• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Animal Nutrition >Xylanase protease and superdosing phytase interactions in broiler performance carcass yield and digesta transit time
【2h】

Xylanase protease and superdosing phytase interactions in broiler performance carcass yield and digesta transit time

机译：木聚糖酶蛋白酶和超剂量植酸酶相互作用对肉鸡生产性能car体产量和消化消化时间的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The interaction of xylanase, protease and superdosing (1,500 FTU/kg) phytase in a 2 × 2 × 2 factorial arrangement was studied in broilers fed sorghum-based diets. A total of 2,800 one-day-old unsexed Ross 308 chicks were housed in 56 pens with 50 birds per pen, with or without inclusion of xylanase, protease and phytase, totaling 8 treatments and 7 replicates per treatment. Body weight (BW) and feed intake (FI) were measured at 21 and 42 days of age, and mortality corrected feed conversion ratio (FCR) was calculated for each period and cumulatively. Tibia ash and carcass yield were determined in 2 birds per replicate at 21 and 42 days of age, respectively. Digesta transit time was determined at 21, 28, 35 and 42 days of age using 5 birds per replicate. Results showed that superdosing phytase increased BW and FI at 42 days of age (P < 0.05) and xylanase improved FCR (P < 0.05). Xylanase and phytase also positively influenced carcass yield and breast weight, respectively. Overall, inclusion of superdosing phytase increased transit time when included in a diet containing xylanase, and no change with protease inclusion. In conclusion, the beneficial effects of xylanase, protease and superdosing phytase in broiler performance were not additive. This limitation is likely not related to the lack of efficacy of any one of the individual enzymes but to a limitation of the bird to respond additively to successive additions of enzymes.
机译：在以高粱为基础饲喂的肉鸡中研究了木聚糖酶，蛋白酶和超剂量（1,500 FTU / kg）植酸酶在2×2×2因子排列中的相互作用。将总共​​2,800只1日龄的未性别的Ross 308小鸡关在56圈中，每只圈养50只禽，有或没有木聚糖酶，蛋白酶和植酸酶，总共8种处理，每处理7个重复。在21日和42日龄时测量体重（BW）和采食量（FI），并针对每个时期并累计计算死亡率校正的饲料转化率（FCR）。分别在21日和42日龄时每只重复的2只鸟中测定了胫骨灰和yield体产量。在21、28、35和42日龄时，每重复5只鸟来确定消化时间。结果显示，超剂量肌醇六磷酸酶可增加42天龄的体重和FI（P <0.05），木聚糖酶可改善FCR（P <0.05）。木聚糖酶和植酸酶也分别对yield体产量和乳房重量产生积极影响。总体而言，当包含木聚糖酶的日粮中添加超剂量肌醇六磷酸酶会增加运输时间，而蛋白酶的添加则无变化。总之，木聚糖酶，蛋白酶和超剂量肌醇六磷酸酶对肉鸡生产的有益作用不是累加的。这种局限性可能与缺乏任何一种单独酶的功效无关，而与家禽对连续添加酶的加性反应的局限性无关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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