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Intravesical bacillus Calmette-Guerin(BCG)in treating non-muscle invasive bladder cancer—analysis of adverse effects and effectiveness of two strains of BCG(Danish 1331 and Moscow-I) 被引量:2
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作者 Yuvaraja B.Thyavihally Preetham Dev +6 位作者 Santosh Waigankar Abhinav Pednekar Nevitha Athikari Abhijit Raut Archan Khandekar Naresh Badlani Ashishkumar Asari 《Asian Journal of Urology》 CSCD 2022年第2期157-164,共8页
Objective:To compare the differences in adverse effects and efficacy profile between bacillus Calmette-Guerin(BCG)Danish 1331 and BCG Moscow-I strain in management of non-muscle invasive bladder cancer.Methods:Clinica... Objective:To compare the differences in adverse effects and efficacy profile between bacillus Calmette-Guerin(BCG)Danish 1331 and BCG Moscow-I strain in management of non-muscle invasive bladder cancer.Methods:Clinical data of 188 cases of non-muscle invasive bladder cancer treated with BCG between January 2008 and December 2018 in our institute were collected prospectively and analysed retrospectively,and 114 patients who completed a minimum of 12 months of follow-up were analysed.Patient and tumor characteristics,strain of BCG,adverse effects,and tumor progression were included for analysis.Intravesical BCG was instilled in intermediate-and high-risk patients.Six weeks of induction BCG,followed by three weekly maintenance BCG at 3,6,12,18,and 24 months was advised in high-risk patients.Results:Overall 68 patients received BCG Danish 1331 strain and 46 patients received Moscow-I strain.Patient and tumor characteristics were well balanced between the two groups.The median follow-up period was 42.5 months and 34.5 months in Danish 1331 and Moscow-I groups,respectively.Adverse events like dropout rate,antitubercular treatment requirement,and need of cystectomy were higher in Moscow-I group(n=31,67.4%)when compared to Danish 1331 strain(n=33,48.5%)(p=0.046).On direct comparison between Danish 1331 and Moscow-I strain,there was similar 3-year recurrence-free survival(80.0%vs.72.9%)and 3-year progression-free survival(96.5%vs.97.8%).Conclusion:Study results suggest no significant differences between Danish 1331 and Moscow-I strain in recurrence-free survival and progression-free survival,but a significantly higher incidence of moderate to severe adverse events in BCG Moscow-I strain. 展开更多
关键词 Adjuvant bacillus Calmette-Guerin Bacillus Calmette-Guerin adverse effects danish 1331 strain Intravesical therapy Moscow-I strain Non-muscle invasive bladder cancer
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The Development of Danish Agriculture and Agribusiness: Lessons to Be Learned in a Global Perspective 被引量:1
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作者 H. O. Hansen M. Lund 《Journal of Agricultural Science and Technology(B)》 2011年第4期463-472,共10页
The agri and food industry is a major industrial sector in Denmark. Compared to other countries on a similar level of economic development Denmark has an extremely important agriculture and agribusiness sector. Danish... The agri and food industry is a major industrial sector in Denmark. Compared to other countries on a similar level of economic development Denmark has an extremely important agriculture and agribusiness sector. Danish agri and food cooperatives seem to have been successful in obtaining international competitiveness. The transformation and the structural development of the cooperative sector have more or less been completed. The development of the industrial structure among Danish agricultural cooperatives has been very rapid during the latest decades. Through mergers and acquisitions the number of firms has fallen dramatically, and the result has been increasing concentration ratios in almost all groups of the food industry. Structural development, concentration and globalization in recent decades have resulted in agri and food companies now being among the largest in Europe. To a large extent, agriculture all over the world faces similar problems and challenges. For this reason, it is essential that know-how, experiences and lessons can be transferred and adopted by agriculture in other countries around the world. In many ways, the experience and the success behind Danish agriculture and agribusiness can be transferred to other countries. However, profound studies of specific needs and conditions are necessary. 展开更多
关键词 Agribusiness agricultural cooperative danish agriculture LESSONS key success factors competitiveness.
