Consulta: creatorFacets:"Moura,Daniella Jorge de"
Registros recuperados: 16
Data/hora: 10/06/2024 16:52:52

Qualidade da cama e do ar em diferentes condições de alojamento de frangos de corte
Provedor de dados: 86
Autores: Carvalho,Thayla Morandi Ridolfi de; Moura,Daniella Jorge de; Souza,Zigomar Menezes de; Souza,Gustavo Soares de; Bueno,Leda Gobbo de Freitas.
O objetivo deste trabalho foi avaliar as condições iniciais de alojamento de aves, de um dia de idade, em termos da qualidade da cama de frango reutilizada e do ar, em aviários comerciais de produção com diferentes sistemas de ventilação mínima e tipologia, por meio de análise geoestatística. O experimento foi realizado em quatro aviários: Blue House I (T1) e Blue House II (T2), Dark House (T3) e Convencional (T4). As variáveis analisadas foram: pH, umidade, temperatura superficial e concentração de amônia, tendo-se coletado as amostras na altura dos frangos, em 80 pontos equidistantes no interior do pinteiro. A análise geoestatística auxiliou a identificação de pontos críticos no controle dos ambientes estudados. O manejo da ventilação mínima não é...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cama reutilizada; Casca de arroz e café; Conforto animal; Geoestatística; Maravalha; Sistema de ventilação mínima.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400003

Strategies and facilities in order to improve animal welfare
Provedor de dados: 96
Autores: Moura,Daniella Jorge de; Bueno,Leda Globbo de Freitas; Lima,Karla Andrea Oliveira de; Carvalho,Thayla Morandi Ridolfi de; Maia,Ana Paula de Assis Maia.
To keep the position in being a world-wide exporter of chicken meat, Brazil must meet international quality standards, always seeking alternative resources of improvement, without increasing production costs, including litter quality, requirements of animal welfare and environment affairs, such as the use and reuse of broiler litter. Researches are performed in the areas of animal welfare, environment, animal behavior and use of modern climatization technology improving the quality of the environment created to raise broilers, also trying to reduce the greenhouse gas emissions and global warming in the environment, becoming a sustainable production system. This paper has a bibliographic revision of the subject mentioned above, intending to show a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Broiler litter; Electrical energy; Environment; Gas; Welfare.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300034

Use of geostatistics on broiler production for evaluation of different minimum ventilation systems during brooding phase
Provedor de dados: 96
Autores: Carvalho,Thayla Morandi Ridolfi de; Moura,Daniella Jorge de; Souza,Zigomar Menezes de; Souza,Gustavo Soares de; Bueno,Leda Gobbo de Freitas; Lima,Karla Andrea Oliveira de.
The objective of this research was to evaluate different minimum ventilation systems, in relation to air quality and thermal comfort using geostatistics in brooding phase. The minimum ventilation systems were: Blue House I: exhaust fans + curtain management (end of the building); Blue House II: exhaust fans + side curtain management; and Dark House: exhaust fans + flag. The climate variables evaluated were: dry bulb temperature, relative humidity, air velocity, carbon dioxide and ammonia concentration, during winter time, at 9 a.m., in 80 equidistant points in brooding area. Data were evaluated by geostatistic technique. The results indicate that Wider broiler houses (above 15.0 m width) present the greatest ammonia and humidity concentration. Blue House...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air quality; Environment; Kriging; Poultry; Welfare.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100028

