Estimating Black Globe Temperature Based on Meteorological Data

2008 ◽  
Author(s):  
S. H. N Turco ◽  
T. G. F da Silva ◽  
G M de Oliveira ◽  
M. M. V. B. R Leitão ◽  
M. S. B de Moura ◽  
...  
Keyword(s):  
Meteorological Data ◽  
Globe Temperature ◽  
Black Globe Temperature

Black globe temperature from meteorological data and a bioclimatic analysis of the Brazilian Northeast for Saanen goats

2019 ◽  
Vol 85 ◽  
pp. 102408 ◽  
Author(s):  
Thieres George Freire da Silva ◽  
Girlene Cordeiro Lima Santos ◽  
Ana Maria Cabral Duarte ◽  
Sílvia Helena Nogueira Turco ◽  
José Francisco da Cruz Neto ◽  
...  
Keyword(s):  
Meteorological Data ◽  
Globe Temperature ◽  
Brazilian Northeast ◽  
Black Globe Temperature

scholarly journals CONFORTO TÉRMICO E DESEMPENHO DE POEDEIRAS NA FASE INICIAL

2020 ◽  
Vol 35 (3) ◽  
pp. 388-394
Author(s):  
Fabiana Terezinha Leal de Morais ◽  
José Pinheiro Lopes Neto ◽  
Adriana Maria dos Santos ◽  
Patrício Gomes Leite ◽  
Raissa Gonçalves Cavalcanti
Keyword(s):  
Weight Gain ◽  
Thermal Comfort ◽  
Initial Phase ◽  
Thermal Conditions ◽  
The Third ◽  
Humidity Index ◽  
Globe Temperature ◽  
Black Globe Temperature ◽  
Poultry Farming

CONFORTO TÉRMICO E DESEMPENHO DE POEDEIRAS NA FASE INICIAL   FABIANA TEREZINHA LEAL DE MORAIS1, JOSÉ PINHEIRO LOPES NETO2, ADRIANA MARIA DOS SANTOS3, PATRÍCIO GOMES LEITE4, RAISSA GONÇALVES CAVALCANTI5   1Doutoranda em Engenharia Agrícola: Lacra, UFCG, Avenida Assis Chateaubriand, 101, Liberdade,58414-060, Campina Grande, Paraíba, Brasil. [email protected]. 2 Doutor em Engenharia Agrícola: Lacra, UFCG, R. Aprígio Veloso, 882 - Universitário, 58428-830, Campina Grande, Paraíba, [email protected]. 3 Mestra em Engenharia Agrícola: Lacra, UFCG, R. Alencar Pires de almeida, 07 – Centro, 58748-000, Água Branca, Paraíba, [email protected]. 4 Doutor em Engenharia Agrícola: Lacra, UFCG, R. Aprígio Veloso, 882 - Universitário, 58428-830, Campina Grande, Paraíba, [email protected] 5 Mestra em Engenharia Agrícola: Lacra, UFCG, R. Aprígio Veloso, 882 - Universitário, 58428-830, Campina Grande, Paraíba, [email protected].   RESUMO: Tendo em vista a importância do conforto térmico na avicultura de postura no Brasil, o objetivo geral destapesquisa foi avaliar o conforto térmico no galpão (pinteiro), localizado em uma granja comercial no município de Cuité (PB). A avaliação foi realizada com base nos dados de Índice da Temperatura do Globo Negro e Umidade (ITGU), avaliando o desempenho das pintainhas relacionado ao ganho de peso e as coletas de dados foram realizadas diariamente.Foi utilizado um galpão destinado para a fase de cria para aves da linhagem Lohmann LSL no período da terceira semana para desenvolvimento das aves, avaliando os valores de ITGU e comparando àqueles indicados pela literatura. Como resultados, observamos que foi possível manter as faixas de conforto térmicas bem próximas ao recomendado, e o ganho de peso mantiveram-se abaixo do indicado pelo manual da linhagem, os animais submetidos a condições térmicas adversas apresentaram menor ganho de peso.   Palavras-chave: ambiência, conforto térmico, ganho de peso.   THERMAL COMFORT AND POISER PERFORMANCE IN THE INITIAL PHASE (CRIA)   ABSTRACT: Considering the importance of thermal comfort in poultry farming in Brazil. The aim of this research was to evaluate the thermal comfort in the shed (pestle), located in a commercial farm in the municipality of Cuité - PB. The evaluation was performed based on the data of air temperature (ºC), relative humidity of the air (%), the black globe temperature for determination of the Black Globe Temperature and Humidity Index (ITGU). Weight gain on chicks and data collection were performed daily. The shed for the breeding phase of the Lohmann LSL line was used in the third week for bird development, evaluating the ITGU values and comparing to those indicated in the literature, we observed that it was possible to keep the thermal comfort bands very close to the recommended one, and the weight gain remained distant to that indicated by the lineage manual, the animals submitted to adverse thermal conditions showed less weight gain.   Keywords: ambience, thermal comfort, weight gain.

