• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Influence of maternal flock age, maternal trace mineral nutrition and incubation temperature on bone development of embryos and chicks.
【24h】

Influence of maternal flock age, maternal trace mineral nutrition and incubation temperature on bone development of embryos and chicks.

机译：母羊年龄，母体微量矿物质营养和孵化温度对胚胎和雏鸡骨骼发育的影响。

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

At hatch, the skeleton of the chick is a well formed miniature of that in the adult bird; this is the end result of 21 days of development in the egg. In order to build a strong and healthy skeletal frame, the embryo relies on trace minerals (TM) deposited in the egg by the hen. The temperature at which the embryo grows is also a key factor influencing skeletal development. The overall purpose of this research was to understand the effects of maternal trace mineral nutrition on embryonic and post-hatch bone development and to investigate the relationship between temperature and bone characteristics. Mineral content in the egg and embryonic and post-hatch bone characteristics of embryos and chicks from Young (32 week), Mid (45 week) and Old (59 week) hens were not influenced when hens were supplemented with low levels of organic (OTM) copper, zinc and manganese relative to TM sulfates (ITM) at industry levels (Control). High ITM levels increased bone strength at hatch relative to Control but not relative to OTM; at hatch OTM widen bones from Young hens relative to all diets. Therefore, an opportunity exists for industry to reduce TM levels by supplementing OTM. As hens aged, the yolk Zn and Cu content increased and embryos from Young hens had reduced proportion of calcified tibia and femur relative to those from Older hens at day 20th of incubation and weaker bones at hatch. In another study, an incubator temperature of 36.0°C applied from the 15th day of incubation until hatch increased bone strength relative to 37°C. High eggshell temperature is negatively associated with bone calcification and strength. If the stronger bones at placement in the barn increased chick mobility then water consumption and access to nutrients important for post-hatch bone growth could be increased and this might decrease future bone problems. In summary, considerable maternal age and incubator temperature variation existed on skeletal growth of the progeny, demonstrating that there may be opportunities to use maternal nutrition and hatchery management to increase skeletal health in chicks at hatch, especially those from young flocks.
机译：在孵化过程中，雏鸡的骨骼是成年鸟骨骼的精巧结构。这是鸡蛋发育21天的最终结果。为了建立坚固健康的骨骼框架，胚胎依靠母鸡在卵中沉积的微量矿物质（TM）。胚胎生长的温度也是影响骨骼发育的关键因素。这项研究的总体目的是了解母体微量矿物质营养对胚胎和孵化后骨骼发育的影响，并研究温度与骨骼特征之间的关系。当向母鸡补充低水平有机物（OTM）时，未成年（32周），中（45周）和中年（59周）母鸡的鸡蛋中的矿物质含量以及胚胎和雏鸡的胚胎和雏鱼骨特性均未受到影响。 ）相对于工业水平上的TM硫酸盐（ITM）而言，铜，锌和锰（对照）。高ITM水平相对于对照（而非OTM）增加了孵化时的骨骼强度；在孵化场OTM可以使幼鸡的骨头相对于所有饮食都变宽。因此，工业上存在通过补充OTM降低TM含量的机会。随着年龄的增长，在孵化第20天时，相对于大龄母鸡而言，蛋黄中的锌和铜含量增加，幼小母鸡的胚胎钙化胫骨和股骨的比例降低，而孵化时骨骼则较弱。在另一项研究中，从孵化的第15天开始，直到孵化增加相对于37°C的骨强度，孵化器的温度为36.0°C。高蛋壳温度与骨骼钙化和强度负相关。如果放置在谷仓中的强壮骨骼增加了雏鸡的活动能力，那么可能会增加耗水量和对孵化后骨骼生长至关重要的养分的获取，这可能会减少未来的骨骼问题。总之，子代骨骼生长中存在相当大的母体年龄和孵化器温度变化，表明可能有机会利用母体营养和孵化场管理来提高孵化雏鸡的骨骼健康，尤其是雏鸡。

著录项

  • 作者

    Araujo Torres, Cibele.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Agriculture Animal Culture and Nutrition.;Health Sciences Human Development.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 183 p.
  • 总页数 183
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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