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| 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 |
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| 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 |
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| 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 |
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| 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 |
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