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Effects of dietary fiber on performance and egg quality of laying hens at pre-laying and laying peak
Andrade, Pedro Gabriel Carneiro de; Mendonça, Marco Antonio de Freitas; Cruz, Frank George Guimarães; Rufino, João Paulo Ferreira; Silva, Fernanda Moura Fernandes; Reis, Lucas de Almeida.
Affiliation
  • Andrade, Pedro Gabriel Carneiro de; Universidade Federal do Amazonas. Faculdade de Ciências Agrárias. Manaus. BR
  • Mendonça, Marco Antonio de Freitas; Universidade Federal do Amazonas. Faculdade de Ciências Agrárias. Manaus. BR
  • Cruz, Frank George Guimarães; Universidade Federal do Amazonas. Faculdade de Ciências Agrárias. Manaus. BR
  • Rufino, João Paulo Ferreira; Universidade Federal do Amazonas. Faculdade de Ciências Agrárias. Manaus. BR
  • Silva, Fernanda Moura Fernandes; Universidade Federal do Amazonas. Faculdade de Ciências Agrárias. Manaus. BR
  • Reis, Lucas de Almeida; Universidade Federal do Amazonas. Faculdade de Ciências Agrárias. Manaus. BR
Acta sci., Anim. sci ; 45: e57534, 2023. tab
Article in En | VETINDEX | ID: biblio-1396727
Responsible library: BR68.1
ABSTRACT
This study aimed to evaluate the effects of different levels of dietary fiber on the performance and egg quality of laying hens at pre-laying and laying peak periods. The experimental period was divided into three periods pre-laying (16 to 19 weeks of age), the start of laying (20 to 22 weeks of age) and laying peak (23 to 28 weeks of age). The experimental design was completely randomized with treatments constituted by five levels of fiber (2.00, 2.50, 3.00, 3.50, and 4.00%) in the diets, with five replicates (pens) of six birds each, totalling 180 hens. Performance and egg quality results were evaluated by polynomial regression at 5%. Fiber levels were not influenced (p >0.05) the first laying of the hens. However, levels above 2.50% of fiber provided worst (p <0.05) performance results, regardless of the period evaluated. Shortly after the start of laying, higher levels of fiber also caused a linear reduction (p <0.05) on egg weight and percentages of yolk and albumen, and an increase (p <0.05) on eggshells. Higher fiber levels caused a linear reduction (p <0.05) in the quality of the eggs, regardless of the period evaluated. It was concluded that the fiber levels did not influence the start period of the laying. Both pre-laying and start of the laying, levels above 2.5% of fiber caused a gradual worsening in performance. From the start of laying up to laying peak, levels above 2.5% of fiber also caused a gradual worsening in egg quality.(AU)
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Full text: 1 Database: VETINDEX Main subject: Dietary Fiber / Chickens / Eating / Eggs Limits: Animals Language: En Journal: Acta sci., Anim. sci Year: 2023 Document type: Article

Full text: 1 Database: VETINDEX Main subject: Dietary Fiber / Chickens / Eating / Eggs Limits: Animals Language: En Journal: Acta sci., Anim. sci Year: 2023 Document type: Article