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A decision-tree-based model for evaluating the thermal comfort of horses Scientia Agricola
Maia,Ana Paula de Assis; Oliveira,Stanley Robson de Medeiros; Moura,Daniella Jorge de; Sarubbi,Juliana; Vercellino,Rimena do Amaral; Medeiros,Brenda Batista Lemos; Griska,Paulo Roberto.
Thermal comfort is of great importance in preserving body temperature homeostasis during thermal stress conditions. Although the thermal comfort of horses has been widely studied, there is no report of its relationship with surface temperature (T S). This study aimed to assess the potential of data mining techniques as a tool to associate surface temperature with thermal comfort of horses. T S was obtained using infrared thermography image processing. Physiological and environmental variables were used to define the predicted class, which classified thermal comfort as "comfort" and "discomfort". The variables of armpit, croup, breast and groin T S of horses and the predicted classes were then subjected to a machine learning process. All variables in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feature selection methods; Data mining; Surface temperature; Infrared thermography; Thermoregulation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600001
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Assessment of scrotal termography and semen quality in buffalo bulls (Bubalus bubalis)raised under humid tropical environment. Repositório Alice
BARROS, D. V.; SILVA, L. X.; KAHWAGE, P. R.; SILVA, A. O.; SILVA, A. G.; FRANCO, I. M.; MARTORANO, L. G.; LOURENÇO JUNIOR, J. B.; ROMANELLO, N.; GARCIA, A. R..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Andrology; Infrared thermography; Water buffalo.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1023891
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Broiler surface temperature distribution of 42 day old chickens Scientia Agricola
Nääs,Irenilza de Alencar; Romanini,Carlos Eduardo Bites; Neves,Diego Pereira; Nascimento,Guilherme Rodrigues do; Vercellino,Rimena do Amaral.
Broiler chickens in Brazil are generally reared from 1 to 42 days when they are exposed to procedures such as fasting, harvesting, crating and transport to slaughter. Maintaining homeostasis is of great importance for broiler survival under harsh environment especially prior to slaughter. Heat loss varies in the distinct parts of the body during the growth period, and it is related to the air temperature of the environment and to the amount of feather covering. This research aimed to study the surface temperature distribution using infrared thermographic image processing to characterize 42 day old broiler chicken surface temperature prior to slaughter. Broilers were reared for 42 days and prior to harvest and transport to slaughter the infrared surface...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal comfort; Heat loss; Thermoregulation; Infrared thermography.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500001
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Effect of chamomile extract on the welfare of laying Japanese quail R. Bras. Zootec.
Tenório,Karine Isabela; Sgavioli,Sarah; Roriz,Beatriz Cardoso; Ayala,Cristina Martinez; Santos,Wellington dos; Rodrigues,Paulo Henrique Mazza; Almeida,Vitor Rosa de; Garcia,Rodrigo Garófallo.
ABSTRACT The objective of this study was to evaluate the effect of chamomile extract on Japanese quail on their performance, animal behavior, tonic immobility, body injuries, and surface temperature. The trial was conducted using 108 quail distributed in a completely randomized experimental design, with three treatments (0, 2.5, and 5.0 g chamomile/kg of feed), six replicates, and six birds per treatment, evaluated in six measures repeated in time (14, 28, 42, 56, 70, and 84 days of trial). The inclusion of chamomile presented a quadratic effect on sitting behavior, estimating the inclusion of 1.8 g chamomile/kg to maximize this behavior. There was a decreasing linear effect for aggressive pecking, that is, the higher the inclusion of chamomile in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix cotunix japonica; Infrared thermography; Matricaria recutita; Phytotherapics; Tonic immobility.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900760
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ESTIMATION OF RESPIRATORY FREQUENCY AND RECTAL TEMPERATURE ON PIGS IN HEAT STRESS BY FUZZY LOGIC REA
Oliveira,Rodrigo F. de; Ferreira,Rony A.; Abreu,Lucas H. P.; Yanagi Júnior,Tadayuki; Lourençoni,Dian.
