Improvement in the Immunity- and Vitamin D3-Activity-Related Gene Expression of Coccidiosis-Challenged Ross 708 Broilers in Response to the In Ovo Injection of 25-Hydroxyvitamin D3

ABSTRACT: Effects of the in ovo administration of two vitamin D₃ sources (vitamin D₃ (D₃) and 25-hydroxyvitamin D₃ (25OHD₃)) on the expression of D₃ activity- and immunity-related genes in broilers subjected to a coccidiosis infection were investigated. At 18 d of incubation (doi), five in ovo injection treatments were administrated to live embryonated Ross 708 broiler hatching eggs: non-injected (1) and diluent-injected (2) controls, or diluent injection containing 2.4 μg of D₃ (3) or 2.4 μg of 25OHD₃ (4), or their combination (5). Birds in the in ovo-injected treatments were challenged at 14 d of age (doa) with a 20× dosage of a live coccidial vaccine. At 14 and 28 doa, the expression of eight immunity-related

SUBMITTER: Fatemi SA 

PROVIDER: S-EPMC9558988 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature