1. Neurophysiology, behaviour and animal welfare assessment. Department of Animal Production and Agriculture, Universidad Autónoma Metropolitana, Xochimilco campus, Mexico City, Mexico.
2. Facultad de Ciencias Agropecuarias, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
3. Graduate and Research Department, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Victoria City, Tamaulipas, Mexico.
4. Livestock Science Department, Universidad Nacional Autónoma de México (UNAM), Facultad de Estudios Superiores Cuautitlán, State of Mexico, Mexico
5. Facultad de Medicina Veterinaria y Zootecnia. (CEIEPP), Universidad Nacional Autónoma de México (UNAM), Mexico City. Mexico.