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 and spatial distribution of noise levels in swine nursery

2019 ◽  
Vol 23 (3) ◽  
pp. 196-202
Author(s):  
Flavio A. Damasceno ◽  
Carlos E. A. Oliveira ◽  
Gabriel A. e S. Ferraz ◽  
João A. C. do Nascimento ◽  
Jairo A. O. Saraz ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Air Conditioning ◽  
Heating System ◽  
Climatic Conditions ◽  
Noise Levels ◽  
Air Conditioning System ◽  
Humidity Index ◽  
The Mean ◽  
Globe Temperature ◽  
Black Globe Temperature

ABSTRACT The aim of this study was to evaluate the welfare and spatial distribution of noise levels in a swine nursery during the first three weeks of animal’s life. The climatic conditions were evaluated through the dry-bulb temperature (Tdb), relative humidity (RH) and black globe temperature and humidity index (BGHI) and allowed us to observe that the heating system influenced the conditions in the environment, and the use of the air conditioning system did not guarantee animal’s comfort conditions. The analysis on the spatial distribution of noise levels was performed using geostatistics and demonstrated the occurrence of spatial variability inside the facilities. The highest frequencies of noise levels were concentrated between 60 and 70 dB, and the highest noise values were observed near the fans. The mean BGHI values were below the thermal comfort range for piglets in all systems tested.

scholarly journals Microclimate in silvipastoral systems with eucalyptus in rank with different heights

2010 ◽  
Vol 39 (3) ◽  
pp. 685-694 ◽  
Author(s):  
Wander de Souza ◽  
Orlando Rus Barbosa ◽  
Jair de Araújo Marques ◽  
Marco Aurélio Teixeira Costa ◽  
Eliane Gasparino ◽  
...  
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Air Temperature ◽  
Thermal Load ◽  
Heat Load ◽  
Temperature Humidity Index ◽  
Heat Load Index ◽  
Humidity Index ◽  
Globe Temperature ◽  
Black Globe Temperature

The aim of this work was to verify if the presence of trees and its height in formed silvipastoral systems with eucalyptus planted in rank can modify the microclimate and improve the environment for bovine raising during the day in summer. It was evaluated the microclimate of the environment in formed silvipastoral systems in rank of eucalyptus with 8 m, 18 m and 28 meters of height, compared to a system no shade in the summer. The experimental design was a split plot with six hour time in sub parcels. The systems are made up of parcels and the months as block in four replications and the interaction hour × system. The air temperature, black globe temperature, relative humidity and wind speed were observed to create the following indexes for thermal comfort: temperature-humidity index; black globe-humidity index; heat load index and the radiant thermal load. Excepted for the relative humidity, there was interaction for time × system for all variables and indexes. Interaction occurred for: air temperature at 10 a.m. and 6 p.m.; wind speed from 8 a.m. to 4 p.m.; temperature humidity index at 10 a.m. and 12 p.m.; black globe temperature, black globe humidity index, heat load index, and radiant thermal load at all the hours. During the summer, the system with shade of 28 m trees had the lowest average of black globe temperature; wind speed; black globe humidity index; radiant thermal load index; and heat load index. There was a reduction of wind speed average in systems 8 m, 18 m and 28 m trees in, respectively, 20.7; 50.0 and 48.0% in relation to no shade system; however it was not proportional to the height, with influence of the rank porosity and pantries height. Nevertheless, for radiant thermal load index the reduction was proportional to the height of the trees with 10.24; 12.49 and 20.76%, respectively, for 8 m, 18 m and 28 meters of height. There was a reduction of the thermal stress in the environment due to the presence of trees, being the heat load index thermal the index that better demonstrated the effect, despite of not being proportional to the rank height.

Effect of heat load and dietary protein on oxygen pulse and energy cost for locomotion in heifers

2019 ◽  
Vol 59 (9) ◽  
pp. 1611
Author(s):  
E. E. L. Valente ◽  
V. T. Filipini ◽  
L. C. Araújo ◽  
M. Stahlhofer ◽  
B. V. R. Melo ◽  
...  
Keyword(s):  
Heart Rate ◽  
Energy Expenditure ◽  
Dietary Protein ◽  
Energy Cost ◽  
Heat Load ◽  
Protein Concentration ◽  
Oxygen Pulse ◽  
Humidity Index ◽  
Globe Temperature ◽  
Black Globe Temperature

