产前期

围产前期日粮不同NFC/RDP水平对奶牛营养物质表观消化率及血液生化指标的影响

Effects of Prepartum Diets Varying in NFC / RDP Levels on Apparent Nutrient Digestibility and Serum Biochemical Parameters in Dairy Cows

《国际循环》：您是否相信妊娠高血压本身起源于产前期？

International Circulation : On the subject of prenatal period and hypertension , do you believe it has its origins in the prenatal period ?

低血钙症和产后瘫痪是奶牛围产期的常发病，大量研究表明通过围产前期的营养调控可有效控制围产期的血钙水平，从而使奶牛血钙维持较高的水平。

Hypocalcemia and perinatal cows postpartum paralysis is common diseases , numerous studies show that by the early perinatal nutrition control can effectively control the blood calcium level in perinatal period , so that the cow serum calcium was maintained at a high level .

可提高产蛋鸡前期胫骨中灰分含量，增加磷的沉积量；

Increased tibia ash content of layers at early stage , increased phosphorus retention .

腰硬联合穿刺麻醉用于消除剖宫产术前期疼痛的效果观察

Effect of combined lumbar and peridural anesthesia on the earlier stage analgesia in cesarean section

结论：腰硬联合穿刺麻醉起效快，并能有效消除剖宫产术前期的疼痛，而且也未增加副反应的发生。

Conclusion : Combined lumbar and peridural anesthesia acted quickly , effectively stopped the earlier stage pain in cesarean section , and increased no additional opportunity of side effects .

玉米遥感测产的前期任务是利用多年期相似时相光谱遥感图像，经过一系列遥感影像处理这后，使用主成分分析法选取决定玉米产量的主要因素。

In the remote sensing measurement of corn task is to use old period similar phase spectrometry remote sensing images , after a series of remote sensing image processing after this , using principal component analysis selecting the main factors of decision maize yield .

裂变产额测量的前期工作&小型裂变室的研制

The Pre-work of Measurement Fission Yields-the Manufacture Minitype Fission Ionizing Chamber