Impacts of polyphenols on laying hens' productivity and egg quality: A review

Abstract

There has been a rapid increase in the world's output of main poultry products (meat and eggs). This reflects customer desire for these high‐quality and safe products and the comparatively low price. Recently, natural feed additives, plants and products have been increasingly popular in the poultry and livestock industries to maintain and improve their health and production. Polyphenols are a type of micronutrient that is plentiful in our diet. They are phytochemicals that have health benefits, notably cardiovascular, cognitive function, antioxidant, anti‐mutagenic, anti‐inflammatory, antistress, anti‐tumour, anti‐pathogen, detoxification, growth‐promoting and immunomodulating activities. On the other hand, excessive polyphenol levels have an unclear and sometimes negative impact on gastrointestinal tract health, nutrient digestion, digestive enzyme activity, vitamin, mineral absorption, laying hens performance and egg quality. As a result, this review illuminated polyphenols' various sources, classifications, biological activities, potential usage restrictions and effects on poultry, layer productivity and egg external and internal quality.

Ecological prevalence, genetic diversity, and multidrug resistance of Salmonella enteritidis recovered from broiler and layer chicken farms

“…As has been widely reported by Abd El-Hack et al (2022c) , MDR is a major threat to human health, the MARI in the current study ranged from 0.27 to 0.77 for the Salmonella serovars studied. These findings are consistent with those found by Zhao et al (2017) and Kim (2021) , but some researchers have found a MARI as high as 0.91 ( Siddique et al, 2021 ).…”

Effects of garcinol supplementation on the performance, egg quality, and intestinal health of laying hens in the late laying period

“…To better understand the favorable effects of garcinol, further analysis was conducted on the gut microbiota since its interactions with the gut play a crucial role in the maintenance of the physiological function of host health ( Lynch and Hsiao, 2019 ; Abd El-Hack et al, 2023 ). Emerging evidence demonstrates that the diversity of the intestinal microbiota of chickens is largely influenced by age and diet ( Videnska et al, 2014 ).…”

Consequences of dietary cinnamon and ginger oils supplementation on blood biochemical parameters, oxidative status, and tissue histomorphology of growing Japanese quails

“…According to Salem et al (2022) , there is growing pressure on the poultry business to create superior products in large quantities for consumers. Many years ago, antimicrobial feed additives were utilized as antibiotics to boost the production of meat and eggs by controlling and preventing harmful microbes throughout the digestive system ( Abd El-Hack et al, 2022b ). Antibiotic used in chicken production has become banned because of residual antibiotics in meat products ( Youssef et al, 2018 ; Jammoul and El Darra, 2019 ) and the emergence of antibiotic-resistant microbes in humans ( Chandrakar et al, 2023 ).…”