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Long-lived Friendship with China: An Interview with the Danish Ambassador to China
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《China & The World Cultural Exchange》 2001年第4期11-13,共3页
关键词 Long-lived Friendship with China An Interview with the danish Ambassador to China
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CIIS Receives Delegation from the Danish Parliament
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《China International Studies》 2017年第6期F0002-F0002,共1页
On November 3,CIIS President Su Ge and Vice President Dong Manyuan met with the delegation from the Danish Parliament headed by Soren Espersen,Chairman of its Foreign Policy Committee.The two sides exchanged views on ... On November 3,CIIS President Su Ge and Vice President Dong Manyuan met with the delegation from the Danish Parliament headed by Soren Espersen,Chairman of its Foreign Policy Committee.The two sides exchanged views on China-Europe relations and the DPRK nuclear issue,among other topics.Members of the delegation included 展开更多
关键词 CIIS Receives Delegation from the danish Parliament
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An Interview with Mr. Morten Kjaerum,the Executive Director of Danish Institute for Human Rights
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作者 OUR STAFF REPORTER WANG YANBING 《The Journal of Human Rights》 2005年第5期7-9,共3页
EDITOR'S NOTE: In recent years, Chinese human rights institutes and experts are increasingly having academic exchanges and co-operation with those of other countries, among of which Danish Institute for Human Righ... EDITOR'S NOTE: In recent years, Chinese human rights institutes and experts are increasingly having academic exchanges and co-operation with those of other countries, among of which Danish Institute for Human Rights (DIHR) and its staff are an outstanding example. In early June,Mr. Morten Kjserum, the Executive Director of DIHR, Co-director ofthe Danish Centre for International Studies and Human Rights, Memberof the UN Committee on the Elimination of Racial Discrimination (CERD),President of the International Coordination Committee for NationalHuman Rights Institutions (ICC) came to Beijing to participate in aseminar, during which he was interviewed by our staff reporter Wang Yanbing. Following is his viewpoints of human rights issues. 展开更多
关键词 Morten Kjaerum the Executive Director of danish Institute for Human Rights An Interview with Mr
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Linking monitoring and modelling for river basin management:Danish experience with combating nutrient loadings to the aquatic environment from point and non-point sources 被引量:1
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作者 KRONVANG Brian WINDOLF JФrgen +4 位作者 GRANT Ruth ANDERSEN Hans E THODSEN Hans OVESEN Niels B LARSEN SФren E 《Science China(Technological Sciences)》 SCIE EI CAS 2009年第11期3335-3347,共13页
Nationwide monitoring of the aquatic environment was initiated in 1988 in Denmark as a means to follow the outcome of the Action Plans for nutrient pollution of the aquatic environment. Five Action Plans have been ado... Nationwide monitoring of the aquatic environment was initiated in 1988 in Denmark as a means to follow the outcome of the Action Plans for nutrient pollution of the aquatic environment. Five Action Plans have been adopted by the Danish Parliament since 1985 and the nationwide monitoring programme can be used to quantify the outcome as shown by reductions in nutrient discharges from both point and non-point sources. Moreover, the empirical experience gathered from nearly 20 years of monitoring is assisting the development and calibration of models for simulation of nitrogen leaching, nitrogen removal in groundwater and surface waters and the establishment of a P-index all covering the entire land area of Denmark. 展开更多
关键词 nitrogen phosphorus MONITORING data POINT SOURCES non-point SOURCES models Action Plans danish EXPERIENCE
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A review of Danish integrated multi-energy system flexibility options for high wind power penetration 被引量:2
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作者 Jiawei Wang Yi Zong +1 位作者 Shi You Chresten Træholt 《Clean Energy》 EI 2017年第1期23-35,共13页
The current status of wind power and the energy infrastructure in Denmark is reviewed in this paper.The reasons for why Denmark is a world leader in wind power are outlined.The Danish government is aiming to achieve 1... The current status of wind power and the energy infrastructure in Denmark is reviewed in this paper.The reasons for why Denmark is a world leader in wind power are outlined.The Danish government is aiming to achieve 100%renewable energy generation by 2050.A major challenge is balancing load and generation.In addition,the current and future solutions of enhancing wind power penetration through optimal use of cross-energy sector flexibility,so-called indirect electric energy storage options,are investigated.A conclusion is drawn with a summary of experiences and lessons learned in Denmark related to wind power development. 展开更多
关键词 energy system flexibility high wind power penetration integrated multi-energy system danish wind energy
