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Meta-analysis of different nutritional plans during the post-weaning phase and its impact on the finishing of beef cattle in tropical regions

Grant number: 16/01961-2
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): March 28, 2016
Effective date (End): March 27, 2017
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Production
Principal researcher:Flávio Dutra de Resende
Grantee:Ivanna Moraes de Oliveira
Supervisor abroad: Maria Del Mar Campo Arribas
Home Institution: Departamento de Descentralização do Desenvolvimento (APTA Regional). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil
Research place: Universidad de Zaragoza, Spain  
Associated to the scholarship:13/10340-3 - Feeding Strategies in the Growing and Finishing Cattle Nelore, BP.PD


Our objective in this study will be to evaluate, together with Universidad de Zaragoza, the information obtained over five years of experiments assessing nutritional plans for beef cattle. We aim to study the data through meta-analysis, which will result in a more in-depth and consistent evaluation of the individual data, because separate conclusions, in some cases, do not allow for the combined interpretation of results. The present proposal will be achieved through a partnership between the Polo Regional da APTA/Colina - SP and Universidad de Zaragoza. Data from five years of experiments, conducted between 2005 and 2013 will be evaluated, totaling 507 animals. The individual objective of the experiments was to evaluate the impact of nutritional strategies during the production cycle (from weaning to slaughter) on performance, and carcass and meat characteristics. The nutritional strategies consisted of the integration between type and level of supply of supplement and periods of the year (dry season and wet season, during the post-weaning phase, on pastures), which resulted in different animal growth rates. The different nutritional strategies also had a different impact on the carcass fat cover and quality. The nutritional plans for the post-weaning phase were determined according to the qualitative and quantitative deficiencies of the forage in each season of the year (first dry and wet seasons in the animal's life). The animals were finished during the second dry season of their lives, with the supply of a high level of concentrate (feedlot or pasture). In all experiments, the forage was evaluated quantitatively and qualitatively, and performance data (body weight, average daily gain) were collected. Comparative slaughters were performed at the beginning and end of each dry and wet season; all remaining animals were slaughtered at the end of the experiment (second dry season). In each slaughter, all the animals' body components were weighed, so the empty body weight could be determined. The section between the 9th and 11th ribs was collected and evaluated to estimate the carcass physical and chemical compositions. Carcass and meat quality data were collected and evaluated. From a systematic review of the data, a meta-analysis will be used to interpret the interactions between the nutritional plans and experiments. This will generate more consistent conclusions, transforming the results of research studies into knowledge for the field, thereby providing greater precision and estimates of the treatments' effects. Thus, from an overview, we will have better bases for the design of new experiments, clarifying unanswered questions and doubts that have already been solved. (AU)

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Scientific publications (9)
(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)
PIZA ROTH, MARCELLA TOLEDO; FERNANDES, RODOLFO MACIEL; CUSTODIO, LETICIA; MORETTI, MATHEUS HENRIQUE; OLIVEIRA, IVANNA MORAES; PRADOS, LAURA FRANCO; SIQUEIRA, GUSTAVO REZENDE; DE RESENDE, FLAVIO DUTRA. Effect of supplementation level on performance of growing Nellore and its influence on pasture characteristics in different seasons. Italian Journal of Animal Science, v. 18, n. 1, p. 215-225, . (16/01961-2, 11/02937-4, 13/10340-3)
BENATTI, JOAO MARCOS B.; ALVES NETO, JOAO ALEXANDRINO; DE OLIVEIRA, IVANNA M.; DE RESENDE, FLAVIO D.; SIQUEIRA, GUSTAVO R.. Effect of increasing monensin sodium levels in diets with virginiamycin on the finishing of Nellore cattle. ANIMAL SCIENCE JOURNAL, v. 88, n. 11, p. 1709-1714, . (13/10340-3, 16/01961-2)
SOUZA CASTRO, LAURA CRISTINA; DE CAMPOS, WELLINGTON DA COSTA; DE OLIVEIRA, IVANNA MORAES; FERNANDES, RODOLFO MACIEL; MORETTI, MATHEUS HENRIQUE; PIZA ROTH, MARCELLA TOLEDO; DE RESENDE, FLAVIO DUTRA; SIQUEIRA, GUSTAVO REZENDE. Replacement of a protein-energy supplement by a same-cost maize-based supplement on performance and product quality of pasture-finished Nellore heifers. ANIMAL PRODUCTION SCIENCE, v. 60, n. 15, . (17/50339-5, 13/10340-3, 16/01961-2)
ROTH, M. T. P.; RESENDE, F. D.; OLIVEIRA, I. M.; FERNANDES, R. M.; CUSTODIO, L.; SIQUEIRA, G. R.. Does supplementation during previous phase influence performance during the growing and finishing phase in Nellore cattle?. LIVESTOCK SCIENCE, v. 204, p. 122-128, . (16/01961-2, 11/02937-4)
COSTA, JOAO PAULO R.; DE JESUS, RAPHAEL B.; OLIVEIRA, IVANNA M.; RESENDE, FLAVIO D.; SIQUEIRA, GUSTAVO R.; MALHEIROS, EUCLIDES B.. Does virginiamycin supplementation affect the metabolism and performance of Nellore bulls grazing under low and high gain rates?. ANIMAL SCIENCE JOURNAL, v. 89, n. 10, p. 1432-1441, . (13/10340-3, 16/01961-2)
SAMPAIO, RICARDO LINHARES; DE RESENDE, FLAVIO DUTRA; REIS, RICARDO ANDRADE; DE OLIVEIRA, IVANNA MORAES; CUSTODIO, LETICIA; FERNANDES, RODOLFO MACIEL; PAZDIORA, RAUL DIRCEU; SIQUEIRA, GUSTAVO REZENDE. The nutritional interrelationship between the growing and finishing phases in crossbred cattle raised in a tropical system. TROPICAL ANIMAL HEALTH AND PRODUCTION, v. 49, n. 5, p. 1015-1024, . (13/10340-3, 16/01961-2)
MOREIRA, ALINE D.; SIQUEIRA, GUSTAVO R.; LAGE, JOSIANE F.; BENATTI, JOAO MARCOS B.; MORETTI, MATHEUS H.; MIGUEL, GIULIANNA Z.; DE OLIVEIRA, IVANNA M.; DE RESENDE, FLAVIO D.. Castration methods in crossbred cattle raised on tropical pasture. ANIMAL PRODUCTION SCIENCE, v. 58, n. 7, p. 1307-1315, . (13/10340-3, 16/01961-2)
ALVES NETO, JOAO ALEXANDRINO; DE OLIVEIRA, IVANNA MORAES; MORETTI, MATHEUS HENRIQUE; GONCALVES, PALOMA HELENA; ALVES PRADO, MICHELE APARECIDA; DE RESENDE FERNANDES, JULIANO JOSE; DE RESENDE, FLAVIO DUTRA; SIQUEIRA, GUSTAVO REZENDE. Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture. SEMINA-CIENCIAS AGRARIAS, v. 39, n. 4, p. 1749-1758, . (16/01961-2, 11/02937-4, 13/10340-3)

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