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Effect of hormonal status and metabolic changes of restricted ewes during late pregnancy on their fetal growth and development

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Science China(Life Sciences) 2007年第6期50卷 766-772页

作者： GAO Feng1, HOU XianZhi1 & LIU YingChun2 1 College of Animal Science and Animal Medicine, Inner Mongolia Agricultural University, Huhhot 010018, China 2 College of Biotechnology and Bioengineering, Inner Mongolia Agricultural University, Huhhot 010018, China College of Animal Science and Animal Medicine Inner Mongolia Agricultural University Huhhot China College of Biotechnology and Bioengineering Inner Mongolia Agricultural University Huhhot China

This study investigated the effects of hormonal status; metabolic changes of restricted ewes during late pregnancy on the ovine fetus growth; development. One hundred Mongolian ewes, synchronized for oestrus; mated, were divided into three groups; offered 0.175 MJME·kgw[0.75]·d[1] (Restricted Group 1, RG1), 0.33 MJME·kgw[0.75]·d[1] (Restricted Group 2, RG2); ad libitum access to feed (Control Group, CG) during their late pregnancy respectively. The results suggested that with the supply of exogenous energy decreasing during late pregnancy, maternal body weight; net body weight loss in RG2; RG1 were lower than those of CG (Ps0.01). The insulin; IGF-1 concentrations of ewes in RG2; RG1 tended to be lower than those of CG (P>0.05), but the GH concentrations in RG2; RG1 were enhanced; there was significant difference between RG1; CG on d 120 of gestation (P0.05). However, the NEFA; FAA concentrations of ewes in RG1 were reduced from d 90 to d 120 of gestation, then enhanced from d 120 to d 140 of gestation. During the late pregnancy, with the supply of nutrition decreasing, the negatively physiological; biochemical maternal reactions to restriction became worse, which significantly reduced the average lamb birth weight; daily growth rate of fetus in RG2 (P<0.05); RG1 (P<0.01).

关键词： late pregnancy restricted ewes fetus growth development

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Dynamic analysis of Sand Source in west Inner Mongolia

Dynamic analysis of Sand Source in west Inner Mongolia

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第三届国际沙尘暴与降尘天气专题学术研讨会

作者： Zhang Tao (forestry college of Inner Mongolia agriculture university 010018 Hohhot China)

＜正＞ The sand source is one of the main factors that related to the sandstorm. The data of RS TM in 1990s and ETM in 2002 are analyzed by the software of PCI, ARCGIS, ARCINFO, which is based on synthesizing and comparing wave band. Typical windblown sand areas are analyzed in the west of Inner Mongolia, such as Wulanbuhe desert, Kubuqi desert, Maowusu sand, Tenggeli desert. West of Inner Mongolia ecologic system in sand source is destroyed seriously because of population increasing, developing of industry, agriculture and animal husbandry, mineral in recent 10 years. Climate condition is extremity rigor in this area. That cause sandstorm takes place frequently. The orientation of sand source is tend toward to the southeast.

关键词： West Inner Mongolia Sand Source Dynamic analysis

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Study on the Region scale Diversity of Rodent Community in Semi-Desert and Desert Areas of China

Study on the Region scale Diversity of Rodent Community in S...

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2009中国草原发展论坛

作者： A juan Wu Xiaodong~(**) Fu Heping (Inner Mongolia Agricultural University,Hohhot 010018,China)

＜正＞Introduction Animal community,which is a functional unit and organizational structure,is always one of the cores in ecological *** deserts of the world present natural laboratories for the study of community structure and the processes influencing that *** because of the common biotic condition and relative structural（vegetative）simplicity of deserts,these systems have played a promi-

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Studies on Rodent community in Region scale of Semidesert and Desert Region of Inner Mongolia

Studies on Rodent community in Region scale of Semidesert an...

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2009中国草原发展论坛

作者： A juan,Wu Xiaodong~(**),Fu Heping (Inner Mongolia Agricultural University,Hohhot 010018,China)

The structure and distribution of rodent communities,were comprehensively studied by mainly using trap-day methods in semi-desert and desert region of Inner Mongolia from 1988 to 1993 and from 1998 to 2004..The region belongs to arid and super-arid region of Inner Mongolia(37°24′～44°59′N,97°10′～114°10′E) including northwest part of Xilingguole league,center-west part of Wu-lanchabu league,center-north part of Bayenaoer league and the total area of Alashan *** contained various types of grassland:temperature desert - grassland,grassland-desert and typical desert. The total of 317 sampling plots were arranged in an area of 380,000 km,and total of 157,702 trap-days were completed,The results showed:

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Studies on Recognition Method of Marrow Cells Image Based on Morphology and Neural Networks

Studies on Recognition Method of Marrow Cells Image Based on...

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ICEMI'2005第七届国际电子测量与仪器学术会议

作者： Hou Zhenjie Ma Shuoshi Pei Xichun Pan Xin (Inner Mongolia Agriculture University Hohhot 010018 China)

Aimingatthe characteristics of the marrow cell image, morphologymethodsareappliedtoprocessimagefor detecting acc urate edges of different kinds of cells. Two-level neural network can be used for the i

关键词： Marrow cell segmentation morphology neural networks.

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Effects of Different Rotational Grazing Time on the Plant Population of Desert Steppe

Effects of Different Rotational Grazing Time on the Plant Po...

