Intake and digestibility of diets supplemented with or without phosphorus Nelore cattle feedlot

• Grant number: 15/05744-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): June 01, 2015
• Effective date (End): July 17, 2016
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Juliana Duarte Messana
• Grantee: Laís de Oliveira Lima
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Associated scholarship(s): 15/20253-6 - Effect of intake and digestibility of the diet of cattle at different feeding treatment during stockering and finishing periods on carcass traits and meat quality, BE.EP.IC

Abstract

Dietary phosphorus requirements for cattle feedlot may be lower than recommended by the National Research Council (NRC). In addition, excess phosphorus intake is mainly excreted in the feces and urine of animals, accumulates in the soil and can cause eutrophication of water resources, and bring economic losses due to wastage of mineral resource. There are no scientific evidence from a nutritional point of view to justify the use of phosphorous supplementation for Nellore beef cattle feedlot fed diets with high proportion of concentrate, especially on the intake and digestibility of these diets. Being a non-renewable resource; for its high cost and its environmental contamination capacity, this study makes it necessary for the effects related to the phosphorous supplementation in Brazilian constraints are highlighted. Thus, this study aim Nelore cattle fed in feedlot with high grain diets with or without phosphoric supplementation to evaluate the intake and digestibility of diets. (AU)