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Regional differences in the fatty acid composition, and vitamin and carotenoid concentrations in farm bulk milk in Hokkaido, Japan

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/86118

Title: Regional differences in the fatty acid composition, and vitamin and carotenoid concentrations in farm bulk milk in Hokkaido, Japan
Authors: Mitani, Tomohiro Browse this author →KAKEN DB
Kobayashi, Kuniyuki Browse this author →KAKEN DB
Ueda, Koichiro Browse this author →KAKEN DB
Kondo, Seiji Browse this author →KAKEN DB
Keywords: feeding management
Hokkaido
milk compositions
regional difference
Issue Date: 20-Jun-2021
Publisher: John Wiley & Sons
Journal Title: Animal science journal
Volume: 92
Issue: 1
Start Page: e13570
Publisher DOI: 10.1111/asj.13570
Abstract: In this study, we investigated the regional differences in the composition of farm bulk milk produced at three different dairy areas in Hokkaido, Japan. A field survey was conducted at Central, Tokachi, and North areas of Hokkaido, three or four times a year. At each farm, an interview questionnaire for farm basal data was conducted, and 500 ml of bulk tank milk sample was obtained. Fatty acid composition, and vitamin and carotenoid concentrations in the milk samples were determined. In Central and Tokachi areas, corn silage was used as the main forage. In North area, fresh herbage was the dominant feed in the summer season, and grass hay was the main feed in the winter season. Discriminant analysis revealed that the composition of milk samples differed among the areas and seasons. Milk from Central and Tokachi areas contained a higher ratio of linoleic acid compared with that from North area, but there were only slight differences in the composition of milk between Central and Tokachi areas. The concentrations of carotenoids and alpha-tocopherol were higher in samples from North area and the ratios of trans-vaccenic acid and conjugated linoleic acid were higher in the summer season than in the indoor season.
Rights: This is the peer reviewed version of the following article: Mitani, T, Kobayashi, K, Ueda, K, Kondo, S. (2021). Regional differences in the fatty acid composition, and vitamin and carotenoid concentrations in farm bulk milk in Hokkaido, Japan. Anim Sci J, 92, e13570., which has been published in final form at https://doi.org/10.1111/asj.13570. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
URI: http://hdl.handle.net/2115/86118
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三谷 朋弘

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