Efeitos da climatização do curral de espera na produção de leite de vacas holandesas
Provedor de dados: 96
Autores: Silva,Iran J.O. da; Pandorfi,Héliton; Acararo Jr.,Irineu; Piedade,Sônia M.S.; Moura,Daniella Jorge de.
O presente estudo foi conduzido com o objetivo de avaliar os efeitos da climatização de ambientes em condições de pré-ordenha na produção de leite. O experimento foi realizado na fazenda experimental do Instituto de Zootecnia, em Nova Odessa, SP, durante doze dias consecutivos do verão de 1999. Foram analisados os efeitos do sistema de resfriamento evaporativo (SRE), por nebulização, no curral de espera. Utilizaram-se doze animais da raça holandesa, divididos em dois grupos de seis animais, onde apenas o segundo grupo foi submetido ao sistema de climatização. Os dados ambientais foram registrados no horário das ordenhas, ou seja, às 7 e 15 h. Para avaliação dos dados ambientais utilizaram-se os índices de conforto térmico: índice de temperatura de globo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conforto térmico; Leite; Resfriamento evaporativo.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982002000800019

Temperatura corporal de frangos de corte em diferentes sistemas de climatização
Provedor de dados: 96
Autores: Welker,Janaína Schenatto; Rosa,Alexandre Pires; Moura,Daniella Jorge de; Machado,Lizandra Padoin; Catelan,Fernanda; Uttpatel,Rodrigo.
Verificou-se o efeito dos sistemas de climatização de aviários sobre a temperatura média corporal de frangos de corte (TMC). Utilizaram-se 610 fêmeas da linhagem Cobb distribuídas em delineamento de blocos ao acaso repetidos no tempo, considerando o dia como critério de bloqueamento, em esquema fatorial 2 × 5, composto de duas orientações solares (Norte-Sul, NS, e Leste-Oeste, LO) e cinco sistemas de climatização (ventilador e nebulização, VN; ventilador com nebulização e sombreamento, VNS; apenas ventilador, V; apenas sombreamento, S; e apenas nebulização, N), de modo que cada tratamento teve sete repetições (dias de coleta). Foram coletados dados meteorológicos para o cálculo de carga térmica de radiação (CTR) e monitoradas as temperaturas de superfície...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ambiência; Conforto térmico; Frangos de corte; Temperatura.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008000800018

Physiological and productive responses of environmental control on housed sows
Provedor de dados: 63
Autores: Romanini,Carlos Eduardo Bites; Tolon,Yamilia Barrios; Nääs,Irenilza de Alencar; Moura,Daniella Jorge de.
Swine housing must promote an adjusted environment for thermal comfort and high animal productivity without negatively affecting the sow performance and reproductive response. This study evaluated the use of distinct environmental cooling equipments on sow performance, both on the gestation and on nursing in open sided housing. Two treatments were tested in the gestation building: natural ventilation and mechanical ventilation associated to fogging; while in the nursing rooms three treatments were tested: natural ventilation; mechanical ventilation; and evaporative cooling with forced ventilation. Sows were randomly chosen from the same genetic lot form six combined treatments. The evaporative cooling system in the farrowing room differed for piglet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gestating sows; Lactating sows; Thermal stress.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400002

A decision-tree-based model for evaluating the thermal comfort of horses
Provedor de dados: 63
Autores: 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

Broiler and swine production: animal welfare legislation scenario
Provedor de dados: 63
Autores: Silva,Raquel Baracat Tosi Rodrigues da; Nääs,Irenilza de Alencar; Moura,Daniella Jorge de.
Brazil is the world largest meat exporter and one of the most recent demands of the import market is directed towards animal welfare. Codes, norms and legislations used in Brazil are out of date, and in most cases those adopted for both poultry and swine production are based on international standards to meet trade requirements. This research aimed to study and describe an overall scenario of the standards, norms and legislations for animal welfare items applied to broiler and swine production: rearing, handling and transportation. The critical points of these items were identified in accordance to standards and current literature on animal welfare issues, effective on January 2008. The comparison was based on given scores varying from 1-5 (very bad to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal production; Rearing; Transportation; Environment; Norms.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600001

