• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of dairy research >Investigating cow-calf contact in a cow-driven system: performance of cow and calf
【24h】

Investigating cow-calf contact in a cow-driven system: performance of cow and calf

机译：在牛驱动系统中调查牛犊接触：牛和小腿的性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this research communication we describe the performance of dairy cow-calf pairs in two cow-driven CCC-systems differing in cows' access to the calves through computer-controlled access gates (smart gates, SG). We investigated cows' machine milk yield in the automatic milking sys-tem (AMS), calf growth, and intake of supplemental milk and concentrate. Two groups each with four cow-calf pairs were housed in a system with a cow area, a calf creep and a meeting area. SG's controlled cow traffic between the meeting area and the cow area where cows could obtain feed, cubicles and the AMS. Calves had ad libitum access to supplemental milk and concentrate. During the suckling phase of 31 d, cow access to the meeting area was free 24 h/d (group 1) or restricted (group 2) based on milking permission. Following the suckling phase, cow access was gradually decreased over 9 d (separation phase). During the suckling phase, cows' machine milk yield (mean±SD) in the AMS was 11.4 ± 6.38 kg/d. In the separation phase, the yield increased to 25.0 ± 10.37 kg/d. Calf average daily gain (ADG) was high during the suckling phase: 1.2 ± 0.74 kg. During the separation phase, ADG decreased to 0.4 ± 0.72 kg which may be related to a low intake of supplemental milk. Calves' concentrate intake increased with age, and all calves consumed >1 kg/d after separation. We conclude that cows nurse the calf in a cow-directed CCC system well resulting in high ADG, and AMS milk yields were, at least, par-tially maintained during the suckling phase. Although the AMS yields increased in response to separation, calf ADG was decreased. A low sample size limits interpretation beyond description but provides a basis for hypotheses regarding future research into CCC-systems.
机译：在这项研究中，我们描述了通过计算机控制的访问门（Smart Gates，SG）在两台牛驱动的CCC系统中达到奶牛驱动的CCC系统中的乳制品牛犊对的表现。我们调查了自动挤奶系统（AMS），小牛生长和摄入补充牛奶和浓缩物中的奶牛奶产率。每个有四个牛犊对的两组都被安置在一个带牛面积的系统中，小牛蠕变和会议区域。 SG在会议区和牛面积之间的控制牛流量，奶牛可以获得饲料，小隔间和AMS。小牛的利用可以获得补充牛奶和浓缩物。在31天的哺乳期期间，基于挤奶许可，牛进入会议区域的婴儿进入24h / d（第1组）或限制（第2组）。在哺乳期之后，牛进入超过9d（分离阶段）逐渐降低。在哺乳期期间，AMS中的奶牛奶产率（平均值±SD）为11.4±6.38 kg / d。在分离阶段，产率增加到25.0±10.37kg / d。在哺乳期期间，小腿平均每日增益（ADG）高：1.2±0.74千克。在分离阶段期间，ADG降至0.4±0.72kg，其可能与额外的补充牛奶的摄入量有关。犊牛的浓缩物摄入量随着年龄的增长而增加，分离后所有的小腿都消耗> 1 kg / d。我们得出结论，奶牛在牛导向的CCC系统中的小牛，导致高ADG，并且AMS牛奶产率至少在乳酸相期间保持均匀。虽然AMS产量随着分离的反应而增加，但小牛ADG减少了。低样本大小限制解释超越描述，但为未来研究CCC系统提供了基础。

著录项

  • 来源
    《Journal of dairy research》 |2021年第1期|56-59|共4页
  • 作者

    Julie Foske Johnsen; Stine Granmo Kischel; Maren Saetervik Rognskog; Inga Vagle; Juni Rosann Engelien Johanssen; Lars Erik Ruud; Sabine Ferneborg;

  • 作者单位

    Section of Terrestrial Animal Health and Welfare Norwegian Veterinary Institute Oslo Norway;

    Department of Research and Development Farm Advisory Services TINE SA As Norway;

    Department of Animal and Aquacultural Sciences Faculty of Biosciences Norwegian University of Life Sciences As Norway;

    Department of Animal and Aquacultural Sciences Faculty of Biosciences Norwegian University of Life Sciences As Norway;

    Norwegian Centre of Organic Agriculture Tingvoll Norway;

    Department of Agricultural Sciences Inland Norway University of Applied Sciences Elverum Norway;

    Department of Animal and Aquacultural Sciences Faculty of Biosciences Norwegian University of Life Sciences As Norway;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    activity; calf growth; suckling; welfare;

    机译：活动;小牛增长;乳;福利;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号