Ontology highlight
ABSTRACT:
SUBMITTER: Gan L
PROVIDER: S-EPMC6166276 | biostudies-literature | 2018
REPOSITORIES: biostudies-literature
Gan Liping L Fan Hao H Nie Wei W Guo Yuming Y
Journal of animal science and biotechnology 20181001
<h4>Background</h4>Laying hens over 75 weeks of age commonly show great declines in immunity and production performance. It is unclear whether these declines can be relieved by supplementing with ascorbic acid (AA) in feed. Two trials were conducted to investigate the synthesis and metabolism of AA in layers of different ages and the effects of dietary supplemental AA on the performance and the immune and antioxidant statuses of 78 weeks old hens.<h4>Methods</h4>In Exp. 1, equal numbers (24 hens ...[more]