Changes in oxidative status in periparturient dairy cows in hot conditions

Masahito Tanaka, Yuko Kamiya, Tomoyuki Suzuki, Yutaka Nakai

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We investigated the changes in the plasma concentrations of oxidative stress markers in periparturient dairy cows in hot conditions. This study was performed on 10 cows from day -5 to day 10 after parturition. The experimental duration was divided into three periods: period 1 (5 days before parturition); period 2 (5 days after parturition); and period 3 (from day 6 to day 10 after parturition). The average rectal temperature in the cows during the experimental period was more than 39°C. Plasma aspartate aminotransferase activities in periods 2 and 3 were higher than that in period 1 (P<0.05). Blood urea nitrogen concentration in period 3 was lower than those in periods 1 and 2 (P<0.05). The total ascorbic acid concentration in the plasma in period 2 was greater than those in periods 1 and 3 (P<0.05). Thiobarbituric acid reactive substances (TBARS) concentrations in periods 2 and 3 were greater than that in period 1 (P<0.05). TBARS concentration was positively correlated with aspartate aminotransferase activity (P<0.05). These results suggested that oxidative stress increased in cows after parturition under hot climatic conditions.

Original languageEnglish
Pages (from-to)320-324
Number of pages5
JournalAnimal Science Journal
Volume82
Issue number2
DOIs
Publication statusPublished - 2011 Apr 1

Keywords

  • Dairy cows
  • Hot condition
  • Oxidative stress
  • Periparturient

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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