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Visiting Danish Prime Minister Addresses at Tsinghua
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《Tsinghua Science and Technology》 SCIE EI CAS 2004年第3期316-316,共1页
关键词 Visiting danish Prime Minister Addresses at Tsinghua
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Auditing and design evaluation of building automation and control systems based on eu.bac system audit-Danish case study
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作者 Jacob Alstrup Engvang Muhyiddine Jradi 《Energy and Built Environment》 2021年第1期34-44,共11页
Improving the energy performance of buildings will prove vital for countries worldwide to reduce their energy consumption and emissions.A key player in reaching this goal is building automation and control,as having w... Improving the energy performance of buildings will prove vital for countries worldwide to reduce their energy consumption and emissions.A key player in reaching this goal is building automation and control,as having well-designed and operated building automation and control systems(BACS)provide large capabilities in optimizing the energy performance of different systems.In this regard,building owners and planners must be able to assess and evaluate the current status of their BACS and identify potential improvements.While there has been a large block of work done in Denmark along with regulations aiming to audit the overall building performance and individual systems characteristics,very little has been done in the field of auditing the building automation and control system and evaluating its structure and operation patterns.This lack of systematic BACS auditing and evaluation in Danish buildings is addressed in this work with the first implementation and evaluation of the eu.bac System methodology in a university office building.The building was found to comply with the lowest automation and control class E.Two BACS retrofit packages were proposed and evaluated,and energy savings up to 28.5%are reported.The preliminary assessment results reported demonstrate the potential of building automation and control retrofit measures in a combined holistic improvement package alongside building envelope upgrade.In addition,the impact of the eu.bac System improvements and labeling on the building’s classification based on the recent Danish building regulation BR18 is evaluated.The study discusses the feasibility of eu.bac System tool implementation in Danish buildings and suggests improvements.It also correlates and compares the eu.bac System audit to the upcoming European SRI instrument.In light of the huge efforts to digitalize the Danish energy sector,ensuring proper design and operation of BACS is of great importance.Thus,a systematic and methodical BACS auditing and evaluation methodology will be a crucial part of buildings’initial and retro-commissioning platforms. 展开更多
