Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein
This study was carried out to investigate the response of laying hens given a repletion or depletion in dietary balanced protein (BP) during the laying phase period. At the beginning of the rearing period (eight w-old), four-hundred pullets were equally distributed and received one of two experiment...
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MDPI AG
2022-09-01
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| Online Access: | https://www.mdpi.com/2076-2615/12/19/2567 |
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| author | Ingryd Palloma Teodósio da Nóbrega Matheus de Paula Reis Rony Riveros Lizana Thaila Fernanda de Moura Guilherme Ferreira da Silva Teofilo Letícia Cardoso Bittencourt Nilva Kazue Sakomura |
| author_facet | Ingryd Palloma Teodósio da Nóbrega Matheus de Paula Reis Rony Riveros Lizana Thaila Fernanda de Moura Guilherme Ferreira da Silva Teofilo Letícia Cardoso Bittencourt Nilva Kazue Sakomura |
| author_sort | Ingryd Palloma Teodósio da Nóbrega |
| collection | DOAJ |
| description | This study was carried out to investigate the response of laying hens given a repletion or depletion in dietary balanced protein (BP) during the laying phase period. At the beginning of the rearing period (eight w-old), four-hundred pullets were equally distributed and received one of two experimental feeds: 1-Low BP (L) and 2-High BP (H). For the laying period (19 to 102 w-old), four feeding programs were designed based on the same treatments for rearing phases (LL, HH, LH, HL), where subsequent letters indicate the feed received during the rearing and laying period, respectively. The performance responses, egg quality, and body composition were periodically collected during the laying period. Two-way ANOVA repeated measures analysis was applied to evaluate the data. Nonlinear regression models with groups were used to compare treatments in the laying phase, with the treatments being the group evaluated. All performance traits were somehow influenced by the level of BP in the feed (<i>p</i> < 0.050). Hens subjected to the repletion treatment (LH) demonstrated a recovery in performance after 38 w-old. The opposite result was observed for hens on the depletion treatment (HL). All egg components were affected by dietary BP (<i>p</i> < 0.050). Laying hens demonstrated a limited capacity to overcome a reduction in dietary BP during production, but they were able to recover from a previous deficient feed once they were given an opportunity to do so. |
| first_indexed | 2024-03-09T22:08:15Z |
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| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-09T22:08:15Z |
| publishDate | 2022-09-01 |
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| record_format | Article |
| series | Animals |
| spelling | doaj.art-3563cc9067f948a69ebee311e99c5f862023-11-23T19:35:50ZengMDPI AGAnimals2076-26152022-09-011219256710.3390/ani12192567Response of Laying Hens to Repletion and Depletion in Dietary Balanced ProteinIngryd Palloma Teodósio da Nóbrega0Matheus de Paula Reis1Rony Riveros Lizana2Thaila Fernanda de Moura3Guilherme Ferreira da Silva Teofilo4Letícia Cardoso Bittencourt5Nilva Kazue Sakomura6Department of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, BrazilDepartment of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, BrazilDepartment of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, BrazilDepartment of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, BrazilDepartment of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, BrazilDSM Brazil, Mairinque 18120-000, SP, BrazilDepartment of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, BrazilThis study was carried out to investigate the response of laying hens given a repletion or depletion in dietary balanced protein (BP) during the laying phase period. At the beginning of the rearing period (eight w-old), four-hundred pullets were equally distributed and received one of two experimental feeds: 1-Low BP (L) and 2-High BP (H). For the laying period (19 to 102 w-old), four feeding programs were designed based on the same treatments for rearing phases (LL, HH, LH, HL), where subsequent letters indicate the feed received during the rearing and laying period, respectively. The performance responses, egg quality, and body composition were periodically collected during the laying period. Two-way ANOVA repeated measures analysis was applied to evaluate the data. Nonlinear regression models with groups were used to compare treatments in the laying phase, with the treatments being the group evaluated. All performance traits were somehow influenced by the level of BP in the feed (<i>p</i> < 0.050). Hens subjected to the repletion treatment (LH) demonstrated a recovery in performance after 38 w-old. The opposite result was observed for hens on the depletion treatment (HL). All egg components were affected by dietary BP (<i>p</i> < 0.050). Laying hens demonstrated a limited capacity to overcome a reduction in dietary BP during production, but they were able to recover from a previous deficient feed once they were given an opportunity to do so.https://www.mdpi.com/2076-2615/12/19/2567egg productionideal amino acid profileegg componentsbody composition |
| spellingShingle | Ingryd Palloma Teodósio da Nóbrega Matheus de Paula Reis Rony Riveros Lizana Thaila Fernanda de Moura Guilherme Ferreira da Silva Teofilo Letícia Cardoso Bittencourt Nilva Kazue Sakomura Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein Animals egg production ideal amino acid profile egg components body composition |
| title | Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein |
| title_full | Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein |
| title_fullStr | Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein |
| title_full_unstemmed | Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein |
| title_short | Response of Laying Hens to Repletion and Depletion in Dietary Balanced Protein |
| title_sort | response of laying hens to repletion and depletion in dietary balanced protein |
| topic | egg production ideal amino acid profile egg components body composition |
| url | https://www.mdpi.com/2076-2615/12/19/2567 |
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