...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Turkish Journal of Veterinary and Animal Sciences >Effects of supplemental dietary chromium on yield and nutrient digestibility of laying hens under low temperature.
【24h】

Effects of supplemental dietary chromium on yield and nutrient digestibility of laying hens under low temperature.

机译：低温补充膳食铬对蛋鸡产量和养分消化率的影响。

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

This study was conducted to determine the effects of chromium picolinate (CrPi) added into diet containing 710.3 ppb chromium on yield and nutrient digestibility of laying hens at low temperature. Forty-six-week-old laying hens were randomly assigned to four groups of 30 hens per group. Treatment groups were fed different supplemental dietary chromium levels. Thus, hens were fed diets with no supplemental chromium (Control Group), 100 ppb of supplemental chromium (100 Group), 200 ppb of supplemental chromium (200 Group) and 400 ppb of supplemental chromium (400 Group). Diet chromium concentration was detected by graphite furnace atomic absorption spectroscopy. Body weight, feed efficiency and egg production increased both linearly (P < 0.001) andquadratically (P < 0.001) in laying hens at low temperature by supplemental dietary CrPi. However, feed intake, egg weight, egg shell thickness, egg shell weight, egg specific gravity and egg formation were not influenced by supplemental dietary CrPi (P> 0.05). Digestibility of dry matter, organic matter, ether extract, crude protein, crude fibre and nitrogen free extract increased linearly (P < 0.01) and quadratically (P < 0.01) by supplemental dietary CrPi in laying hens under cold conditions (P < 0.01). These results indicated that supplemental dietary CrPi increased yield and nutrient digestibility in laying hens at low temperature.
机译：这项研究旨在确定添加710.3 ppb铬的日粮中添加的吡啶甲酸铬（CrPi）对蛋鸡在低温下的产量和营养消化率的影响。将四十六周龄的蛋鸡随机分为四组，每组30只。给治疗组饲喂不同的膳食补充铬水平。因此，母鸡饲喂的饲料中不含补充铬（对照组），100 ppb补充铬（100组），200 ppb补充铬（200组）和400 ppb补充铬（400组）。通过石墨炉原子吸收光谱法检测日粮中铬的浓度。通过补充膳食CrPi在低温下产蛋母鸡的体重，饲料效率和产蛋率均线性增加（P <0.001）和二次增加（P <0.001）。然而，饲料中CrPi对饲料的采食量，蛋重，蛋壳厚度，蛋壳重量，蛋比重和蛋的形成没有影响（P> 0.05）。在寒冷条件下，补充膳食CrPi可使蛋鸡的干物质，有机物，乙醚提取物，粗蛋白，粗纤维和无氮提取物的消化率线性增加（P <0.01）和二次增加（P <0.01）。这些结果表明，补充饮食中的CrPi可以提高蛋鸡的低温产量和养分消化率。

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