Physiological and productive responses of environmental control on housed sows

Scientia Agricola

Carlos Eduardo Bites Romanini²  Yamilia Barrios Tolon¹  Irenilza De Alencar Nääs¹  Daniella Jorge De Moura¹ 

[1] ,UNICAMP FEAGRI Programa de Pós-Graduação em Engenharia Agrícola

关键词: gestating sows;    lactating sows;    thermal stress;    matrizes suínas gestantes;    matrizes suínas em aleitamento;    estresse térmico;   

DOI  :  10.1590/S0103-90162008000400002

来源: SciELO

【 摘 要 】

Swine housing must promote an adjusted environment for thermal comfort and high animal productivity without negatively affecting the sow performance and reproductive response. This study evaluated the use of distinct environmental cooling equipments on sow performance, both on the gestation and on nursing in open sided housing. Two treatments were tested in the gestation building: natural ventilation and mechanical ventilation associated to fogging; while in the nursing rooms three treatments were tested: natural ventilation; mechanical ventilation; and evaporative cooling with forced ventilation. Sows were randomly chosen from the same genetic lot form six combined treatments. The evaporative cooling system in the farrowing room differed for piglet performances, at birth (4% higher) and on daily weight gain (15% higher), and also for sow physiological response improving the respiratory rate (8%) and back fat thickness (3%), without influencing skin temperature. The use of evaporative cooling directed to the sow head during nursing improved the physiological and productive results.

【 授权许可】

CC BY   
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