• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of sheep and wool science >Regional distribution of medullated fibres in Merino fleeces and relationship with birth coat halo-hair.
【24h】

Regional distribution of medullated fibres in Merino fleeces and relationship with birth coat halo-hair.

机译：美利奴羊毛中有髓纤维的区域分布及其与出生时光晕的关系。

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

Problems arising in wool processing from medullated fibres in Merino wool has recently become an issue, primarily due to crossbreeding with highly medullated meat sheep breed types. Since medullation forms a minor component of Merino wool, metrology research has to determine thresholds in raw wool that coincide with potential faults in fabric. This study reports on the application of OFDA100 and the AWTA Ltd. tests for measuring medullated fibre in wool. These results are used to show variation in fleeces between 3 body sites (mid-side, mid-dorsal neck and central lower leg) and the relationships of medullated fibres with halo-hairs visible on the Merino lamb's birth coat. The rear leg wool sample had the highest concentration of medullated fibres although the dorsal, neck site had higher concentrations of short medullation (3-10mm) and flat medullated fibres than the midside. Medullated fibre content at the second shearing (16-months of age) was associated with higher levels of halo-hairs in the birth coat. Lambs showing halo-hair can be relatively common within Merino flocks so the question remains whether direct selection against this feature is warranted. A wider and more detailed investigation using industry Merino flocks, together with processing evaluation, is required to determine the merit of selecting against the presence of halo-hair on Merino lambs and/or measured medullated fibre.
机译：美利奴羊毛中有丝状纤维的羊毛加工中出现的问题最近成为一个问题，这主要是由于与高度有髓的肉羊品种类型的杂交。由于延髓是美利奴羊毛的一小部分，因此计量学研究必须确定与织物潜在缺陷相吻合的原羊毛阈值。这项研究报告了OFDA100和AWTA Ltd.测试在测量羊毛中的有髓纤维方面的应用。这些结果用于显示三个身体部位（中侧，中背颈和小腿中部）之间的羊毛变化，以及在美利奴羊羔的出生外套上可见髓质纤维与光头的关系。后腿羊毛样品的髓质纤维浓度最高，尽管背部，颈部的短髓质（3-10mm）和扁平的髓质纤维的浓度高于中侧。第二次剪切时（16个月大）的有髓纤维含量与出生衣中较高的光晕毛发含量有关。在美利奴羊群中，有光晕毛的羔羊可能比较常见，因此问题仍然存在，是否有必要针对此特征直接选择。需要使用工业美利奴羊群进行更广泛，更详细的调查，并进行加工评估，以确定针对美利奴羊羔和/或经测量的有髓纤维上的光晕毛发进行选择的优点。

著录项

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