EFFECT OF PRECISION NUTRITION WITH AMINO ACID SUPPLEMENTATION FUNCTIONAL INFORMATION ON THE PERFORMANCE AND BODY COMPOSITION OF SWINE UNDER ENVIRONMENTAL CHALLENGE

• Grant number: 21/09778-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2021
• End date: September 30, 2022
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Luciano Hauschild
• Grantee: Isadora Leticia Gianeis de Souza
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Associated research grant: 18/15559-7 - Precision nutrition for sanitary challenged pigs reared in hot climate areas, AP.JP2

Abstract

The aim of the project is to evaluate the effect of dietary amino acid supplementation using aPrecision feeding system on performance and body composition of pigs housed underdifferent environmental conditions. 96 female swine will be used distributed in a factorial scheme2×2×2: two environmental conditions (ideal - single-origin animals housed under ideal condition ofroom temperature and hygiene; or precarious - mixture of animals from different origins housed in undercyclic heat stress, poor hygiene conditions and oral challenge by Salmonella Typhimurium);two diets (control (100%) or supplemented (120%) with Met, Tre and Trip:Lysine, according toNRC, 2012); two power systems (conventional by phase or power supply systemprecision). Conventional or precision feeding systems will be supported by feedersautomated precision machines (AIPFs) for the supply of diets to swine. The experiment will haveduration of 28 days, starting from the exposure of the animals to the environmental challenge. weekly weighingswill be carried out to monitor performance and to obtain data that will be usedto calibrate the precision feeding model proposed by Hauschild et al. (2020). prior tobeginning (d -3 and -2) and end (d 26 and 27) of the experimental period will be carried out the compositional analyzesbody (lean, lipid and bone mass deposition). Data will be analyzed by the linear modelmixed via the SAS GLIMMIX procedure (version 9.4; SAS Inst. Inc., Cary, NC) testing thefixed effects of factors and their interactions. P values < 0.05 will be considered significant. THEcarrying out the project will allow the development of nutritional strategies to mitigate the effectshealth challenges on the metabolism and welfare of growing pigs.