نتایج جستجو برای: grazing season

تعداد نتایج: 70424  

Journal: :Ecological applications : a publication of the Ecological Society of America 2017
Adrian P Monroe Cameron L Aldridge Timothy J Assal Kari E Veblen David A Pyke Michael L Casazza

Human land use, such as livestock grazing, can have profound yet varied effects on wildlife interacting within common ecosystems, yet our understanding of land-use effects is often generalized from short-term, local studies that may not correspond with trends at broader scales. Here we used public land records to characterize livestock grazing across Wyoming, USA, and we used Greater Sage-grous...

2017
S. A. Gunter R. L. Gillen

Forage management practices influence the quantity and quality of forage available to grazing cattle. The objectives of this experiment were to determine the effects of prescribed fire or herbicides on the density of forbs, the production and nutritive value of the herbage, and the performance of beef steers grazing Yellow bluestem [Bothriochloa ischaemum (L.) Keng var. ischaemum (Hack.) Celari...

2005
Barbara H. Allen-Diaz

Livestock grazing plays an integral role in the grass-dominated ecosystems of the Sierra Nevada. Grazing has been asserted to influence such key ecological characteristics as water quality, net primary productivity, nutrient cycling, plant and animal diversity, wildlife habitat availability, and oak regeneration (Belsky and others 1999, Kauffmann and Krueger 1984). Although there are many repor...

ژورنال: علوم آب و خاک 2009
ارزانی, حسین, مسیبی, مرضیه, نیکخواه, علی,

Information on animal requirements for determination of rangeland grazing capacity is essential. Animal requirements depend on its live weight, age, physiological condition and quality of available forage. There are more than 20 sheep breeds with different body sizes grazing in various climatic zone's rangelands of Iran, so animal unit equivalent of each breed should be determined independently...

2013
Tim Keady Noel McNamara

In mid-season prime lamb production it is essential to optimise lamb performance from grazed pasture to minimise costs and so improve margins from sheep production. This is achieved by continuously supplying high feed value herbage for the duration of the grazing season. Feed value is a combination of nutritive value (i.e. digestibility) and intake characteristics (which is a combination of her...

Journal: :Ecological applications : a publication of the Ecological Society of America 2011
Jason P Field David D Breshears Jeffrey J Whicker Chris B Zou

Rangelands are globally extensive, provide fundamental ecosystem services, and are tightly coupled human-ecological systems. Rangeland sustainability depends largely on the implementation and utilization of various grazing and burning practices optimized to protect against soil erosion and transport. In many cases, however, land management practices lead to increased soil erosion and sediment f...

2013
B. Deribe M. Taye

On farm monitoring of central highland goats were conducted in Sekota district of the Amhara regional state, Ethiopia to evaluate the growth performances under the traditional management practices. On farm feeding trial was also conducted to see the feeding performances and carcass characteristics of Central Highland goat types. Data used for the study was collected from randomly selected on-fa...

2007
R. James Ansley Michael J. Castellano

There is increased interest in the use of summer-season fires to limit woody plant encroachment into grasslands, but effects of these fires on grasses are poorly understood. We quantified effects of repeated winter fires, repeated summer fires, and clipping (to simulate grazing) on aboveground total yield, live yield, and percentage of live tissue of C3 Texas wintergrass (Nassella leucotricha [...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید