scholarly journals Comportamento de Leitões na Fase de Creche Criados em Região de Clima Tropical

2021 ◽  
Vol 25 (2) ◽  
pp. 144-147
Author(s):  
Rebeca de Andrade Parente ◽  
Belise Maria Oliveira Bezerra ◽  
Tiago Silva Andrade ◽  
Lina Raquel Santos Araújo ◽  
Ricardo Toniolli
Keyword(s):  
Thermal Comfort ◽  
Animal Welfare ◽  
Behavioral Problems ◽  
Average Weight ◽  
Or Management ◽  
Commercial Farm ◽  
Temperature And Humidity ◽  
Productive Potential ◽  
Observation Times ◽  
Lying Down

O ambiente em que o animal habita está relacionado com o comportamento que esse vai expressar, portanto, problemas comportamentais podem ser indicativos de deficiências ambientais ou de manejo, alterando o bem-estar do animal. O objetivo deste trabalho foi avaliar o comportamento de leitões, na fase de creche, de acordo com variações de temperatura e umidade do ambiente em granja comercial localizada em Maranguape-Ceará. Foram utilizados 60 leitões de ambos os sexos desmamados aos 21 dias de idade com peso médio de 6,1±0,4 kg distribuídos em quatro baias de 15 animais cada, que foram observados em dois horários por dia. Foi instalada uma câmera, na parte superior da baia, para fazer a filmagem dos leitões, que filmava das 05:00 horas às 07:00 horas da manhã, e de 12:00 horas às 14:00 horas da tarde, além de serem registradas a temperatura e umidade, através de um termohigrômetro. Para analisar o comportamento dos animais foi utilizada uma ficha de etograma, calculando-se os percentuais de ocorrência de cada comportamento. As médias de temperatura registradas foram 25 e 28 °C e de umidade 84% e 73% para os horários 05:00 horas e 12:00 horas, respectivamente. Os animais passaram a maior parte do tempo dormindo ou deitados (69 e 70%) em ambos os horários de observação. O comportamento apresentado pelo animal pode ser um indicativo de conforto térmico, situação essencial para expressão de seu potencial produtivo. Palavras-chave: Bem-Estar Animal. Conforto Térmico. Etograma. Suinocultura. Abstract The environment in which the animal lives is related to the behavior it will express, so behavioral problems may be indicative of environmental or management deficiencies, altering the animal’s welfare. The objective of this work is to evaluate the piglets behavior in the nursery phase according to temperature and humidity variations in a commercial farm located in Maranguape-Ceará. Sixty piglets of both sexes weaned at 21 days of age with an average weight of 6.1±0.4 kg were used, distributed in four pens of 15 animals each, which were observed at two times per day. A camera was installed in the upper part of the pen for filming the piglets, which filmed from 5:00 am to 7:00 am, and from 12:00 pm to 2:00 pm, and was recorded at temperature and humidity through a hygrometer term. To analyze the animals behavior, an ethogram form was used. The average temperatures recorded were 25 and 28 °C and humidity 84% and 73% at 05:00 a.m. and 12:00 p.m. hours, respectively. The animals spent most of the time sleeping or lying down (69 and 70%) at both observation times. The behavior shown by the animal can be an indication of thermal comfort, an essential situation for the expression of its productive potential. Keywords: Animal Welfare. Thermal Comfort. Ethogram. Pig Breeding.

scholarly journals The impact of thermal comfort in the perceived level of service and energy costs of three Brazilian airports

2013 ◽  
Vol 7 (2) ◽  
pp. 192-206 ◽  
Author(s):  
Jacqueline Elhage Ramis ◽  
Emmanuel Antonio dos Santos
Keyword(s):  
Thermal Comfort ◽  
Air Conditioning ◽  
International Standards ◽  
Combined System ◽  
Service Levels ◽  
Transportation Demand ◽  
Temperature And Humidity ◽  
Air Conditioning Systems ◽  
Air Circulation ◽  
The Impact

