Michele De Marco

I. INTRODUCTIONBroiler breeders require adequate levels of nutrients to reach their genetic potential in terms of productive and reproductive performance, and to transfer essential nutrients from eggs to embryo for the development of chicks (Rajashree et al., 2014).It is known that oxidative stress impairs a breeder’s performance (particularly related to aging) and embryo development. This s ...

This study investigated whether hydroxy-selenomethionine (OH-SeMet) improves broiler oxidative stress response to a greater extent than sodium selenite (SS) or seleno-yeast (SY) under environmental stress. Day-old male Cobb 500 broilers (12 cages/diet, 9 broilers/cage) were fed a selenium (Se)-deficient diet (0.047 mg Se/kg) supplemented with SS, SY or OHSeMet at 0.3 mg Se/kg for 42 days. Animals ...

The induction of oxidative stress by heat exposure, as well as the relationship between selenium (Se), selenoproteins and oxidative stress, is well described in the scientific literature (Habibian et al.,2015). Zhao et al. (2017) showed that hydroxy-selenomethionine (OH-SeMet) differently affected the expression of the selenogenome as compared to sodium selenite (SS). Hence, it was hypothesised th ...

Due to the world’s population increase, egg production is expected to develop rapidly and, to increase egg production, the goal is to enhance laying persistency while maintaining egg quality (Bain et al., 2016). As they age, laying hens gradually decrease productivity and eggshell quality (Dunn, 2013). Oxidative stress is an important factor of ageing and selenium (Se), being an essential mi ...

A balanced diet is key for human health promotion. Among essential nutrients Selenium is shown to be deficient in many countries worldwide. In animals as well as in humans, Selenium deficiency is associated with a compromised immunity and increased susceptibility to various diseases including the recent epidemic caused by COVID 19. Production of Se-enriched eggs, meat and milk could be an importan ...