نتایج جستجو برای: grazing system

تعداد نتایج: 2244117  

Journal: :مرتع و آبخیزداری 0
مجید آجورلو استادیار گروه مرتع و آبخیزداری، دانشکدة منابع طبیعی، دانشگاه زابل محبوبه ابراهیمیان دانشجوی دکتری آبخیزداری، دانشکدة جنگل داری، دانشگاه پوترا، مالزی رمضانی عبدالله دانشیار دانشکدة مطالعات محیط زیست، دانشگاه پوترا، مالزی

root morphological and distribution responses of signal grass (brachiaria decumbens) to long-term cattle grazing were examined in a tropical pasture in malaysia. the treatments were no grazing by cattle and grazing at a moderate stocking density (2.7 animal unit/ha) under rotational grazing for 33 years. the method consists of taking soil core using a soil corer to a depth of 30 cm and extracti...

ژورنال: مرتع 2023
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Multipurpose use of rangelands is one of the new challenges facing rangeland users, according to which grazing pressure in rangelands can be reduced and an important step can be taken to increase the welfare and empowerment of rangelands, preserve ecosystems and improve ecosystem services related to them. Therefore, the present study was conducted to evaluate the capability of mountain rangelan...

2015
Hui Cao Xinquan Zhao Shiping Wang Liang Zhao Jichuang Duan Zhenhua Zhang Shidong Ge Xiaoxue Zhu

Understanding the plant-pest interaction under warming with grazing conditions is critical to predict the response of alpine meadow to future climate change. We investigated the effects of experimental warming and grazing on the interaction between plants and the grassland caterpillar Gynaephora menyuanensis in an alpine meadow on the Tibetan Plateau in 2010 and 2011. Our results showed that gr...

Journal: :Parasitology 2007
S Athanasiadou D Gray D Younie O Tzamaloukas F Jackson I Kyriazakis

The aim of the present study was to investigate the potential benefits of grazing lactating ewes and their lambs on chicory (Cichorium intybus). Fifty-six certified organic twin-rearing ewes were either drenched with an anthelmintic or not, within 2 days after parturition and were grazed upon either grass/clover or chicory pastures. Around 12 weeks after parturition a subset of 12 lambs per tre...

Journal: :Journal of animal science 2010
M L Looper S T Reiter B C Williamson M A Sales D M Hallford C F Rosenkrans

Multiparous beef cows were managed to achieve marginal (BCS = 4.7 ± 0.07; n = 106) or good (BCS = 6.6 ± 0.06; n = 121) body condition (BC) to determine the influence of forage environment on BW and BC changes, intramuscular fat percentage (IMF), rump fat (RF), and serum hormones during 2 yr. Cows within each BC were randomly assigned to graze either common bermudagrass (CB; n = 3 pastures/yr) o...

2015
Kari E. Veblen Kyle C. Nehring Christopher M. McGlone Mark E. Ritchie

Herbivory by both grazing and browsing ungulates shapes the structure and functioning of terrestrial ecosystems worldwide, and both types of herbivory have been implicated in major ecosystem state changes. Despite the ecological consequences of differences in diets and feeding habits among herbivores, studies that experimentally distinguish effects of grazing from spatially co-occurring, but te...

Journal: :Applied and environmental microbiology 1999
K Jürgens J Pernthaler S Schalla R Amann

We analyzed changes in bacterioplankton morphology and composition during enhanced protozoan grazing by image analysis and fluorescent in situ hybridization with group-specific rRNA-targeted oligonucleotide probes. Enclosure experiments were conducted in a small, fishless freshwater pond which was dominated by the cladoceran Daphnia magna. The removal of metazooplankton enhanced protozoan grazi...

1999
R. Z. Wang

Effects of mowing and grazing on a Leymus chinensis grassland in the Songnen plain of northeastern China were studied using eight replicates of four grazing and mowing treatments. Canopy cover and biomass of the dominant species (L. chinensis) were lower, and cover of the halophyte Suaeda corniculata higher, on grazed than ungrazed; ungrazed plots showed a response to mowing, but not grazing; s...

2014
Brett Howland Dejan Stojanovic Iain J. Gordon Adrian D. Manning Don Fletcher David B. Lindenmayer

Large mammalian grazers can alter the biotic and abiotic features of their environment through their impacts on vegetation. Grazing at moderate intensity has been recommended for biodiversity conservation. Few studies, however, have empirically tested the benefits of moderate grazing intensity in systems dominated by native grazers. Here we investigated the relationship between (1) density of n...

2015
Jonathan Sanderman Jodie Reseigh Michael Wurst Mary-Anne Young Jenet Austin Kurt O. Reinhart

Rotational grazing management strategies have been promoted as a way to improve the sustainability of native grass-based pasture systems. From disturbance ecology theory, rotational grazing relative to continuous grazing can increase pasture productivity by allowing vegetation to recover after short intense grazing periods. This project sought to assess whether soil organic carbon (SOC) stocks ...

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