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首页> 外文学位 >Feeder design (dry and wet/dry) and grain processing technology (grinding, pelleting, and expanding) on the performance of finishing pigs.
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Feeder design (dry and wet/dry) and grain processing technology (grinding, pelleting, and expanding) on the performance of finishing pigs.

机译：育肥猪性能的喂料器设计（干式和干式/干式）和谷物加工技术（研碎，制粒和膨化）。

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摘要

A series of finishing pig experiments were conducted to investigate the effects of feeder design and grain processing technology (grinding, pelleting, and expanding) on the growth performance, water usage, nutrient digestibility, stomach morphology, and carcass characteristics. A total of 360 finishing pigs were used in the first experiment to investigate the effects of feeder design (SmidleyRTM two hole dry feeder and Crystal Spring RTM single hole feeder) on the performance of pigs. Pigs on the Crystal Spring wet/dry feeder had the greatest rate ADG (P < .002) and ADFI (P < .003) with the lowest water usage (P < .001). In the second experiment, a total of 192 finishing pigs were used to determine the effects of feeder design and corn particle size (500 and 1,000 mum). Pigs on wet/dry feeder had the greater (P < .007) feed efficiency with decreased water usage (P < .001) compared to those on dry feeder. Fine corn particles improved feed efficiency (P < .07) as a result of increased DM (P < .04) and N (P < .001) digestibility compared to coarse corn particles. However, there was no interaction between feeder design and corn particles in the performance of pigs. In the third experiment, two consecutive studies were designed to investigate the effects of the expanding and pelleting processes on the performance of pigs and also to determine whether chemical changes or physical form of feed (meal or pellets) affects the performance of pigs with the use of the wet/dry feeder. A total of 208 and 160 pigs were used to the first and the second experiments. Treatments included meal, standard pellets, expandate, and expanded pellets in the first study. The same treatments were used in the second study except that all diets were reground. Hydrothermal processing (ungrounded or reground form) improved rate of gain, feed efficiency, and DM and N digestibility. Expanding process (expandate or expanded pellets, ungrounded or reground) improved feed efficiency compared to standard pelleting. The results of these experiments indicated that feeder design and grain processing technology mainly influenced on the performance of pigs.
机译：进行了一系列育肥猪实验，以研究饲喂器设计和谷物加工技术（研碎，制粒和膨化）对生长性能，水分利用，养分消化率，胃形态和car体特性的影响。在第一个实验中，总共使用了360头育肥猪来研究喂食器设计（SmidleyRTM两孔干喂食器和Crystal Spring RTM单孔喂食器）对生猪性能的影响。使用Crystal Spring湿/干喂食器的猪的ADG最高（P <.002），ADFI最高（P <.003），用水量最低（P <.001）。在第二个实验中，总共使用了192头育肥猪来确定喂食器设计和玉米粒度（500和1,000微米）的影响。与干式饲喂器相比，湿式/干式饲喂器的猪具有更高的饲喂效率（P <.007），用水量减少（P <.001）。玉米细粉提高了饲料效率（P <.07），这是因为与粗玉米相比，DM（P <.04）和N（P <.001）消化率提高了。但是，在猪的生产中，喂食器设计和玉米颗粒之间没有相互作用。在第三个实验中，设计了两个连续的研究，以研究膨化和制粒工艺对生猪性能的影响，并确定化学变化或饲料的物理形式（粉或粒状）是否会影响使用该生猪的性能。干/湿进料器的第一次实验和第二次实验总共使用了208头猪和160头猪。在第一个研究中，治疗包括进餐，标准颗粒，膨化和膨化颗粒。在第二项研究中使用了相同的治疗方法，只是所有饮食都被磨碎了。水热处理（未磨碎或再磨碎）提高了增产率，饲料效率以及DM和N的消化率。与标准制粒相比，膨胀工艺（膨胀或膨胀的颗粒，未研磨或再研磨）提高了饲料效率。这些实验结果表明，喂料器的设计和谷物加工技术主要影响猪的性能。

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  • 作者

    Amornthewaphat, Natchanok.;

  • 作者单位

    Kansas State University.;

  • 授予单位 Kansas State University.;
  • 学科 Agriculture Animal Culture and Nutrition.
  • 学位 Ph.D.
  • 年度 2001
  • 页码 88 p.
  • 总页数 88
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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