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AIM:To investigate the effects of the juice of fructus hippophae(JFH) on thrombocytopenia in rats.METHODS:Forty-eight wistar rats were divided into control group, model group, Yixuesheng-Jiaonang (YSJN) group and JFH group. Rats were injected intraperitoneally with cyclophosphamide (CTX, 30 mg/kg) or saline once a day for 3 days. And then, Saline, YSJN or JFH was administered (ig) once a day for 11 days. On the second, fouth, sixth and eighth day, the thrombocyte were counted, the mean platelet volume (MPV) and PDW were examined. On the eighth day, the cAMP, cGMP in platelets and platelet aggregation function were also examined.RESULTS:JFH could shorten the time of blood coagulation, increase the count of platelet, and enhance the platelet aggregation function. The experiment also showed that the JFH could decrease cGMP content in platelet.CONCLUSION:JFH could enhance blood coagulation and quality of platelet and prevent thrombocytopenia induced by cyclophosphamide in rats. 相似文献
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以虹鳟(Oncorhynchus mykiss)优良品系G2世代为基础群体,在避免全同胞或半同胞交配基础上随机交配,建立60个全同胞家系,对上述家系进行传染性造血器官坏死病毒(Infectious haematopoietic necrosis virus,IHNV)人工感染试验,构建贝叶斯动物阈模型估计IHN抗病力遗传参数,采用吉布斯抽样(Gibbs sampling)方法估计虹鳟IHN抗病力方差组分并计算遗传力,结果表明,虹鳟IHN抗病力遗传力为0.34。在此基础上进行抗病家系筛选研究,获得8个感染IHNV病毒90日存活率超过50%家系,其中一个家系(编号K23)存活率超过90%。本研究结果显示,虹鳟IHN抗病力具有中等遗传力,采用选择育种手段对虹鳟IHN抗病性能进行遗传改良在技术上是可行。 相似文献
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浑浊型饲用微生态菌剂悬浮剂的制备及稳定性研究 《畜牧与饲料科学》2021,42(6):13-17
[目的] 建立一种浑浊型微生态菌剂悬浮剂的制备方法,并对其稳定性进行评价。[方法] 以黄原胶和羧甲基纤维素钠为稳定剂,以饲用微生态菌剂干粉为悬浮成分,制备微生物水悬浮体系。对制备的悬浮剂进行稳定性评价,测定指标包括稳定系数、黏度、存放稳定性、冷贮存稳定性和活菌总数。[结果] 随着稳定剂添加比例的增加,悬浮剂的稳定系数逐渐增加。添加0.20%稳定剂,体系的稳定系数达到91.38%,极显著(P<0.01)高于空白对照组。悬浮体系的黏度随着稳定剂添加量的增加和贮存温度的降低而增大,当稳定剂添加比例为0.20%时,体系不出现分层现象,达到稳定状态。经过24 h冷贮存(4 ℃)后,添加0.10%稳定剂的悬浮剂活菌数出现下降,添加0.10%~0.25%稳定剂显著(P<0.05)低于空白对照组,但仍维持在109 CFU/mL以上。[结论] 稳定剂添加量为0.20%时,饲用微生态菌剂悬浮剂无分层现象出现,无论常温还是冷贮存24 h后,制成的悬浮剂中活菌数均保持在109 CFU/mL以上,能够保证饲用微生态菌剂的有效活菌数。 相似文献
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艳山姜切花花蕾脱落的控制 总被引:1,自引:0,他引:1
对艳山姜(Alpinia zerumbet)切花最佳采收时期和控制其花蕾脱落的保鲜液及预处理方法进行了研究.结果表明,艳山姜切花在花枝发育良好而花序总苞片未脱落时采收最佳;硫代硫酸银(STS)和Al2(SO4)3可有效控制艳山姜花蕾的脱落,是其较理想的瓶插保鲜剂;200 mg/L 8-HQC 5%SUC 5 mg/L 6-BA预处液同时结合10℃预冷处理4 h可有效降低艳山姜切花花蕾的脱落率. 相似文献
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探讨了在现代科学技术高速发展,特别是网络技术飞速发展的今天,对高校传统的课程教学模式带来的挑战。《市政学》作为专门研究市政管理一般理论的科学,具有很强的现实应用性,其课程教学面临更为严峻的挑战。还研究了在校园网、互联网的基础上,如何利用多媒体课件和网络,有效组织、引导、管理和开展《市政学》的开放式教学。 相似文献
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LU Xin-xing YANG Jin-li WANG Hai-rong WANG Gui-chao GAO Ai-wu ZHANG Li-min HOU Xian-zhi 《中国畜牧兽医》2015,42(12):3202-3209
To study the effect of nutrient restriction and compensation on weight,serum indexes and gene expression of chest fat adipokine in Mongolian lamb,thirty male lambs were randomly divided into control group (20.26 kg± 3.63 kg) and feed restricted group (21.29 kg±3.00 kg).The experiment lasted for 120 days,including 60 days for feed restriction and 60 days for compensatory feed.At the end of each stage,five lambs from each group were slaughtered and chest fat was collected.Serum concentration of triglycerides,non-esterified fatty acids (NEFA),total cholesterol were measured.Quantitative Real-time PCR were used to determine Adiponectin,Visfatin,PPAR-γ and ACC genes expression.The results showed that:①The lamb body weight of restricted group kept maintain level and that of control group showed a increase tendency.During the compensatory period,the average daily gain (ADG) of restricted group was significantly higher than control group (P< 0.05).②During the restriction period,serum triglycerides concentration of lambs in restricted group was significantly decreased at day 30 and 60 (P< 0.05),and NEFA concentration was significantly increased at day 30 (P< 0.05).After 60 days of nutritional compensation,all serum parameters we tested were not significantly different between restrict group and control group (P >0.05).③During the restriction period,PPAR-γ and ACC gene expression in restricted group were significantly lower than that of control group (P< 0.05),while no significant differences were found during the compensation period (P>0.05).Adiponectin and Visfatin genes expression in chest fat was not significantly changed throughout the experiment (P >0.05).We could know that nutritional restriction reduced fatty acid synthesis and adipocyte differentiation ability,adipose tissue was mobilized energy metabolism,and total cholesterol was recoveried growth on the compensation.However,the ACC and PPAR-γ genes in restricted group were significantly decreased with the body weight increased rapidly during the compensatory stage.Adiponectin and Visfatin were not significantly different between restricted and compensatory stages. 相似文献
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2005年在广西弄岗国家级自然保护区采获得4只纹胸鹛(Macronous gularis),这是广西鸟类的新记录。标本现保存于广西大学动物科技学院标本室。在弄岗保护区森林下层鸟类中,纹胸鹛已成为仅次于灰眶雀鹛的优势种之一。 相似文献