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首页> 外文学位 >Layer performance, yolk cholesterol, eggshell quality, and pancreatic amylase and lipase contents as affected by probiotic and prebiotic dietary supplementation.
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Layer performance, yolk cholesterol, eggshell quality, and pancreatic amylase and lipase contents as affected by probiotic and prebiotic dietary supplementation.

机译：益生菌和益生元饮食补充剂影响蛋鸡的蛋鸡性能，蛋黄胆固醇，蛋壳质量以及胰淀粉酶和脂肪酶含量。

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摘要

Studies were conducted to investigate the effects of probiotic, oligofructose-type prebiotic, and inulin-type prebiotic supplementations on layer performance, cholesterol balance, and albumen duality of laying hens at two different ages. The effects of probiotic and both prebiotic dietary supplementations on amylase and lipase contents in pancreas and total yolk fat contents were also explored in old layers (57-wk). The probiotic group contained 5.0% (W/W) Ecozyme RTM. The oligofructose-type prebiotic group contained 1.0% (W/W) RaftiloseRTM. The inulin-type prebiotic group contained 1.3% (W/W) RaftifeedRTM. Twenty birds were assigned with two birds per cage. The birds were fed their assigned diets ad libitum and had free access to water for four weeks during feeding period. A regimen of 16h light: 8h dark/day was provided throughout the experiment study, which last for 4 weeks.;Supplementing probiotic, oligofructose-type prebiotic and inulin-type prebiotic supplementations increased (P 0.05) egg production and cumulative egg weight per bird for both young (27-wk) and old (57-wk) layers, but old layers showed greater increases than young layers. Improvements (P 0.05) of feed conversion ratios were also observed in old layers fed probiotic and both prebiotic supplementations. Regardless of bird's age, there were no (P > 0.05) differences on average egg weight and albumen quality initially as well as upon storage. Supplementing layers with probiotic, oligofructose-type prebiotic, and inulin-type prebiotic supplementations increased (P 0.05) unabsorbable cholesterol levels in jejunum contents and cholesterol excreta, and simultaneously decreased (P 0.05) serum and yolk cholesterol contents. Similarly, a greater effect for yolk cholesterol reduction was also observed in old layers.;Addition of probiotic, oligofructose-type prebiotic, and inulin-type prebiotic supplementations into the basal diet increased (P 0.05) pancreatic amylase contents and decreased (P 0.05) pancreatic lipase contents, abdominal fat pat percentage, and total fat contents in yolks of old layers as compared with those of the controls. Increased (P 0.05) serum glucose levels and protein levels in jejunum contents were also recorded when feeding old layers with probiotic and both prebiotic products. In addition, oligofructose-type and inulin-type prebiotic dietary supplementations increased (P 0.05) serum calcium levels and improved (P 0.05) the eggshell strength and tibia ash, calcium, and phosphorus contents in old layers.
机译：进行研究以研究益生菌，低聚果糖型益生元和菊粉型益生元补充剂对两个不同年龄的蛋鸡产蛋性能，胆固醇平衡和蛋白二象性的影响。还研究了旧层（57周）中益生菌和益生元膳食补充剂对胰腺淀粉酶和脂肪酶含量以及总蛋黄脂肪含量的影响。益生菌组包含5.0％（W / W）的Ecozyme RTM。低聚果糖型益生元组包含1.0％（W / W）的RaftiloseRTM。菊粉型益生元组包含1.3％（W / W）的RaftifeedRTM。分配了20只鸟，每个笼子有两只鸟。随意喂食指定的饮食，喂食期间可自由饮水四个星期。在整个实验研究中，提供16小时光照的方案：每天8小时黑暗/天，持续4周。;补充益生菌，低聚果糖型益生元和菊粉型益生元补充剂可增加（P <0.05）产蛋量和每单位累积蛋重幼鸽（27周）和老年鸽（57周）的鸟类，但老年蛋鸡比幼鸽蛋鸡增加更多。在饲喂益生菌和添加益生元的旧蛋鸡中也观察到饲料转化率的提高（P <0.05）。不论禽鸟的年龄，最初以及储存时，平均蛋重和蛋白质量均无（P> 0.05）差异。益生菌，低聚果糖型益生元和菊粉型益生元补充剂的添加层增加了空肠和胆固醇排泄物中不可吸收的胆固醇水平（P <0.05），同时降低了血清和蛋黄胆固醇的含量（P <0.05）。同样，在旧蛋鸡中也观察到了降低蛋黄胆固醇的更大效果。;在基础饮食中添加益生菌，低聚果糖型益生元和菊粉型益生元补充剂可增加（P <0.05）胰腺淀粉酶含量，并降低（P < 0.05）与对照组相比，旧蛋黄中的胰腺脂肪酶含量，腹部脂肪拍数百分比和总脂肪含量。用益生菌和两种益生元产品饲喂旧蛋鸡时，空腹血清中的血糖水平和蛋白质水平也升高（P <0.05）。此外，低聚果糖型和菊粉型益生元膳食补充剂可增加（P <0.05）血清钙水平，并改善（P <0.05）蛋壳强度以及旧蛋鸡胫骨灰分，钙和磷的含量。

著录项

  • 作者

    Chen, Yi-Chen.;

  • 作者单位

    Mississippi State University.;

  • 授予单位 Mississippi State University.;
  • 学科 Agriculture Food Science and Technology.;Agriculture Animal Culture and Nutrition.;Biology Microbiology.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 138 p.
  • 总页数 138
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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