...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Revista Brasileira de Ciência Avícola >The Effect of Cyclic Heat Stress Applied to Different Broiler Chicken Brooding Stages on Animal Performance and Carcass Yield
【24h】

The Effect of Cyclic Heat Stress Applied to Different Broiler Chicken Brooding Stages on Animal Performance and Carcass Yield

机译：循环热应激应用于不同肉鸡育雏阶段对动物生产性能和Car体产量的影响

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

摘要

The objective of this study was to evaluate the performance and carcass yield of broilers submitted to heat stress during different rearing stages. A total of 840 one-day-old Cobb Avian48 TM male broilers were housed in an experimental house equipped with conventional ventilation system and foggers. Birds were distributed according to a completely randomized design into four treatments, with six replicates of 35 birds each. The treatments consisted of: T1 (control) - birds reared under natural temperature and relative humidity conditions from 1 to 42 days of age; T2 - birds submitted to heat stress (HS) from 16 to 21 days of age; T3 - birds submitted to HS from 22 to 42 days of age; and T4 - birds submitted to HS from 16 to 42 days of age. Birds were submitted to heat stress daily for one hour (12:00-13:00h).On day 42, performance data were determined. Six birds per replicate were selected and sacrificed to obtain carcass, parts, and giblet weights and yields. Performance parameters were not influenced by the treatments. Broilers submitted to 1-h cyclic heat between 16 and 42 days of age presented lower deboned breast weight compared with those maintained in natural temperature and relative humidity conditions. It was concluded that the performance of broilers submitted to short cyclic heat periods is not impaired.
机译：这项研究的目的是评估在不同饲养阶段遭受热应激的肉鸡的生产性能和car体产量。总共840只1天大的Cobb Avian48 TM雄性肉鸡被安置在装有常规通风系统和喷雾器的实验房中。按照完全随机的设计，将鸟类分配到四个处理中，每组35个鸟类进行六次重复。处理包括：T1（对照）-在自然温度和相对湿度条件下饲养1至42天的家禽; T2-禽类在16至21日龄时遭受热应激（HS）; T3-从22到42天的年龄提交给HS的鸟; T4-年龄在16至42天之间提交给HS的家禽。每天将禽类置于热应激下一小时（12：00-13：00h）。在第42天，测定了性能数据。每重复选择六只鸟并处死以得到car体，零件和细颈内脏的重量和产量。性能参数不受治疗的影响。与保持在自然温度和相对湿度条件下的肉鸡相比，在16至42天之间经受1小时循环热的肉鸡的去骨胸肉重量更低。得出的结论是，经受短周期热周期的肉鸡的性能没有受到损害。

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