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Effects of holistic grazing management on milk production,weight gain,and visitation to grazing areas by livestock and wildlife in Laikipia County,Kenya

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Ecological Processes 2016年第1期5卷 216-227页

作者： Priscilla K.Lalampaa Oliver V.Wasonga Daniel I.Rubenstein Jesse T.Njoka Faculty of Agriculture Department of Land Resource Management and Agricultural TechnologyUniversity of NairobiP.O.Box 29053-00625NairobiKenya Princeton University PrincetonNJ 08544-2016USA

Background:grazing is an important management tool for maintaining healthy ecosystems and improving rangelands ***,its effectiveness for this purpose is dependent on timing and frequency of grazing,as well as the type of *** the effects of grazing management on rangeland ecosystems is critical in ensuring sustainable use of grazing resources and enhanced livestock *** study assessed the effects of holistic grazing on animal productivity and range use pattern in Laikipia County of ***:The results revealed that the average milk yields(106±20.1)of animals in holistic grazing areas(HGA)were significantly(pgrazing areas(TGA)(101±20.1).Weight gain of animals in HGA was significantly(0.13±0.01)higher as compared to those in TGA(0.07±0.01).The number of livestock grazing was significantly(pgrazing was significantly(pgrazing management has the potential to improve animal performance,as well as condition of range areas as evident in the preference shown by frequent visits to HGA by both livestock and wildlife.

关键词： Camera traps continuous grazing Animal performance Rest periods Wildlife visits

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Influences of various grazing systems on community biomass of a desert grassland in Inner Mongolia,China

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Research in Cold and Arid Regions 2012年第4期4卷 303-309页

作者： RuiRui Yan XiaoPing Xin ZhiJun Wei ShiMin Liu Jing Yang GuiXia Yang . Rangeland Ecology Hulunbeir Grassland Ecosystem Research Station Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences. No. 12 Zhongguancun South Street Beijing 100081 China Rangeland Ecology Department of Grassland Science College of Ecological and Environmental Science Inner Mongolia Agricultural University. No. 306 Zhaowuda Road Hohhot Inner Mongolia 010018 China Animal Nutrition Specialist Faculty of Natural and Agricultural Sciences The University of Western Australia. 35 Stirling Highway Crawley WA 6009 Australia

This study investigated the effects of various grazing systems, including continuous grazing, rotational grazing, and no-grazing systems, on the community biomass in the Stipa breviflora Griseb desert grassland during the grazing seasons in 2005, 2006, and 2007, based on study sites established in 1999. We found that the seasonal dynamics of the aboveground biomass were quite similar among the three treatments, which reached peak values in period from August to September during each study year. The continuous grazing system reduced the aboveground biomass from 2005 to 2007 under drought conditions, and the rotational grazing and no-grazing systems maintained more aboveground biomass than the continuous grazing system did. The belowground biomass declined with the increase of soil depth among the three treatments, and in the surface 20-cm soil layer it accounted for more than 60% of the total biomass. The belowground biomass was found to be highly correlated with soil depth under rotational grazing. The total belowground biomass within the 0--100-cm soil layer for rotational grazing was sig- nificantly higher than for continuous grazing and no-grazing, and had 15,775 kg/ha more biomass. Our results demonstrate that conservative rotational grazing can alleviate grassland deterioration by reserving more aboveground and belowground biomass than the continuous grazing system does.

关键词： continuous grazing rotational grazing aboveground biomass belowground biomass Stipa breviJlora Griseb

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Effect of grassland management on the occurrence of the poisonous species Senecio jacobaea

Effect of grassland management on the occurrence of the pois...

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ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： M.Suter J.Connolly A.Lüscher Swiss Grassland Society Reckenholzstrasse 1918046 ZurichSwitzerland UCD School of Mathematical Sciences University College DublinDublin 4Ireland Agroscope Reckenholz-Tanikon Research Station ART Reckenholzstrasse 1918046 ZurichSwitzerland

＜正＞Introduction Senecio jacobaea L.（tansy ragwort） is a poisonous weed in grasslands of various coritinents（*** States, Great Britain,Central Europe,New Zealand）.In Central Europe,the species seems to have increased its dispersion in the last *** further spread of the species into farmland must be prevented because *** contains pyrrolizidine-alkaloids

关键词： weed control nitrogen applied continuous grazing openness of sward case-control study

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Changes in sward composition under different grazing management

Changes in sward composition under different grazing managem...

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ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： Pavlu V Hejcman M Pavlu L Gaisler J Crop Research Institute Prague CZ-460 11LiberecCzech Republic

Introduction Suitable grassland management and its intensity depended on present vegetation,local possibilities and our target *** seems to be an interesting alternative to cutting in order to maintain species-rich grasslands. Materials and methods Introducing intensive and extensive grazing on abandoned grassland was studied in years 1998-2004. Applied treatments were:intensive grazing(IG),1 cut followed by intensive grazing(ICG),extensive grazing(EG),1 cut followed by extensive grazing(ECG),and unmanaged grassland(U) as the *** paddocks were replicated *** were made in permanent 1 m×1 m plots using a continuous grid of nine 0.33 m×0.33 m subplots in four

关键词： grassland continuous grazing cattle Principle Response Curve grazing intensity

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