نتایج جستجو برای: heavy grazing

تعداد نتایج: 139962  

2011
Caterina Contini

1. Wetlands as Grazing Grounds 1.1. Wetlands and Traditional Seasonal Grazing: La Puna, Argentina–Bolivia–Chile– Peru 2. Grazing in Wetlands: Should this Threat be Prohibited? 2.1. Maintaining Biodiversity through Semi-Extensive Grazing: Palo Verde National Park, Costa Rica 3. Integrated Grazing Management in Wetlands: New Approaches 3.1. Combining Biodiversity Conservation with Livestock Reari...

Journal: :Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria 2013
Daiana Lima Brito Bruno Stéfano Lima Dallago Helder Louvandini Viviane Rodrigues Verdolin dos Santos Sonia Emília Figueirêdo de Araújo Torres Edgard Franco Gomes Alessandro Francisco Talamini do Amarante Cristiano Barros de Melo Concepta Margaret McManus

This experiment was carried out on 8 ha of Panicum maximum cv. Tanzania pastures, with rotational grazing consisting of 7 days of occupation and 21 days of rest. Four treatments were evaluated: cattle grazing alone (BOV), sheep grazing alone (OVI), cattle and sheep grazing simultaneously (SIM) and cattle grazing followed by sheep (alternate - ALT). Twenty heifers and 30 male Santa Inês lambs we...

2010
Lisette Lenoir Tommy Lennartsson

Arthropod communities were investigated in two Swedish semi-natural grasslands, each subject to two types of grazing regime: conventional grazing from May to September (continuous grazing) and traditional late management from mid-July (late grazing). Pitfall traps were used to investigate abundance of carabids, spiders, and ants over the grazing season. Ant abundance was also measured by mappin...

Journal: :Intermountain journal of sciences : IJS 2011
Abigail J Leary Amy J Kuenzi Richard J Douglass

We examined the effects of grazing on deer mouse (Peromyscus maniculatus) movements into buildings using passive integrated transponder (PIT) technology and small simulated buildings located on 0.6-ha treatment (grazing) and control (no grazing) plots. Twelve experimental 9-day trials were conducted over the course of the study. During these trials, mouse movements into buildings were monitored...

Journal: :مرتع و آبخیزداری 0
احمد صادقی پور استادیار دانشکدة کویرشناسی، دانشگاه سمنان نادیا کمالی دانشجوی دکتری مرتع داری، دانشگاه تهران پریا کمالی دانشجوی دکتری مرتع داری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حامد جنیدی دانشجوی دکتری مرتع داری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

this study investigates monthly and seasonal variations of carbon emission from the soil at different grazing intensities. three areas of exclosure, low and high grazing intensities were selected in ghoosheh region of semnan province. carbon emission was measured monthly, in each treatment applying alkali traps (csc) during a year. emission and grazing data were analyzed, using a factorial expe...

Journal: :Journal of animal science 2009
M Shibata K Matsumoto M Oe M Ohnishi-Kameyama K Ojima I Nakajima S Muroya K Chikuni

The objective of this study was to investigate the differences in the muscle proteome of grass-fed and grain-fed cattle. Eight Japanese Black Cattle 10 mo of age were separated randomly into 2 groups: 1) grazing (grass-fed) and 2) concentrate (grain-fed) groups. All cattle were first housed individually in a stall barn and fed a combination of concentrate ad libitum and Italian ryegrass hay unt...

2017
John E. Gilley B. D. Patton P. E. Nyren J. R. Simanton J. E. Gilley

Grazing and haying effects on runoff and erosion from a former Conservation Reserve Program (CRP) site near Streeter, North Dakota, were determined. Treatments included undisturbed CRP, twice-over rotational grazing, season-long grazing, haying, and burning. Runoff and erosion were measured from simulated rainfall which was applied to 3.7 x 10.7 m (12.0 X 35.1 ft) plots. Following an initial st...

Journal: :مرتع و آبخیزداری 0
محمد فیاض عضو هیئت علمی مؤسسة تحقیقات جنگل‏ها و مراتع تهران حسین پیری صحراگرد دانشجوی دکتری مرتع داری دانشگاه تهران حسن یگانه دانشجوی دکتری مرتع داری دانشگاه تهران انور سور دانشجوی دکتری مرتع داری دانشگاه تهران میر طاهر قائمی عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان آذربایجان غربی

having a comprehensive and correct understanding of grazing behaviour of livestock helps to maximize livestock products. moreover, a good understanding of livestock behavior allows us to predict the effects of livestock on rangeland and finally we can do livestock grazing management the best possible. recognition of grazing behavior of animals can provide solutions enables the optimal use of ra...

2016
Jordan R. Johnson Walter H. Schacht Jerry D. Volesky

Ultrahigh stocking density (113,000 kg of beef per ha to as high as 1 million kg per ha) or mob grazing has been suggested to build soil, increase forage production and plant diversity, and improve grazing distribution compared to less intensive grazing systems. Experimental evidence does not completely support such conclusions. The overall focus of this research is based on the approach of bui...

2006
Daniel G. Milchunas

Grazing by wild and domestic mammals can have small to large effects on plant communities, depending on characteristics of the particular community and of the type and intensity of grazing. The broad objective of this report was to extensively review literature on the effects of grazing on 25 plant communities of the southwestern U.S. in terms of plant species composition, aboveground primary p...

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