Reasons for Anestrus in Japanese Brown Cows Fed Soybean Waste
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- HAMADA Masami
- Kikuchi District Agricultural Cooperative Association, Livestock Clinic Center
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- YOSHITAMA Kunijiro
- 熊本大学理学部
Bibliographic Information
- Other Title
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- くず大豆が給与された褐毛和種雌牛に発生した無発情の原因調査
- クズダイズ ガ キュウヨ サレタ カツモウ ワシュ メウシ ニ ハッセイ シタ ムハツジョウ ノ ゲンイン チョウサ
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Abstract
The residue of sorting, soybean waste is a mixture of numerous plant fragments and defective seeds. Japanese Brown cows fed this waste demonstrated anestrus. To investigate the reasons for this phenomenon, reverse-phase HPLC was used to measure plant-estrogen isoflavonoids in the feed. These measurements showed that, in addition to daidzein and genistein, soybean waste contains a great deal of formononetin (76.48μg/g) and coumestrol (89.01μg/g).Coumestro1, daidzein, and equol were detected in the serum of anestrous cows. After amounts of soybean waste in the diet were reduced, estrus occurred again within a month. At this time, no isoflavonoids were detected in the blood. These results indicate the possibility that isoflavonoids in soybean waste may have caused anestrus in the animals examined.
Journal
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- Journal of the Japan Veterinary Medical Association
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Journal of the Japan Veterinary Medical Association 56 (11), 722-727, 2003
Japan Veterinary Medical Association
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Keywords
Details 詳細情報について
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- CRID
- 1390001204710461440
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- NII Article ID
- 10011901651
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- NII Book ID
- AN00191857
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- COI
- 1:CAS:528:DC%2BD3sXpvVyktbY%3D
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- ISSN
- 21860211
- 04466454
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- NDL BIB ID
- 6772421
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed