Detalhes bibliográficos
| Resumo: | In cantle breeding industry, where artificial insemination techniques are employed, the successful detection of estrus onser leads to considerable cost-saving in herd management. one of the most reliable approaches in based on the determination of progesterone concentration in milk. However, these methods rely on the biosensor concept where a biological substrate in used in a chemical-binding reaction to directly or indirectly producem some effect(electrical or light) that is used at the transducer level. These methods present several drawbacks concerning real-time measurements due to the complexity of the reactions involved and reagent/waste handling. Another approach is to combine measurements of temperature and electrical resistance os reproductive tissues to predict estrus. Using a low-power microsystem with wireless capabilities it is possible to take these measurements in situ an more frequently . The proposed mocrosystem comprises a second-order delta-sigma modulator for analog-to-digital conversion and a class-E radio frequently. Since estrus prediction in based on relative changes of the two correlated parameters, calibration is not necessary. Some preliminary results regarding the measuring concept are presented. |
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| Autores principais: | Valentim, Ramiro |
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| Outros Autores: | Silva, Amélia M.; Reis, Manuel J. C. S.; Valente, António; Morais, Raul; Soares, Salviano Pinto; Almeida, José |
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| Assunto: | Microsystem Electrical resistivity sensor Wireless interface Estrus prediction |
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| Ano: | 2006 |
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| País: | Portugal |
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| Tipo de documento: | artigo |
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| Tipo de acesso: | acesso aberto |
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| Instituição associada: | Universidade de Trás-os-Montes e Alto Douro |
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| Idioma: | inglês |
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| Origem: | Repositório da UTAD |
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