Net energy system for poultry

• Grant number: 19/26575-6
• Support Opportunities: Research Projects - Thematic Grants
• Start date: July 01, 2020
• End date: June 30, 2026
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Nilva Kazue Sakomura
• Grantee: Nilva Kazue Sakomura
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Pesquisadores principais: Marcos Macari
• Associated researchers: Alessandro de Mello Varani ; Alex Sandro Campos Maia ; Etienne Labussière ; Jacob van Milgen ; Jean Noblet ; Kênia Cardoso Bícego ; Marie-Pierre Létourneau-Montminy ; Mingan Choct ; Robert Mervyn Gous ; Robert Swick ; Sandro Cerrate ; Shu-Biao Wu
• Associated research grant(s): 20/14441-2 - Multi-user equipment approved in grant 2019/26575-6: respirometry system with flow kit pump, AP.EMU
• Associated scholarship(s): 25/00729-8 - Evaluation of energy systems (metabolizable vs. net) on the economic and performance response of broiler chickens, BP.TT; 25/00164-0 - Training and technical support for analysis and calorimetry laboratories, BP.TT; 24/04197-8 - Implementation of EL factor models to estimate nutritional requirements and development of equations to estimate the energy value of diets in modeling spreadsheets, BP.PD; + associated scholarships 22/11111-7 - Effect of feathering on fasting heat production, BP.IC; 22/07690-1 - Evaluation of poultry net energy system under heat stress condition on broiler and molecular tools utilization for the metabolic response, BP.PD; 21/04425-2 - Study of the dynamics of energy use broiler breeders over time of layer and effect of different levels of energy intake, BP.MS; 21/10555-6 - Determinação do fasting heat production em frangas de postura, BP.IC; 21/08142-5 - Health challenge effect on the heat production partitioning and energy utilization in broiler chicks, BP.DD; 21/07299-8 - Net energy system for poultry, BP.TT - associated scholarships

Abstract

This project aims to establish net energy (NE) system for poultry. It will be determined the requirements and NE values for feedstuffs. The indirect calorimetry method will be used to measure the energy metabolism (FHP, HP and RQ), this method has already calibrated in previous studies in our laboratory. Based on factorial approach, NE requirements will be partitioned into the maintenance (NEm) and retained energy (RE). NEm will be measured by Fasting heat production (FHP). Effects of temperature, lighting program, feathering, and health status on FHP will be measured in broiler chicks. RE will be considered from deposition of protein (ERp) and fat (ERf) in the body or eggs and their caloric coefficients. Factorial models to estimated NE requirements will be elaborated based results of previous studies. To evaluated NE of feedstuff, a series of assays will be conducted with broilers and laying hens to determine NE of diets formulated with 16 ingredients used in poultry diets. Multiple linear regressions will be determined to estimate NE values from dietary nutrient content of diets for broilers and laying hens. In addition, two studies will be carried out to assess the effect of enzyme supplementation and pelletizing diets on energy partitioning. To compare the ME and NE systems, performance trials will with broilers and laying hens will be carried out in order to evaluate both prediction of performance and reduction of heat stress in NE system. Reduction of heat stress will be evaluated by heat shock proteins in broilers using PCRq. The models to estimated NE requirements for poultry and the equations to predict NE of feedstuffs will be implemented in a software to formulate diets based on NE system for poultry. (AU)

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

TEOFILO, GUILHERME FERREIRA DA SILVA; MORILLO, FREDDY ALEXANDER HORNA; KAREEM, DAMILOLA UTHMAN; LIZANA, RONY RIVEROS; BONAGURIO, LUCAS PIMENTEL; CAMARGOS, ROSIANE DE SOUZA; VAN MILGEN, JACOB; MACARI, MARCOS; SAKOMURA, NILVA KAZUE. Partitioning of energy intake in broiler breeders from 27 to 63 weeks old. LIVESTOCK SCIENCE, v. 288, p. 7-pg., 2024-08-22. (19/26575-6, 20/14441-2, 21/04425-2)

TEOFILO, G. F. S.; RIVEROS, R. L.; LEME, B. B.; CAMARGOS, R. S.; MACARI, M.; FERNANDES, J. B. K.; SAKOMURA, N. K.. Energy utilization and requirement of broiler breeders during the production phase. POULTRY SCIENCE, v. 102, n. 11, p. 10-pg., 2023-09-04. (19/26575-6, 21/04425-2)

MORILLO, FREDDY ALEXANDER HORNA; MACARI, MARCOS; REIS, MATHEUS DE PAULA; TEOFILO, GUILHERME FERREIRA DA SILVA; CAMARGOS, ROSIANE DE SOUZA; SAKOMURA, NILVA KAZUE. Energy requirements for maintenance as a function of body weight and critical temperature in broiler chickens. LIVESTOCK SCIENCE, v. 277, p. 6-pg., 2023-09-23. (19/26575-6)

DA SILVA TEOFILO, GUILHERME FERREIRA; LIZANA, RONY RIVEROS; CAMARGOS, ROSIANE DE SOUZA; LEME, BRUNO BALBINO; HORNA MORILLO, FREDDY ALEXANDER; SILVA, RAULLY LUCAS; KOCHENBORGER FERNANDES, JOAO BATISTA; SAKOMURA, NILVA KAZUE. Effect of feed restriction on the maintenance energy requirement of broiler breeders. ANIMAL BIOSCIENCE, v. 35, n. 5, p. 8-pg., 2022-05-01. (19/26575-6, 19/26028-5)

SILVA, R. L.; RIVEROS, R.; ALMEIDA, A. K.; MACARI, M.; LEME, B. B.; SAKOMURA, N. K.. Are mixed models more effective than linear models in predicting energy utilization for laying hens?. LIVESTOCK SCIENCE, v. 294, p. 8-pg., 2025-02-22. (19/26575-6)

RIVEROS, RONY LIZANA; CAMARGOS, ROSIANE DE SOUSA; MACARI, MARCOS; REIS, MATHEUS DE PAULA; LEME, BRUNO BALBINO; SAKOMURA, NILVA KAZUE. Dynamic of heat production partitioning in rooster by indirect calorimetry. ANIMAL BIOSCIENCE, v. 36, n. 1, p. 9-pg., 2023-01-01. (19/26575-6)

HORNA, F.; LEANDRO, G. S.; BICEGO, K. C.; MACARI, M.; REIS, M. P.; CERRATE, S.; SAKOMURA, N. K.. Energy cost of physical activities in growing broilers. BRITISH POULTRY SCIENCE, v. 64, n. 4, p. 8-pg., 2023-05-07. (19/26575-6)