Spatial analysis of thermal conditions of the pre-milking dairy cattle under climatization regimes

被引：12

作者：

da Silva, Irenilson M. ^{[1
]}

Pandorfi, Heliton ^{[2
]}

de Almeida, Gledson L. P. ^{[1
]}

Guiselini, Cristiane ^{[2
]}

Caldas, Anildo M. ^{[2
]}

Jacob, Arthur L. ^{[1
]}

机构：

[1] Univ Fed Rural Pernambuco, BR-52171900 Recife, PE, Brazil

[2] DTR UFRPE, Recife, PE, Brazil

来源：

REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2012年 / 16卷 / 08期

关键词：

ambience; welfare; thermal comfort; spatial variability; VARIABILITY; STRESS; COWS;

D O I：

10.1590/S1415-43662012000800013

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The objective of this study was to characterize the spatial variability of air temperature in pre-milking room for different operation times of the automated adiabatic evaporative cooling system. The air temperature was monitored at 35 points, in regular intervals of 1 m, as a grid, to study the spatial variability and construction of kriging maps. Different times of exposure of the animals to the cooling system in the waiting room (20, 30, 40 min and control - 0 min) were considered. Through the results, it was observed that use of geostatistics enabled to define areas with different spatial variability for temperature, identifying specific areas in the pre-milking room that showed values above the recommended levels for the thermal comfort. The cooling system ensured the better thermal condition with the 40 min exposure, obtaining on average temperature within the thermal comfort condition for lactating cows.

引用

页码：903 / 909

页数：7

共 17 条

[1]

Avendano R. L., 2006, LIVESTOCK PRODUCTION, V105, P198

[2]

Borges Giselle, 2010, Eng. Agríc., V30, P377, DOI 10.1590/S0100-69162010000300002

[3] FIELD-SCALE VARIABILITY OF SOIL PROPERTIES IN CENTRAL IOWA SOILS [J].

CAMBARDELLA, CA ;

MOORMAN, TB ;

NOVAK, JM ;

PARKIN, TB ;

KARLEN, DL ;

TURCO, RF ;

KONOPKA, AE .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1994, 58 (05) :1501-1511

[4] Investment in system in the pre-milking of girolando cows and its effects on milk production [J].

de Almeida, Gledson L. P. ;

Pandorfi, Heliton ;

Guiselini, Cristiane ;

de Almeida, Gleidiana A. P. ;

Morril, Waldirene B. B. .

REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL, 2010, 14 (12) :1337-1344

[5] Climatic spatial variability of a dairy freestall barn [J].

de Faria, Flaviane Flor ;

de Moura, Daniella Jorge ;

de Souza, Zigomar Menezes ;

Matarazzo, Soraia Vanessa .

CIENCIA RURAL, 2008, 38 (09) :2498-2505

[6] Is the temperature-humidity index the best indicator of heat stress in lactating dairy cows in a subtropical environment? [J].

Dikmen, S. ;

Hansen, P. J. .

JOURNAL OF DAIRY SCIENCE, 2009, 92 (01) :109-116

[7]

Isaaks EH, 1989, INTRO APPL GEOESTATI

[8]

Little TM., 1978, AGR EXPT

[9]

Matarazzo SV, 2007, B IND ANIM, V64, P221

[10] Winter broiler litter gases and nitrogen compounds: Temporal and spatial trends [J].

Miles, D. M. ;

Rowe, D. E. ;

Owens, P. R. .

ATMOSPHERIC ENVIRONMENT, 2008, 42 (14) :3351-3363

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