Air quality in swine growing and finishing facilities with different building typologies

Revista Brasileira de Engenharia Agricola e Ambiental

Sousa, Francine A.¹  Cecchin, Daiane²  Campos, Alessandro T.³  Yanagi Junior, Tadayuki³  Amaral, Pedro I. S.³  Cruz, Vasco F. da⁴ 

[1] Secretaria de Agricultura de Aracruz, Aracruz, Brazil;Universidade Federal Fluminense, Niterói, Brazil;Universidade Federal de Lavras, Lavras, Brazil;Universidade de Évora, Évora, Portugal

关键词: animal welfare;    rural buildings;    gas concentration;    sound pressure.;   

DOI  :  10.1590/1807-1929/agriambi.v21n5p339-343

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The objective of this study was to evaluate the concentration of gases in three swine growing and finishing facilities with different building typologies, regarding floor and dividers. The experiment compared three treatments: pen with water depth, pen with partially slotted floor on the sides, and pen with partially slotted floor on sides and in the center. Measurements of instantaneous concentrations of ammonia (NH3 ppm) and carbon dioxide (CO2 ppm) were taken at animal level. The levels of sound pressure (dB) at animal level and at 1.50 m from the floor were also recorded. It was observed that the pen with water depth was the one with the highest average concentration of NH3. Although there was a significant difference in CO2 concentrations, the observed values are within the limits allowed by the Brazilian standards; thus, it is assumed that the facilities do not cause discomfort in relation to CO2 levels. The pen with water depth possibly caused discomfort to the animals, since the NH3 concentration was above the values that can cause problems to the animals, according to the recommendation of the literature. There was no influence of the type of pen on the sound pressure at any time.

【 授权许可】

CC BY