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Factors influencing diet composition of beef cattle grazing mixed conifer mountain riparian areas

Creator:: Darambazar, Enkhjargal
Abstract:: Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available forage in the pasture, and shrub utilization by cattle during a 30-d late summer grazing period (Trial 1) and the effect of cow age (experience) on grazing distribution and diet composition (Trial 2) in mountain...
Resource Type:: Masters Thesis
Full Text:: away or in the office working. I must thank the members ofmy graduate committee, Dr. Timothy DelCurto

Influence of stocking density on grazing beef cattle performance, diet composition foraging efficiency, and diet quality on a late-spring early-summer native bunchgrass prairie

Creator:: Wyffels, Samuel A.
Abstract:: This study evaluated the influence of cattle stocking density on botanical composition of diet, diet preference, and cattle performance on the Zumwalt Prairie in Northeastern Oregon. In each of two years, 192 cow-calf pairs (549.27 kg, BCS = 4.89) and 48 yearling heifers (383.34 kg, BCS = 5.02) were stratified...
Resource Type:: Masters Thesis
Full Text:: Early- Summer Native Bunchgrass Prairie. Abstract approved: Timothy DelCurto ABSTRACT

Influence of previous cattle and elk grazing on the subsequent diet quality and nutrient intake rate of cattle, deer, and elk grazing late-summer mixed-conifer rangelands

Creator:: Damiran, Daalkhaijav
Abstract:: Four studies were conducted on late-summer diet quality and quantity of cattle (Bos taurus), mule deer (Odocoileus hemionus hemionus), and elk (Cervus elaphus) in response to prior grazing by cattle and elk on mixed-conifer rangelands and on related research techniques. In our first study we assessed a photographic technique to...
Resource Type:: Dissertation
Full Text:: , and Elk Grazing Late-Summer Mixed- Conifer Rangelands. Abstract approved: Timothy DelCurto

Effects of forage quality and type of protein supplement on intake and digestibility in beef steers and performance of postpartum beef cows

Creator:: White, Jenny J.
Abstract:: Two experiments were conducted to evaluate the effects of forage quality and supplemental undegradable intake protein (UIP) level on intake, digestibility, and performance of beef cattle. In Exp. 1, five ruminally cannulated steers (BW = 456 ± 6 kg) were used in a 6 x 5 incomplete Latin square with...
Resource Type:: Masters Thesis
Full Text:: , Timothy DelCurto, Kenric Walburger, and Micah S. Wells Keywords: Beef cattle, Forage Quality, Protein

The influence of cow age on grazing distribution and utilization of mountain riparian areas and adjacent uplands

Creator:: Morrison, Julie A.
Abstract:: The objective of this study was to evaluate the influence of cow age on grazing distribution relative to mountain riparian areas. In each of two years, sixty cow-calf pairs were stratified by age into the following treatments: 1) thirty first calf heifers (442 kg, body condition score (BCS)=4.5), and 2)...
Resource Type:: Masters Thesis
Full Text:: DelCurto The objective of this study was to evaluate the influence of cow age on grazing distribution

The effects of timber harvest and herbivory on understory vegetation and composition of beef cattle diets on forested rangelands

Creator:: Walburger, Kenric J.
Abstract:: The objectives of the experiment were to: 1) determine the relationship between overstory canopy cover and ungulate herbivory on understory production composition and diversity and 2) determine the effects of timber harvest, ungulate herbivory and season of use on botanical composition and nutritional quality of beef cattle diets. Three randomly...
Resource Type:: Dissertation
Full Text:: tenure as superintendent and also for Dr. Timothy DelCurto for helping maintain this project. Dr

Quantities of prostaglandins in whole and extended bovine semen and their potential effect on fertility following insemination

Creator:: Jaeger, John Ralph
Abstract:: Our objectives were to determine 1) the concentration of prostaglandin F2α (PGF2α) in whole and extended bovine semen, 2) if concentrations of prostaglandins in extended bovine semen are correlated to fertility, and 3) if PGF2α administered at the time of artificial insemination would improve conception rate. Concentration of PGF2α tended...
Resource Type:: Dissertation
Full Text:: : Timothy DelCurto Our objectives were to determine 1) the concentration of prostaglandin F2α (PGF2α

Twenty-five years of grazing research at Meadow Creek in the Starkey Experimental Forest and Range

Creator:: Walburger, Kenric
Abstract:: Three studies were conducted to evaluate different grazing systems on mixed conifer rangelands in eastern Oregon, and photo points and aerial photography was used to determine effects of 25 years of cattle grazing on stream channel changes and vegetation responses. The first study was designed to determine if grazing treatment...
Resource Type:: Masters Thesis
Full Text:: Walburger, Timothy DelCurto, Martin Vavra, Larry Bryant, and John Kie authors are graduate student, Oregon

Botanical composition and diet quality of beef cattle grazing at three stocking rates following fuels reduction in mixed conifer forests

Creator:: Clark, Abe A.
Abstract:: An experiment was conducted to evaluate the influence of forest fuels reduction on the diet quality, botanical composition, relative preference, and foraging efficiency of beef cattle grazing at different stocking rates. A split plot factorial design was used, with the whole plots (3 ha) being fuel reduced or no treatment...
Resource Type:: Masters Thesis
Full Text:: Conifer Forests Abstract approved: Timothy DelCurto ABSTRACT: An experiment was conducted to

Changes in Forage Quantity and Quality with Continued Cattle Grazing in a Mountain Riparian Pasture

Creator:: Darambazar, Enkhjargal, DelCurto, Timothy, Ackerman, Callan, Pulsipher, Gary, and Damiran, Daalkhaijav
Abstract:: The objective of this study was to evaluate changes in the quantity, quality, and moisture of available forage in a riparian pasture, and shrub utilization by cattle during a 30-d late summer grazing period. A riparian pasture (44.7 ha) in northeast of Oregon was grazed with 30 yearlings (419 kg,...
Resource Type:: Research Paper
Full Text:: Science Suggested Citation for paper: Darambazar, E., T. DelCurto, C. Ackerman, G. Pulsipher, and D

ScholarsArchive@OSU

Factors influencing diet composition of beef cattle grazing mixed conifer mountain riparian areas

Influence of stocking density on grazing beef cattle performance, diet composition foraging efficiency, and diet quality on a late-spring early-summer native bunchgrass prairie

Influence of previous cattle and elk grazing on the subsequent diet quality and nutrient intake rate of cattle, deer, and elk grazing late-summer mixed-conifer rangelands

Effects of forage quality and type of protein supplement on intake and digestibility in beef steers and performance of postpartum beef cows

The influence of cow age on grazing distribution and utilization of mountain riparian areas and adjacent uplands

The effects of timber harvest and herbivory on understory vegetation and composition of beef cattle diets on forested rangelands

Quantities of prostaglandins in whole and extended bovine semen and their potential effect on fertility following insemination

Twenty-five years of grazing research at Meadow Creek in the Starkey Experimental Forest and Range

Botanical composition and diet quality of beef cattle grazing at three stocking rates following fuels reduction in mixed conifer forests

Changes in Forage Quantity and Quality with Continued Cattle Grazing in a Mountain Riparian Pasture

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