Efficacy of Dietary Antioxidants on Broiler Oxidative Stress, Performance and Meat Quality: Science and Market

Abstract

Several production factors could exacerbate the biological formation of free radicals which, in turn, cause oxidative stress that impair the health, overall performance and meat quality of broiler chickens. Such factors could have a nutritional, pathological, physiological or environmental origin. The modern drive towards intensive commercial poultry production has elevated the exposure risk of broilers to these factors. In contrast, it has been demonstrated in many studies that dietary antioxidants could combat oxidative stress and improve broiler performance as well as meat quality. Interestingly, these efficacy claims have generated much attention from several feed additive companies which has spurred the development of certain commercial antioxidant products available in the global market. Information from recent studies suggests that both natural and synthetic antioxidants can be effective for augmenting broiler performance and meat quality particularly under conditions of oxidative stress. However, legislative restrictions may hinder the inclusion of high amounts of synthetic antioxidants required to achieve potency in oxidative-stressed broilers. The efficacy of dietary antioxidants depends on the age of the birds, dose and duration of supplementation. Moreover, supplementation of individual antioxidants on average seems to offer a better performance improvement than does a combination of antioxidants. Nonetheless, research efforts aimed at finding the right proportion of combining dietary antioxidants will offer tremendous economic benefits especially with the reduced use of costly synthetic vitamin E. This article gives further insights into research areas that could enhance the effective supplementation of antioxidants in broilers.

Effect of dietary supplementation with <i>Rhizopus oryzae</i> or <i>Chrysonilia crassa</i> on growth performance, blood profile, intestinal microbial population, and carcass traits in broilers exposed to heat stress

“…To date, a definite explanation for the lack of effect by dietary supplementations on growth performance in HS birds remains unclear. Salami et al (2015) reported that several factors may be responsible for the efficacy of dietary supplementations in broiler chickens under HS, including dose and duration of supplementations, diets, age of birds and the level of stress. In this study, HS was associated with the reduced weight of active organs such as heart and intestine.…”

Effects of Dietary Supplementation of Inorganic, Organic and Nano Selenium on Antioxidant Status of Giriraja Chicken

“…Edens and Sefton (2016), Dalia et al, (2017) and Bakhshalinejad et al, (2018) obtained significantly lesser malondialdehyde concentration for Selenium supplemented group than negative control group. Significant decrease in TBARS value as influenced by selenium yeast than sodium selenite was reported by Sevcikova et al, (2006), Jokic et al, (2009), Hosseini-Mansoub (2011), Taulescu et al, (2011), Boiago et al, (2014), Chen et al, (2014, Delles et al, (2014), Salami et al, (2015) and Ravindran and Elliott (2017). Significantly decreased TBARS value was recorded at 0.15mg/kg selenium supplementation by Hooge (2007) while TBARS value noted for 0.3 mg/kg organic selenium was similar to control group.…”

Review: In vivo and postmortem effects of feed antioxidants in livestock: a review of the implications on authorization of antioxidant feed additives

“…Several factors which could be of nutritional, pathological, physiological or environmental origins could induce oxidative stress and impair the performance of chickens Salami, Guinguina, Agboola, Omede, Agbonlahor and Tayyab (Salami et al, 2015). Consequently, dietary antioxidants have been shown to counteract the negative effects of oxidative stress in poultry and extensive reviews have been provided for broiler chickens (Fellenberg and Speisky, 2006;Salami et al, 2015).…”

“…Consequently, dietary antioxidants have been shown to counteract the negative effects of oxidative stress in poultry and extensive reviews have been provided for broiler chickens (Fellenberg and Speisky, 2006;Salami et al, 2015). Table 2 depicts the recommended dietary antioxidant nutrients in poultry.…”

“…In recent years, extensive scientific reviews have elucidated the in vivo and/or postmortem benefits of antioxidant nutrition in production animals (Fellenberg and Speisky, 2006;Celi and Chauhan, 2013;Castillo et al, 2013;Salami et al, 2015). This review is exclusively aimed at describing the roles of antioxidants as feed additives with respect to animal well-being and product quality.…”