Dietary supplementation of mannanoligosaccharides to turkey hens on their growth performance and antioxidant status in the blood

Abstract

________________________________________________________________________________ AbstractThe research focused on the effect of a prebiotic additive, mannanoligosaccharides (Bio-Mos), in the diet of turkey hens on their growth performance and measurements of pro-oxidation and antioxidation systems in their blood. The investigation was performed on 240 six-week-old turkey hens of the heavy Big-6 breed, randomly divided into two groups. Group I was the control group, whereas the birds in group II were fed the control diet with a 0.5% addition of Bio-Mos. Bio-Mos did not increase the concentration of lipid peroxidation products, peroxide H 2 O 2 and malone dialdehyde. However, it contributed to the increased concentration of some antioxidation parameters such as vitamin C, iron and zinc in the blood. Moreover, it led to an improved growth performance. The study suggested that mannanoligosaccharides can be used in practice as a dietary additive for turkeys, stimulating the mechanisms of the birds' antioxidation defence and improving their growth performance. ________________________________________________________________________________

Redox Status, Biochemical Parameters and Mineral Elements Content in Blood of Turkey Hens Fed a Diet Supplemented with Yarrowia lipolytica Yeast and Two Bacillus Species

“…Higher levels of SOD activity, on the other hand (observed mainly in the groups receiving the Yarrowia lipolytica), were correlated with an increase in the concentration of copper ions, which are present in its catalytic centre and react with superoxide anion radical [27], and also with an increased amount of zinc ions, which stabilize the tertiary structure of the enzyme [21]. This may be confirmed by the research of Ognik and Krauze [23], in which an increase in the content of divalent micronutrients in turkey blood plasma was accompanied by intensification of pro-oxidative processes. The combined effect of SOD and CAT leads to the safe removal of lipid peroxides, which was reflected in reduced concentration of lipid peroxidation products such as malondialdehyde.…”

“…The relationships observed in the present study are consistent with reports by Milinkovic-Tur et al [22], who noted increased SOD and CAT activity in the myocardium of broiler chickens receiving feed containing yeast. Moreover, Ognik and Krauze [23] have shown that mannan oligosaccharides found in the yeast cell wall stimulate antioxidant protection mechanisms and improve the growth rate of birds. This indicates that yeast can protect the gastrointestinal tract by other means than removing unwanted bacteria.…”

The effect of yeast Yarrowia lipolytica on the antioxidant indices and macro-and microelements in blood plasma of turkey hens

“…In the present study a significant decrease in vitamin C content was noted only in the group with 3% YL, so it was unlikely to be the effect of the yeast, as in the group receiving double this amount of yeast a similar correlation was not observed. The vitamin C concentrations observed correspond to the values noted in our previous research (Ognik and Krauze 2012) and by other authors (Gebert et al 2006).…”

“…Their optimal concentration in the blood plasma ensures the proper functioning of enzymatic centres (Kleczkowski et al 2004). A decrease in the concentration of these minerals may suggest that they are being utilized in the organism for antioxidant defence, while an increase may indicate that the organism is free of stress (Ognik and Krauze 2012).…”

“…In addition to low-molecular-weight antioxidants, enzymes play a fundamental role in antioxidant defence of the organism. The most important enzymes with antioxidant activity are superoxide dismutase, glutathione peroxidase and catalase (Ognik and Krauze 2012). The action of these enzymes can be enhanced by feed additives such as herbs, probiotics, prebiotics or nutrient yeast, to which immunostimulatory functions are attributed (Świątkiewicz and Koreleski 2007, Cakiroglu et al 2010, Przysiecki et al 2010, Aluwong et al 2013).…”