Fatty acids on the performance and immune responses of Nellore feedlot cattle

Author(s)

Robson Sfaciotti Barducci ; Luís Marcelo Nave Sarti ; Danilo Domingues Millen ; Thaila Cristina Putarov ; Felipe Azevedo Ribeiro ; Maria Caroline da Silva Franzói ; Carolina Floret da Costa ; Cyntia Ludovico Martins ; Mário De Beni Arrigoni

• Document type: Journal article
• Source: Pesquisa Agropecuária Brasileira; v. 50, n. 6, p. 499-509, Jun. 2015.

Abstract

The objective of this work was to evaluate the addition of natural and protected lipid sources on the performance and immune responses of Nelore cattle feedlot. A completely randomized design was carried out with repeated measures in time and three treatments, which were: without additional source of lipid (CONTR); with natural lipid source (cottonseed cake) (GDESP); and with rumen protected lipid source, rich in polyunsaturated fatty acids (GPROT). The study was divided into two phases: preconditioning and feedlot of 120 noncastrated Nelore cattle (24 pens, 5 animals per pen, and 8 pens per treatment). The GDESP treatment provided greater weight gain in the preconditioning phase, and, during the feedlot period, there were no differences among treatments for performance, carcass traits, and disease incidence. The highest plasma concentrations of TNFα, IL-1β, haptoglobin, and ceruloplasmin occurred in the CONTR treatment. Lipid supplementation to the diet, regardless of the source, improves the performance and enhances the immunological system of confined Nellore cattle. (AU)

• FAPESP's process: 12/00884-3 - Sources of polyunsaturated fatty acids on performance and immunological responses of feedlot Nellore cattle
• Grantee: Mário de Beni Arrigoni
• Support type: Regular Research Grants
• FAPESP's process: 11/01715-8 - Sources of polyunsaturated fatty acids on performance and immunological responses of feedlot Nellore cattle
• Grantee: Luís Marcelo Nave Sarti
• Support type: Scholarships in Brazil - Doctorate