Circadian zinc feeding regime in laying hens related to laying performance, oxidation status, and interaction of zinc and calcium.

ABSTRACT: This study investigated that circadian zinc (Zn) feeding regime affected laying performance, Zn and calcium (Ca) status, antioxidant capacity and gene expression of circadian clock, and Ca and Zn transporter in laying hens. In total, 162 of 21-wk Hyline Sophie laying hens were assigned randomly into 3 groups including CON group (Control Zn, basal diets supplemented 60 mg/kg Zn), HL group (high-low Zn, basal diets supplemented 120 mg/kg Zn-basal diets), and LH group (low-high Zn, basal diets-basal diets supplemented 120 mg/kg Zn), which were fed at 0,530 h and 1,530 h, respectively. Blood, tibia, duodenum, and eggshell gland samples were collected at 8 h intervals with starting at 0,000 h in 1 d after 10 wk of experiment. Compared with CON group: 1) Feed conversion ratio (FCR) of LH and HL

SUBMITTER: Lin X 

PROVIDER: S-EPMC7704742 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature