• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Poultry Science >Meat quality of slow- and fast-growing chicken genotypes fed low-nutrient or standard diets and raised indoors or with outdoor access
【24h】

Meat quality of slow- and fast-growing chicken genotypes fed low-nutrient or standard diets and raised indoors or with outdoor access

机译：饲喂低营养或标准饮食并在室内或室外饲养的慢速和快速生长基因型鸡肉的肉质

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

Consumer interest in free-range and organic poultry is growing. Two concurrent experiments were conducted to assess 1) the impact of alternative genotype and production system and 2) the impact of genotype and diet on meat quality of chickens for specialty markets. Specifically, a slow-growing genotype (slow) and a fast-growing genotype (fast) were raised for 91 and 63 d (females), respectively, or 84 and 56 d in the case of the second trial (males). In each trial, the slow birds were placed before the fast birds to achieve a similar final BW at processing. Each genotype was assigned to 4 pens of 20 birds each and raised in indoor floor pens in a conventional poultry research facility; each genotype was also assigned to 4 floor pens in a small facility with outdoor access. A low-nutrient diet was used, formulated for a slower rate of production. Birds were commercially processed and deboned at 4 h postmortem. In the second trial, the diets compared were a conventional diet that met NRC requirements or the low-nutrient diet, and all birds were raised indoors. There was an interaction between genotype and production system for the color (b*; P < 0.05). The meat and skin of the slow birds became more yellow when the birds had outdoor access; however, this did not occur when the fast birds had outdoor access. The breast meat of the slow birds had more protein and alpha-tocopherol (P < 0.05) than the fast birds and half the amount of fat (P < 0.05). In addition, the meat of the outdoor birds had more protein than the indoor birds (P < 0.05). The slow birds had poorer water-holding capacity but were more tender than the fast birds (P < 0.05). The type of diet had little impact on meat quality. These data indicate that meat quality differences exist between genotypes with different growth rates and raised in alternative production systems.
机译：消费者对放养和有机家禽的兴趣正在增长。进行了两个同时进行的实验，以评估1）替代基因型和生产系统的影响，以及2）基因型和饮食对专业市场的鸡肉肉质的影响。具体而言，缓慢生长的基因型（慢）和快速生长的基因型（快）分别升高了91和63 d（女性），而第二次试验（男性）则升高了84和56 d。在每个试验中，将慢禽放在快禽之前，以在加工时达到类似的最终体重。将每种基因型分配给4只圈养的家禽，每只圈养20只鸡，并在常规家禽研究设施的室内地面圈养。在一个具有室外通道的小型设施中，每种基因型也被分配给了4只地板笔。使用了低营养饮食，以降低生产速度。商业化处理禽鸟，并在死后4小时将其去骨。在第二项试验中，比较的饮食是满足NRC要求的常规饮食或低营养饮食，所有鸟类都在室内饲养。颜色的基因型和生产系统之间存在相互作用（b *; P <0.05）。当慢禽进入室外时，它们的肉和皮肤会变黄。但是，当快鸟可以进入室外时，不会发生这种情况。与慢禽相比，慢禽的胸肉含有更多的蛋白质和α-生育酚（P <0.05），而脂肪则少一半（P <0.05）。此外，室外禽类的肉比室内禽类的蛋白质含量更高（P <0.05）。慢鸟的持水能力较差，但比快鸟更嫩（P <0.05）。饮食类型对肉质影响很小。这些数据表明，不同生长速度的基因型之间存在肉质差异，并且在替代生产系统中存在差异。

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