Data mining to estimate broiler mortality when exposed to heat wave
Provedor de dados: 63
Autores: Vale,Marcos Martinez; Moura,Daniella Jorge de; Nääs,Irenilza de Alencar; Oliveira,Stanley Robson de Medeiros; Rodrigues,Luiz Henrique Antunes.
Heat waves usually result in losses of animal production since they are exposed to thermal stress inducing an increase in mortality and consequent economical losses. Animal science and meteorological databases from the last years contain enough data in the poultry production business to allow the modeling of mortality losses due to heat wave incidence. This research analyzes a database of broiler production associated to climatic data, using data mining techniques such as attribute selection and data classification (decision tree) to model the impact of heat wave incidence on broiler mortality. The temperature and humidity index (THI) was used for screening environmental data. The data mining techniques allowed the development of three comprehensible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: THI; Broiler production; Environmental data.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300001

Improving detection of dairy cow estrus using fuzzy logic
Provedor de dados: 63
Autores: Brunassi,Leandro dos Anjos; Moura,Daniella Jorge de; Nääs,Irenilza de Alencar; Vale,Marcos Martinez do; Souza,Silvia Regina Lucas de; Lima,Karla Andrea Oliveira de; Carvalho,Thayla Morandi Ridolfi de; Bueno,Leda Gobbo de Freitas.
Production losses due to lack of precision in detecting estrus in dairy cows are well known and reported in milk production countries. Nowadays automatic estrus detection has become possible as a result of technical progress in continuously monitoring dairy cows using fuzzy pertinence functions. Dairy cow estrus is usually visually detected; however, solely use of visual detection is considered inefficient. Many studies have been carried out to develop an effective model to interpret the occurrence of estrus and detect estrus; however, most models present too many false-positive alerts and because of this they are sometimes considered unreliable. The objective of this research was to construct a system based on fuzzy inference functions evaluated with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrus cycle; Artificial intelligence; Expert system.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500002

Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system
Provedor de dados: 63
Autores: Sousa Junior,Vilmar Rodrigues de; Sabino,Luana Araújo; Moura,Daniella Jorge de; Nunhez,José Roberto; Sonoda,Lilia Thays; Silva,Alexandre Oliveira; Prada,Ronald Jaimes; Fontoura,Diener Volpin Ribeiro; Seber,Rogério Torres.
ABSTRACT: Ventilation systems used in swine facilities deserve to be studied because they directly affect productivity in the pig farming sector. Bearing this in mind the uniformity of air distribution and temperature is essential to animal welfare in this breeding environment. Thus, the purpose of this study was to identify whether changes in air entrances and exhaust fan positioning could influence air velocity and temperature distribution. The experimental data were collected in a commercial full-scale sow facility. Validation was carried out by comparing the simulated air temperatures and data measured in the field. These results showed agreement between data with a maximum relative error of approximately 3 %. The real settings showed a gradual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CFD; Airflow pattern; Temperature distribution.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000300173

Positioning of sensors for control of ventilation systems in broiler houses: a case study
Provedor de dados: 63
Autores: Curi,Thayla Morandi Ridolfi de Carvalho; Conti,Dante; Vercellino,Rimena do Amaral; Massari,Juliana Maria; Moura,Daniella Jorge de; Souza,Zigomar Menezes de; Montanari,Rafael.
ABSTRACT Ventilation systems are incorporated at intensive poultry farms to control environment conditions and thermal comfort of broilers. The ventilation system operates based on environmental data, particularly measured by sensors of temperature and relative humidity. Sensors are placed at different positions of the facility. Quality, number and positioning of the sensors are critical factors to achieve an efficient performance of the system. For this reason, a strategic positioning of the sensors associated to controllers could support the maintenance and management of the microclimate inside the facility. This research aims to identify the three most representative points for the positioning of sensors in order to support the ventilation system during...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler farms; Environmental control; Geostatistics; Ordinary kriging; Welfare.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000200101

