Feeding Behavior of Finishing Pigs under Diurnal Cyclic Variation in Ambient Temperature

• DOI: 10.20944/preprints202301.0418.v1
• Publication Date: 2023-01-25T09:07:16Z
• Authors: Marllon José Karp...; Marcio Valk; Antônio Diego Bra...; Danilo Alves Marçal; Cleslei Alisson S...; Graziela Alves da...; Pedro Righetti Ar...; Joseane Penteado ...; Ines Andretta; Luciano Hauschild
• Keywords: Diurnal temperature variation

The impact of cyclic heat stress (CHS) and lighting events on pig feeding behavior (FB) was investigated. FB 90 gilts recorded in real time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22°/35 °C). day divided into four periods: PI (06-08 h); PII (08-18 PIII (18-20 PIV (20-06 h). Automatic Intelligent Precision Feeders each feed event for pig. An estimated meal criterion (49 minutes) used to calculate the variables. Feed both ATs followed a circadian pattern. reduced intake by 6.9%. Pigs prioritized during coolest hours day; however, nocturnal cooling did not allow pigs compensate size due CHS. highest most meals were observed lighting-on period. their interval between periods II III. program increased when lights switched off. Thus, dynamics largely influenced AT, while affected program.