CRUDE GLYCERIN ASSOCIATED WITH VIRGINIAMICYN IN HIGH-CONCENTRATE DIETS ON PERFORMANCE AND RUMINAL FERMENTATION PARAMETERS OF NELLORE STEERS

• Grant number: 15/03918-4
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): October 01, 2015
• Effective date (End): February 28, 2018
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal researcher: Telma Teresinha Berchielli
• Grantee: Pablo de Souza Castagnino
• Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Associated scholarship(s): 16/18302-1 - Standardization of primers from bacteria related to acidosis by Real Time PCR and rumen microbial biodiversity analysis, BE.EP.DR

Abstract

Brazilian beef production from feedlots has increased in recent years with market demands on efficiency and meat quality. In addition to system efficiency, as ingredient costs are high, there is concern about the risk of metabolic disorders (ex. Acidosis) caused by high intake of carbohydrates with faster rate of degradation. The use of crude glycerin associated with virginiamycin could enhance lactate utilization by bacteria Megasphaera elsdenii and Selenomonas ruminantium and to reduce the production of lactic acid from Streptococcus bovis and Lactobacilli, which may attenuate the risk of acidosis and increase animal performance. The objective of this study will be to evaluate the effects of glycerin ( 0 or 10% of DM) associated with virgniamicyn ( 0 or 25 ppm of DM) on the digestibility, ruminal fermentation, changes in ruminal microbiota using molecular biotechnology, microbial efficiency, weight gain, blood parameters, growth performance, carcass and meat quality of beef cattle finished in feedlot. Data of animal performance (40 animals) will be analyzed in a completely randomized design using mixed models in a factorial arrangement 2 X 2, crude glycerin and virginiamycin. Ruminal parameters and intestinal flow will be analyzed in a replicate 4x 4 Latin square and the model will include fixed effect of treatment and random effects of steer and period. Data will be submitted to analysis of variance using the PROC MIXED procedure of SAS (version 9.2).

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)

CASTAGNINO, PABLO S.; DALLANTONIA, ERICK E.; FIORENTINI, GIOVANI; SAN VITO, ELIAS; MESSANA, JULIANA D.; LIMA, LAIS O.; SIMIONI, TIAGO A.; BERCHIELLI, TELMA T.. Changes in ruminal fermentation and microbial population of feedlot Nellore cattle fed crude glycerin and virginiamycin. ANIMAL FEED SCIENCE AND TECHNOLOGY, v. 242, p. 69-76, AUG 2018. (15/03918-4)

ROMANZINI, ELIEDER PRATES; DA SILVA SOBRINHO, AMERICO GARCIA; VALENCA, ROBERTA DE LIMA; BORGHI, THIAGO HENRIQUE; MERLIM, FERNANDA DE ALMEIDA; DE ANDRADE, NOMAIACI; BRANCACCI LOPES ZEOLA, NIVEA MARIA; CASTAGNINO, PABLO DE SOUZA; BERNARDES, PRISCILA ARRIGUCCI. Biodiesel Co-products Modified the Rumen Parameters of Feedlot Lambs but did Not Change Methane Production In Vitro. Acta Scientiae Veterinariae, v. 48, APR 22 2020. (15/03918-4, 12/25250-7, 13/09364-5, 13/23495-5)

Academic Publications

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

CASTAGNINO, Pablo de Souza. Performance, carcass traits and rumen fermentation from feedlot nellore cattle fed crude glycerin and virginiamycin. 2018. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.