ABSTRACT Physiological parameters such as respiratory frequency and rectal temperature stand out as indicators for heat stress in pigs, however, requiring time and labor for measurements. The possibility of using infrared thermography associated with prediction systems of these physiological variables can help in decision making, allowing greater welfare and productivity of the animals. With this objective, an experiment was carried out with growing pigs submitted to acute and chronic heat stress, working with a thermoneutrality temperature (22° C) and heat stress (34° C). The results were used for the development of a fuzzy model using as input variables: air dry bulb temperature (°C), average surface temperature (°C) and, as output variables: respiratory...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal environment; Fuzzy set theory; Pig breeding farm; Infrared thermography.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400457
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Heat loss in one day old pullets inside a hatchery REA
Nääs,Irenilza de A.; Graciano,Daniela E.; Garcia,Rodrigo G.; Santana,Mayara R. de; Neves,Diego P..
After hatching, pullets are transported to brooding area and vaccinated. One day old chicks have not already developed thermoregulation ability; thus, brooding temperature variations may affect pullet quality leading to broiler meat production losses. This research aimed to calculate sensible heat loss in one day old pullets in hatching area and vaccination room. Ten one day old pullets were randomly selected from hatching area of a commercial hatchery. Infrared images were used to calculate bird surface temperature. Exposure areas for the two conditions were quantified, and both air temperature and wind speed was recorded. Total sensible heat loss was calculated as heat loss by radiation plus heat loss by convection. It was found that heat transfer occurs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sensible heat; Post-hatching; Infrared thermography.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400001
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PERFORMANCE OF FUZZY INFERENCE SYSTEMS TO PREDICT THE SURFACE TEMPERATURE OF BROILER CHICKENS REA
Bahuti,Marcelo; Abreu,Lucas H. P.; Yanagi Junior,Tadayuki; Lima,Renato R. de; Campos,Alessandro T..
ABSTRACT This study aimed to compare fuzzy systems with different configurations to predict the surface temperature (ts) of broiler chickens subjected to different intensities and durations of thermal challenges in the second week of life. Data on the ts of broiler chickens aged 8 to 11 days were acquired by infrared thermography and subjected to combinations of four dry-bulb temperatures (tdb) (24, 27, 30, and 33 °C) and four durations of thermal challenges (DTC) (1, 2, 3, or 4 days). The input variables of the fuzzy systems were tdb and DTC, and the output variable was ts. The Mamdani inference method involving five defuzzification methods [center of gravity (centroid), bisector of the area (bisector), largest of maximum (lom), middle of maximum (mom),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pertinence functions; Fuzzy logic; Defuzzification methods; Fuzzy inference methods; Chicks; Infrared thermography.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600813
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Productive, Qualitative, and Physiological Aspects of Layer Hens Fed with Propolis Rev. Bras. Ciênc. Avic.
Belloni,M; Almeida Paz,ICL; Nääs,IA; Alves,MCF; Garcia,RG; Caldara,FR; Seno,LO.
ABSTRACT Laying hens reared under tropical conditions are usually under heat stress. Propolis is known for its pharmaceutical properties, such as increasing cell tolerance to hyperthermia, because of its antioxidants effects. This study aimed at evaluating the influence of different dietary propolis inclusion levels on the performance, egg quality, and bird surface temperature of layers. In this experiment 120 55-wk-old Isa Brown(r) layers were distributed according to a completely randomized experimental design into four treatments (0, 1, 2 and 3% dietary propolis inclusion levels), with three replicates of ten birds each. Performance and egg quality parameters, and birds' surface temperature were evaluated. Egg production, egg mass, feed intake, and feed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg production; Infrared thermography; Natural diet supplement.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400467
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Surface temperature distribution in broiler houses Rev. Bras. Ciênc. Avic.
Baracho,MS; Nääs,IA; Nascimento,GR; Cassiano,JA; Oliveira,KR.
