タイトル |
暑熱環境下における泌乳牛への飼料イネサイレージ給与 |
担当機関 |
(独)農業・生物系特定産業技術研究機構 九州沖縄農業研究センター |
研究期間 |
2003~2005 |
研究担当者 |
|
発行年度 |
2005 |
要約 |
暑熱環境下において、飼料イネサイレージ「ニシアオバ」を、輸入オーツ乾草の代替としてTMRに乾物中20%程度混合して乳量約30kgの乳牛に給与した場合、乾物摂取量は1kg程度少ないが、乳量、乳成分への影響は見られない。
|
キーワード |
飼料イネ、オーツ乾草、泌乳牛、夏季
|
背景・ねらい |
飼料イネサイレージは、チモシー、オーツなどの輸入乾草に匹敵する飼料価値を有しており、嗜好性も良いことから、泌乳牛用粗飼料として普及しつつある。一方、西南暖地においては、夏季に乳牛の乾物摂取量が低下することから、特に粗飼料は品質の良好なものが求められる。そこで、西南暖地で一般的に給与されているオーツ乾草を飼料イネサイレージで代替したTMRを泌乳牛に給与し、暑熱環境下の泌乳牛用自給粗飼料としての有効性を検討する。
|
成果の内容・特徴 |
- 暑熱環境下(環境制御実験室:温度摂氏28度、湿度60%)において、泌乳中期~後期の乳牛4頭を供試し、予備期9日間、本試験期5日間とするクロスオーバー法により、飼料イネ(ニシアオバ、黄熟期刈り)主体TMRまたはオーツ主体TMR(表1)を給与した場合、乾物摂取量は飼料イネ区でやや少ないものの、有意な差は認められない(表2)。
- 乳量、乳脂肪率、乳蛋白質率、無脂固形分率において、両区で差は見られない(表2)。
- 血漿中NEFA、グルコースおよび総タンパク質濃度には有意な差は見られないが、尿素態窒素濃度は飼料イネ区で高い傾向にある。ただし、血液性状は両区ともに正常の範囲以内である(表3)。
- 試験期間中の体温、エネルギー利用率は両区で有意な差は見られないが、体蓄積量は飼料イネ区で減少する(表4)。
|
成果の活用面・留意点 |
- 西南暖地における粗飼料自給率向上技術として有効である。
- 飼料イネサイレージをオーツ乾草の代替として用いる際には、高エネルギー飼料を組み合わせると良い。
- 暑熱環境下における飼料イネサイレージの品質低下に留意する。
|
図表1 |
![222978-1.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/222978-1.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGkaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAOz34C6TcwfdGyekky17mUI4m%2FPc7mR0RcqHHxXdLnHwAiEAt%2BlCiJEmGPMGXDAAkRjw64%2FufCb7dZmA9Wxew1XX16QqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDPMeSS6d5BtVLJSwaSrtA1gL5lSRiVJ4X6pGuQs3yZETrYDhxbJD8a7SJex4%2F0N0sjt0PQid%2Bx2Bj0I6giBqKe0VT1E9TJa7nNp2XWZioMDmAZY6j8INBQdgvKnvn5%2BKTvM5gPJLsIqJzwtX86OtKZRq1lXZE6VwpZ72puhA3yKKLWBvlxHn8UaJ0gDIAPtXZMu93v292qNAwUeWr31%2BZD1PEzYGCkSjhruu7C43bZrhJmLL0WtBViQJdpch3adfGfvGIou0w0GFbWgld%2BAGbsp0vBTbW2hLP%2Blrf2HrP6Am0Yq9KdwR32m1MezEYUODHh1uXMwAFU%2FlANXWO8X3k5kjCeqHfKmkgbqaMttDKHxzN9DFbabfudxK8J%2Fw6BiGCWtf183ZvOX970%2FqnAX0N5UOQlrwI8GOKcy7QIBOqepq4Tz%2BuDALU0TBS7ckud1tdBOtMc3wCpRwBBHMzgJwi4D0B8eRQW7t3ka3R5lj9Fltw3Hb8R%2F34IAhhklwhEMzEGK11NCw5aZxhnSiBZ3HYO3vKjKhkjFQoiPlTaLL6nxTqCePbf6SkN%2FnT%2BROxGwJ%2BOxCPJbYqPiNILQQWHnZwNtLKorzSBYFpGJ0m%2Fks4RftD1GgKdYPjFTtUVwc%2FCQN%2BUVxLlmHNJqXQaBkRezrUFU3bn8ZY%2BGH7DK40VcwwojPtgY6pQGk57xBa%2F65Szff4iUP81FcfDUuQqwWqgJxoVPVUOVdavYD8EAyvqrVuMjN%2FMwfvQ2FcFcGQt8KSQcvOXKlyDN34%2FL4mLxJxGYlP6wga%2BhyAVPt%2BUpZPC0DgGMI6eUGGWc4cXZbwOd1H2Qxoh%2FHJs464kTswnrJx2r%2B8orx%2BkLlSQYAmJ%2BMjfQv0xJarskfUYQpWAqDu7WD%2BeBc60eCqkMtozbj8T4%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUURKZOKSD%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T013532Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=7bea8b9e6d3f934a03dd7a7322cccb8bd546ca74fee70ff1b08a892830da299d) |
