Cooling ventilation at farrowing for sows from first to third parturition

  • Pedro Henrique Watanabe Universidade Federal do Ceará
  • Tatianne Alexandre Azevedo Universidade Federal do Ceará
  • Margarita Augusto do Nascimento Silva Universidade Federal do Ceará
  • Nathalia Martins Oliveira Universidade Federal do Ceará
  • Thalles Ribeiro Gomes Universidade Federal do Ceará
  • Tiago Silva Andrade Universidade Federal do Ceará
  • José Antônio Delfino Barbosa Filho Universidade Federal do Ceará

Abstract

This study aimed to evaluate the thermal comfort considering natural and cooling ventilation on the performance, physiological parameters and thermal comfort indices for sows from first to third parturition. A total of 30 sows from commercial lineage (genetic base Landrace x Large White) initially weighing 252.3±5.7, 280.8±9.5 and 324.5±4.8 kg at first, second and third parturition, respectively, were distributed in a 3x2 factorial arrangement, considering the three parturition orders and the two ventilation methods, with five replicas per treatment. The effect of ventilation methods and times of the day on relative humidity, radiant thermal load, temperature and humidity index and black globe humidity index. There was an interaction among ventilation methods and parturition order for sow weight at weaning and daily feed intake. Regarding the females physiological parameters, with the exception of rectal temperature, there was an interaction between ventilation methods and times of the day. The thermal conditioning using cooling ventilation provides better values for thermal comfort indexes of the sows and promotes an increase in feed intake, mainly in gilts.

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Author Biographies

Pedro Henrique Watanabe, Universidade Federal do Ceará

Departamento de Zootecnia - Universidade Federal do Ceará

Nutrição de animais não-ruminantes

Tatianne Alexandre Azevedo, Universidade Federal do Ceará
Zootecnista - Universidade Federal do Ceará
Margarita Augusto do Nascimento Silva, Universidade Federal do Ceará
Zootecnista - Universidade Federal do Ceará
Nathalia Martins Oliveira, Universidade Federal do Ceará
Zootecnista - Universidade Federal do Ceará
Thalles Ribeiro Gomes, Universidade Federal do Ceará
Doutorando pelo Programa de Doutorado Integrado em Zootecnia (PDIZ)
Tiago Silva Andrade, Universidade Federal do Ceará
Zootecnista - Universidade Federal do Ceará
José Antônio Delfino Barbosa Filho, Universidade Federal do Ceará
Prof. Adjunto - Departamento de Engenharia Agrícola
Published
04-01-2019
How to Cite
Watanabe, P., Azevedo, T., Silva, M., Oliveira, N., Gomes, T., Andrade, T., & Barbosa Filho, J. A. (2019). Cooling ventilation at farrowing for sows from first to third parturition. Comunicata Scientiae, 9(4), 556-564. https://doi.org/10.14295/cs.v9i4.1098
Section
Original Article