Relationship between milk production and plasma concentrations of oxidative stress markers during hot season in primiparous cows

Masahito Tanaka, Yuko Kamiya, Tomoyuki Suzuki, Mitsuru Kamiya, Yutaka Nakai

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Oxidative stress markers, ascorbic acid, and sulfhydryl (SH) residue concentration in primiparous cows' plasma and their relationship to milking performance during hot seasons were investigated. The rectal temperature of cows correlated negatively with SH residue (r = -0.38, n = 38, P < 0.05) and ascorbic acid (r = -0.34, P < 0.05) concentrations in the cows' plasma. The group with a higher concentration of ascorbic acid over the mean value produced significantly more milk (P < 0.05) than did the group with a lower ascorbic acid concentration. Although the cows' milk production showed a positive correlation with ascorbic acid concentration in plasma (r = 0.47, P < 0.05), the relation of SH residue concentration to milk yield was not constant. The plasma SH residue concentration during the hot season correlated positively with milk protein % (r = 0.38, P < 0.05), lactose % (r = 0.35, P < 0.05), and solid-non-fat (SNF) % (r = 0.47, P < 0.05), respectively, but not with fat %. On the other hand, ascorbic acid concentration in plasma showed negative correlations with milk fat % (r = -0.34, P < 0.05) and protein % (r = -0.49, P < 0.05), but correlated positively with lactose % (r = 0.52, P < 0.05). The produced amount (g/day) of milk protein (r = 0.42, P < 0.05), lactose (r = 0.61, P < 0.05), and SNF (r = 0.56, P < 0.05) showed positive correlations with ascorbic acid concentration in plasma.

本文言語English
ページ(範囲)481-486
ページ数6
ジャーナルAnimal Science Journal
79
4
DOI
出版ステータスPublished - 2008 8 1

ASJC Scopus subject areas

  • 農業および生物科学(全般)
  • 獣医学(全般)

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