Influence of sunflower oil, selenium and vitamin e inclusion on and feed efficiency ruminal parameters of Nellore

• Grant number: 12/13598-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: September 01, 2012
• End date: June 30, 2013
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Production
• Principal Investigator: Arlindo Saran Netto
• Grantee: Amanda Cristine Horacio
• Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil

Abstract

Sunflower oil is an excellent source of linoleic acid and may be beneficial to meat quality. Selenium and vitamin E are important antioxidants, with the synergistic effect can improve animal performance. Therefore, the objective of this research is to examine the effect of inclusion of sunflower oil, selenium and vitamin E in the diet of feedlot cattle on ruminal and feed efficiency. On this way, the objective of this study is to determine influence of inclusion of canola oil, selenium and vitamin E on performance and ruminal parameters of Nellore. For this, we will use 48 Nellore, divided into four groups with 12 animals per treatment as described: control (C): Basal Diet, Antioxidants Control + (C + A) basal diet supplemented with 5 mg Se / kg MS, in the form of organic selenium and vitamin E 500UI / kg DM, Control + oil (C + O): basal diet supplemented with 3% sunflower oil / kg DM, oil + Antioxidants (O + A ): basal diet supplemented with 2.5 mg Se / kg of DM in the form of selenium, vitamin E and 500UI 3% sunflower oil / kg DM. The dry matter intake is measured daily and will be held 28 days weighed to calculate feed efficiency by periods. On the day of slaughter will be collected for determination of ruminal pH, VFA, ammonia-N and protozoa. The statistic will be completely randomized design with 12 replicates per treatment. Data will be analyzed by the SAS statistical package (SAS Institute Inc., 2000) using analysis of variance using PROC GLM and PROC MIXED. The averages are compared by means of contrasts with the 5% level of significance. (AU)