نتایج جستجو برای: available forage

تعداد نتایج: 581122  

2015
Rachel Lord Knut Kielland

The increasing frequency and extent of wildfires in Alaska over the last half century has spurred increased interest in understanding the role of post-fire succession on vegetation establishment. Our primary goal was to examine how wildfire affects production and distribution of winter forage for moose (Alces alces) in interior Alaska, and how these changes in forage availability control forage...

Journal: :Annals of botany 2008
J King D Thorogood K J Edwards I P Armstead L Roberts K Skøt Z Hanley I P King

BACKGROUND AND AIMS Perennial ryegrass (Lolium perenne) is one of the key forage and amenity grasses throughout the world. In the UK it accounts for 70 % of all agricultural land use with an estimated farm gate value of 6 billion pounds per annum. However, in terms of the genetic resources available, L. perenne has lagged behind other major crops in Poaceae. The aim of this project was therefor...

2006
Blair L. Waldron Dale R. ZoBell Kenneth C. Olson Kevin B. Jensen Donald L. Snyder

Extending grazing into the winter, as opposed to feeding of harvested forages, can increase the sustainability of ranching in the western US. This study was conducted to determine the economic value of grazing stockpiled forage kochia (Kochia prostrata [L.] Scrad.) and crested wheatgrass (Agropyron desertorum [Fisch. Ex Link] Schultes) during the fall and winter. Changes in cow body weight, bod...

2017
R. E. Kruse

This research addressed the hypothesis that spring precipitation data can be used to detect agricultural drought early in the growing season. The Rangetek range model was used to simulate yearly forage data based on historical precipitation and temperature records from the USDA-ARS Fort Keogh Livestock and Range Research Laboratory (Miles City, MT) and the Agriculture and Agri-Food Canada Manyb...

Journal: :Environment, Development and Sustainability 2021

Abstract This study examined the effects of transhumance pressure on total abavoe-ground biomass and forage availability rangelands in Benin. We also investigated implications land cover transitions over a 31-year period. Our work was carried out three regions Benin representing distinct phytogeographic regimes: Ketou, Tchaourou, Sinende. Ground-truthing sampling herbaceous phanaerophyte strata...

Journal: :پژوهش های علوم دامی ایران 0
حسین ارزانی زینب جعفریان جلودار علی نیکخواه حسین آذرنیوند مهدی قربانی

to estimate the grazing capacity in each region it is necessary to determine animal requirement based on forage quality and animal unit weight of dominant sheep breed. in present study animal unit weight of farahani sheep breed was investigated. two herds were selected. thirty animals including 15 three and four years' old ewes, 5 nine months old lambs, 5 six months old lambs, 5 three and four ...

2014
Marianne Iversen Per Fauchald Knut Langeland Rolf A. Ims Nigel G. Yoccoz Kari Anne Bråthen

The spatial and temporal distribution of forage quality is among the most central factors affecting herbivore habitat selection. Yet, for high latitude areas, forage quantity has been found to be more important than quality. Studies on large ungulate foraging patterns are faced with methodological challenges in both assessing animal movements at the scale of forage distribution, and in assessin...

2012
Nichola M. Knox Andrew K. Skidmore Herbert H.T. Prins Rob Slotow Cornelis van der Waal William F. de Boer

Forage quality in grassland-savanna ecosystems support high biomass of both wild ungulates and domestic livestock. Forage quality is however variable in both space and time. In this study findings from ecological and laboratory studies, focused on assessing forage quality, are combined to evaluate the feasibility of a remote sensing approach for predicting the spatial and temporal variations in...

Journal: :مرتع و آبخیزداری 0
حسین ارزانی علی اسفندیاری حمید نوروزیان مهدی قربانی جواد ترکان

knowledge on animal requirement, available forage and its quality is fundamental for successful livestock and range management. since sheep is dominant grazing animal of rangelands in iran and there are over 27 sheep breeds and each breed has special body size, physiological condition and consequently different daily nutrition requirement, animal unit should be determinated for dominant breed o...

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