タイトル |
集約放牧を組み入れたホルスタイン去勢牛の育成・肥育方式 |
担当機関 |
北海道農業試験場 |
研究期間 |
1993~1994 |
研究担当者 |
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発行年度 |
1994 |
要約 |
ホルスタイン去勢牛肥育において、育成期に高増体が得られる集約放牧を組み入れることにより、慣行の飼養方式と同じ期間で同等の肉量、肉質の枝肉が生産でき、飼料費を大幅に節減できる。
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背景・ねらい |
これまで行われてきた放牧を取り入れた肉牛の育成・肥育方式は、放牧期間の増体量が舎飼に比べ大幅に劣り、仕上げまでの期間が長期化することで、一般的な普及に至らなかった。しかし、従来の放牧育成より高増体で育成できる集約放牧技術が開発されたので、この技術を組み込んだホルスタイン去勢牛育成・肥育方式について、増体量、肉質、経済性を検討し、放牧を取り入れた肥育体系の実用性を明らかにする。
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成果の内容・特徴 |
集約放牧を組み入れたホルスタイン去勢牛の牛肉生産を行い(放牧育成区)、濃厚飼料多給型で飼養された牛(舎飼区)と増体、肉質について比較した。
- 6ヶ月齢の肥育もと牛を12ヶ月齢までチモシー草地で集約放牧により育成した(草地飼料作研究成果最新情報第8号44参照)後、24ヶ月齢まで肥育した(表4、5)。放牧育成期、舎飼肥育期の日増体量はそれぞれ0.92、1.24kgであった(図)。
- 放牧育成区は、舎飼区に比べ舎飼肥育期間中の増体が高く、飼養期間通算の日増体量はほとんど変わらない(表1、図)。
- 放牧育成区の枝肉歩留、肉質等級3以上の割合はともに舎飼区と同等だが、肉質は全国平均に比べ大幅に高く、良質の牛肉が生産できる(表1)。
- 屠場における内臓の一部廃棄率は、北海道の平均値に比べ低い(表3)。
- 給与飼料費は、1頭当たり152千円で、舎飼区の190千円に比べ、飼料費が20%節減できる(表2)。
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成果の活用面・留意点 |
- ホルスタイン去勢牛肥育において、放牧を取り入れた低コスト牛肉生産技術として有効。
- 放牧馴致期、肥育馴致期に増体を停滞させない飼養管理が必要。
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図表1 |
![224720-1.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/224720-1.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBcaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAMQdSzMvsyhw0gclM9FQvVK5VDvF7XnV1%2Fxbd6ZwwiHnAiEA31oz3FzplzFE9pQ2DjJ6y7cGTJQD8u57vnOfTtd5GRkqmQQIsP%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDE3Wuz50YuXgSiUOZirtAzUKosBdKliOdFZO3YiMB7ArtalaRa1jRt18MPgMQOVt5h7mvswjqeUQXYpJgPWKA5GlM0zly2az95dV4IAG4zq5%2BygS180G6LSxFFbkp6pd%2BcuUxFZr0T2JK0%2BV71CU%2F6kN0p6Ahpyzz8HKVCBzNdlT7J3AwBwTTOAw2s5%2BiEsP4ljQktC4pYEzixa2Is1i4ZWsx3k2mgFcg9aEsx%2FwyQOy%2Bma%2FWnBUTqQjdzMECC36Tz%2FeTHd7GieEEA54gxOnxDWpbLuthiHnJJOEpFjkx4f7xngJYqCriPBN4Rq%2BmGAylVrK%2FV7ixE9Qw2nZ96MWqL3%2BbIWeuV%2FA17KO70cberLDOI2Vt2ZlbDWJFaCM0NBZAp4m%2BYSAcxXMqodGgDdDPbQvVA0ZWSXPOck8xLTHTC4VuVnV5x2I35YV1oUEQmNVdJ8JXLt3X4CcedU3uwjT%2FnQoFEKf0nH3w3EY4BhW0a80wx0SbYT4%2F11S9PqKlCIaGPJXC4eFQpKHl8u2ocmZKMPGir9d85RTp05cwp4Sk%2FWGstuvf4QyFQalh%2FewgPPi%2BXdxqYyilCSvwobcwgI8iUTGq%2BsauAC%2BICnE496fG%2Fowb5QCA71Nxi90yPkRhGsqs4z%2BrxnKp6NSXFTklMnFKslhjvi%2FRPqzJKS162Aw%2B5yzswY6pQFqhbKVPThtIBlVzQeIxBR%2BC%2BNcvIW%2BAgNqHbTIDTLqOnFpDIyHkn2S7iT8Rg%2Fx75gDiPVwEodFKO9vQOiF8o94K4M8lZ7kIhFUKAYWa4Ukj08glQCV05InVUQ5Z2DtMYV4SM8d4pJa0eIxtrvFHYB8hL3YjGnY5WqsrHWTsQyPEAbTc5QFe1a0ytH5N55bb449t3Iw6hcvlE4bI7WlaNTC11CXAxY%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU3JILKDLF%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T232255Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=346c96fbe2b21b5022047cc4d732c70ef4c6eef9d7b786190fd2313348327431) |
図表2 |
![224720-2.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/224720-2.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBcaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAMQdSzMvsyhw0gclM9FQvVK5VDvF7XnV1%2Fxbd6ZwwiHnAiEA31oz3FzplzFE9pQ2DjJ6y7cGTJQD8u57vnOfTtd5GRkqmQQIsP%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDE3Wuz50YuXgSiUOZirtAzUKosBdKliOdFZO3YiMB7ArtalaRa1jRt18MPgMQOVt5h7mvswjqeUQXYpJgPWKA5GlM0zly2az95dV4IAG4zq5%2BygS180G6LSxFFbkp6pd%2BcuUxFZr0T2JK0%2BV71CU%2F6kN0p6Ahpyzz8HKVCBzNdlT7J3AwBwTTOAw2s5%2BiEsP4ljQktC4pYEzixa2Is1i4ZWsx3k2mgFcg9aEsx%2FwyQOy%2Bma%2FWnBUTqQjdzMECC36Tz%2FeTHd7GieEEA54gxOnxDWpbLuthiHnJJOEpFjkx4f7xngJYqCriPBN4Rq%2BmGAylVrK%2FV7ixE9Qw2nZ96MWqL3%2BbIWeuV%2FA17KO70cberLDOI2Vt2ZlbDWJFaCM0NBZAp4m%2BYSAcxXMqodGgDdDPbQvVA0ZWSXPOck8xLTHTC4VuVnV5x2I35YV1oUEQmNVdJ8JXLt3X4CcedU3uwjT%2FnQoFEKf0nH3w3EY4BhW0a80wx0SbYT4%2F11S9PqKlCIaGPJXC4eFQpKHl8u2ocmZKMPGir9d85RTp05cwp4Sk%2FWGstuvf4QyFQalh%2FewgPPi%2BXdxqYyilCSvwobcwgI8iUTGq%2BsauAC%2BICnE496fG%2Fowb5QCA71Nxi90yPkRhGsqs4z%2BrxnKp6NSXFTklMnFKslhjvi%2FRPqzJKS162Aw%2B5yzswY6pQFqhbKVPThtIBlVzQeIxBR%2BC%2BNcvIW%2BAgNqHbTIDTLqOnFpDIyHkn2S7iT8Rg%2Fx75gDiPVwEodFKO9vQOiF8o94K4M8lZ7kIhFUKAYWa4Ukj08glQCV05InVUQ5Z2DtMYV4SM8d4pJa0eIxtrvFHYB8hL3YjGnY5WqsrHWTsQyPEAbTc5QFe1a0ytH5N55bb449t3Iw6hcvlE4bI7WlaNTC11CXAxY%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU3JILKDLF%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T232255Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=1e676314af26901d6e8a36bbd224521f956facff2b96d9ce6e9bc68f94d04ea3) |
図表3 |
![224720-3.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/224720-3.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBcaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAMQdSzMvsyhw0gclM9FQvVK5VDvF7XnV1%2Fxbd6ZwwiHnAiEA31oz3FzplzFE9pQ2DjJ6y7cGTJQD8u57vnOfTtd5GRkqmQQIsP%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDE3Wuz50YuXgSiUOZirtAzUKosBdKliOdFZO3YiMB7ArtalaRa1jRt18MPgMQOVt5h7mvswjqeUQXYpJgPWKA5GlM0zly2az95dV4IAG4zq5%2BygS180G6LSxFFbkp6pd%2BcuUxFZr0T2JK0%2BV71CU%2F6kN0p6Ahpyzz8HKVCBzNdlT7J3AwBwTTOAw2s5%2BiEsP4ljQktC4pYEzixa2Is1i4ZWsx3k2mgFcg9aEsx%2FwyQOy%2Bma%2FWnBUTqQjdzMECC36Tz%2FeTHd7GieEEA54gxOnxDWpbLuthiHnJJOEpFjkx4f7xngJYqCriPBN4Rq%2BmGAylVrK%2FV7ixE9Qw2nZ96MWqL3%2BbIWeuV%2FA17KO70cberLDOI2Vt2ZlbDWJFaCM0NBZAp4m%2BYSAcxXMqodGgDdDPbQvVA0ZWSXPOck8xLTHTC4VuVnV5x2I35YV1oUEQmNVdJ8JXLt3X4CcedU3uwjT%2FnQoFEKf0nH3w3EY4BhW0a80wx0SbYT4%2F11S9PqKlCIaGPJXC4eFQpKHl8u2ocmZKMPGir9d85RTp05cwp4Sk%2FWGstuvf4QyFQalh%2FewgPPi%2BXdxqYyilCSvwobcwgI8iUTGq%2BsauAC%2