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The 3rd Korea-China-Japan Joint Symposium on Grassland Agriculture and Livestock Production

作者： Yang Jing and Liu Hongmei College of Ecology and Environment Science Inner Mongolia Agricultural University Hohhot 010018 China

＜正＞The effects of different rotational grazing time on the main plant population characteristics of desert steppe were investigated in this *** main results were shown as follows:the height of Stipa breviflora in late grazing plot was more superior than that in early plot,and the coverage and density of Alliumpoly rrhizum presented an obvious advantage.

关键词： Rotational grazing time Biomass Desert Steppe

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The Study Advances of Portable Wind Erosion Tunnel and Discussion about Its Several Design Conditions

The Study Advances of Portable Wind Erosion Tunnel and Discu...

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国际农业工程大会

作者： Guisheng Fan ProfessorInner Mongolia Agricultural University Zhao-Wu-Da Road No.306 HUHHOT 010018 Weiguo Dou ProfessorInner Mongolia Agricultural University Zhao-Wu-Da Road No.306 HUHHOT 010018. Hantao LiuInner Mongolia Agricultural University Zhao-Wu-Da Road No.306 HUHHOT 010018. Wenming WangInner Mongolia Agricultural University Zhao-Wu-Da Road No.306 HUHHOT 010018.

＜正＞ The paper reviewed and summarized the study advances and status of portable wind erosion tunnels, and viewed the future development tendency and application prospect. Subsequently, through the analysis and discussion about the requirements for wind erosion measurements and the requirements for simulating the near surface atmospheric boundary layer, the paper described the basic performance and functions that should be possessed for the portable wind erosion tunnels. Based on the analysis and discussion the paper finally put forward several basic aerodynamic requirements and design conditions that should be met in the design of portable wind erosion tunnels.

关键词： Wind Erosion Wind Tunnel Design

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Study of Domestic Animals Lice in Inner Mongolia Autonomous Region,China

Study of Domestic Animals Lice in Inner Mongolia Autonomous ...

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中国动物学会第七届全国青年寄生虫学工作者学术讨论会

作者： Xiaoye Yang Lianru Yang & Zhenlian Liu(College of Animal Science and Animal Medicine Inner Mongolia Agricultural University Huhhot 010018 China)

＜正＞ This paper reported 17 lice species of domestic animals in Inner Mongolia Region, China. Eight species were sucking lice （Anoplura） of families Haematopinidae and Linognathidae. Three species of genus Haematopinus, in family Haematopinidae, were H. suis from pigs, H. eurysternus from cattle, and H asini from horses. Family Linognathidae is

关键词： Domestic animal Lice Species Inner Mongolia China

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Integrating MODFLOW and GIS technologies for assessing impacts of irrigation management and groundwater use in the Hetao Irrigation District,Yellow River basin

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Science China(Technological Sciences) 2009年第11期52卷 3257-3263页

作者： XU Xu1,2, HUANG GuanHua1,2 & QU ZhongYi3 1 Center for Agriculture Water Research, China Agricultural University, Beijing 100083, China 2 Chinese-Israeli International Center for Research and Training in Agriculture, China Agricultural University, Beijing 100083, China 3 Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot 010018, China Center for Agriculture Water Research China Agricultural University Beijing China Chinese-Israeli International Center for Research and Training in Agriculture China Agricultural University Beijing China Water Conservancy and Civil Engineering College Inner Mongolia Agricultural University Hohhot China

Due to severe water scarcity, water resources used in agricultural sector have been reduced markedly in Hetao irrigation district. Application of water-saving practices (WSPs) is required for the sustainable agricultural development. The human activities including WSPs and increase of groundwater abstraction can lower down the groundwater table, which is helpful to the salinity control. Meanwhile, an excessively large groundwater table depth may result in negative impact on crop growth and fragile ecological environment. In this paper, the Jiefangzha irrigation system in Hetao irrigation district was selected as a typical area, a groundwater flow model based on ArcInfo Geographic Information System (GIS) was developed and implemented to quantify the effect of human activities on the groundwater system in this area. The preand post-processing of model data was performed efficiently by using the available GIS tools. The time-variant data in boundary conditions was further edited in Microsoft Excel with programs of Visual Basic for Application (VBA). The model was calibrated and validated with independent data sets. Application of the model indicated that it can well describe the effect of human activities on groundwater dynamics in Jiefangzha irrigation system.

关键词： groundwater flow modeling MODFLOW GIS water-saving practices irrigation district

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内蒙古河套灌区碱化土壤的发生原因和特性

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土壤学报 1996年第4期33卷 398-404页

作者：桑以琳内蒙古农牧学院水利工程系

本文简述了内蒙古河套灌区自然概况，盐渍化演变过程和碱化土壤的改良现状。着重揭示灌区内碱化土壤的发生原因、类型、性质和特点。该地区碱化土壤发生原因：１．灌区内最严重的碱化土壤大部分因地下水含大量残余碳酸钠，在干旱气候条... 详细信息

本文简述了内蒙古河套灌区自然概况，盐渍化演变过程和碱化土壤的改良现状。着重揭示灌区内碱化土壤的发生原因、类型、性质和特点。该地区碱化土壤发生原因：１．灌区内最严重的碱化土壤大部分因地下水含大量残余碳酸钠，在干旱气候条件下经强烈蒸发而成。主要特点是通体碱化度高，改良难度大。２．地下水和地表水中的钠离子，受各种因素影响在土体中富集并进入土壤吸收性复合体而使土壤碱化。这部分碱化土壤一般表层碱化度较高，而巨碱化、盐化特点同时存在。３．局部低洼地，因生物作用使土壤碱化。

关键词：内蒙古河套灌区灌区碱化土壤类型性质土壤

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