Effect of stress on performance and gastrointestinal barrier function

• Grant number: 18/01287-5
• Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
• Start date: March 31, 2018
• End date: July 30, 2018
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Otávio Rodrigues Machado Neto
• Grantee: Luiz Antonio Fogaça
• Supervisor: Jon Schoonmaker
• Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
• Institution abroad: Purdue University, United States
• Associated to the scholarship: 17/13296-6 - Levels of distiller grains in diets for feedlot cattle: intake and performance, BP.IC

Abstract

The objective of this trial is evaluate the effects of stress on performance and gastrointestinal barrier function in beef cattle. Animals used in this trial will be fed during 56 days and will receive a high energy diet. Over the period in feedlot will be collected daily data of dry matter intake, average daily gain, and feed efficiency, and animal will be weighed every two weeks. The gastrointestinal barrier will be challenged through a protocol transport in a truck. The digestibility marker used will be Chromium-EDTA. The hypothesis is that animals that suffer stress (climate, nutritional, psychological) have a disorder in the permeability of the gastrointestinal tract barrier and because of that, is possible that occur a passage of undesirable compounds of the intestinal lumen into the cells coming the entail health problems and a low quality of beef. (AU)