図表2 |
![222978-2.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/222978-2.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGkaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAOz34C6TcwfdGyekky17mUI4m%2FPc7mR0RcqHHxXdLnHwAiEAt%2BlCiJEmGPMGXDAAkRjw64%2FufCb7dZmA9Wxew1XX16QqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDPMeSS6d5BtVLJSwaSrtA1gL5lSRiVJ4X6pGuQs3yZETrYDhxbJD8a7SJex4%2F0N0sjt0PQid%2Bx2Bj0I6giBqKe0VT1E9TJa7nNp2XWZioMDmAZY6j8INBQdgvKnvn5%2BKTvM5gPJLsIqJzwtX86OtKZRq1lXZE6VwpZ72puhA3yKKLWBvlxHn8UaJ0gDIAPtXZMu93v292qNAwUeWr31%2BZD1PEzYGCkSjhruu7C43bZrhJmLL0WtBViQJdpch3adfGfvGIou0w0GFbWgld%2BAGbsp0vBTbW2hLP%2Blrf2HrP6Am0Yq9KdwR32m1MezEYUODHh1uXMwAFU%2FlANXWO8X3k5kjCeqHfKmkgbqaMttDKHxzN9DFbabfudxK8J%2Fw6BiGCWtf183ZvOX970%2FqnAX0N5UOQlrwI8GOKcy7QIBOqepq4Tz%2BuDALU0TBS7ckud1tdBOtMc3wCpRwBBHMzgJwi4D0B8eRQW7t3ka3R5lj9Fltw3Hb8R%2F34IAhhklwhEMzEGK11NCw5aZxhnSiBZ3HYO3vKjKhkjFQoiPlTaLL6nxTqCePbf6SkN%2FnT%2BROxGwJ%2BOxCPJbYqPiNILQQWHnZwNtLKorzSBYFpGJ0m%2Fks4RftD1GgKdYPjFTtUVwc%2FCQN%2BUVxLlmHNJqXQaBkRezrUFU3bn8ZY%2BGH7DK40VcwwojPtgY6pQGk57xBa%2F65Szff4iUP81FcfDUuQqwWqgJxoVPVUOVdavYD8EAyvqrVuMjN%2FMwfvQ2FcFcGQt8KSQcvOXKlyDN34%2FL4mLxJxGYlP6wga%2BhyAVPt%2BUpZPC0DgGMI6eUGGWc4cXZbwOd1H2Qxoh%2FHJs464kTswnrJx2r%2B8orx%2BkLlSQYAmJ%2BMjfQv0xJarskfUYQpWAqDu7WD%2BeBc60eCqkMtozbj8T4%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUURKZOKSD%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T013532Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=25ddbb6a932f0f9a74dd6fb2689215ac0db46db84de05b6237280d0c5ed2ea68) |
図表3 |
![222978-3.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/222978-3.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGkaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAOz34C6TcwfdGyekky17mUI4m%2FPc7mR0RcqHHxXdLnHwAiEAt%2BlCiJEmGPMGXDAAkRjw64%2FufCb7dZmA9Wxew1XX16QqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDPMeSS6d5BtVLJSwaSrtA1gL5lSRiVJ4X6pGuQs3yZETrYDhxbJD8a7SJex4%2F0N0sjt0PQid%2Bx2Bj0I6giBqKe0VT1E9TJa7nNp2XWZioMDmAZY6j8INBQdgvKnvn5%2BKTvM5gPJLsIqJzwtX86OtKZRq1lXZE6VwpZ72puhA3yKKLWBvlxHn8UaJ0gDIAPtXZMu93v292qNAwUeWr31%2BZD1PEzYGCkSjhruu7C43bZrhJmLL0WtBViQJdpch3adfGfvGIou0w0GFbWgld%2BAGbsp0vBTbW2hLP%2Blrf2HrP6Am0Yq9KdwR32m1MezEYUODHh1uXMwAFU%2FlANXWO8X3k5kjCeqHfKmkgbqaMttDKHxzN9