美国东部肉牛生产的管理特点

Senorpe Asem-Hiablie , C. Alan Rotz , Robert Stout , Sara Place
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引用次数: 11

摘要

作为美国牛肉可持续发展计划的一部分,对区域牛肉生产实践进行了全国性的表征。通过自愿调查和在东北部和东南部(研究的7个产牛地区中的最后一个)进行实地考察,收集了有关牛生产实践的数据。参与调查的农场和牧场(n = 817)分别占东北部和东南部肉牛的1.2%和1.0%。来自肥育作业(n = 55)的回应分别占东北部和东南部饲养牛的4%和23%。报道的畜群规模东南部大于东北部;然而,放养率是相似的。东南地区的牛/牛比例略高,两个地区的替代小母牛比例相当。与较温暖的东南部相比,东北地区的补充饲料生产和室内饲养更为普遍,东南部的放牧期可能更长。据报道,东南部的饲养场较少,大多数是背景设施。在草地上完成比赛在东部比在其他地区更为普遍。调查对象估计的采食量在各地区具有可比性,但相对而言,东北部以青贮饲料为主,而东南部以干草为主。在这两个地区,生产牛饲料的农田接收了大部分的肥料,尽管有25%的肥料被制成堆肥并在东北出售。还从各种操作类型中收集了劳动力、设备和能源使用信息。收集的数据有助于指导开发用于牛肉生命周期评估的代表性生产系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Management characteristics of beef cattle production in the eastern United States

As part of the United States Beef Sustainability Program, a nationwide characterization of regional beef production practices was conducted. Data on cattle production practices were gathered through voluntary surveys and on-site visits in the Northeast and Southeast, the last of 7 cattle-producing regions studied. Participating farms and ranches (n = 817) represented 1.2 and 1.0% of beef cows in the Northeast and Southeast, respectively. Responses from finishing operations (n = 55) represented 4 and 23% of cattle fed in the Northeast and Southeast, respectively. Herd sizes reported were larger in the Southeast than in the Northeast; however, stocking rates were similar. Cow-to-bull ratios were slightly greater in the Southeast, and the proportions of replacement heifers were comparable in both regions. Supplemental feed production and indoor housing were more prevalent in the Northeast compared with the warmer Southeast, where longer grazing periods were possible. Fewer feedlots were reported in the Southeast, with most being backgrounding facilities. Finishing on grass was more common in the east than in other regions. Feed intake estimated by survey respondents was comparable across regions, but relatively more silage was fed in the Northeast, whereas hay was dominant in the Southeast. Cropland producing cattle feed received most of the manure in both regions, although 25% was composted and sold in the Northeast. Labor, equipment, and energy use information was also gathered from the various operation types. The data collected help guide the development of representative production systems used in the life cycle assessment of beef.

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