The effects of bismuth subsalicylate in combination with nitrate on in vivo ruminal fermentation, metabolism, microbial ecosystem, and enteric CH4 production when feeding a low-quality forage diet

• Grant number: 16/22354-7
• Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
• Start date: December 03, 2016
• End date: March 02, 2017
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Danilo Domingues Millen
• Grantee: Sophia Cattleya Dondé
• Supervisor: Nicolas Dilorenzo
• Host Institution: Faculdade de Ciências Agrárias e Tecnológicas. Universidade Estadual Paulista (UNESP). Campus de Dracena. Dracena , SP, Brazil
• Institution abroad: University of Florida, Gainesville (UF), United States
• Associated to the scholarship: 16/09234-2 - Rumen epithelium cell proliferation of feedlot Nellore cattle fed different feed additives, BP.IC

Abstract

Ten ruminally cannulated Angus crossbred steers, from the NFREC herd in Marianna, FL, will be used in a duplicated 5 × 5 Latin square design with 5 periods and a 2 × 2 + 1 factorial arrangement of treatments to determine the effects of BSS and nitrate supplementation on ruminal fermentation and metabolism. Factors will include two doses of BSS (0.0 and 0.33%) and two doses of nitrate (0.0 and 1.2%) all chosen from our preliminary studies conducted using in vitro batch culture incubations. Dietary treatments within the factorial arrangement will be formulated to contain the same amount of RDP, based on the NPN provided by 1.2% nitrate inclusion in the diet DM,but using urea instead, while the negative control ("+1" treatment) will have no NPN added. (AU)