Phytogenic Feed Additive for Sows： Effects on Sow Feed Intake, Serum Metabolite Concentrations, IgG Level, Lysozyme Activity and Milk Quality

The objective of this study was to investigate the influence ofa phytogenic feed additive （PFA） to late-gestation （d 90） and lactation sows on their reproduction performance. Sixty Large White × Landrace primiparous sows were divided into four groups （fifteen sows per group）. The control group was fed with basal diet, the others were fed with basal diet supplemented with 0.02%, 0.04% and 0.06% PFA, respectively. Compared with the control, the sows in 0.04% PFA group had higher feed intake during lactation and higher litter weaning weight （P 〈 0.05）. At farrowing, glucose level in 0.04% PFA sows was higher than the control and sows in 0.02% PFA had the highest IgG content among the treatments （P 〈 0.05）. On day 7 of lactation, serum urea nitrogen contents were lower in response to PFA supplementation compared to the control （P 〈 0.05）. At the same time, sows fed the 0.06% PFA diet increased the lysozyme activity （P 〈 0.05）. The levels of milk lactose and IgG were increased in 0.02% and 0.04% PFA groups （P 〈 0.05）. In conclusion, feeding PFA improved sows and litter performance, serum metabolite concentrations, lgG level and lysozyme activity at postpartum and milk quality.

Fabrication and Their Physical Properties of Robust Insulating Bismuth Ferrite Multiferroic Ceramics

As one high temperature multiferroics,bismuth ferrite is hot researching.However,low resistivity and high dielectric loss are two major problems associated with the fabrications of BiFeO_3 multiferroic ceramics and debates their electrical and magnetic properties.In this talk,a series

双极主观等级量表的级别选取

双极等级工具(Bipolar rating instruments)用来测量人们对产品的情感观点。这种方法的常用和典型代表就是分为5,7和9这三种等级级别的等级量表(RatingScales),其中的数字代表了等级级别的数目(例如,‘5’表示总共有5种等级级别)。然而到目前很少有文献关注等级量表的最佳的级别数目问题。这里对这一问题进行了初步研究,尤其是针对这样的三种等级量表(S5,S7,S9),通过实验来给出了答案;研究表明,由于其高可靠性S最为适合。