In the Brazilian meat production scenario broiler production is the most dynamic segment. Despite of the knowledge generated in the poultry production chain, there are still important gaps on Brazilian rearing conditions as housing is different from other countries. This research study aimed at analyzing the variation in bird skin surface as function of heat distribution inside broiler houses. A broiler house was virtually divided into nine sectors and measurements were made during the first four weeks of the grow-out in a commercial broiler farm in the region of Rio Claro, São Paulo, Brazil. Rearing ambient temperature and relative humidity, as well as light intensity and air velocity, were recorded in the geometric center of each virtual sector to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler production; Housing; Infrared thermography.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300003
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Testicular thermoregulation, scrotal surface temperature patterns and semen quality of water buffalo bulls reared in a tropical climate. Repositório Alice
SILVA, L. K. X.; SOUSA, J. S.; SILVA, A. O. A. da; LOURENÇO JUNIOR, J. de B.; FATURI, C.; MARTORANO, L. G.; FRANCO, I. M.; PANTOJA, M. H. A.; BARROS, D. V.; GARCIA, A. R..
This study evaluated the capacity of thermoregulation and its consequences on the scrotal surface temperature patterns and semen quality of buffalo bulls raised in a wet tropical climate. Eleven water buffaloes were evaluated in the rainiest, in the transitional and in the less rainy season. Air temperature and humidity were consistently high, but the animals did not show thermal stress in any season. The scrotal temperature gradient of buffalo bulls using infrared thermography was described, and three parallel and decreasing thermal bands were characterised. Sperm quality (n = 176 ejaculates) was maintained in normal parameters over the periods. Pearson's coefficients showed that sperm volume and progressive motility were negatively correlated with ocular...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bubalus bubalis; Infrared thermography; Scrotal temperatures; Semen.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1070615
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Thermographic images from healthy knees between dogs with long and short hair Ciência Rural
Nomura,Roberto Harutomi Corrêa; Freitas,Itallo Barros de; Guedes,Rogério Luizari; Araújo,Frederico Fernandes; Mafra,Amanda Cristina Duarte Neves; Ibañez,José Fernando; Dornbusch,Peterson Triches.
ABSTRACT: The aim of this study was to investigate the influence of fur length in the evaluation of knees temperature in healthy dogs, using infrared thermography. This is a non-invasive diagnosis that is able to assess the microcirculation of the internal skin. Changes in temperature reflect from inflammatory reactions and vascular infarction to neurological disorders. Knees of 30 healthy dogs were analyzed, with up to 11 pounds of weight, screened by clinical examination and radiographic examination. Group A, consisting of 13 dogs with short fur, with 26 knees evaluated in total. Group B included animals with long fur, consisting of 17 animals, with 29 knees evaluated in total. The average temperatures of the cranial, lateral, caudal and medial sides of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coat; Knees; Infrared thermography; Imaging diagnosis.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200600
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Thermoregulatory responses and reproductive traits in composite beef bulls raised in a tropical climate. Repositório Alice
ROMANELLO, N.; LOURENÇO JUNIOR, J. de B.; BARIONI JUNIOR, W.; BRANDÃO, F. Z.; MARCONDES, C. R.; PEZZOPANE, J. R. M.; PANTOJA, M. H. de A.; BOTTA, D.; GIRO, A.; MOURA, A. B. B.; BARRETO, A. do N.; GARCIA, A. R..
It is believed that increased livestock production is limited by tropical climate. Thermal imbalance in bulls can lead to hyperthermia and alter testicularmetabolism, causing subfertility or infertility. Therefore, the thermoregulation of composite Canchim bulls (5/8 Charolais × 3/8 Zebu) raised in tropical climate as well as their consequences in the physiological, hematological, hormonal, and andrological parameters were evaluated monthly. The bulls (n = 18; 30.0 ± 1.5 months; 503.8 ± 23.0 kg) were kept on pasture, in a single group, from August 2015 to March 2016, comprising the winter, spring, and summer seasons. Biometeorological variables were continuously monitored, and the Temperature and Humidity Index (THI) was calculated. A greater thermal...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Tropical livestock; Homeothermy; Infrared thermography; Semen quality; Sêmen; Thermoregulation; Animal welfare.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095682
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