BICnE496fG%2Fowb5QCA71Nxi90yPkRhGsqs4z%2BrxnKp6NSXFTklMnFKslhjvi%2FRPqzJKS162Aw%2B5yzswY6pQFqhbKVPThtIBlVzQeIxBR%2BC%2BNcvIW%2BAgNqHbTIDTLqOnFpDIyHkn2S7iT8Rg%2Fx75gDiPVwEodFKO9vQOiF8o94K4M8lZ7kIhFUKAYWa4Ukj08glQCV05InVUQ5Z2DtMYV4SM8d4pJa0eIxtrvFHYB8hL3YjGnY5WqsrHWTsQyPEAbTc5QFe1a0ytH5N55bb449t3Iw6hcvlE4bI7WlaNTC11CXAxY%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU3JILKDLF%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T232255Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=2af7020b856066c9e230febbfa68de63bc01a41fc28140d61f52dae987b13585) |
図表4 |
![224720-4.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/224720-4.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBcaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAMQdSzMvsyhw0gclM9FQvVK5VDvF7XnV1%2Fxbd6ZwwiHnAiEA31oz3FzplzFE9pQ2DjJ6y7cGTJQD8u57vnOfTtd5GRkqmQQIsP%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDE3Wuz50YuXgSiUOZirtAzUKosBdKliOdFZO3YiMB7ArtalaRa1jRt18MPgMQOVt5h7mvswjqeUQXYpJgPWKA5GlM0zly2az95dV4IAG4zq5%2BygS180G6LSxFFbkp6pd%2BcuUxFZr0T2JK0%2BV71CU%2F6kN0p6Ahpyzz8HKVCBzNdlT7J3AwBwTTOAw2s5%2BiEsP4ljQktC4pYEzixa2Is1i4ZWsx3k2mgFcg9aEsx%2FwyQOy%2Bma%2FWnBUTqQjdzMECC36Tz%2FeTHd7GieEEA54gxOnxDWpbLuthiHnJJOEpFjkx4f7xngJYqCriPBN4Rq%2BmGAylVrK%2FV7ixE9Qw2nZ96MWqL3%2BbIWeuV%2FA17KO70cberLDOI2Vt2ZlbDWJFaCM0NBZAp4m%2BYSAcxXMqodGgDdDPbQvVA0ZWSXPOck8xLTHTC4VuVnV5x2I35YV1oUEQmNVdJ8JXLt3X4CcedU3uwjT%2FnQoFEKf0nH3w3EY4BhW0a80wx0SbYT4%2F11S9PqKlCIaGPJXC4eFQpKHl8u2ocmZKMPGir9d85RTp05cwp4Sk%2FWGstuvf4QyFQalh%2FewgPPi%2BXdxqYyilCSvwobcwgI8iUTGq%2BsauAC%2BICnE496fG%2Fowb5QCA71Nxi90yPkRhGsqs4z%2BrxnKp6NSXFTklMnFKslhjvi%2FRPqzJKS162Aw%2B5yzswY6pQFqhbKVPThtIBlVzQeIxBR%2BC%2BNcvIW%2BAgNqHbTIDTLqOnFpDIyHkn2S7iT8Rg%2Fx75gDiPVwEodFKO9vQOiF8o94K4M8lZ7kIhFUKAYWa4Ukj08glQCV05InVUQ5Z2DtMYV4SM8d4pJa0eIxtrvFHYB8hL3YjGnY5WqsrHWTsQyPEAbTc5QFe1a0ytH5N55bb449t3Iw6hcvlE4bI7WlaNTC11CXAxY%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU3JILKDLF%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T232255Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=a6c853b2df782ca39ca4b8c99d67df066a9e99945f984c7e3b244c48bd74c9d5) |
図表5 |
![224720-5.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/224720-5.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBcaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAMQdSzMvsyhw0gclM9FQvVK5VDvF7XnV1%2Fxbd6ZwwiHnAiEA31oz3FzplzFE9pQ2DjJ6y7cGTJQD8u57vnOfTtd5GRkqmQQIsP%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDE3Wuz50YuXgSiUOZirtAzUKosBdKliOdFZO3YiMB7ArtalaRa1jRt18MPgMQOVt5h7mvswjqeUQXYpJgPWKA5GlM0zly2az95dV4IAG4zq5%2BygS180G6LSxFFbkp6pd%2BcuUxFZr0T2JK0%2BV71CU%2F6kN0p6Ahpyzz8HKVCBzNdlT7J3AwBwTTOAw2s5%2BiEsP4ljQktC4pYEzixa2Is1i4ZWsx3k2mgFcg9aEsx%2FwyQOy%2Bma%2FWnBUTqQjdzMECC36Tz%2FeTHd7GieEEA54gxOnxDWpbLuthiHnJJOEpFjkx4f7xngJYqCriPBN4Rq%2BmGAylVrK%2FV7ixE9Qw2nZ96MWqL3%2BbIWeuV%2FA17KO70cberLDOI2Vt2ZlbDWJFaCM0NBZAp4m%2BYSAcxXMqodGgDdDPbQvVA0ZWSXPOck8xLTHTC4VuVnV5x2I35YV1oUEQmNVdJ8JXLt3X4CcedU3uwjT%2FnQoFEKf0nH3w3EY4BhW0a80wx0SbYT4%2F11S9PqKlCIaGPJXC4eFQpKHl8u2ocmZKMPGir9d85RTp05cwp4Sk%2FWGstuvf4QyFQalh%2FewgPPi%2BXdxqYyilCSvwobcwgI8iUTGq%2BsauAC%2BICnE496fG%2Fowb5QCA71Nxi90yPkRhGsqs4z%2BrxnKp6NSXFTklMnFKslhjvi%2FRPqzJKS162Aw%2B5yzswY6pQFqhbKVPThtIBlVzQeIxBR%2BC%2BNcvIW%2BAgNqHbTIDTLqOnFpDIyHkn2S7iT8Rg%2Fx75gDiPVwEodFKO9vQOiF8o94K4M8lZ7kIhFUKAYWa4Ukj08glQCV05InVUQ5Z2DtMYV4SM8d4pJa0eIxtrvFHYB8hL3YjGnY5WqsrHWTsQyPEAbTc5QFe1a0ytH5N55bb449t3Iw6hcvlE4bI7WlaNTC11CXAxY%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU3JILKDLF%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T232255Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=d5b09fbf767ebe6280932fcd3bf5eb6f12f3cf5cef9ffb95a68a11d14c266280) |
図表6 |
![224720-6.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/224720-6.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBcaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAMQdSzMvsyhw0gclM9FQvVK5VDvF7XnV1%2Fxbd6ZwwiHnAiEA31oz3FzplzFE9pQ2DjJ6y7cGTJQD8u57vnOfTtd5GRkqmQQIsP%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDE3Wuz50YuXgSiUOZirtAzUKosBdKliOdFZO3YiMB7ArtalaRa1jRt18MPgMQOVt5h7mvswjqeUQXYpJgPWKA5GlM0zly2az95dV4IAG4zq5%2BygS180G6LSxFFbkp6pd%2BcuUxFZr0T2JK0%2BV71CU%2F6kN0p6Ahpyzz8HKVCBzNdlT7J3AwBwTTOAw2s5%2BiEsP4ljQktC4pYEzixa2Is1i4ZWsx3k2mgFcg9aEsx%2FwyQOy%2Bma%2FWnBUTqQjdzMECC36Tz%2FeTHd7GieEEA54gxOnxDWpbLuthiHnJJOEpFjkx4f7xngJYqCriPBN4Rq%2BmGAylVrK%2FV7ixE9Qw2nZ96MWqL3%2BbIWeuV%2FA17KO70cberLDOI2Vt2ZlbDWJFaCM0NBZAp4m%2BYSAcxXMqodGgDdDPbQvVA0ZWSXPOck8xLTHTC4VuVnV5x2I35YV1oUEQmNVdJ8JXLt3X4CcedU3uwjT%2FnQoFEKf0nH3w3EY4BhW0a80wx0SbYT4%2F11S9PqKlCIaGPJXC4eFQpKHl8u2ocmZKMPGir9d85RTp05cwp4Sk%2FWGstuvf4QyFQalh%2FewgPPi%2BXdxqYyilCSvwobcwgI8iUTGq%2BsauAC%2BICnE496fG%2Fowb5QCA71Nxi90yPkRhGsqs4z%2BrxnKp6NSXFTklMnFKslhjvi%2FRPqzJKS162Aw%2B5yzswY6pQFqhbKVPThtIBlVzQeIxBR%2BC%2BNcvIW%2BAgNqHbTIDTLqOnFpDIyHkn2S7iT8Rg%2Fx75gDiPVwEodFKO9vQOiF8o94K4M8lZ7kIhFUKAYWa4Ukj08glQCV05InVUQ5Z2DtMYV4SM8d4pJa0eIxtrvFHYB8hL3YjGnY5WqsrHWTsQyPEAbTc5QFe1a0ytH5N55bb449t3Iw6hcvlE4bI7WlaNTC11CXAxY%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU3JILKDLF%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T232255Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=c7773e2d2485a61bd3985439751b79859a486fd600749c655f0a8e4869c0454a) |
カテゴリ |
飼育技術
低コスト
肉牛
放牧技術
|