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Sequential feeding system with nutritional adjustments for pigs in growing and finishing phases of two genetic lineages exposed to condition of cyclical heat stress

Grant number: 16/08682-1
Support type:Scholarships in Brazil - Master
Effective date (Start): July 01, 2016
Effective date (End): February 28, 2018
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Principal researcher:Luciano Hauschild
Grantee:Alícia Zem Fraga
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
Associated research grant:12/03781-0 - Sustainable precision feeding systems (PFS) for swine and poultry: estimating real-time individual nutrient requirements (pigs) and evaluation of the PFS (pigs and poultry), AP.JP
Associated scholarship(s):17/10899-1 - Sequential feeding system with nutritional adjustments for swine Growth and Termination phases of two genetic lines submitted to cyclical heat stress, BE.EP.MS


The implementation of this project aims to evaluate the effect of the sequential feeding management for pigs in growing and finishing stages of two genetic lineages exposed to condition of cyclical heat stress. A total of 80 castrated male pigs will be evaluated during a trial period of 84 days in a 2x4 factorial design (2 bloodlines and 4 treatments) with 10 repetitions. The animals will be randomly distributed into the treatments, with each bloodline being submitted to the following treatments: T1 - Basal diet during the 24 hours of the day; T2 - Low heat increment diet during the 24 hours of the day; T3 - Basal diet from 10 to 18h, and low heat increment diet from 18 to 10h; and T4 - Low heat increment diet from 10 to 18h, and basal diet from 18 to 10h. An automated feeding system able to individually monitor feed intake and feeding behavior variables (number of visits to the feeder, permanence time of the animal at the feeder and amount of food consumed per meal) will be used. Performance variables (daily feed intake, daily weight gain and feed conversion) will be evaluated on days 0, 28, 56 and 84, and on days 0, 42 and 84 of the experimental period, the composition of lean, lipid and osseous tissues of the animals will be measured using a dual-energy X-ray absorptiometry (DXA) equipment. Also on days 0, 42 and 84, blood samples will be collected for evaluation of the circulating level of thyroxine and triiodothyronine. The implementation of this proposal will assist the development of nutritional strategies to mitigate the effects of heat stress in pigs. (AU)

Scientific publications
(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)
FRAGA, ALICIA ZEM; REIS FURTADO CAMPOS, PAULO HENRIQUE; DA SILVA, WELEX CANDIDO; CAETANO, RAPHAEL PERINI; VEIRA, ALINI MARI; DOS SANTOS, LUAN SOUSA; HAUSCHILD, LUCIANO. Sequential feeding with high-fat/low-crude protein diets for two lines of growing-finishing pigs under daily cyclic high ambient temperature conditions. JOURNAL OF ANIMAL SCIENCE, v. 97, n. 6, p. 2493-2504, JUN 2019. Web of Science Citations: 0.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FRAGA, Alícia Zem. Sistema de alimentação sequencial com ajustes nutricionais para suínos em crescimento e terminação de duas linhagens genéticas submetidos a condição de estresse cíclico por calor. 2018. Master's Dissertation - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências Agrárias e Veterinárias..

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