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全国47都道府県の乳牛の飼育頭数ランキングです。 乳牛は乳の量が多くなるように品種改良された家畜用の牛のこと。日本で飼育されている乳牛の99％はホルスタイン種です。ホルスタイン種の他には、ジャージー種とブラウンスイス種が … 続きを読む 都道府県別の乳牛の飼育頭数ランキング