Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor
The purpose of this paper was to observe the use of bedding (wood shavings) in physiological variables that indicate thermal stress in gestating sows. The experiment was conducted in order to evaluate the effect of two types of floor (concrete and wood shavings). Worse microclimatic conditions were...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Engenharia Agrícola
2014-02-01
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| Series: | Engenharia Agrícola |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100001&tlng=en |
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| author | Maria L. A. Nunes Késia O. da S. Miranda João M. B. A. de Faria Afrânio M. C. Vieira Irineu Arcaro Júnior |
| author_facet | Maria L. A. Nunes Késia O. da S. Miranda João M. B. A. de Faria Afrânio M. C. Vieira Irineu Arcaro Júnior |
| author_sort | Maria L. A. Nunes |
| collection | DOAJ |
| description | The purpose of this paper was to observe the use of bedding (wood shavings) in physiological variables that indicate thermal stress in gestating sows. The experiment was conducted in order to evaluate the effect of two types of floor (concrete and wood shavings). Worse microclimatic conditions were observed in bedding systems (P<0.05), with an increase in temperature and enthalpy of 1.14 ºC and 2.37 kJ.kg dry air-1, respectively. The floor temperature at the dirty area was higher in the bedding presence in comparison to its absence. In spite of the worse microclimatic conditions in the bedding, the rectal temperature did not differ significantly (P>0.05) but the skin surface temperature was higher in the bedding systems. The same occurred with the respiratory rates. The physical characteristics of the floor material influenced the rate of heat loss by conductance. Estimated values were 35.04 and 7.99 W m-2 for the conductive heat loss between the animal and floor for treatments with or without bedding, respectively. The use of bedding in sow rearing has a negative impact on microclimatic conditions, what implies in thermoregulatory damages. |
| first_indexed | 2024-12-24T01:16:32Z |
| format | Article |
| id | doaj.art-c2e3925ee5ee41f888780d5e8b404227 |
| institution | Directory Open Access Journal |
| issn | 0100-6916 |
| language | English |
| last_indexed | 2024-12-24T01:16:32Z |
| publishDate | 2014-02-01 |
| publisher | Sociedade Brasileira de Engenharia Agrícola |
| record_format | Article |
| series | Engenharia Agrícola |
| spelling | doaj.art-c2e3925ee5ee41f888780d5e8b4042272022-12-21T17:22:45ZengSociedade Brasileira de Engenharia AgrícolaEngenharia Agrícola0100-69162014-02-013411710.1590/S0100-69162014000100001Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floorMaria L. A. Nunes0Késia O. da S. Miranda1João M. B. A. de Faria2Afrânio M. C. Vieira3Irineu Arcaro Júnior4Universidade do Estado de Santa CatarinaUniversidade de São PauloUniversidade de BrasíliaUniversidade Federal de São CarlosInstituto de ZootecniaThe purpose of this paper was to observe the use of bedding (wood shavings) in physiological variables that indicate thermal stress in gestating sows. The experiment was conducted in order to evaluate the effect of two types of floor (concrete and wood shavings). Worse microclimatic conditions were observed in bedding systems (P<0.05), with an increase in temperature and enthalpy of 1.14 ºC and 2.37 kJ.kg dry air-1, respectively. The floor temperature at the dirty area was higher in the bedding presence in comparison to its absence. In spite of the worse microclimatic conditions in the bedding, the rectal temperature did not differ significantly (P>0.05) but the skin surface temperature was higher in the bedding systems. The same occurred with the respiratory rates. The physical characteristics of the floor material influenced the rate of heat loss by conductance. Estimated values were 35.04 and 7.99 W m-2 for the conductive heat loss between the animal and floor for treatments with or without bedding, respectively. The use of bedding in sow rearing has a negative impact on microclimatic conditions, what implies in thermoregulatory damages.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100001&tlng=enSwinethermal regulationzootechnical installations |
| spellingShingle | Maria L. A. Nunes Késia O. da S. Miranda João M. B. A. de Faria Afrânio M. C. Vieira Irineu Arcaro Júnior Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor Engenharia Agrícola Swine thermal regulation zootechnical installations |
| title | Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor |
| title_full | Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor |
| title_fullStr | Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor |
| title_full_unstemmed | Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor |
| title_short | Physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor |
| title_sort | physiological evaluation of heat stress in gestating sows under different housing systems in bedding and concrete floor |
| topic | Swine thermal regulation zootechnical installations |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100001&tlng=en |
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