Effect of supplementation and withdrawal of selenium-enriched kale sprouts on productivity and egg selenium concentration of laying hens

Abstract

The aim of this trial was to investigate the effect of supplementation and withdrawal of selenium-enriched kale sprouts (SeKS) on productivity and egg Se concentration of laying hens. Selenium from commercial Se-enriched yeast (SeY) was used as a comparative Se source.Methods: One-hundred and eighty 61-week-old laying hens were randomly divided into 5 treatment groups with 4 replicates (9 hens each) in a 2x2+1 Augmented Factorial Experiment in a completely randomized design (CRD). The experimental diets were basal diet, basal diet supplemented with 0.2 and 0.4 mg Se/kg from SeKS and SeY, respectively. The 8-week feeding trial was divided into 2 periods, namely the Se supplemental period (week 1 to 4) and the Se withdrawal period (week 5 to 8).Results: Productive performance, egg quality and egg Se concentration of laying hens were not affected by sources of Se (SeKS and SeY) during both, the Se supplemental and withdrawal periods. Egg production and egg Se concentration increased (P<0.05) with increasing levels of Se supplementation. The egg Se concentration increased and reached a peak 1 week after Se supplementation. However, concentration of Se in eggs of hens fed Se from both sources decreased rapidly from the second week of the Se withdrawal period to reach the same egg Se concentration of hens fed the basal diet by the fourth week of the Se withdrawal period.

The impact of selenium yeast and vitamin E in blood profile and egg production of laying hens at the end of egg production period

“…The T3 treatment showed numerically higher egg production, although not statistically significant, it probably due to a high standard deviation in this variable. In agreement with this finding, a previous study showed inconsistent egg productivity in response to Se dosage (Chantiratikul et al, 2023).…”

“…The increase in egg weight and Haugh Unit further suggest that the supplements promoted albumen quality. One contributing factor that improved performance and egg quality in this study was related to increase ntioxidant capacity and reducing oxidative damage, which indirectly boosted health status and laying performance (Chantiratikul et al, 2023). However, the higher dose of these supplements with 0.675 mg selenium yeast and 200 vitamin E (T4) did not affect the productive performance and egg quality, probably due to adverse effects when these supplements were combined (Schrauzer, 2006;Kim and Kil, 2020;Rahbari, 2020).…”