In ovo trace element supplementation enhances expression of growth genes in embryo and immune genes in post‐hatch broiler chickens. (24th September 2015)

• Record Type: Journal Article
• Authors: Goel, Akshat; Bhanja, Subrat K; Mehra, Manish; Mandal, Asitbaran; Pande, Veena
• Is Part Of: Journal of the science of food and agriculture. Volume 96:Number 8(2016)
• Page Start: 2737
• Page End: 2745
• Publication Date: 2015-09-24
• Subjects: trace elements -- in ovo supplementation -- gene expression -- growth and immunity -- broiler chickens; Food -- Periodicals; Agriculture -- Periodicals; 664
• DOI: 10.1002/jsfa.7438
• Languages: English
• ISSNs: 0022-5142

Abstract

Abstract: BACKGROUND: Differential expression of growth‐ and immunity‐related genes and post‐hatch performances were evaluated in in ovo zinc (Zn), iodine (I) or selenium (Se) supplemented chicken embryos. RESULT: There was about 9–18% reduction in hatchability of Zn, I or Se supplemented eggs. In ovo trace element supplementation did not improve post‐hatch growth. Two‐way analysis of data revealed significant effect ( P > 0.01) of period, trace elements and their interactions. Expression of hepatic somatotropin, insulin‐like growth factor‐II and mucin gene was highest at 20 th embryonic day but decreased during post‐hatch periods. In ovo Zn or I supplemented embryos had higher expression of growth‐related genes compared to the Se or un‐injected control group. Expression of interleukin‐6 was higher ( P < 0.01) in in ovo I supplemented chicks (2.5‐fold) but lower in the Zn and Se groups than in the un‐injected control group. However, Zn and Se supplemented chicks had higher cellular immune gene expression. In vivo response to mitogen phytohaemaglutinin was also higher ( P < 0.01) in Zn or Se supplemented chicks CONCLUSION: In ovo supplementation of Zn, I and Se did not improve the post‐hatch growth, but increased growth‐related gene expression. Iodine improved humoral immune gene expression whereas Zn and Se enhanced cell‐mediated immune gene expression in broiler chickens. © 2015 Society of Chemical Industry