Noise analysis to evaluate chick thermal comfort
Provedor de dados: 63
Autores: Moura,Daniella Jorge de; Nääs,Irenilza de Alencar; Alves,Elaine Cangussu de Souza; Carvalho,Thayla Morandi Ridolfi de; Vale,Marcos Martinez do; Lima,Karla Andrea Oliveira de.
The relationship between thermal environment and chick performance has widely been evaluated, however the consideration that the assessment of the comfort may be estimated by interpreting both amplitude and frequency of bird vocalization under tropical housing conditions is a new concept. This research had as objective of estimating thermal comfort for chicks during the heating phase using this new concept. An experiment was carried out inside a climate controlled chamber (A) for establishing the behavioral pattern related to environmental temperature limits. Forty five chicks were reared inside a 2.3 m² box. A video camera was placed 2.0 m above the birds and the images were captured and registered in a computer. From the pattern determined in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Analysis of signals; Thermal environment; Behavior.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400018

Impact of global warming on beef cattle production cost in Brazil
Provedor de dados: 63
Autores: Nääs,Irenilza de Alencar; Romanini,Carlos Eduardo Bites; Salgado,Douglas D'Alessandro; Lima,Karla Andrea Oliveira; Vale,Marcos Martinez do; Labigalini,Marcelo Ricardo; Souza,Silvia Regina Lucas de; Menezes,Adriana Gomes; Moura,Daniella Jorge de.
Global warming is affecting agribusiness in its economic aspects. Therefore, the prediction of the evolution of Brazilian beef cattle production cost was made using the IPCC forecast scenario for global warming. The methodology consisted of two steps: (i) the development of a fuzzy model that estimated the grazing land capacity (RP) decrease risk as a function of the changes in the average total rain index, air temperature and increase in extension of the dry season; and (ii) the design of an algorithm for predicting the decrease in production as function of the RPfuzzy model, that results in the impact in beef cattle productivity, and consequent increase in production costs. Historical environmental data from important producing counties in the Cerrado...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dry season; Environmental temperature; Fuzzy simulation; Mathematical modeling.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100001

Estimativa de estro em vacas leiteiras utilizando métodos quantitativos preditivos
Provedor de dados: 65
Autores: Nääs,Irenilza de Alencar; Queiroz,Marcos Paulo Garcia; Moura,Daniella Jorge de; Brunassi,Leandro dos Anjos.
O Brasil é o sexto maior produtor de leite do mundo, sendo que essa produção cresce a uma taxa anual 4% superior aos demais países produtores. Parte desse aumento na produção de leite deve-se ao uso de diversas tecnologias desenvolvidas para o setor, principalmente, aquelas relacionadas à genética e ao manejo do rebanho. A detecção acurada do cio em vacas é um fator limitante na eficiência reprodutiva do rebanho leiteiro, sendo considerada uma das principais deficiências na reprodução bovina. Falha na identificação do estro com eficiência ocasiona perdas para o produtor. Métodos quantitativos preditivos, baseados em dados históricos e conhecimento especialista, permitem, a partir de uma base de dados organizada, a predição de padrões com baixa percentagem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelagem preditiva; Mineração de dados; Lógica Fuzzy.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000800048

Variabilidade espacial do microclima de um galpão utilizado para confinamento de bovinos de leite
Provedor de dados: 65
Autores: Faria,Flaviane Flor de; Moura,Daniella Jorge de; Souza,Zigomar Menezes de; Matarazzo,Soraia Vanessa.
O conhecimento da variabilidade espacial de atributos climáticos e a construção de mapas de krigagem podem auxiliar no manejo adequado de animais confinados em galpões. Portanto, o trabalho teve como objetivos caracterizar a variabilidade espacial do microclima de um galpão do tipo free-stall utilizado para confinamento de bovinos leiteiros empregando a técnica de geoestatística e verificar se as variáveis climáticas encontram-se dentro dos limites de conforto dos animais. Os atributos microclimáticos - temperatura, umidade relativa, velocidade do vento, luminosidade e índice de temperatura e umidade (ITU) - foram amostrados em 152 pontos, em intervalos regulares de 2m, na forma de malha. Por meio dos resultados obtidos, foi possível verificar que o uso da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geoestatística; Mapa de isolinhas; Ambiência animal; Instalações.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000900013