Effects of organically-complexed minerals on meat quality in chickens

Abstract

The impact of combined lower concentrations of organically-complexed versus inorganic copper, zinc and manganese on meat quality in chickens was investigated. A total of 200 male broiler chicks (Ross-308), 1-d-old and weighing approximately 40 g, were divided into 4 groups comprising three experimental groups and one control group, with each consisting of 50 chicks. All groups were also divided into 5 subgroups, with each containing 10 broiler chicks. All birds were given a starter diet from d 1 to d 21, and a grower diet from d 22 to d 49. The diets were formulated according to the NRC recommendations. The mineral contents of the control diet were supplied using a standard inorganic mineral premix (containing 8 mg Cu as CuSO₄, 40 mg Zn as ZnSO₄, and 60 mg Mn as MnO, per kg). For the experimental diets, a mineral premix was prepared using organically complexed forms of those minerals at 1/3 (L1), 2/3 (L2) and 3/3 (L3) proportions. After slaughtering and evisceration, the carcases were stored at 3 ± 0·5°C for 10-12 h, and then the breast fillets removed from the carcases, and stored in a deep-freezer (-86°C) until analysis (for 30 d). For analyses, the breast muscles were then thawed at 4-6°C for 24 h. 6. The concentration of organically complexed mineral in the diet had no statistically significant effect on pH values of breast fillets. Treatments significantly affected the Thiobarbituric Acid Reactive Substances (TBARS) values. Lightness (L* value) of the fillet from broilers fed the diet containing inorganic minerals was significantly lower than that for broilers fed on the diets containing organically complexed minerals. The redness (a* value) and Chroma (C* value) significantly decreased while Hues (H* value) were higher in the fillet from broilers fed organically complexed minerals compared with those fed inorganic minerals. The yellowness (b* value) was not changed by dietary treatment.

Zinc and Copper with New Triazine Hydrazone Ligand: Two Novel Organic Complexes Enhanced Expression of Peptide Growth Factors and Cytokine Genes in Weaned V-Line Rabbit

“…Statistically, the pHU and WHC were not significantly influenced by combined Zn/Cu complexes, yet WHC values were still higher in the tested treatments than in the control. This was partially in accordance with the results of [55], who used different dietary Zn and Cu forms in poultry. Additionally, drip loss 24h and drip loss 48h percentages generated from supplemented rabbits were close to those in the controls and seems to be rather constant (p > 0.05).…”

Effect of organic zinc supplementation on growth, metabolic profile and antioxidant status of Ganjam sheep

“…Zinc has been found to inhibit endogenous as well as exogenous lipid peroxidation in both in vivo and in vitro conditions (Chvapil et al, 1973) and thus increased SOD activity there by leading to increased catalase concentration (Clemen and Waller, 1987). Similar to our findings Aksu et al (2011) reported that supplementation of Zn-methionine decreased lipid peroxidation in the chickens by lowering the plasma levels of MDA.…”

Antioxidant Enzyme Activity and Malondialdehyde Concentration on Broiler Fed Contain Lauric Acid and Areca vestiaria Giseke

“…The sequence of chicken response to MDA content of meat from highest to lowest was found in treatment combination of LA feed without supplementation, LA supplemented by AV at a dose of 625 mg.kg MDA is one of the indicators of lipid peroxidation in the body which is often used in association with oxidative stress (Aksu et al, 2011). The compound can cause damage to cell components, such as lipids, proteins, and nucleic acids.…”