4313ICS CCS 65.020.01 B 43 DB4313/T0002—2023 2023-03发布-15 2023-03实施-15娄 底 市 地 方 标 准 发 布娄底市农业农村局娄底市市场监督管理局“湘中黑牛”繁育技术规程 Technical Regulation of Breeding for Xiangzhong black cattle DB4313/T 0002—2023 I 目 次 前言 ································ ································ ································ ························ Ⅲ 1 范围 ································ ································ ································ ····················· 1 2 规范性引用文件 ································ ································ ································ ······ 1 3 术语和定义 ································ ································ ································ ············ 1 4 繁育程序 ································ ································ ································ ··············· 2 5 杂交改良 ································ ································ ································ ··············· 4 5.1 引入品种 ································ ································ ································ ········· 4 5.2 杂交亲本选择 ································ ································ ································ ··· 4 5.3 巫陵牛改良 ································ ································ ································ ······ 4 6 品种选育 ································ ································ ································ ··············· 4 6.1 横交固定 ································ ································ ································ ········· 4 6.2 选种 ································ ································ ································ ··············· 4 6.3 选配 ································ ································ ································ ··············· 4 6.4 扩繁提高 ································ ································ ································ ········· 4 7 发情鉴定 ································ ································ ································ ··············· 5 7.1 发情周期 ································ ································ ································ ········· 5 7.2 发情持续期 ································ ································ ································ ······ 5 7.3 鉴定方法 ································ ································ ································ ········· 5 8 配种 ································ ································ ································ ····················· 5 8.1 配种时间 ································ ································ ································ ········· 5 8.2 配种方式 ································ ································ ································ ········· 6 9 妊娠与分娩 ································ ································ ································ ············ 6 9.1 孕期饲养管理 ································ ································ ································ ··· 6 9.2 预产期 ································ ································ ································ ············ 6 9.3 接产 ································ ································ ································ ··············· 6 9.4 产后护理 ································ ································ ································ ········· 6 10 犊牛护理 ································ ································ ································ ·············· 6 10.1 出生 ································ ································ ································ ·············· 6 10.2 吮乳 ································ ································ ································ ·············· 6 10.3 饲喂 ································ ································ ································ ·············· 7 10