Data/hora: 23/09/2024 13:37:51

Biblioteca(s): 	Embrapa Agrossilvipastoril.	
Data corrente: 	30/12/2016	
Data da última atualização: 	07/02/2018	
Autoria: 	MELLO, A. C. T. de; MONTEI, R. A. C.; SHIRATSUCHI, L. S.; PEDREIRA, B. C. e; LOPES, L. B.; XAVIER, D. B.	
Afiliação: 	ANDRÉIA CRISTINA TAVARES DE MELLO, UFMT-SINOP; ROBERTA APARECIDA CARNEVALLI MONTEI, CPAMT; LUCIANO SHOZO SHIRATSUCHI, CPAMT; BRUNO CARNEIRO E PEDREIRA, CPAMT; LUCIANO BASTOS LOPES, CPAMT; DIEGO BATISTA XAVIER, CPAMT.	
Título: 	Improved grazing activity of dairy heifers in shaded tropical grasslands.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Ciência Rural, Santa Maria, v. 47, n. 02, p. 1-7, 2017	
Idioma: 	Inglês	
Conteúdo: 	Trees in the production systems can effectively reduce hot weather-induced stress in the Brazilian Midwest. High temperatures cause changes in animals daily routine, and trees into pastures can promote benefits. The aim of this research was to evaluate the behavior of dairy heifers in silvopastoral systems in the state of Mato Grosso, Brazil. A herd of 24 crossbreed heifers (3/4 and 7/8 Holstein/Zebu), 350kg average weight, was evaluated over three seasons. Piatã grass was managed under three shade levels: full-sun, moderate-shade, and intensive-shade provided by 10 to 12m high Eucalyptus trees. Behavior data were collected every 15 minutes from 8:30h to 16h. Shade availability significantly impacted heifer behavior, mainly affecting grazing frequency and time during the hottest hours. Grazing behavior was affected by shade levels during the different seasons. Heifers showed preferred grazing times. Heifers in the intensive-shade system visited shady areas during the hottest hours throughout the seasons. Heifers in the full sun-system avoided grazing during the warmer times, ceasing feeding activities. Our results from the Brazilian Midwest showed that shade availability causes breed heifers to change their daily routine.	
Palavras-Chave: 	Silvopastoral system.	
Thesaurus Nal: 	Animal behavior; Urochloa brizantha.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/152602/1/2016-cpamt-carnevalli-grazing-heifers-shaded-tropical-grasslands.pdf	
Registro original: 	Embrapa Agrossilvipastoril (CPAMT)	
Exemplares: 	CPAMT - (595-1) - UPC - AP - DD -  -  -  - DIS