...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Poultry Science >Opportunities for exercise during pullet rearing, Part I: Effect on the musculoskeletal characteristics of pullets
【24h】

Opportunities for exercise during pullet rearing, Part I: Effect on the musculoskeletal characteristics of pullets

机译：牵引过程中锻炼的机会，第一部分：对毛圈肌肉骨骼特征的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Increased load-bearing exercise improves bone quality characteristics in a variety of species, including laying hens. Providing increased opportunities for exercise during the pullet rearing phase, a period of substantial musculoskeletal growth, offers a proactive approach to reducing osteoporosis by improving bone composition. The main objective of this study was to determine whether differing opportunities for exercise during rearing influences pullet musculoskeletal characteristics. Two flock replicates of 588 Lohmann Selected Leghorn-Lite pullets were reared in either standard, conventional cages (Conv) or an aviary rearing system (Avi) from day-old chicks until 16 wk of age. The keel bone and the muscles and long bones of the wings and legs were collected at 16 wk to measure muscle growth differences between rearing treatments and quantify bone quality characteristics using quantitative computed tomography (QCT) and bone breaking strength (BBS) assessment. Keel bone characteristics and muscle weights were adjusted for BW and analyses for QCT and BBS included BW as a co-variate. At 16 wk of age, rearing system had an effect on the majority of keel bone characteristics (P 0.05). The length of the keel metasternum, caudal tip cartilage length, and the overall percentage of cartilage present on the keel at 16 wk was greater in the Avi pullets compared to the Conv pullets (P 0.01). Wing and breast muscle weights of the Avi pullets were greater than the Conv pullets (P 0.001), but leg muscle weights were greater in the Conv pullets (P = 0.026). Avi pullets had greater total bone density, total cross-sectional area, cortical cross-sectional area, total bone mineral content, and cortical bone mineral content than Conv pullets for the radius, humerus, and tibia (P 0.001). Avi pullets had greater BBS compared to the Conv pullets for the radius, humerus, and tibia (P 0.01). Increased opportunities for exercise offered by the aviary rearing system increased muscle and bone growth characteristics in pullets at 16 wk of age.
机译：增加的承重运动增加了各种物种的骨质特征，包括铺设母鸡。在Pullet饲养阶段提供增加的运动机会，一段大量的肌肉骨骼生长，提供了通过改善骨组合物来减少骨质疏松症的主动方法。本研究的主要目的是确定在饲养期间运动的不同机会是否影响了Pullet肌肉骨骼特征。从一天大的小鸡的标准，常规笼子（CONV）或禽类饲养系统（AVI）饲养了588号LOHMANN选定的leghorn-Lite案例的两只植物复制，直到16周为16岁。在16周下收集龙骨骨和翅膀和腿部的肌肉和长骨头，以测量饲养处理之间的肌肉生长差异，并使用定量计算断层扫描（QCT）和骨断裂强度（BBS）评估来定量骨质特征。调节龙骨骨骼特征和肌肉重量，用于BW和QCT分析，BBS包括BW作为共变体。在16周的年龄时，饲养系统对大多数龙骨骨特征有影响（P <0.05）。与COMM牵胎相比AVI牵胎的翼和乳房肌肉重量大于CONC左螺母（P <0.001），但在CONC左侧的腿部肌肉重量更大（P = 0.026）。 AVI Pullets的总骨密度更大，总横截面积，皮质横截面积，总骨矿物质含量和皮质骨矿物质含量，而不是用于半径，肱骨和胫骨（P <0.001）。与半径，肱骨和胫骨的CONC PURLET相比，AVI PURLET具有更大的BBS（P <0.01）。增加了禽流饲养系统提供的运动机会，增加了16周龄左右的羊毛和骨骼生长特征。

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