To evaluate airports' current thermal comfort temperature and humidity were registered in three main Brazilian international airports, other variables were local region climate characteristics and the constructive types of passenger terminal buildings. The Brazilian air transportation demand has considerably grown over the last decade, with some airports reaching their capacity. Thermal discomfort may be a key driver of passenger perceptions of airport service levels, specially under capacity overload situations. Therefore, to achieve airport thermal comfort within this new scenario, and with the imminent and future expansions of the airport system, certainly put extra work on the existing air conditioning systems, consequently increasing energy consumption and its associated costs. Collected temperature and humidity from each study case subsided the data for the psychrometric charts. The evidences showed temperatures below the international standards requirements for thermal comfort levels. These charts also indicated that adequate building types with natural air circulation, provides the best levels of thermal comfort. Results suggest the importance of considering the implementation of a combined system using artificial and natural air conditioning in the planning of future expansions.

scholarly journals DETERMINAÇÃO DO ITU – ÍNDICE DE TEMPERATURA E UMIDADE DA REGIÃO DE ARAGUAÍNA-TO PARA AVALIAÇÃO DO CONFORTO TÉRMICO DE BOVINOS LEITEIROS / DETERMINATION OF ITU - TEMPERATURE AND HUMIDITY INDEX OF THE REGION OF ARAGUAÍNA-TO FOR THE EVALUATION OF THE THERMAL COMFORT OF MILK CATTLE

2020 ◽  
Vol 6 (9) ◽  
pp. 69254-69258
Author(s):  
Clauber Rosanova ◽  
Geovanne Ferreira Rebouças ◽  
Mírian das Mercês Pereira da Silva ◽  
Douglas Messias Lamounier Camargos Rezende ◽  
Alysson Soares da Rocha ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Temperature And Humidity ◽  
Humidity Index

scholarly journals Supervisory System For Monitoring, Control And Estimating Thermal Comfort For Broiler and Laying Hens Production Sheds

2020 ◽  
Vol 8 (3) ◽  
pp. 316-331
Author(s):  
Mario Mollo Neto ◽  
Mariana Matulovic ◽  
Paulo Sérgio Barbosa dos Santos
Keyword(s):  
Thermal Comfort ◽  
Real Time ◽  
Laying Hens ◽  
Production Environment ◽  
Supervisory System ◽  
Temperature And Humidity ◽  
Humidity Index ◽  
Automatic Activation ◽  
And Control ◽  
Productivity And Competitiveness

This research aims to promote the project for the construction of software, firmware, and micro-controlled hardware, which together allow the automatic control of the temperature and humidity index (THI) in real-time the intensive production environment in poultry and laying hens production houses, thus avoiding productive losses due to the stress to which the birds are subjected. This system aims, from the information from a set of sensors, connected to a microcontroller acquisition and control board, to infer the temperature and humidity index from the measured climatic variables, to enable the corresponding activation of electronic interfaces with electric actuators, for the automatic activation of ventilation devices, humidification and curtain actuation and the lighting of production houses, keeping the environmental conditions of the house within a convenient range of temperature and relative humidity to ensure thermal comfort and thus avoiding bird stress. Thus, helping to mitigate production losses and facilitating managers real-time monitoring of the shed to achieve greater productivity and competitiveness.

scholarly journals Development and assessment of a low-cost embedded system for evaluation of animal thermal comfort

2021 ◽  
Vol 14 (3) ◽  
pp. 5-13
Author(s):  
M. V. S. Chaves ◽  
W. G. Vale ◽  
M. M. Cunha ◽  
P. A. C. B. Vale ◽  
A. M. Enes ◽  
...  
Keyword(s):  
Embedded System ◽  
Thermal Comfort ◽  
Production Cost ◽  
Low Cost ◽  
Well Being ◽  
Animal Production ◽  
Productive Potential ◽  
Controlled Environments ◽  
Globe Temperature ◽  
Black Globe Temperature

