Use of tannins in suplements with diferent rates of protein degradation in growing Nellore cattle in the dry season

• Grant number: 18/00885-6
• Support Opportunities: Scholarships in Brazil - Master
• Start date: April 01, 2018
• End date: July 31, 2019
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Flávio Dutra de Resende
• Grantee: Iorrano Andrade Cidrini
• Host Institution: Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). São Paulo , SP, Brazil
• Associated scholarship(s): 18/18400-9 - Reducing enteric methane emissions from ruminants fed forage based diets, BE.EP.MS

Abstract

The aim of this study was to evaluate the effect of the use of tannin extracts (SilvaFeed Bypro®) on protein-energy supplements with different rates of protein degradation on animal performance, ruminal bacterial diversity, ruminal and blood parameters in Nellore cattle, in growing phase during the dry season. The study will be divided into two experiments (1 - evaluation of animal performance and 2 - evaluation of ruminal bacterial diversity and ruminal and blood parameters). The evaluations will be carried out concurrently from 07/2017 to 11/2017 (14 days of adaptation and 4 periods of 28 days), and the animals were kept in pasture of Brachiaria brizantha cv. Marandu. The energetic protein supplement (28% crude protein) will be supplied daily in the amount of 3 g / kg body weight. In experiment 1, 64 Nellore cattle (22 months of age and average body weight of 300 kg - uncastrated males) will be distributed in 16 pens (4 padock per treatment, 4 animals per padock) in complete blocks at random (weight as blocking) in a 2 × 2 factorial. Factors will include 1) low and high protein degradation rate and 2) presence or absence of tannin extracts (SilvaFeed Bypro® - blend of condensed and hydrolyzed tannins). In Experiment 2, eight Nellore cattle (22 months of age and mean body weight of 300 kg - castrated males), rumen fistulated, will be randomly assigned to a 4 × 4 double Latin square. Statistical analyzes will be performed using PROC MIXED SAS. The level of significance will be declared at 5% probability and trend explored from 5 to 10%. (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)

CIDRINI, IORRANO A.; GRANJA-SALCEDO, YURY T.; PRADOS, LAURA F.; KISHI, LUCIANO T.; SIQUEIRA, GUSTAVO R.; RESENDE, FLAVIO D.. Effect of tannin extract associated with two levels of non-protein nitrogen in the supplement on performance, ruminal parameters, and microbial diversity of grazing Nellore cattle during the growing phase at dry season. ANIMAL FEED SCIENCE AND TECHNOLOGY, v. 286, p. 15-pg., 2022-04-01. (18/20176-0, 17/50339-5, 18/00885-6)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

CIDRINI, Iorrano Andrade. Uso de extratos de taninos em suplementos com diferentes níveis de inclusão de ureia na recria de bovinos nelore no período da seca. 2019. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.