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Effects of Active Egg White Product/Clostridium butyricum Miyairi 588 Additive on Peripheral Leukocyte Populations in Periparturient Dairy Cows

2008; Japanese Society of Veterinary Science; Volume: 70; Issue: 3 Linguagem: Inglês

10.1292/jvms.70.321

1347-7439

Masayuki Kohiruimaki, Hiromichi OHTSUKA, Erika TANAMI, Madoka Kitagawa, Machiko MASUI, Takaaki ANDO, Seiichi Kawamura,

Reproductive Physiology in Livestock

The leukocyte populations of periparturient dairy cows were analyzed after administration of active egg white/Clostridium butyricum Miyairi additive. Sixty-eight Holstein milking cows were divided into 3 groups. Group A was administered active egg white product (AEWP)/Clostridium butyricum Miyairi 588 (Miyairi 588) additive (n=23). Group B was administered Miyairi 588 only (n=23), and Group C was the control group (n=22). The challenged groups were administered 100 g of AEWP + Miyairi 588, or Miyairi 588 alone, daily for 60 days from 1 month before until 1 month after paturition. Blood samples were collected from all groups three times (1 month before, 1 week after and 1 month after parturition) for analysis of the peripheral leukocyte population. The results showed significantly higher numbers of CD4+ cells in Group A compared with Group C 1 week after paturition. AEWP/Miyairi 588 additive may enhance the number of CD4+ T cells in periparturient dairy cows.