关键词 Building automation and control system BACS System auditing Eu.bac system EN 15 232 danish case study
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饲粮中添加复方中草药对丹系母猪繁殖性能、泌乳性能及哺乳仔猪生长性能的影响
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作者 王永珍 刘小莉 +3 位作者 王国琪 胡凯军 刘玉 张元林 《饲料研究》 北大核心 2024年第23期26-30,共5页
试验旨在研究饲粮中添加复方中草药对丹系母猪繁殖性能、泌乳性能及哺乳仔猪生长性能的影响。试验选取60头体况良好的3胎次待产前30 d的丹系母猪,随机分为2组,每组3个重复,每个重复10头母猪。对照组饲喂基础饲粮,复方中草药组饲粮中添加... 试验旨在研究饲粮中添加复方中草药对丹系母猪繁殖性能、泌乳性能及哺乳仔猪生长性能的影响。试验选取60头体况良好的3胎次待产前30 d的丹系母猪,随机分为2组,每组3个重复,每个重复10头母猪。对照组饲喂基础饲粮,复方中草药组饲粮中添加2.5%的复方中草药,预试期7d,正式试验期51 d。结果显示,与对照组相比,复方中草药组母猪羊水量、泌乳量和乳蛋白率极显著提高(P<0.01),健仔数、初生窝重和乳糖率显著提高(P<0.05),平均头产程和尿素氮含量极显著降低(P<0.01),弱仔数、死胎数和木乃伊胎数显著降低(P<0.05)。与对照组相比,复方中草药组母猪血清总超氧化物歧化酶(T-SOD)活性和总抗氧化能力(T-AOC)极显著提高(P<0.01),丙二醛(MDA)含量极显著降低(P<0.01),谷胱甘肽过氧化物酶(GSH-Px)活性显著提高(P<0.05);免疫球蛋白G(IgG)、白细胞介素-4(IL-4)水平极显著提高(P<0.01),免疫球蛋白M(IgM)水平显著提高(P<0.05),白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)水平显著降低(P<0.05)。与对照组相比,复方中草药组哺乳仔猪的断奶头数、断奶窝重和断奶个体重均显著增加(P<0.05),腹泻率极显著降低(P<0.01);IgG水平极显著提高(P<0.01),IL-1β水平极显著降低(P<0.01),IgM、和IL-4水平显著增加(P<0.05)。研究表明,基础饲粮中添加2.5%由杜仲、巴戟天、淫羊藿、黄芪、川芎、甘草、王不留行、益母草配伍的复方中草药,可以提高母猪繁殖性能和泌乳量,改善初乳品质,提高了哺乳母猪的免疫力及仔猪的生长性能,降低了仔猪腹泻率。 展开更多
关键词 复方中草药 丹系母猪 繁殖性能 泌乳性能 抗氧化功能 仔猪 生长性能
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耦合降雨过程-排水系统的机场跑道积水演化
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作者 宋洋 杨文静 张鹏 《科学技术与工程》 北大核心 2024年第28期12308-12315,共8页
机场跑道排水是保障飞机运行安全和飞机品质的关键因素之一,良好的排水系统能够有效排除雨水,减少积水和滞留水的影响。为了探讨现有机场跑道排水系统排水能力,以及降雨与排水系统的演化过程,以中国南方某机场跑道为研究对象,将丹麦水... 机场跑道排水是保障飞机运行安全和飞机品质的关键因素之一,良好的排水系统能够有效排除雨水,减少积水和滞留水的影响。为了探讨现有机场跑道排水系统排水能力,以及降雨与排水系统的演化过程,以中国南方某机场跑道为研究对象,将丹麦水利研究所开发的集成的水文水质量模型(Danish Hydraulic Institute model integrated computing,DHI MIKE)模型应用于机场跑道,构建耦合雨洪模型。根据研究区域的降雨特性以及现有排水系统,设计4种不同重现期的降雨情景,从管道充满度、地表淹没结果、跑道积水演化过程3个方面进行模拟分析。结果表明:管道满管数量与降雨强度呈正比关系,不同重现期下研究区域水深的空间分布大体呈一致状态,集中在集水浅沟周围。重现期越大,积水深度越高;出现积水时间和跑道关闭时间提前。跑道排水能力基本能够满足5年一遇的降雨标准。 展开更多
关键词 机场跑道 丹麦水利研究所开发的集成的水文水质量模型(DHI MIKE) 降雨重现期 管道充满度 排水能力
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丹麦木质扶手椅家具的形态特征
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作者 裴一帆 宋魁彦 《家具》 2024年第1期46-50,共5页
丹麦家具在现代家具的发展中具有重要地位,独特的造型与实用性对现代家具影响深远。为探究丹麦木质扶手椅家具的形态特征,将扶手椅按照部件分为靠背、扶手、座面和腿足4个部分,采用图例分析法和归纳法,分析4个部件的形态特征,归纳总结... 丹麦家具在现代家具的发展中具有重要地位,独特的造型与实用性对现代家具影响深远。为探究丹麦木质扶手椅家具的形态特征,将扶手椅按照部件分为靠背、扶手、座面和腿足4个部分,采用图例分析法和归纳法,分析4个部件的形态特征,归纳总结出丹麦扶手椅家具整体形态的变化多为线条的粗细弯曲,靠背部件种类丰富,扶手和腿足部件有圆材和方材,座面形态变化不大,主要体现材质变化的特点。进一步完善了丹麦家具的研究体系,丰富了丹麦家具形态研究的相关理论。丹麦家具的形态特征对现代家具有巨大的影响,值得深入探究并为现代家具的发展提供参考。 展开更多
