Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
The impact of cyclic heat stress (CHS) and turning the lights on and off on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real-time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22/35 °C). The day was divided into four periods: PI <sub&...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/13/5/908 |
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| author | Marllon José Karpeggiane de Oliveira Marcio Valk Antônio Diego Brandão Melo Danilo Alves Marçal Cleslei Alisson Silva Graziela Alves da Cunha Valini Pedro Righetti Arnaut Joseane Penteado Rosa Gonçalves Ines Andretta Luciano Hauschild |
| author_facet | Marllon José Karpeggiane de Oliveira Marcio Valk Antônio Diego Brandão Melo Danilo Alves Marçal Cleslei Alisson Silva Graziela Alves da Cunha Valini Pedro Righetti Arnaut Joseane Penteado Rosa Gonçalves Ines Andretta Luciano Hauschild |
| author_sort | Marllon José Karpeggiane de Oliveira |
| collection | DOAJ |
| description | The impact of cyclic heat stress (CHS) and turning the lights on and off on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real-time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22/35 °C). The day was divided into four periods: PI <sub>(06–08 h)</sub>; PII <sub>(08–18 h)</sub>; PIII <sub>(18–20 h)</sub>; and PIV <sub>(20–06 h)</sub>. Automatic and Intelligent Precision Feeders recorded each feed event for each pig. An estimated meal criterion (49 min) was used to calculate the FB variables. Feed behavior in both ATs followed a circadian pattern. The CHS reduced the feed intake by 6.9%. The pigs prioritized feed intake during the coolest hours of the day; however, nocturnal cooling did not allow the pigs to compensate for the reduced meal size due to CHS. The highest meal size and most of the meals were observed during the lighting-on period. The pigs reduced their interval between meals during PII and PIII. The lighting program increased the meal size when the lights were switched on and reduced the meal size when the lights were switched off. Thus, the dynamics of the FB were largely influenced by AT, whereas the meal size was affected by the lighting program. |
| first_indexed | 2024-03-11T07:32:18Z |
| format | Article |
| id | doaj.art-d92fbe0ad49649f2ad90dbbd3c5de868 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-11T07:32:18Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-d92fbe0ad49649f2ad90dbbd3c5de8682023-11-17T07:13:56ZengMDPI AGAnimals2076-26152023-03-0113590810.3390/ani13050908Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat StressMarllon José Karpeggiane de Oliveira0Marcio Valk1Antônio Diego Brandão Melo2Danilo Alves Marçal3Cleslei Alisson Silva4Graziela Alves da Cunha Valini5Pedro Righetti Arnaut6Joseane Penteado Rosa Gonçalves7Ines Andretta8Luciano Hauschild9Department of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Statistics, Universidade Federal do Rio Grande do Sul, Porto Alegre 91540-000, Rio Grande do Sul, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilDepartment of Animal Science, Universidade Federal do Rio Grande do Sul, Porto Alegre 91540-000, Rio Grande do Sul, BrazilDepartment of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paulo, BrazilThe impact of cyclic heat stress (CHS) and turning the lights on and off on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real-time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22/35 °C). The day was divided into four periods: PI <sub>(06–08 h)</sub>; PII <sub>(08–18 h)</sub>; PIII <sub>(18–20 h)</sub>; and PIV <sub>(20–06 h)</sub>. Automatic and Intelligent Precision Feeders recorded each feed event for each pig. An estimated meal criterion (49 min) was used to calculate the FB variables. Feed behavior in both ATs followed a circadian pattern. The CHS reduced the feed intake by 6.9%. The pigs prioritized feed intake during the coolest hours of the day; however, nocturnal cooling did not allow the pigs to compensate for the reduced meal size due to CHS. The highest meal size and most of the meals were observed during the lighting-on period. The pigs reduced their interval between meals during PII and PIII. The lighting program increased the meal size when the lights were switched on and reduced the meal size when the lights were switched off. Thus, the dynamics of the FB were largely influenced by AT, whereas the meal size was affected by the lighting program.https://www.mdpi.com/2076-2615/13/5/908circadian rhythmfeed patternlight programmeal patternprecision feedingswine |
| spellingShingle | Marllon José Karpeggiane de Oliveira Marcio Valk Antônio Diego Brandão Melo Danilo Alves Marçal Cleslei Alisson Silva Graziela Alves da Cunha Valini Pedro Righetti Arnaut Joseane Penteado Rosa Gonçalves Ines Andretta Luciano Hauschild Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress Animals circadian rhythm feed pattern light program meal pattern precision feeding swine |
| title | Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress |
| title_full | Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress |
| title_fullStr | Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress |
| title_full_unstemmed | Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress |
| title_short | Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress |
| title_sort | feeding behavior of finishing pigs under diurnal cyclic heat stress |
| topic | circadian rhythm feed pattern light program meal pattern precision feeding swine |
| url | https://www.mdpi.com/2076-2615/13/5/908 |
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