Relationship between Leukocyte Population and Nutritive Conditions in Dairy Herds with Frequently Appearing Mastitis

Journal of Veterinary Medical Science

Kei-ichi MATSUDA⁴  Hiromichi OHTSUKA⁴  Ryo ABE³  Sei-ichi KAWAMURA⁴  Masayuki KOHIRUIMAKI⁴  Tomohito HAYASHI³  Ken KATSUDA¹  Machiko MASUI² 

[1] Shichinohe Research Unit, National Institute of Animal Health;Kohiruimaki Animal Medical Service;Institute for Biological Sciences, Tokyo University of Science;Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Sciences, Kitasato University

关键词: dairy herd;    leukocyte population;    mastitis;    nutritive conditions;   

DOI  :  10.1292/jvms.68.113

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(26)Cited-By(8)To clarify the relationship between cellular immune status and nutritive condition, feeding program, blood profiles, and leukocyte populations were analyzed in two dairy herds experiencing frequent mastitis. Fourteen of the 35 lactating cows in herd A, and 18 of the 50 lactating cows in herd B scored positive on the California Mastitis Test (CMT), and 3 of the 73 lactating cows were CMT positive in herd C, which was the control. All herds were evaluated during five different milking stages, and blood was collected from five cows at each stage. With regard to feed content, the percentages of total digestible nutrients (TDN) and crude protein (CP) were found to be lower in herds A and B than in herd C. Levels of serum total cholesterol and blood urea nitrogen were lower in herds A and B than those in herd C. Neutrophil counts in herds A and B were increased compared to the neutrophil counts in herd C. On the other hand, the numbers of CD3+ T cells and CD14-MHC class+ cells were lower in herd A and B than in herd C. A decrease in peripheral lymphocytes and undernourishment were observed in the herds with frequent occurring mastitis.

【 授权许可】

Unknown