关键词 丹麦木质扶手椅 图例分析法 形态特征
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空冷系统设计中典型年选取方法比较 被引量:4
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作者 胡琳 李占斌 +2 位作者 何晓嫒 朱冰冰 曹红利 《中国电力》 CSCD 北大核心 2010年第7期62-66,共5页
针对空冷系统设计中典型气象年(TMY)的选择问题,以韩城电厂二期项目为例,采用Sandia国家实验室法和Danish方法,选择最高气温、最低气温、平均气温、平均风速以及最大风速5个因子计算出12个典型气象月(TMM),组成"虚拟"气象年(T... 针对空冷系统设计中典型气象年(TMY)的选择问题,以韩城电厂二期项目为例,采用Sandia国家实验室法和Danish方法,选择最高气温、最低气温、平均气温、平均风速以及最大风速5个因子计算出12个典型气象月(TMM),组成"虚拟"气象年(TMY),并与传统的典型代表年(TRY)进行设计气温、满发气温以及空冷平台布局等几方面的对比分析。结果表明:Sandia国家实验室法和Danish方法选择的TMYS和TMYD较常规的典型代表年法更能反映建设项目所在地气温变化的长期规律,为设计提供更为合理的气象参数;Sandia国家实验室法和Danish方法所选的设计气温和满发气温更符合我国电力发展的需要,有利于机组经济运行;Sandia国家实验室法相对于Danish方法数据量更小,算法更为简单,Sandia国家实验室法可以更广泛地用作空冷系统设计中典型气象年的选取。 展开更多
关键词 空冷系统设计 SandiaNational实验室法 danish方法 典型气象年 典型代表年 典型气象月
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典型气象年方法在不同气候环境空冷设计中的比较研究 被引量:3
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作者 胡琳 李占斌 +2 位作者 何晓嫒 朱冰冰 曹红利 《应用基础与工程科学学报》 EI CSCD 2010年第4期539-547,共9页
典型气象年是电厂空冷系统设计中的一个重要因子,本文针对典型气象年的选择,将Sandia National实验室法、Danish方法典型年计算方法应用于陕西3个不同气候带燃煤空冷电厂系统设计中,并与传统的典型代表年(TRY)结果进行了设计气温、设计... 典型气象年是电厂空冷系统设计中的一个重要因子,本文针对典型气象年的选择,将Sandia National实验室法、Danish方法典型年计算方法应用于陕西3个不同气候带燃煤空冷电厂系统设计中,并与传统的典型代表年(TRY)结果进行了设计气温、设计背压、满发气温以及运行经济性等几方面的对比分析.结果表明:Sandia National实验室法和Danish方法选择的典型气象年较常规的典型代表年法更能反映建设项目所在地的气温变化的长期规律,符合我国电力发展的需要,有利于机组经济运行,可为设计提供更为合理的气象参数,并且纬度越大,计算结果越优于常规的典型代表年法;Sandia National实验室法相对于Danish方法数据量更小,算法更为简单,Sandia National实验室法可以更广泛地用作空冷系统设计中典型气象年的选取. 展开更多
关键词 典型气象年 Sandia National实验室法 danish方法 设计气温 满发气温
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基于信噪比加权的丹麦法抗差导航模型研究 被引量:3
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作者 唐艳梅 王坚 +2 位作者 刘超 彭祥国 张学文 《全球定位系统》 2010年第6期12-16,共5页
在接收机自主完备性算法(RAIM)中粗差探测和剔除最为关键。针对原有算法的不足,提出将基于信噪比加权丹麦法用于接收机自主完备性监测中。利用迭代最小二乘估计对故障卫星进行降权处理,以达到隔离的效果。对算法进行数学建模,描述了算... 在接收机自主完备性算法(RAIM)中粗差探测和剔除最为关键。针对原有算法的不足,提出将基于信噪比加权丹麦法用于接收机自主完备性监测中。利用迭代最小二乘估计对故障卫星进行降权处理,以达到隔离的效果。对算法进行数学建模,描述了算法的流程;利用实测数据进行验证表明:该方法计算速度快且精度也有所提高,具有一定的参考价值。 展开更多
关键词 GNSS 信噪比 最小二乘 danish 抗差估计
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丹麦家具设计师基因图谱可视化分析
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作者 徐雪 周橙旻 《家具》 2024年第3期37-41,共5页
20世纪以来丹麦家具设计师不断将丹麦设计推向国际,研究设计师基因图谱不仅可以获得家具设计谱系宏观认知,也可以更深入理解丹麦设计文化。运用信息可视化方法易于识别认知的特点来分析丹麦设计师群体特征和设计演变规律,为相关领域研... 20世纪以来丹麦家具设计师不断将丹麦设计推向国际,研究设计师基因图谱不仅可以获得家具设计谱系宏观认知,也可以更深入理解丹麦设计文化。运用信息可视化方法易于识别认知的特点来分析丹麦设计师群体特征和设计演变规律,为相关领域研究提供方法论参考。通过丹麦家具设计师信息关键信息提取及数据分析,并结合丹麦的发展历史、国民个性、艺术运动等内容,从基因图谱角度进行研究与可视化设计,以叙事、风格、材料、结构4个角度进行可视化图谱分析,探索构建丹麦设计基因可视化特征和规律,初步形成丹麦家具设计师基因图谱分析和研究范式。叙事图谱突出设计师的跨专业跨学科合作特点,风格、材料、结构图谱表示设计风格特征与偏好,与时代背景的影响密不可分。 展开更多
