Luís Filipe Villas Boas de Freitas
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Luís Filipe Villas Boas de Freitas has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
- Matheus Paula Reis
Department of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
2 shared publications - Nilva Kazue Sakomura
Department of Animal Science, College of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, Brazil
2 shared publications - Alexandre Bonadiman Mariani
Universidade Federal do Rio Grande do Sul, Brasil
1 shared publication - Freddy Alexander Horna Morillo
Department of Animal Science, Universidade Estadual Paulista "Julio de Mesquita, Filho", FCAV/UNESP, São Paulo, Brazil
1 shared publication - Ines Andretta
Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
1 shared publication - Ingryd Palloma Teodósio da Nobrega
Department of Animal Sciences, Faculty of Agrarian and Veterinary Science, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
1 shared publication
Latest Publications
- Open Access
- 14 August 2023
- Published by Elsevier in Poultry Science
- Vol. 102 (11) , 103021
Coccidiosis infection and growth performance of broilers in experimental trials: insights from a meta-analysis including modulating factors
- 14 August 2023
- Published by Elsevier in Poultry Science
- Vol. 102 (11) , 103021
Open AccessCoccidiosis infection and growth performance of broilers in experimental trials: insights from a meta-analysis including modulating factors
- Open Access
Dynamics of Growth and Egg Traits in Three Dietary Balanced Protein Scenarios Applied for Laying Hens
The objective of this study was to evaluate laying hens from 8 to 102 weeks old, regarding their changes in performance, body composition, and egg components produced in three scenarios of nutrition. Three treatments designed to contain different levels of balanced protein (BP) were randomly assigned to the experimental units, performing ten replicates per treatment with 20 birds each. A standard feed was formulated to meet hen requirements and the ideal ratio between essential amino acids. Then, two experimental feeds were formulated to contain 20% above or below the dietary BP used in the standard feed. The responses evaluated were cumulated feed intake (g), daily feed intake (g/day), body weight (g), body composition (g of protein, fat, and ash), hen-housed egg production (%/hen-housed), egg production (%), egg weight (g), egg mass (g), and egg components (percentages of yolk, albumen, and eggshell). The dietary BP influenced the body composition, egg production, egg weight, and egg mass of white laying hens. The increase in dietary BP was related to an increase in body contents and egg weight, whereas hens consuming the low dietary balanced protein presented a lower body weight, leaner, and produced smaller eggs.
Open AccessDynamics of Growth and Egg Traits in Three Dietary Balanced Protein Scenarios Applied for Laying Hens
The objective of this study was to evaluate laying hens from 8 to 102 weeks old, regarding their changes in performance, body composition, and egg components produced in three scenarios of nutrition. Three treatments designed to contain different levels of balanced protein (BP) were randomly assigned to the experimental units, performing ten replicates per treatment with 20 birds each. A standard feed was formulated to meet hen requirements and the ideal ratio between essential amino acids. Then, two experimental feeds were formulated to contain 20% above or below the dietary BP used in the standard feed. The responses evaluated were cumulated feed intake (g), daily feed intake (g/day), body weight (g), body composition (g of protein, fat, and ash), hen-housed egg production (%/hen-housed), egg production (%), egg weight (g), egg mass (g), and egg components (percentages of yolk, albumen, and eggshell). The dietary BP influenced the body composition, egg production, egg weight, and egg mass of white laying hens. The increase in dietary BP was related to an increase in body contents and egg weight, whereas hens consuming the low dietary balanced protein presented a lower body weight, leaner, and produced smaller eggs.