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Shelf life and lipid profile of Nellore cattle meat, supplemented with different sources of fat

Grant number: 17/01126-9
Support type:Scholarships in Brazil - Master
Effective date (Start): April 01, 2017
Effective date (End): October 15, 2018
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Mário de Beni Arrigoni
Grantee:Ramon Argentini Rizzieri
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
Associated scholarship(s):17/21115-1 - Evaluation of the lipid profile from cross-bred Holstein beef, BE.EP.MS

Abstract

The inclusion of lipid rich sources in feedlot diets is a way to increase energy density, maximize meat production and quality. The objective of the present study will be the evaluation of the meat quality of confined Nellore cattle fed diets containing natural lipids and protected from ruminal degradation by means of analysis of deposition of muscular and adipose tissue by ultrasound, centesimal composition, shelf life , Bars index, total lipids, fatty acid profile and sensory panel. The study will be conducted in the experimental confinement of the Faculty of Veterinary Medicine and Animal Science, UNESP - Botucatu. Nelore male bovines will be used, with an average of 22 months and initial mean live weight of 400 kg, from grazing system. The experimental design will be in randomized blocks divided into four treatments: T1, with addition of natural sources of lipids, from cotton seed and corn germ; T2, with inclusion of lipids protected from rumen degradation from soybean oil; T3, with the inclusion of essential fatty acids protected from ruminal degradation and T4, with the addition of natural sources of lipids from cottonseed and corn germ and essential fatty acids protected from rumen degradation. Each treatment will consist of six bays (4 animals / bay), which are considered the experimental units for the study. The animals will receive adaptation diet for 10 days. From the 11th day of the experimental period until the 30th the animals will receive a growth ration, and from 31 ° to the slaughter the animals will receive the finishing ration. Animals will be slaughtered after 110 days of study. Muscle and adipose tissue deposition parameters will be evaluated by ultrasound, centesimal composition, shelf life, bars index, total lipids, fatty acid profile and sensorial panel of Longissimus dorsi muscle samples. The data will be submitted to analysis of variance and analyzed using the MIXED procedure of the SAS software. A Tukey test will be performed to compare the means. Values of P <0.05 will be considered significant. (AU)

Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
RIZZIERI, Ramon Argentini. Vida de prateleira e perfil de lipídios da carne de bovinos Nelore confinados, suplementados com diferentes fontes de gordura. 2018. Master's Dissertation - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Medicina Veterinária e Zootecnia..

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