Quiñonero, Jose, Carlos García-Santamaría, Emilio María-Dolores, and Eva Armero. 2010. “Physiological Indicators of Stress in Gestating Sows under Different Cooling Systems”. Pesquisa Agropecuaria Brasileira 44 (11):1549-52. https://doi.org/10.1590/S1678-3921.pab2009.v44.2446.