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Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental Environmental comfort of buffalo calves (Bubalus bubalis Linnaeus, 1758) on silvopastoral systems in the Eastern Amazon

Raimundo José Moraes Júnior et al · Instituto Nacional de Pesquisas da Amazônia · 2010

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"Pinta" em população nativa do Estado do Amazonas

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Foi analisado o efeito de dois sistemas silvipastoris nos índices de conforto ambiental e alterações nos parâmetros fisiológicos de bezerros bubalinos criados na Embrapa Amazônia Oriental, Belém-PA (clima Afi), no Período 1 (abril a setembro/2007) e Período 2 (outubro/2007 a março/2008). Foram inseridos onze bezerros no Sistema Silvipastoril 1 (SSP1), que apresentava sombreamento útil nas pastagens de 18 a 21%, e oito no Sistema Silvipastoril 2 (SSP2), sem sombreamento, com lago para banho. Foram mensuradas as variáveis fisiológicas: temperatura retal (TR), frequência respiratória (FR), temperatura da pele (TP), e calculados o Índice de Temperatura e Umidade (ITU) e Índice de Conforto de Benezra (ICB), nos dois períodos experimentais, comparados pelo Teste Tukey (P < 0,05). O ITU apresentou diferença estatística entre horários (P < 0,05) e período do ano (P < 0,05), e oscilou de 73,5 ± 1,3 até 82,2 ± 0,8. A TR apresentou diferença estatística entre horários e períodos do ano (P < 0,05), com amplitude de 38,3 ± 0,26 a 39,3 ± 0,38 °C. A FR apresentou diferença significativa entre horários (P < 0,05), com amplitude de 32,2 ± 9,2 a 56,5 ± 19,0 mov min-1, consideradas acima dos níveis normais, enquanto a TP foi diferente estatisticamente entre períodos e horários (P < 0,05) e variou de 23,6 ± 8,3 a 31,7 ± 5,4 °C. Nos Períodos 1 e 2 e nos dois SSP's, os ICBs estiveram acima do valor ideal, variando de 2,46 ± 0,33 a 3,31 ± 0,62 (SSP1) e 2,42 ± 0,30 a 3,45 ± 0,66 (SSP2).<br>This aim of the study was evaluating effects of two different silvopastoral systems on environmental comfort and changes in physiological parameters of buffalo calves bred in the Eastern Amazon. The experiment was conducted at Embrapa Amazônia Oriental, Belém-PA, (Afi climate type) in two periods of the year: Period 1 (April to Sep/2007) and Period 2 (Oct/2007 to March/2008). Eleven calves were included in the Silvopastoral System 1 (SSP1), with a useful shaded pasture area of 18 to 21%; and eight calves were included in the Silvopastoral System 2 (SSP2), without shading, but with a lake for swimming. Physiological status of animals bred in the two SSP's were measured (rectal temperature-RT; respiratory frequency-RF and skin temperature-ST). The Temperature and Humidity Index (THI) and Benezra´s Animal Comfort Index (ACI) were calculated, in two phases of the year, and were compared by the Tukey test (P < 0.05). THI ranged from 73.5 ± 1.3 to 82.2 ± 0.8. RT was 38.3 ± 0.26 to 39.3 ± 0.38 °C, but within the normal range for buffalo. RF ranged from 32.2 ± 9.2 to 56.5 ± 19.0 mov min-1, above the levels considered normal, and ST ranged from 23.6 ± 8.3 and 31.7 ± 5.4 °C. In both periods of the year and the two SSP's, ACIs were considered higher than ideal, ranging from 2.46 ± 0.33 to 3.31 ± 0.62 (SSP1) and 2.42 ± 0.30 to 3.45 ± 0.66 (SSP2).

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APA 7

al, R. J. M. J. E. (2010). Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental Environmental comfort of buffalo calves (Bubalus bubalis Linnaeus, 1758) on silvopastoral systems in the Eastern Amazon. https://doi.org/10.1590/S0044-59672010000400001

MLA

al, Raimundo José Moraes Júnior et. "Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental Environmental comfort of buffalo calves (Bubalus bubalis Linnaeus, 1758) on silvopastoral systems in the Eastern Amazon." 2010. https://doi.org/10.1590/S0044-59672010000400001.

Chicago

al, Raimundo José Moraes Júnior et. 2010. "Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental Environmental comfort of buffalo calves (Bubalus bubalis Linnaeus, 1758) on silvopastoral systems in the Eastern Amazon.". https://doi.org/10.1590/S0044-59672010000400001.

Harvard

al, R. J. M. J. E. 2010, Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental Environmental comfort of buffalo calves (Bubalus bubalis Linnaeus, 1758) on silvopastoral systems in the Eastern Amazon, Instituto Nacional de Pesquisas da Amazônia, available at: https://doi.org/10.1590/S0044-59672010000400001 [Accessed 7 Aug. 2026].

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Title
Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental Environmental comfort of buffalo calves (Bubalus bubalis Linnaeus, 1758) on silvopastoral systems in the Eastern Amazon
Author / contributors
Raimundo José Moraes Júnior et al
Publisher
Instituto Nacional de Pesquisas da Amazônia
Publication year
2010
ISSN
0044-5967
ISSN
0044-5967
Language
English

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