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  1. Comparative analysis of maternal colostrum and colostrum replacer effects on immunity, growth, and health of japanese black calves

Comparative analysis of maternal colostrum and colostrum replacer effects on immunity, growth, and health of japanese black calves

Urakawa, M ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.3390/ani14020346
  3. Publisher: 2024
  4. Abstract:
  5. Maternal colostrum (MC) is an important source of nutrients and immune factors for newborn calves. However, when colostrum is unavailable or of poor quality, a colostrum replacer (CR) may be a suitable alternative to MC. As stock-raising farmers must make informed decisions about colostrum feeding management, this study was conducted to determine the effect of feeding MC versus CR on the promotion of immunological status, growth, and health in pre-weaned Japanese black (JB) calves. Sixteen newborn JB calves were fed MC after birth, and 16 JB calves were fed CR. For the MC group, the numbers of γδ T cells, CD4+ cells, CD8+ cells, CD4+CD8+ cells, B cells, and MHC class II+ cells were significantly higher compared with the CR group. Furthermore, the expression levels of interleukin (IL)-1β-, IL-2-, and interferon-γ (IFN-γ)-encoding mRNAs were significantly higher in the MC group compared with the CR group. A lower incidence of disease in 1-month-old calves and higher carcass weight in the MC group were observed compared with the CR group. These results suggest that CR activates the immune system delayed in calves compared with MC. MC increases populations of various immunocompetent cells, which can reduce infection rates and improve body weight gain. © 2024 by the authors
  6. Keywords:
  7. Growth ; Japanese black calf ; Cytokine ; Gamma interferon ; Immunoglobulin G ; Interleukin 10 ; Interleukin 1beta ; Interleukin 2 ; interleukin 4 ; Major histocompatibility antigen class 2 ; Messenger RNA ; Adaptive immunity ; Animal experiment ; Blood sampling ; Bodily secretions ; Body weight gain ; Carcass ; CD4 CD8 ratio ; CD4+ T lymphocyte ; CD8+ T lymphocyte ; Cell density ; Cell proliferation ; Colostrum ; Colostrum feeding management ; Colostrum replacer effect ; Comparative effectiveness ; Experimental design ; Feeding ; Fluorescence activated cell sorting ; Gamma delta T lymphocyte ; Immune response ; Immune status ; Immune system ; Immunocompetent cell ; Immunofluorescence ; Immunological tolerance ; Immunomodulation ; Immunosuppressive treatment ; Japan ; Lymphocyte ; Maternal colostrum ; MRNA expression level ; MTT assay ; Natural killer cell ; Neutrophil count ; Newborn ; Nonhuman ; Peripheral blood mononuclear cell ; Phagocytosis ; Real time polymerase chain reaction ; Regulatory T lymphocyte ; Respiratory tract disease ; Viable cell count
  8. Source: Animals ; Volume 14, Issue 2 , 2024 ; 20762615 (ISSN)
  9. URL: https://pubmed.ncbi.nlm.nih.gov/38275805