DFbabfudxK8J%2Fw6BiGCWtf183ZvOX970%2FqnAX0N5UOQlrwI8GOKcy7QIBOqepq4Tz%2BuDALU0TBS7ckud1tdBOtMc3wCpRwBBHMzgJwi4D0B8eRQW7t3ka3R5lj9Fltw3Hb8R%2F34IAhhklwhEMzEGK11NCw5aZxhnSiBZ3HYO3vKjKhkjFQoiPlTaLL6nxTqCePbf6SkN%2FnT%2BROxGwJ%2BOxCPJbYqPiNILQQWHnZwNtLKorzSBYFpGJ0m%2Fks4RftD1GgKdYPjFTtUVwc%2FCQN%2BUVxLlmHNJqXQaBkRezrUFU3bn8ZY%2BGH7DK40VcwwojPtgY6pQGk57xBa%2F65Szff4iUP81FcfDUuQqwWqgJxoVPVUOVdavYD8EAyvqrVuMjN%2FMwfvQ2FcFcGQt8KSQcvOXKlyDN34%2FL4mLxJxGYlP6wga%2BhyAVPt%2BUpZPC0DgGMI6eUGGWc4cXZbwOd1H2Qxoh%2FHJs464kTswnrJx2r%2B8orx%2BkLlSQYAmJ%2BMjfQv0xJarskfUYQpWAqDu7WD%2BeBc60eCqkMtozbj8T4%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUURKZOKSD%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T013532Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=44215eda84b684509b72dde51f0fb7213acb7450b50132173d04675b9dc17dac) |
図表4 |
![222978-4.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/222978-4.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGkaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAOz34C6TcwfdGyekky17mUI4m%2FPc7mR0RcqHHxXdLnHwAiEAt%2BlCiJEmGPMGXDAAkRjw64%2FufCb7dZmA9Wxew1XX16QqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDPMeSS6d5BtVLJSwaSrtA1gL5lSRiVJ4X6pGuQs3yZETrYDhxbJD8a7SJex4%2F0N0sjt0PQid%2Bx2Bj0I6giBqKe0VT1E9TJa7nNp2XWZioMDmAZY6j8INBQdgvKnvn5%2BKTvM5gPJLsIqJzwtX86OtKZRq1lXZE6VwpZ72puhA3yKKLWBvlxHn8UaJ0gDIAPtXZMu93v292qNAwUeWr31%2BZD1PEzYGCkSjhruu7C43bZrhJmLL0WtBViQJdpch3adfGfvGIou0w0GFbWgld%2BAGbsp0vBTbW2hLP%2Blrf2HrP6Am0Yq9KdwR32m1MezEYUODHh1uXMwAFU%2FlANXWO8X3k5kjCeqHfKmkgbqaMttDKHxzN9DFbabfudxK8J%2Fw6BiGCWtf183ZvOX970%2FqnAX0N5UOQlrwI8GOKcy7QIBOqepq4Tz%2BuDALU0TBS7ckud1tdBOtMc3wCpRwBBHMzgJwi4D0B8eRQW7t3ka3R5lj9Fltw3Hb8R%2F34IAhhklwhEMzEGK11NCw5aZxhnSiBZ3HYO3vKjKhkjFQoiPlTaLL6nxTqCePbf6SkN%2FnT%2BROxGwJ%2BOxCPJbYqPiNILQQWHnZwNtLKorzSBYFpGJ0m%2Fks4RftD1GgKdYPjFTtUVwc%2FCQN%2BUVxLlmHNJqXQaBkRezrUFU3bn8ZY%2BGH7DK40VcwwojPtgY6pQGk57xBa%2F65Szff4iUP81FcfDUuQqwWqgJxoVPVUOVdavYD8EAyvqrVuMjN%2FMwfvQ2FcFcGQt8KSQcvOXKlyDN34%2FL4mLxJxGYlP6wga%2BhyAVPt%2BUpZPC0DgGMI6eUGGWc4cXZbwOd1H2Qxoh%2FHJs464kTswnrJx2r%2B8orx%2BkLlSQYAmJ%2BMjfQv0xJarskfUYQpWAqDu7WD%2BeBc60eCqkMtozbj8T4%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUURKZOKSD%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T013532Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=4d33f03a6532a70ceb372068bcc48753074f1e77ede81e3bf78b67590765d43c) |
カテゴリ |
環境制御
乳牛
|