Technologically advanced animal production requires more controlled environments, aiming to maximize animal performance and, consequently, the profitability of the activity. To do that, it is necessary to instrument, evaluate and diagnose the various rearing environments. Hence, Precision Animal Production is inserted in this context and aims to effectively meet the general needs of the animal, so that it reach its full productive potential, correcting the divergences between the environment and its well-being to guarantee its comfort. Since Brazil is a country with tropical climate, which is a major obstacle, the proposal of this project is to develop a prototype for embedded system of thermal comfort analysis at low cost. Using sensors and the microcontroller Arduino to manage data, this work fulfilled its objective, with a prototype device (WGV-1c) capable of measuring dry bulb temperature, wet bulb temperature, black globe temperature, relative humidity, BGHI and THI with production cost below that proposed by the market.

scholarly journals Welfare of a pair of Captive Tigers: a Hand-Reared Female and a Parent-Reared Male

2015 ◽  
Vol 5 (1) ◽  
pp. 545-556 ◽  
Author(s):  
Mara Bertocchi ◽  
Spiezio Caterina ◽  
Di Ianni Francesco ◽  
Macchi Elisabetta ◽  
Parmigiani Enrico ◽  
...  
Keyword(s):  
Animal Welfare ◽  
Behavioral Problems ◽  
Physiological Stress ◽  
Single Case ◽  
Well Being ◽  
Behavioral Data ◽  
Stress Markers ◽  
Fecal Cortisol ◽  
Cortisol Levels ◽  
Species Specific

Animal welfare assessment has undergone considerable development. The management and rearing of big cats may lead these animals to express behavioral problems. This study was performed to assess the well-being of a non-breeding pair of Siberian tigers using ethological and physiological parameters. During the day, the animals were kept together in the outdoor exhibit, whereas overnight the tigers were individually housed. Twenty 45-min sessions were run for each subject. The Focal Animal Sampling method was used to record individual and social behaviors. In addition, fecal cortisol levels were monitored and determined by enzyme immunoassay. Single case analysis was run to analyze behavioral data and cortisol levels. Findings highlight that species-specific behaviors were performed by both animals. However, significant differences between the two tigers were observed in stress-related behaviors: the female showed stereotypic behavior, whereas the male did not. No significant differences in fecal cortisol levels were observed. Results suggest that the ethological parameters could be more sensitive than the physiological ones in detecting a stressful condition. Analyzing behavioral data together with physiological stress markers may allow for a more complete assessment of animal welfare.

A DIGITAL METHOD FOR MEASURING THE THERMAL COMFORT OF THE AIR

2002 ◽  
Vol 14 (04) ◽  
pp. 175-181
Author(s):  
TANG-JEN LIU ◽  
MING-SHING YOUNG
Keyword(s):  
Thermal Comfort ◽  
Indoor Air ◽  
Indoor Environment ◽  
Comfort Level ◽  
Digital Method ◽  
Outdoor Air ◽  
Air Movement ◽  
Mathematical Expressions ◽  
Temperature And Humidity ◽  
The Mathematical Model

Opening windows is frequently done to refresh the indoor air for the occupants. To maintain the cleanliness and freshness of the indoor air, more outdoor air is needed. But its high temperature and humidity are harmful to the thermal comfort of the indoor environment. Therefore, determining the amount of outdoor air allowed to enter the room is very important for the optimum conditioning of the indoor air. The ASHRAE comfort charts indicate the percentage of subjects feeling comfortable during various combinations of dry-bulb temperature, humidity, and air movement. A set of mathematical expressions were proposed to model the charts in order to calculate the comfort degree of the outdoor air automatically with its temperature and humidity. In this paper, the measurement of temperature and humidity was completed by a self-developed digital method. Besides, the comfort level of the sampled air was also simultaneously determined by this digital method based on the mathematical model of comfort charts. The system implemented based on our method is portable. This will let us make good use of the outdoor air and controll the ventilation machine more effectively.

