Changes in the blood lactate dehydrogenase measurements in canines and felines following the international standardization of the assay method

Lactate dehydrogenase (LDH) in blood is measured using the Japanese Society of Clinical Chemistry (JSCC) method in Japan and the International Federation of Clinical Chemistry (IFCC) method in other countries. In human clinical practice, the IFCC method replaced the JSCC method due to international standardization. Moreover, veterinary LDH measurement will also eventually shift to the IFCC method. However, the relationship between the IFCC and JSCC methods for LDH in various animals and whether they can be equated or not have not yet been investigated. This study aimed to present the changes in measurements in canines and felines after switching to the IFCC method. The plasma LDH activity of canines (N=177) and felines (N=115), who visited a secondary care veterinary clinic, was measured using the JSCC and IFCC methods. The IFCC/JSCC ratio was <1.0 in 85% of canines and 88% of felines, indicating that the IFCC method tended to show lower values than the JSCC method, presumably because LDH5 is dominant among the LDH isozymes in canines and felines. The increase in the systematic errors of both assays was in the high value range, with some samples exceeding the error tolerance from near the upper end of the reference range. When switching to the IFCC method for LDH measurement in canines and felines, each institution should consider whether the reference range and clinical diagnostic values established by the JSCC method are appropriate for continued use.     

东塘水蜜桃高产优质栽培技术

通过对东塘水蜜桃生物学性状进行观察,总结其高产优质栽培技术:规划建园,科学种植;合理整枝修剪,培养良好树冠;科学施肥,提高品质;科学防治病虫害。     

W-OH新材料特性及在青海湖周边地区沙化地植生固沙中的应用

W-OH是一种新型的化学植生固沙材料,通过室内试验及青海湖周边地区的不同处理方式植生固沙试验表明,3%～5%浓度的W-OH材料在抗冻、抗压、抗拉、抗紫外线等性能均能达到青海湖周边地区植生固沙的要求,在处理方式喷涂W-OH+沟处理试验中取得了良好的植被恢复和治沙效果,适合在青海湖周边地区类似条件的地区进行推广应用。     

德系安哥拉兔的生长特性

德系安哥拉兔不仅以产毛量高、毛质好而著称,而且有生长迅速、体成熟早、体型大的特点。六月龄时已达成年体重的87.37％。母兔的初配可在此时进行,公兔可延迟一个月配种。四月龄与六月龄体重和成年体重的相关系数分别为0.505与0.508,这为德系安哥拉兔体重的早期选择提供了有利时机。     

内蒙古典型草原草畜系统适宜放牧率的研究Ⅰ.以绵羊增重及经济效益为管理目标

(1)绵羊个体增重与放牧率呈线性负相关,个体最大增重临界放牧率,因季节不同而变化,随着个体增重与放牧率回归系数b绝对值的增大而降低,以始、终放牧期间所得临界放牧率最小,(2.04羊/hm²)。(2)公顷增重与放牧率的关系符合二次曲线,在达到公顷最大增重以前,随着放牧率的增大而增大,之后则随着放牧率的增大而下降,平均543羊/hm²。(3)公顷最大增重并不一定获取公顷最大利润,主要视买卖价格及其差值而定。(4)以冷蒿小禾草为主的退化草原,宜以个体最大增重的适宜放牧率作为管理标准,以使该类草原在利用中得以恢复。     

宁夏引黄灌区造林树种地膜覆盖育苗技术探讨

为了缩短育苗周期,提高育苗成活率,培育合格的良种壮苗,连续4年在宁夏引黄灌区育苗基础最雄厚的平罗县对几个造林主栽树种臭椿、白腊、国槐和新疆杨进行覆膜育苗试验,取得明显成效。试验结果证明,覆膜育苗与露地育苗相比,具有成苗率高、苗木生长健壮整齐、抽干程度轻、周期可缩短一年、经济效益十分明显等特点,具有很大的推广价值。     

Evaluation of the germ plasm collection of safflower,Carthamus tinctorius L. VII. Variability of capitulum width and outer involucral bracts' dimensions

Summary A germ plasm collection of safflower, Carthamus tinctorius L., with about 900 lines from over twenty countries was evaluated in Utah, USA for head width and outer involucral bracts (OIB) dimensions, traits affected by both human and natural selection. The regional germ plasm pools contained considerable variability for these traits. Plants bearing short or long as well as narrow or wide OIB were well adapted. Geographical clines were detected for the means of OIB dimensions, indicating possible gene flow. The correlations of the OIB dimensions with yield, yield components, oil content and growing period were not instructive and at times very inconsistent. Primary head diameter varied considerably within the regional gene pools. Its correlations with yield/plant, number of heads/plant, seed weight and oil content were inconsistent. Capitulum width was positively and significantly correlated with the number of seeds per head. Head diameter, however, can vary considerably without affecting seed yield per unit area.     

叶绿素荧光动力学O-J-I-P参数在棉花幼苗耐冷性评价上的应用

低温冷害是影响棉花生长的主要逆境因子,如何建立简捷、有效的棉花耐冷性鉴定及筛选体系是棉花耐冷研究的关键问题。在本研究中,阐述了如何用O-J-I-P参数来评价棉花幼苗的耐冷性。选用北疆棉区22个主栽棉花品种,对盆栽幼苗经过连续4d的4℃低温处理,进行了相应的冷害指数鉴定,并基于O-J-I-P参数Fv/Fm和PI所建立的冷害因子指数1及冷害因子指数2对各个棉花幼苗做了耐冷鉴定和分级评价。结果发现,冷害因子指数1和冷害因子指数2的鉴定、评价结果与冷害指数鉴定结果相近。中棉所36、新陆早25、297-5幼苗具有较强的耐冷性,而新陆早10号、新陆早12号及炮台1号的耐冷性较弱。叶绿素荧光动力学O-J-I-P可以快速、有效地鉴定棉花幼苗的耐冷性,这对棉花的耐冷性鉴定和培育耐冷型的棉花品种具有重要的意义。     

课程思政理念下“烘焙食品加工技术”课程的教学设计初探——以“泡芙制作”为例

在课程思政的理念下,通过介绍开展"烘焙食品加工技术"课程思政的目的和意义,以"泡芙制作"为例,从教学任务、教学目标、学情分析、教学重难点、教学方法、设计方案等6个方面进行教学设计。通过将课程内容和思政元素相结合,更好地在教学环节中实现立德树人的根本任务。     

冰冻雪压对杉木人工林近成熟林分危害调查

以受冰冻雪灾较为严莺的江西省大岗山林区杉木近成熟林分为研究对象,探讨杉木林分结构和立地条件与杉木受损类型及灾害发生程度的关系,得到几点主要结论:1)冰冻雪压造成大岗山林区杉木受害株数比例达66.84%,受灾相当严重,杉木林分受害类型可分为弯梢、断梢、斜干、断干、倒地及翻蔸等6种,其中断干和断梢为最主要的2种受害类型.2)杉木林分结构对冰冻雪压危害具有明显的调节作用,灾害主要发生于径阶相对较小的林木,林分内径阶越大的林木其受害程度明显越轻;林分密度与受害强度具极显著正相关,密度越高,林分受损株数愈多,且密度主要影响断干、翻蔸这2种不可逆的受损类型,合理的密度调控至关重要.3)杉木林分的立地条件与受害程度紧密相关,高海拔、高坡位、陡坡处的林分更易受到冰冻雪压的危害,较高的立地指数有利于杉木在遭受冰冻雪压灾害时减轻损失.