relative humidity (RH), and black-globe temperature in order to calculate the globe temperature and humidity index (GTHI). Blood sample collections to quantitatively determine levels of cortisol, triiodothyronine (T3), and thyroxine (T4) were performed every 14 days, at 13.00 h. Different seasons of the year were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioclimatology; Cortisol; Ruminant; Silvopasture system; Thyroid hormone. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000100007 |
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| Taborda,Paula Alicia Batista; Saravia,Celmira Tomasina; Espasandin,Ana Carolina. |
| ABSTRACT: Adaptative traits (rectal temperature-RT, respiratory rate-RR) and grazing behavior (Grazing, Ruminating and Rest time, and Sun or Shade time) of Bonsmara-Hereford crossbred-BH, n = 15, and purebred Hereford-HH, n = 18, yearling heifers, in a grazing system of Uruguay. Environment characterization was made using THIadjusted by radiation and wind speed (no, mild, and severe heat weaves), and the comprehensive climatic index-CCI (no, middle, moderate and severe stress). Adaptative traits were measured twice a day, weekly, in two consecutive days in summer and winter at 08h00 and 16h00. Grazing behavior was observed from 07h00 to 21h00 each 600 s twice in summer. The records were analyzed using a mixed model. Significant effect of genotype was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Grazing behavior; Thermoregulation; Bioclimatology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600479 |
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| Paim,Tiago do Prado; Martins,Rafhael Felipe Saraiva; Cardoso,Cyntia; Dallago,Bruno; Louvandini,Helder; McManus,Concepta. |
| There is an abundance of thermal indices with different input parameters and applicabilities. Infrared thermography is a promising technique for evaluating the response of animals to the environment and differentiating between genetic groups. Thus, the aim of this study was to evaluate superficial body temperatures of lambs from three genetic groups under different environmental conditions, correlating these with thermal comfort indices. Forty lambs (18 males and 22 females) from three genetic groups (Santa Inês, Ile de France × Santa Inês and Dorper × Santa Inês) were exposed to three climatic conditions: open air, housed and artificial heating. Infrared thermal images were taken weekly at 6h, 12h and 21h at the neck, front flank, rear flank, rump, nose,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian savanna; Bioclimatology; Thermal stress; Wind protection; Artificial warming. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500002 |
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