Effects of particle size and drying methods of corn on growth performance, digestibility and haematological and immunological characteristics of weaned piglets
Effects of particle size and drying methods of corn on growth performance, digestibility and haematological and immunological characteristics of weaned piglets
复制标题
玉米粒度和干燥方式对断奶仔猪生长性能、消化率及血液免疫特性的影响
DOI：
10.1080/1745039x.2014.1002673
复制
发表时间：
2015-01-02
影响因子：
2
通讯作者：
Ma, Xi
中科院分区：
文献类型：
--
作者：
Huang, Chang;Zang, Jianjun;Ma, Xi
本研究旨在探讨玉米颗粒大小及干燥方式对断奶仔猪生长性能的影响。将杂交断奶仔猪（n=192; Durocx Landracex Large白色）分配至4个处理组之一（2x2析因排列）。所有仔猪均饲喂玉米-豆粕日粮，处理为（1）热风干燥和粗磨玉米，（2）热风干燥和细磨玉米，（3）晒干和粗磨玉米和（4）晒干和细磨玉米。试验结果表明，细磨玉米（FGC）能提高仔猪的生产性能。此外，FGC提高了总能（GE）和乙醚提取物（EE）的表观全消化道消化率（ATTD），但干燥方式对仔猪生产性能和ATTD没有影响。此外，较小的颗粒尺寸显着降低肠道通透性，这也不受干燥方法的影响。FGC增加了白色血细胞总数，但未增加其他血液参数。最后，血清白细胞介素-1的水平下降，细磨和血清肿瘤坏死因子α的水平下降，太阳干燥。相反，断奶仔猪的这些特征几乎不受玉米干燥方法或其与研磨方法的相互作用的影响。
The objective of this study was to evaluate the effects of particle size and drying methods of corn on growth performance of weaned piglets. Crossbreed weaned piglets (n=192; DurocxLandracexLarge White) were assigned to one of four treatments (2x2 factorial arrangement). All piglets were fed corn-soybean meal diets and treatments were (1) hot air-dried and coarsely ground corn, (2) hot air-dried and finely ground corn, (3) sun-dried and coarsely ground corn and (4) sun-dried and finely ground corn. The results showed that finely ground corn (FGC) improved the performance of piglets. Additionally, the apparent total tract digestibility (ATTD) of gross energy (GE) and ether extract (EE) were increased by FGC, but the drying methods did not affect the performance of piglets or ATTD. Furthermore, smaller particle size significantly decreased the intestinal permeability, which was also not influenced by drying methods. FGC increased the total number of white blood cells, but not other blood parameters. Finally, the level of serum interleukin-1 was decreased by fine grinding and that of serum tumour necrosis factor alpha was decreased by sun drying. Conversely, these characteristics of weaned piglets can hardly have been affected either by the corn drying method or its interaction with grinding methods.