Transcriptome analysis revealed that delaying first colostrum feeding postponed ileum immune system development of neonatal calves

Genomics. 2021 Nov;113(6):4116-4125. doi: 10.1016/j.ygeno.2021.10.011. Epub 2021 Oct 29.

Abstract

Our objective was to evaluate the effect of colostrum feeding times on genome-wide gene expression of neonatal calves. In total, twenty-seven calves were assigned to three colostrum feeding treatments: within 45 min (TRT0h, n = 9), 6 h (TRT6h, n = 9) and 12 h (TRT12h, n = 9). Ileum tissues were collected at 51 h and transcriptomic analysis was conducted. Uniquely expressed genes were identified in TRT0h group with enriched "Antigen Presentation" function. Meanwhile, the weighted gene co-expression network analysis (WGCNA) identified four significant gene modules (|correlation| > 0.50 and P ≤ 0.05). In particular, Turquoise gene module with the enriched "Cadherin binding involved in cell-cell adhesion" and "Cell-cell adherences junction" GO terms were significantly correlated with Faecalibacterium prausnitzii (R = -0.70, P < 0.01) and Bifidobacterium (R = -0.55, P < 0.01). Our findings suggest feeding colostrum without delay could stimulate the expression of genes involved in immune function development related to host response and microbial colonization in neonatal claves.

Keywords: Delayed colostrum feeding; Host-microbial interactions; Ileal transcriptome; Immune functions; Neonatal calf.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Animals, Newborn
  • Cattle
  • Colostrum* / metabolism
  • Female
  • Gene Expression Profiling
  • Ileum*
  • Immune System
  • Pregnancy