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Surai P.F.,Feed Food Ltd. | Surai P.F.,Scottish Agricultural College | Surai P.F.,Sumy National Agrarian University
World's Poultry Science Journal | Year: 2012

Among more than 750 known carotenoids, canthaxanthin (CX) has a special place as a carotenoid with proven antioxidant and other biologically-relevant functions. A great body of evidence indicates that CX possesses high antioxidant activity that was shown in various in vitro model systems as well as in animal experiments in vivo. Antioxidant defences of chicken eggs are based mainly on vitamin E and carotenoids and their concentrations in the egg yolk is dependent on their dietary provision. ηX is well absorbed from the feed and effectively transferred to the egg yolk and further to the developing embryo. Increased CX concentration in embryonic tissues is associated with increased resistance to oxidative stress. Since oxidative stress is an important element of increased embryonic mortality during the last week of incubation it is highly likely that dietary CX could support chicken viability after hatch. In well designed experiments, it was proven that CX dietary supplementation of the breeder's diet significantly increased anti-oxidative status in the egg yolk and newly hatched chicks and as a result hatching rate of chicken eggs was significantly increased. Taken together, the aforementioned results clearly indicate that CX provides a great deal of benefits for chicken eggs, embryos and chickens during early postnatal development. © 2012 World's Poultry Science Association.


Surai P.F.,Feed Food Ltd | Surai P.F.,Scottish Agricultural College | Surai P.F.,Sumy National Agrarian University
World's Poultry Science Journal | Year: 2012

Among more than 750 known carotenoids, canthaxanthin (CX) has a special place as a carotenoid with proven antioxidant and other biologically-relevant functions. A substantial body of evidence indicates that CX possesses high antioxidant activity which has been shown in various in vitro model systems as well as in animal experiments in vivo. It seems likely that the highest protective effects of CX are seen under various stress conditions. This compound may be considered as an important element of the integrated antioxidant system of various tissues in the body, including chicken embryo development. A possibility of the recycling of vitamin E by carotenoids, including CX, is of interest for further investigation. Taken together, the data analysed in the paper clearly indicated that CX could provide benefits for animals, including in eggs and embryos as well as for chickens during early postnatal development. In particular, CX is well absorbed from the diet and effectively transferred to the egg yolk and developing embryo. It possesses high antioxidant activity and participates in building an effective antioxidant system of the body. Copyright © 2012 World's Poultry Science Association.


Surai P.F.,Feed Food Ltd | Surai P.F.,Scottish Agricultural College | Surai P.F.,Sumy National Agrarian University
Journal of Animal Physiology and Animal Nutrition | Year: 2014

Animal feed provides a range of antioxidants that help the body building an integrated antioxidant system responsible for a prevention of damaging effects of free radicals and products of their metabolism. Vitamin E is considered to be the main chain-breaking antioxidant located in the membranes and effectively protecting them against lipid peroxidation. Recently, various polyphenol compounds, especially flavonoids, have received substantial attention because of their antioxidant activities in various in vitro systems. However, it was shown that flavonoid compounds are poorly absorbed in the gut and their concentrations in target tissues are too low to perform an effective antioxidant defences. The aim of the present paper is to review existing evidence about possible roles of various plant extracts provided with the diet in animal/poultry nutrition with a specific emphasis to their antioxidant activities. © 2013 Blackwell Verlag GmbH.


Fotina A.A.,Sumy National Agrarian University | Fisinin V.I.,All Russian Institute of Poultry Husbandry | Surai P.F.,Feed Food Ltd | Surai P.F.,Scottish Agricultural College | Surai P.F.,Odessa National Academy of Food Technologies
Bulgarian Journal of Agricultural Science | Year: 2013

For the majority of organisms on Earth, life without oxygen is impossible. Animals, plants and many microorganisms rely on oxygen for the efficient production of energy. However, the high oxygen concentration in the atmosphere is potentially toxic for living organisms. Recently free radical research has generated valuable information for further understanding not only detrimental, but also beneficial role of free radicals in cell signalling and other physiological processes. The benefit or harm of free radicals ultimately depends on the level of their production and efficiency of antioxidant defence. During evolution, living organisms have developed specific antioxidant protective mechanisms to deal with ROS. Therefore, the presence of natural antioxidants in living organisms is the major factor that enables their survival in an oxygen-rich environment. The protective antioxidant compounds are located in organelles, sub cellular compartments or the extra cellular space, enabling maximum cellular protection to occur. Natural antioxidants, including vitamin E, Se, carotenoids, carnitine and some others play important roles in chicken nutrition by maintaining antioxidant defences of their tissues. Optimal antioxidant supplementation is shown to be important to maintain high growth rate, immunocompetence and meat quality of growing broiler chicks. A new technology based on vita-gene concept has been developed to deal with various stresses by supplementing a complex mixture of antioxidants and other important elements via drinking water.


Surai P.F.,Feed Food. Ltd. | Surai P.F.,Szent Istvan University | Surai P.F.,Trakia University | Surai P.F.,Sumy National Agrarian University | And 2 more authors.
Animal Feed Science and Technology | Year: 2014

Selenium (Se) is shown to be an essential element for poultry nutrition and a great deal of information has been accumulated for the last 20 years indicating that dietary form of Se is a major determinant of its efficiency. Generally speaking, there are two major Se sources for poultry, namely inorganic selenium (mainly selenite or selenate) and organic selenium in the form of selenomethionine (SeMet; mainly as Se-Yeast or SeMet preparations). In this review two main areas are considered in relation to the Se nutrition of breeders. Firstly, it is Se important roles in the maintenance of semen quality and optimal Se status of poultry males and Se is considered to be an important factor in ensuring the fertility of breeding stock. Secondly, Se status of the eggs from breeding birds is of great importance for the maintenance of the antioxidant system of the developing embryo. It is generally accepted that the hatching process is an oxidative stress and improvement in antioxidant defences of the embryo can increase hatchability. It is quite clear that the roles of Se in poultry nutrition and reproduction need new consideration in light of our recent knowledge on the molecular mechanisms of Se action at the cellular and sub-cellular levels. In particular, the discovery and characterisation of a range of new selenoproteins and a better understanding of the relationships between different antioxidants, as important parts of integrated antioxidant system with possibilities for antioxidant recycling in vivo, have yielded new insights in this area. In particular, it should be mentioned that increased levels of Se supplementation are not always beneficial, since selenoprotein synthesis is under the gene control and it reflects the need in these active molecules to deal with various stresses. However, to give a body a chance to affectively respond to environmental challenges by modulating selenoprotein synthesis there should be enough Se reserves available and this an ability of building Se reserves in the body is considered to be the main point in advantages of organic selenium in poultry and farm animal nutrition. A comprehensive analysis of the effects of various forms of dietary Se on its egg concentration, its transfer to the embryonic tissues and physiological consequences of the improved Se status of the progeny chicks are considered. © 2014 Elsevier B.V.

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