Functional oils in diets with high proportion of concentrate: impact on health and performance of feedlot lambs

• Grant number: 18/05490-0
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2018
• End date: November 30, 2019
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Production
• Principal Investigator: Paulo Roberto Leme
• Grantee: Paulo Roberto Leme
• Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
• Associated researchers: Sarita Bonagurio Gallo ; Saulo da Luz e Silva
• Associated scholarship(s): 18/16436-6 - Functional oils in diets with high proportion of concentrate: impact on health and performance of feedlot lambs, BP.TT

Abstract

The aim of this study is to evaluate the influence of functional oils as an additive in diets with high concentrate on oxidative stress, performance, ruminal health, carcass and lamb meat characteristics. Thirty two crossbreed Dorper X Santa Inês weaned lambs with an initial live weight of 18 kg will be used in a randomized block design divided into four treatments: control (CTL), without addition of antioxidants, treatment with addition of functional oils (OF), where will receive a control diet with addition of functional oils (0.5 g/kg DM), selenium and vitamin E (SeE), consisting of the control diet with selenium (Se) and vitamin E (0.50 mg/kg and 100 IU/kg, respectively) and treatment with both additives (OF + SeE) at the doses already mentioned). The animals will be housed in indoor cages subject to a diet composed of coastcross grass hay (10%) and concentrate (90%) and will have the weight measured every 14 days. Blood samples will be collected for the determination of oxidative stress. After 60 days of confinement, the animals will be slaughtered and the incidence of ruminitis and papilla morphology will be evaluated. Characteristics such as carcass yield, pH, subcutaneous fat thickness, color, softness, shelf life and TBARS will be measured and after deboning. The results will be analyzed through the SAS program version 9.0 by means comparison. (AU)

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)

ALVES BEZERRA, HELENA VIEL; MACEDO BUARQUE, VICENTE LUIZ; BERMUDES SILVA, LUCAS SANTOS; PEDROSO LEME, PAULO ROBERTO; CENTOLA VIDAL, ANA MARIA; NAKASHIMA VAZ, ANDREIA CRISTINA; GALLO, SARITA BONAGURIO; SILVA, SAULO LUZ; LEME, PAULO ROBERTO. Effect of Castor and Cashew Nut Shell Oils, Selenium and Vitamin E as Antioxidants on the Health and Meat Stability of Lambs Fed a High-Concentrate Diet. ANTIOXIDANTS, v. 9, n. 12, DEC 2020. (18/05490-0)