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Phytogenic additives on broilers diet: performance, meat quality and oxidative stability on meat and blood

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Amanda da Lapa Silva
Total Authors: 1
Document type: Master's Dissertation
Press: Botucatu. 2015-03-03.
Institution: Universidade Estadual Paulista (Unesp). Faculdade de Medicina Veterinária e Zootecnia. Botucatu
Defense date:
Advisor: José Roberto Sartori; Vitor Barbosa Fascina

Recent studies have shown that the addition of natural antioxidants can improve meat quality and oxidative stability in vivo for being a potent free radical sequestrator, liposoluble with antioxidative functions, which favors oxidative stability in muscular tissues and oxidative processes in the organism overall. The present study investigated the influence of a phytogenic additive (PA) mixture composed of field rosemary, Chile Boldo and mate herb on zootechnic performance, diet metabolizability and oxidative stability of poultry meat stored in frozen state; blood enzymatic oxidative properties and serum metabolites. The experiment used 1320 poultry, males and females, of the Cobb® lineage, starting from 1 day of age, distributed in a completely randomized experimental outline with five treatments and eight repetitions, with 30 poultry per experimental unit for experiment I (warehouse) and 3 poultry per experimental unit for experiment II (metabolic cages). For both experiments, diet treatments followed: control diet (CD); control diet supplemented with performance enhancement antibiotic (PEA); PA5 – CD + 0.05% of phytogenic additives/ kg of diet; PA10 – CD + 0.10% of phytogenic additives/ kg of diet and PA15 – CD + 0.15% of phytogenic additives/ kg of diet. Supplementation of .05 and .10% of PA reduced (P=.001) shear force (SF) of breast meat in comparison with poultry fed with PEA supplemented diet. Antioxidant blood capacity (TAC) for the 100mg treatment with PA was smaller (P=0.034) in relation to other treatments. Addition of .05% of PA improved EMAn (P<0.001), and metabolizability of gross energy (P=.015) in comparison with other treatments. Effects of phytogenic supplementation have not been observed (P>.05) on performance, carcass and parts yield, oxidative stability of meat and blood, and metabolites of blood serum of poultry. Intake of phytogenic additive composed of Chile ... (AU)

FAPESP's process: 13/13589-2 - Effect of additives phytogenic in diet of broiler chickens on performance, meat quality and antioxidant activity
Grantee:Amanda da Lapa Silva
Support Opportunities: Scholarships in Brazil - Master