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Changes in Peripheral Leukocyte Subsets in Dairy Cows with Inflammatory Diseases after Calving

2004; Japanese Society of Veterinary Science; Volume: 66; Issue: 8 Linguagem: Inglês

10.1292/jvms.66.905

1347-7439

Hiromichi OHTSUKA, Masateru Koiwa, Shigeo Fukuda, Yohei SATOH, Tomohito Hayashi, Fumio Hoshi, Tomoo YOSHINO, Seiichi Kawamura,

Effects of Environmental Stressors on Livestock

To clarify the cellular immune system in dairy cows with inflammatory diseases after calving, the leukocyte subsets were examined in Holstein dairy cows. Twenty Holstein cows reared in one herd, were used in this study. Nine cows (Group 1) experienced onset of mastitis or puerperal fever within 2 weeks after calving, and the other eleven cows remained healthy (Group 2) after calving. The numbers of CD3+, CD4+ and CD8+ cells tended to be lower in Group 1 than in Group 2 from the day of calving through week 1. These results suggested that the cows with inflammatory diseases might have experienced a decline in T cells by the day of calving, before the onset of disease.