نتایج جستجو برای: grazing cattle

تعداد نتایج: 62587  

2013
Mohammad Chamani

The aim of this study was to investigate the behavior of cattle and sheep grazing and expression of behavioral differences between cattle and sheep is because, to thereby allow grazing management strategies amid animal feed. Grazing circumstances, the daily consumption and duration is grazing, it can result from consumption of feed bite mass (mass and carved teeth) and tooth cutting (bite rate)...

2010
John D. Arthington

Introduction Pasture forage is the most significant contributor to the trace mineral nutrition of Florida's grazing beef cattle. Sandy, loworganic-matter soils have long been linked to the production of forages with low trace mineral content. In addition, the organic soils associated with the Okeechobee basin have been associated with the production of forages high in molybdenum, an antagonist ...

1998
JOHN W. WALKER RODNEY K. HEITSCHMIDT

Research was conducted on the effects of rotational grazing (RG) compared to continuous grazing (CG) on the behavior of cattle grazing on rangelands. Different livestock den&tics in the RG treatments were created by varying the size of paddocks in a 4651a, U-paddock, cell deaigntd RG treatment stocked at a rate of 3.6 ha/cow/yr. Paddock sizes of 30 and lo-ha were used to simulate RG with 14 (RG...

2003
D. W. BAILEY

Bailey, D.W., Walker, J.W. and Rittenhouse, L.R., 1990. Sequential analysis of cattle location: day-to-day movement patterns. Appl. Anita. Behav. Sci., 25: 137-148. Studies were conducted in Texas and Colorado to determine if there were consistent movement patterns of grazing cattle. Based on optimal foraging theory, we hypothesized that cattle would select the same area of a pasture to graze f...

1976
DAVID MATLAGA KEITH KAROLY

The effect of cattle grazing on the genetic structure of native grass populations has received little attention. We investigated the effect of cattle grazing on genetic variation in Idaho fescue (Festuca idahoensis Elmer) using ISSR (inter-simple sequence repeat) DNA markers. The ISSR markers are hypervariable and are generally interpreted as being selectively neutral. Idaho fescue tillers were...

Journal: :international journal of environmental research 2014
m. manubolu s. eklund p.c. dutta f. malmlöf

cyanobacteria blooms are common in baltic sea and their intensity have been increased due toanthropogenic eutrophication. in this study we investigated the cyanotoxin levels in the water samplescollected from four different locations in the baltic sea at three different seasons including summer 2011.protein phosphatase 2a (pp2a) inhibition assays, enzyme-linked immunosorbent assays (elisa) and ...

2007
C. J. BOOM R. A. DYNES A. D. MACKAY

A dynamic model for nematode parasites in lambs which links their adult parasite burden with liveweight gain was extended to investigate alternate grazing with cattle to provide relatively larval-free pasture for finishing lambs. Liveweight performance of weaned lambs was tracked fortnightly under rotational grazing using three cattle:sheep ratios, with three initial parasite burdens and two in...

2015
Kelly Anne Farrell W. Stanley Harpole Claudia Stein Katharine N. Suding Elizabeth T. Borer Erjun Ling

Cattle grazing and invasion by non-native plant species are globally-ubiquitous changes occurring to plant communities that are likely to reverberate through whole food webs. We used a manipulative field experiment to quantify how arthropod community structure differed in native and non-native California grassland communities in the presence and absence of grazing. The arthropod community was s...

Journal: :Journal of animal science 2007
J A Stuedemann A J Franzluebbers

Performance and production of growing cattle (Bos taurus) on Coastal Bermudagrass [Cynodon dactylon (L.) Pers.] pasture are affected by forage allowance, but possible interactions with fertilizer nutrient source (i.e., inorganic vs. organic) and time have not been well described. We evaluated the effects of 3 nutrient sources with equivalent N rates: 1) inorganic, 2) crimson clover (Trifolium i...

2008
Michael L. McInnis MICHAEL L. McINNIS JAMES McIVER

Accelerated erosion of streambanks in grazed riparian pastures is of concern to land managers. We tested the hypothesis that providing cattle free-choice off-stream water and trace mineralized salt would lessen negative impacts of grazing on cover and stability of streambanks compared to pastures lacking these amenities, and may therefore reduce the potential of accelerated erosion. The study w...

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