scholarly journals Studi lapangan variabel iklim rumah vernakular pantai dan gunung dalam menciptakan kenyamanan termal adaptif

2018 ◽  
Vol 1 (2) ◽  
pp. 96
Author(s):  
Hermawan Hermawan
Keyword(s):  
Thermal Comfort ◽  
Air Temperature ◽  
Rainy Season ◽  
Thermal Sensation ◽  
Dry Season ◽  
Air Humidity ◽  
Mountain Areas ◽  
Adaptive Thermal Comfort ◽  
Temperature And Humidity ◽  
Microclimate Variables

Microclimate variables are one of the variables that affect adaptive thermal comfort. The microclimate variables are air temperature, solar radiation temperature, air humidity and wind speed. In this study the discussion of microclimate variables is specific to air temperature and air humidity. This is based on other studies which mention that the most influential climate variables are air temperature and humidity. This research is a field study that will compare air temperature and humidity in coastal and mountain areas. Measurements are carried out in 3 seasons, namely the dry season to rain, the rainy season and the rainy season to the dry season. Measurement of air and humidity temperature variables in two rooms in the building and outside space and terrace. The results of the study show that there are significant differences between coastal and mountain dwellings. This difference is related to adaptive thermal comfort through thermal sensation. Thermal sensation results show that the location of the mountain is that most residents feel cool, while at the beach location, the residents are mostly comfortable or neutral.

scholarly journals Welfare assessment of cattle submitted to equestrian sporting events

2021 ◽  
Vol 10 (8) ◽  
pp. e34510817476
Author(s):  
Gustavo Rodrigues Queiroz ◽  
Alexandre Mendes Amude ◽  
Aline Tramontini Zanluchi de Queiroz ◽  
Sabrina Ribeiro ◽  
Francisco Thiago Vieira Oliveira ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Animal Welfare ◽  
Sporting Events ◽  
Horse Breed ◽  
Welfare Assessment ◽  
Quarter Horse ◽  
Comfort Food ◽  
Behavioral Aspects

The concern with the animal’s welfare has become increasingly frequent and the use of cattle in sporting events has aroused discussions about the preservation and integrity of these animals. The objective of this work was to evaluate whether the cattle participating in the team roping modality receive all support regarding the animal welfare criteria. During the 41st National Championship of the Quarter Horse Breed of Work and Conformation, aspects of animal welfare of 410 cattle that participated in the team roping were evaluated. Behavioral aspects were observed before, during and after the end of the competition, in addition to quantifying the number of runs per animal, the presence of ectoparasites, thermal comfort, food and hydration. It was possible to conclude that the environment in which the tests were carried out, the feeding conditions, the space and the thermal comfort meet the criteria of animal welfare.

scholarly journals Konsep Smart Building Pada Kenyamanan Termal di Laboratorium Teknik

2020 ◽  
Vol 13 (1) ◽  
pp. 18-24
Author(s):  
Anastasia Febiyani
Keyword(s):  
Heat Stress ◽  
Thermal Comfort ◽  
Stress Index ◽  
Temperature Index ◽  
Predicted Mean Vote ◽  
Smart Building ◽  
Room Condition ◽  
Temperature And Humidity ◽  
Heat Stress Index

Engineering Laboratory is a place where students can learn the theory and then practicing of machines operate. Teaching room should be made as comfortabel as possible so can improve students. Room condition whereas there are practicum machines makes the room hotter.. Inadequate room capacity makes students uncomfortabel with the conditions of the practicum. The focus in this study is to examine the thermal comfort obtained by students, measurements of temperature and humidity. The method used to calculate the temperature index by calculating the Predicted Mean Vote Index (PMV), Predicted Dissatisfied (PPD), and Heat Stress Index (HSI). Result for This calculation is then used as a reference in the improvement analysis. The results obtained from the PMV calculation are 2.11 PPD 81.67%. This calculation used as a reference in the improvement analysis.

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