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Effects of ear corn silage supplementation on milk production and milk fatty acid profiles in grazing dairy farms
| Title: | Effects of ear corn silage supplementation on milk production and milk fatty acid profiles in grazing dairy farms |
| Authors: | Mitani, Tomohiro Browse this author →KAKEN DB | | Asakuma, Sadaki Browse this author | | Shinoda, Yuka Browse this author | | Ueda, Yasuko Browse this author | | Aoki, Yasuhiro Browse this author →KAKEN DB | | Oshita, Tomoko Browse this author |
| Keywords: | ear corn silage | | fatty acid profile | | grazing farm | | milk production |
| Issue Date: | 21-Sep-2020 |
| Publisher: | John Wiley & Sons |
| Journal Title: | Animal science journal |
| Volume: | 91 |
| Issue: | 1 |
| Start Page: | e13454 |
| Publisher DOI: | 10.1111/asj.13454 |
| Abstract: | This study investigated the effects of substituting ear corn silage (ECS) for commercial formula feed on milk production and milk fatty acid profiles in grazing dairy farms during the summer season. A field survey was conducted on five grazing dairy farms in every summer month of 2017, 2018, and 2019. Three of the five farms substituted fresh ECS for the commercial formula feed at a ratio of 2:1 from July of each year (ECS farms). Other farms maintained the same feeding management as before (non-ECS farms). An interview survey was conducted on each farm to calculate feed intake and milk yield per cow. Feed and milk samples were collected in each survey. Milk compositions and milk fatty acid profiles were determined. The substitution of ECS for the commercial formula feed did not affect milk yield or milk composition, but ECS farms maintained low levels of milk urea compared with non-ECS farms (p < .01). The ECS substitution also influenced some of the milk fatty acid proportions; C16:0 and C16:1 increased, and trans-11 C18:1, cis-9,trans-11 C18:2, and the sum of polyunsaturated fatty acids decreased, while these fatty acid proportions were maintained in non-ECS farms throughout the summer season (p < .05). |
| Rights: | This is the peer reviewed version of the following article: [https://onlinelibrary.wiley.com/doi/10.1111/asj.13454], which has been published in final form at
[10.1111/asj.13454]. 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/2115/82686 |
| 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)
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Submitter: 三谷 朋弘
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