# Seasonal variations in the concentration of antimicrobial components in milk of dairy cows
> Suzuki N.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_85088504077
Jurnal / Konferensi: Animal Science Journal
Tahun terbit: 2020
DOI: https://doi.org/10.1111/asj.13427
ISSN: 13443941
Kuartil SJR: Q2
Citations: 21

## Authors
- Suzuki N.

## Abstract
The incidence of bovine mastitis and the bulk milk somatic cell count (BMSCC) are influenced by season, which may be associated with innate immune functions, including antimicrobial components in mammary glands. Therefore, the present study was conducted to examine the effect of season on antimicrobial components in milk. Rectal temperature and plasma cortisol, thyroxine, and derivatives of reactive oxygen metabolites (d-ROMs) were measured as stress parameters. Concentrations of lactoferrin (LF), lingual antimicrobial peptide (LAP), psoriasin (S100A7), and Immunoglobulin A (IgA) in milk were measured as indicators of innate immune function. LF and LAP concentrations were significantly lower in summer than in winter and spring, respectively, whereas the concentration of S100A7 was significantly lower in winter than in spring and autumn. The rectal temperature was significantly higher in summer than in other seasons, whereas plasma cortisol, thyroxine, and d-ROMs did not exhibit any seasonal variation. In conclusion, even though stress parameters were not changed, the concentration of antimicrobial components, such as LF and LAP, decreased in summer, which may explain the frequent occurrence of mastitis during this season.

## Keywords
- Lactoferrin
- Mastitis
- Antimicrobial
- Animal science
- Summer season
- Somatic cell count
- Innate immune system
- Biology
- Immune system
- Seasonality
- Food science
- Immunology
- Microbiology
- Lactation
- Ecology
- Pregnancy
- Biochemistry
- Physics
- Genetics
- Meteorology
- Ice calving

---
Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
Saat mengutip, gunakan DOI bila tersedia atau URL kanonis di atas.