Effect of Se sources and concentrations on performance, antioxidant defense, and functional egg quality of laying Japanese quail (Coturnix japonica)

Effects of replacing Na selenite in laying hen feed with selenized glucose on production performance, egg quality, egg selenium content, microbial population, immunological response, antioxidant enzymes, and fatty acid composition

“…SeGlu is currently not commonly used in animal production. These findings are consistent with those of Nassef et al (2020) , who discovered that feeding 0.4 mg selenomethionine/kg to laying quails improved egg production. Another study found that feeding laying hens inorganic Se and Se yeast had no influence on the number of defective eggs ( Muhammad et al, 2021 ).…”

Effects of different inorganic selenium levels in laying quails (Coturnix coturnix Japonica) diets on performance, egg quality, and serum biochemical parameters

“…These findings agree with those of previous authors (28)(29)(30) who reported that dietary sodium selenite did not affect egg production, egg weight or egg mass in laying hens. Nassef et al (24) found similar results for performance parameters, except for egg weight. According to the report of these authors, egg weight was higher in quails fed a diet supplemented with 0.40 mg/kg sodium-selenite compared to birds fed 0.20 mg/kg of dietary selenium.…”

“…It could be assumed that if the amount of glucose in the blood is increased, the production of eggs and the development of the quail should be improved. (24) However, serum glucose levels had no effect (P = 0.5341) on production parameters. Hence, further long-term studies are needed to better understand the effects of selenium supplementation in quails' productive performance and health.…”

“…Our results are in accordance with most of previous studies that report no influence of sodium selenite on body weight gain and body weight change. (14,(23)(24)(25) Tsekhmistrenko et al (13) observed that dietary sodium selenite increased body weight gains of quails at the beginning of the study. However, this trend disappeared after five weeks.…”

Effects of different selenium sources and levels on the physiological state, selenoprotein expression, and production and preservation of selenium-enriched eggs in laying hens

“…The findings of this research indicated that the supplementation of SM improved the laying rate of hens compared to SS, whereas SY did not have the same effect. Nassef et al (2020) demonstrated that the laying rate of Japanese quail significantly increased with dietary supplementation of SM compared to SS. Additionally, Liu et al (2020a) reported that the supplementation of SS or SY did not affect the laying rate of hens.…”