The objectives of the present study were to evaluate the effect of heat load, bodyweight and dietary protein on oxygen pulse of heifers, to obtain the energy cost of walking on flat and sloping terrain, and to compare the energy cost of heifers during continuous walking and intermittent walking. In Experiment 1, the correlations of oxygen consumption, heart rate and oxygen pulse (O2P) with bodyweight, black globe temperature and temperature and humidity index were examined. Moreover, the effect of dietary protein on O2P was evaluated. The temperature and humidity index and black globe temperature had a low positive correlation with O2P and oxygen consumption, and a low negative correlation with heart rate. However, weight had no correlation with O2P. There was a linear increase in O2P with a very low adjustment with an increasing dietary crude protein concentration. In Experiment 2, the energy cost of heifers walking continuously at a constant speed in a terrain with 0%, 6% and 12% gradient was measured. The energy expenditure was similar among the terrain gradients. The heifers walking had a 16.6% higher energy expenditure than when they were standing. In Experiment 3, a comparison of the energy cost was made among heifers standing, continuously walking and intermittently walking at a constant speed on flat ground. The energy cost for walking was similar between continuous and intermittent walking. The heat load, bodyweight and dietary protein concentration had a low effect on O2P in dairy heifers. Therefore, measurements over a short time (5–15 min) are a reliable estimator of O2P through the day. Both intermittent and continuous walking can be used to evaluate energy expenditure.

scholarly journals Epidemiology and risk factors for heat illness: 11 years of Heat Stress Monitoring Programme data from the FIVB Beach Volleyball World Tour

2020 ◽  
pp. bjsports-2020-103048
Author(s):  
Sebastien Racinais ◽  
Marine Alhammoud ◽  
Nada Nasir ◽  
Roald Bahr
Keyword(s):  
Heat Stress ◽  
Relative Humidity ◽  
Absolute Risk ◽  
Principal Component ◽  
Absolute Humidity ◽  
Current Data ◽  
Stress Monitoring ◽  
The Absolute ◽  
Globe Temperature ◽  
Black Globe Temperature

ObjectivesTo analyse 11 years of FIVB heat stress-monitoring data to determine the relative influence of the different environmental parameters in increasing the likelihood of a heat-related medical time-out (MTOheat).MethodsA total of 8530 matches were recorded. The referee measured air temperature, black globe temperature, relative humidity and wet-bulb globe temperature (WBGT) before the matches, and registered the MTOheat. The absolute humidity was computed at posteriori.ResultsThere were 20 MTOheat cases, but only 3 resulted in forfeiting the match. MTOheat incidence was not statistically impacted by sex (p=0.59). MTOheat cases were more prevalent during the games played in Asia during the 4th quarter of the year (p<0.001). Two cases of MTOheat experienced diarrhoea or gastroenteritis during the 5 preceding days; both of them forfeited the match. A principal component analysis showed a specific environmental profile for the matches with MTOheat. They occurred at higher WBGT, temperatures and absolute humidity (p<0.001), but with a lower relative humidity (p=0.027).ConclusionsThe current data showed that an increase in ambient or black globe temperature, but not relative humidity, increased the risk of a MTOheat; but that the absolute risk remained low in elite beach volleyball players. However, suffering or recovering from a recent illness may represent a risk factor for a MTOheat to lead to player forfeit.

scholarly journals Evaluating a New Shade for Feedlot Cattle Performance and Heat Stress

2017 ◽  
Vol 60 (4) ◽  
pp. 1301-1311 ◽  
Author(s):  
Morgan D. Hayes ◽  
Tami M. Brown-Brandl ◽  
Roger A. Eigenberg ◽  
Larry A. Kuehn ◽  
R. Mark Thallman
Keyword(s):  
Heat Stress ◽  
Feed Intake ◽  
Environmental Conditions ◽  
Average Daily Gain ◽  
Ground Temperature ◽  
Globe Temperature ◽  
The Impact ◽  
Daily Gain ◽  
Black Globe Temperature ◽  
Cattle Performance

Abstract. Heat stress in cattle results in decreased feed intake, lower daily gain, and potentially death in susceptible animals under intense conditions. A study was carried out during the summer of 2013 at the USDA-ARS U.S. Meat Animal Research Center feedlot evaluating the impact of shade on environmental conditions and cattle performance. A novel two-tiered shade was used in half of the 14 pens, each holding 30 animals. The shades were designed to reduce solar heat load by 40% to 60% and to provide traveling shade across the pen, providing varied amounts of shade area as well as varied solar reduction potential. The objective of this study was to determine if the shade was effective at improving performance (evaluated as average daily gain, feed intake, and feed to gain ratio) and reducing environmental conditions that cause heat stress. A group of mixed-breed cattle with varied genetics including both and were selected, penned on the basis of sex, and blocked by color. Production parameters of pen feed usage were measured daily, and individual body weights were taken monthly. Environmental conditions including air temperature, relative humidity, wind speed, ground temperature, and black globe temperature with and without shade were measured. Solar load on the pens was reduced when shade was provided, with both ground temperature and black globe temperature showing reductions. Cattle showed nominally better performance; however, no significant differences were found in gain or feed intake. Panting scores were significantly lower with shade provided; slopes of cattle respiration rate versus ambient temperature were significantly lower with shade during the afternoon period. Keywords: Cattle, Feedlot, Heat stress, Respiration, Shade.

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