关键词 丹麦家具设计师 基因图谱 可视化 现代设计
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应用丹麦HEVA深松机对东北黑土地保护的启示
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作者 张国礼 《农机使用与维修》 2024年第3期65-67,共3页
为解决东北黑土地保护实施过程中存在耕作成本大、粮食产量下降的问题。该文介绍了丹麦HEVA深松机在国内市场的实际应用情况,并对丹麦HEVA深松机降低动力消耗的基本原理进行说明。该机械具有良好的深松效果,粮食产量明显提高,以期为农... 为解决东北黑土地保护实施过程中存在耕作成本大、粮食产量下降的问题。该文介绍了丹麦HEVA深松机在国内市场的实际应用情况,并对丹麦HEVA深松机降低动力消耗的基本原理进行说明。该机械具有良好的深松效果,粮食产量明显提高,以期为农机研发工作者在深松机产品开发中提供参考思路。 展开更多
关键词 东北黑土地保护 丹麦HEVA深松机 动力消耗
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基于情感交互理念下的汉斯·瓦格纳家具设计研究
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作者 黄晓凡 黄宇轩 《鞋类工艺与设计》 2024年第5期166-168,共3页
本文从情感交互视角探讨有机现代主义家具设计大师汉斯·瓦格纳的设计理念。将情感交互理念融入瓦格纳家具设计,结合实例分析其设计理念在情感交互认知过程与审美情趣中的体现。瓦格纳家具设计注重情感与人性化,强调人与产品交互中... 本文从情感交互视角探讨有机现代主义家具设计大师汉斯·瓦格纳的设计理念。将情感交互理念融入瓦格纳家具设计,结合实例分析其设计理念在情感交互认知过程与审美情趣中的体现。瓦格纳家具设计注重情感与人性化,强调人与产品交互中产生的舒适、趣味等心理感受。情感交互是瓦格纳设计思想的核心,本文总结其设计美学,以期为中国家具设计在单一发展现状中提供借鉴与参考。 展开更多
关键词 汉斯·瓦格纳 情感交互 家具设计 丹麦设计 设计思想
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直接蒸发冷却空调的典型气象季选取方法比较 被引量:1
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作者 何家键 亢燕铭 +1 位作者 杨霰 钟珂 《东华大学学报(自然科学版)》 CAS 北大核心 2019年第6期918-923,共6页
直接蒸发冷却(direct evaporative cooling,DEC)空调系统的供冷能力对天气变化十分敏感,因此工程设计中需要相应的气象年数据来保证系统运行的可靠性。为寻找适用于构建DEC典型气象年的方法,在统计分析乌鲁木齐近30年夏季气象数据的基础... 直接蒸发冷却(direct evaporative cooling,DEC)空调系统的供冷能力对天气变化十分敏感,因此工程设计中需要相应的气象年数据来保证系统运行的可靠性。为寻找适用于构建DEC典型气象年的方法,在统计分析乌鲁木齐近30年夏季气象数据的基础上,分别采用Sandia法、Danish法、CSWD(Chinese standard weather data)法构建了DEC的气象年。对比了不同方法构建DEC气象年的准确性。根据DEC空调系统能效比(energy efficiency ratio,EER)的长期平均值和频率分布的预测偏差,得出Danish法是最适合构建DEC典型气象季的方法。 展开更多
关键词 典型气象季 直接蒸发冷却空调 能效比 danish
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日粮不同硒水平对公猪繁殖及精浆营养生化参数的影响 被引量:13
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作者 梁明振 卢克焕 +8 位作者 黎宗强 卢晟盛 石德顺 牛向丽 梁贤威 梁坤 文崇利 林宝东 梁戈 《广西农业生物科学》 CAS CSCD 2003年第3期165-170,共6页
选择年龄、体重、精液质量较一致、正在使用的健康壮年长白公猪5头,采用5×5正交拉丁方试验设计,在不同阶段分别饲喂含硒量为0.05mg·kg-1(处理1)、0.15mg·kg-1(处理2)、0.25mg·kg-1(处理3)、0.35mg·kg-1(处理4)... 选择年龄、体重、精液质量较一致、正在使用的健康壮年长白公猪5头,采用5×5正交拉丁方试验设计,在不同阶段分别饲喂含硒量为0.05mg·kg-1(处理1)、0.15mg·kg-1(处理2)、0.25mg·kg-1(处理3)、0.35mg·kg-1(处理4)、0.45mg·kg-1(处理5)日粮,研究硒对公猪繁殖参数、精浆生殖激素、精浆营养生化参数的影响。结果表明:(1)处理1公猪精子畸形率显著高于处理4公猪精子的畸形率(P<0.05);(2)处理4公猪精浆促卵泡生成素(FSH)、睾酮(T)的浓度显著高于处理1公猪精浆FSH、T的浓度(P<0.05);(3)处理4公猪精浆的谷胱甘肽过氧化物酶(GSHPx)活性显著高于处理1公猪精浆的GSHPx活性(P<0.05);(4)采精量、精子密度、精子活率、精液pH值、精浆促黄体生成素(LH)浓度、精浆尿素含量、精浆总蛋白含量,在不同处理条件下均没有显著的差异(P>0.05);(5)精子活率、精子畸形率、精浆FSH浓度、精浆LH浓度、精浆T浓度、精浆尿素的含量、精浆的GSHPx活性与日粮硒含量之间均存在着一定的规律性:即在一定范围内(0.35mg·kg-1),它们的变化随日粮硒含量的增加而增加或降低,超出该范围则降低或升高;(6)综合上述结果,长白公猪日粮硒含量以0.35mg·kg-1较为适当。 展开更多
关键词 日粮 公猪 繁殖 精浆营养生化参数 生殖激素
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