Dietary energy source affecting fat deposition mechanism, muscle fiber metabolic, and overall meat quality

Author:

Al-Hijazeen M.,Al-Rabadi G.

Abstract

A study was conducted to investigate the effect of two dietary energy sources, soy bean oil, and sucrose on regulatory mechanisms of meat preservation. Twenty one day-old Hubbard commercial broilers were randomly allocated into two dietary treatment groups with six replicates per treatment, and four broilers per replicate. All birds were coded for the influence of energy source: fat based diet (FD), and sugar based diet (SD). Formulated grower diets were isonitrogenous and isocaloric. The chickens were slaughtered and then boneless, skinless ground chicken tight meat was prepared. Both raw and cooked meats were analyzed for lipid and protein oxidation, and sensory panel evaluation. In addition, meat from the small muscles of the raw thigh was used to evaluate other meat quality characteristics. Proximate analyses showed no significant differences between both dietary treatments on protein, ash and moisture percentage values. Meat samples of the group that was fed FD showed higher significant values of both TBARS and total carbonyl at day 7 of storage time. However, samples of the second group (Fed SD) showed lower values of both ultimate pH and water separation % using raw thigh meat. The effect of FD treatment on the meat composition appeared clearly especially on fat percentage content. In addition, meat samples obtained from chickens fed SD showed better significant values of the overall acceptability attribute. According to the current findings, sucrose could be an excellent alternative to oil in dietary broilers which improved the meat preservation bio-system, and post-mortem storage stability. 

Publisher

Oles Honchar Dnipropetrovsk National University

Subject

General Engineering

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