Possible availability of ginkgo fruit as an additive for animal feed and mannure

2015 Fiscal Year Final Research Report

• Project/Area Number: 26660207
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Animal production science
• Research Institution: Hokkaido University
• Principal Investigator: KOBAYASHI YASUO 北海道大学, (連合)農学研究科(研究院), 教授 (50153648)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: メタン低減 / ギンナン果肉 / アナカルド酸 / 飼料添加物 / ルーメン / 糞便 / 発酵 / 菌叢

Outline of Final Research Achievements

Ginkgo fruit was evaluated as an methane inhibitor for rumen and fecal fermentation. Ethanol extract of ginkgo fruit was incubated with rumen fluid in batch and continuous cultures to monitor fermentation changes. Of 2 major cultivars, Kyuju was more potent than Tokuro in terms of methane mitigation and propionate enhancement, showing dose dependent responses. This was caused by a higher content of anacardic acid in the fruit of Kyuju. Rumen microbiota was drastically changed toward lower abundance of hydrogen and formate producing bacteria and higher abundance of propionate and succinate producing bacteria. As ginkgo extract decreased methane production from feces of dairy cattle in batch culture, ginkgo fruit is considered useful for modulating rumen and mannure fermentation.

Free Research Field

家畜栄養学