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Supplementation of Nellore growing cattle grazing in different intensities on rumen metabolic and nutritional parameters

Grant number: 14/21138-3
Support type:Scholarships in Brazil - Master
Effective date (Start): December 01, 2014
Effective date (End): February 29, 2016
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Production
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Ricardo Andrade Reis
Grantee:Lutti Maneck Delevatti
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

The beef cattle industry in Brazil is based on the use of forage as a primary feed source. However seasonal changes reduce the quality and quantity, decreasing animal performance even in the rainy season. Thus, supplementation of the diet on pasture could be an important strategy to improve performance and reducing age of slaughter. The objective of this experiment will be to evaluate the intake, diet digestibility, ruminal fermentation and microbial protein synthesis of growing cannulated cattle supplemented in different grazing intensities during the rainy season. The area will be divided in 18 paddocks of Brachiaria brizantha grazed at 15; 25 and 35 cm in continuous stocking with variable stocking rate. The supplementation strategies will be: multiple supplements in the amount of 0.3% to 0.6% of Body Weight (BW) for the animals in the pasture 15 cm; 0.1% and 0.3% of the BW in the pastures of 25 cm; and mineral mixture and 0.1% of the BW in the pastures of 35 cm. The variables evaluated will be:intake and digestibility of forage and supplement, microbial protein synthesis, dynamic degradation of Neutral Detergent Fiber (NDF), nitrogen balance and ruminal diet of animals to each corresponding system. The experimental design used is double incomplete Latin square with twelve cannulated animals, six treatments and four experimental periods in the rainy season. When significant, the means between treatments will be compared using Tukey. Significance will be declared at P<0.05. (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)
DELEVATTI, LUTTI MANECK; ROMANZINI, ELIEDER PRATES; WERNER KOSCHECK, JEFFERSON FABIANO; DA ROSS DE ARAUJO, TIAGO LUIS; RENESTO, DIEGO MONTEIRA; FERRARI, ADRIANA CRISTINA; BARBERO, RONDINELI PAVEZZI; MULLINIKS, JOHN TRAVIS; REIS, RICARDO ANDRADE. Forage management intensification and supplementation strategy: Intake and metabolic parameters on beef cattle production. ANIMAL FEED SCIENCE AND TECHNOLOGY, v. 247, p. 74-82, JAN 2019. Web of Science Citations: 0.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
DELEVATTI, Lutti Maneck. Parâmetros nutricionais e metabólicos de novilhos nelore recriados em pastos de diferentes alturas e doses de suplemento. 2016. Master's Dissertation - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências Agrárias e Veterinárias..

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