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Increase in plasma total antioxidant capacity of grazing J apanese B lack heifers and cows in forestland in J apan
Author(s) -
Haga Satoshi,
Ishizaki Hiroshi,
Nakano Miwa,
Nakao Seiji,
Hirano Kiyoshi,
Yamamoto Yoshito,
Kitagawa Miya,
Sasaki Hiroyuki,
Kariya Yoshihiro
Publication year - 2014
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/asj.12102
Subject(s) - grazing , pasture , forage , zoology , antioxidant capacity , antioxidant , plasma concentration , cattle grazing , chemistry , biology , agronomy , biochemistry , endocrinology
Abstract Blood total antioxidant capacity ( TAC ) has become a key bio‐marker for animal health. Forest‐grazing cattle are known to forage various native plants that have high TAC . This study evaluated differences of plasma TAC between forest‐grazing ( FG ) and pasture‐grazing cattle ( PG ). Experiment 1 monitored the plasma TAC levels of 32 Japanese Black cattle. The level in PG did not change throughout the grazing period. However, that in FG , which increased from summer, was significantly higher than that in PG through fall ( P < 0.05). In experiment 2, we used nine Japanese Black heifers and investigated their blood antioxidant parameters and the TAC in plants that the cattle consumed in late J une and S eptember. The plasma TAC levels in FG were significantly higher than those in PG in both periods ( P < 0.05). Plasma levels of lipid peroxidation in FG tended to be lower than that in PG ( P = 0.098). Furthermore, the TAC levels in various species of shrubs and trees consumed by FG were higher than those in pasture grasses. Results of this study show that plasma TAC of grazing Japanese Black cattle in forestland increase from summer through fall.