Data/hora: 04/06/2024 05:40:27

Biblioteca(s): 	Embrapa Agricultura Digital.	
Data corrente: 	17/12/2008	
Data da última atualização: 	11/04/2017	
Autoria: 	VALE, M. M.; MOURA, D. J. de; NÄÄS, I. de A.; OLIVEIRA, S. R. de M.; RODRIGUES, L. H. A.	
Afiliação: 	MARCOS MARTINEZ VALE, FEAGRI/UNICAMP; DANIELLA JORGE DE MOURA, FEAGRI/UNICAMP; IRENILZA DE ALENCAR NÄÄS, FEAGRI/UNICAMP; STANLEY ROBSON DE MEDEIROS OLIVEIRA, CNPTIA; LUIZ HENRIQUE ANTUNES RODRIGUES, FEAGRI/UNICAMP.	
Título: 	Data mining to estimate broiler mortality when exposed to heat wave.	
Ano de publicação: 	2008	
Fonte/Imprenta: 	Scientia Agricola, Piracicaba, v. 65, n. 3, p. 223-229, May/June 2008.	
DOI: 	http://dx.doi.org/10.1590/S0103-90162008000300001	
Idioma: 	Inglês	
Conteúdo: 	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 models for estimating specifically high mortality during broiler production. Two models yielded a classification accuracy of 89.3% by using Principal Component Analysis (PCA) and Wrapper feature selection approaches. Both models obtained a class precision of 0.83 for classifying high mortality. When the feature selection was made by the domain experts, the model accuracy reached 85.7%, while the class precision of high mortality was 0.76. Meteorological data and the calculated THI from meteorological stations were helpful to select the range of harmful environmental conditions for broilers 29 and 42 days old. The data mining techniques were useful for building animal production models.	
Palavras-Chave: 	Agropecuária; Dados ambientais; Data mining; ITU; Mineração de dados.	
Thesagro: 	Frango de Corte.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/158853/1/AP-datamining-Valeetal-2008.pdf	
Registro original: 	Embrapa Agricultura Digital (CNPTIA)	
Exemplares: 	CNPTIA - (12453-1) - UPC - AP - PP -  -  - 2008.00211 - DES
CNPTIA - (12453-2) - UPC - AP - DD -  -  -  - DIS