Index Catalog // ScholarsArchive@OSU

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:: in Northeastern Oregon. Kenric J. Wa/burger,' Timothy De/Curto,2 and Martin Vavr Authors are: 1

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:: AN ABSTRACT OF THE THESIS OF Jenny J. White for the degree of

Influence of age, condition, nutrition and season on serum and urine chemistry in Rocky Mountain elk

Creator:: Quinlan-Murphy, Lonnie J.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Lonnie J. Quinlan-Murphy for the

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:: : Timothy Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available

Grass straw residues as a feed source for wintering beef cattle

Creator:: Stamm, Michele M.
Resource Type:: Masters Thesis
Full Text:: Cattle Abstract approved: Redacted for Privacy Dr. Timothy E4ICurto A survey was conducted during the

The influence of supplemental alfalfa quality on the intake and utilization of low-quality roughages by beef cattle

Creator:: Weder, Christoph E.
Abstract:: Three experiments were conducted to evaluate the influence of quality of supplemental alfalfa quality on beef cattle consuming low-quality meadow grass (MG) roughages. Fifteen steers (250 kg) were assigned randomly to one of three treatments: 1) meadow grass (5.2% CP), no supplement (MNS); 2) meadow grass plus high quality alfalfa...
Resource Type:: Masters Thesis
Full Text:: approved: Timothy DelCurto Three experiments were conducted to evaluate the influence of quality of

Nutritional and managerial considerations for wintering beef cattle in the northern Great Basin

Creator:: Brandyberry, Steven D.
Abstract:: A study was conducted to determine effects of year and season on diet quality of beef cattle grazing northern Great Basin rangelands from 1990 to 1993. Forage quality was high early in the growing season, then declined as seasons progressed (P<.05). Plant chemical composition was higher early in the growing...
Resource Type:: Dissertation
Full Text:: little bluestem, timothy (Phleum pratense), bluegrasses, ryegrass (Lolium spp.) and orchardgrass

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

Management of stockpiled forages and optimal use of supplements by beef cattle while consuming low-quality forages

Creator:: Suverly, Norman A.
Abstract:: Three studies were conducted to evaluate: 1) rotationally grazed forage for late-summer stockpiling; 2) effects of lactation on self-fed supplement intake; and 3) influence of cow age on hand-fed supplement intake. For the first study, treatments consisted of non grazed, 2X and 3X grazed. Crude protein of forage grazed 3X...
Resource Type:: Masters Thesis
Full Text:: Forages Abstract approved: Timothy DelCurto Three studies were conducted to evaluate: 1

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

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

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

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:: ponderosa pine range in eastern Oregon. J. Range Manage. 7: 250-255 Hart, R.H., J. Bissio, M.J. Samuel

Mechanisms of estradiol-17β-induced down-regulation of ovine uterine oxytocin receptors during the estrous cycle

Creator:: Hazzard, Timothy McLagan
Resource Type:: Dissertation
Full Text:: uterine oxytocin receptors during the estrous cycle AN ABSTRACT OF THE THESIS OF Timothy McLagan

Supplementation with lasalocid three times weekly to stocker cattle on pasture

Creator:: DelCurto, Timothy
Abstract:: Two experiments were conducted to study the efficacy of feeding lasalocid to cattle on pasture on a three times weekly basis. In experiment 1, 72 crossbred yearling steers were stratified across a randomized block design of 12 pens including three replications of four treatments. Treatments consisted of: (1) .45 kg...
Resource Type:: Masters Thesis
Full Text:: stocker cattle on pasture AN ABSTRACT OF THE THESIS OF TIMOTHY DELCURTO for the degree of MASTER OF

Intraspecific and Interspecific attachment between cohabitant dogs and their owners

Creator:: Sipple, Nicole M.
Abstract:: Domesticated dogs can form attachment bonds with their owners and use them as a secure base to receive comfort during distress and confidence to explore novel environments. Owners often adopt multiple dog in hopes they will have ameliorative effects during periods of absence from their owner. The purpose of this...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Timothy Hazzard, Committee Member, representing Animal and Rangeland Sciences

Examining the Effects on Salivary Cortisol Levels of Shelter Volunteers Interacting with Familiar Dogs

Creator:: Duvall, Holly K.
Abstract:: Heightened cortisol levels are a typical physiological response to stress. The many responsibilities of animal shelter workers can lead to increased stress levels and negative effects on their job satisfaction and overall wellness. As a result, workers are subject to burnout and compassion fatigue. While working in shelter environments may...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Timothy Hazzard, Committee Member, representing Animal and Rangeland Sciences

The ability of a yeast-derived cell wall preparation to minimize toxic effects of high-alkaloid tall fescue straw in beef cattle

Creator:: Merrill, Melissa L.
Abstract:: Two experiments were conducted to evaluate the influence of a yeast-derived cell wall preparation (YCW) on forage intake and digestibility, ruminal fermentation characteristics, serum prolactin and prolactin stores, and milk production in beef cattle consuming high-alkaloid tall fescue straw. In Exp. 1, 16 Angus x Hereford ruminally cannulated steers (200...
Resource Type:: Dissertation

Postpartum disorders associated with high potassium forages in Holstein cows

Creator:: Crill, Roberta L.
Abstract:: Until recently, occurrence of milk fever (MF) has been attributed to prepartum calcium intake. However, researchers in Iowa have concluded that high prepartum dietary potassium (K) is the major cause of MF. Potassium concentrations have been increasing on manure fertilized soils over the last 20 years. Grasses grown on these...
Resource Type:: Masters Thesis
Full Text:: Potassium Forages in Holstein Cows. Abstract approved: Diane J. Carroll Until recently, occurrence of

Nutritional effects of big sagebrush (Artemesia tridentata) Nutt. on deer

Creator:: Smith, Gary Eugene
Resource Type:: Masters Thesis
Full Text:: encountered during the course of this study. Sincere thanks are extended to my major professor, Dr. J. E

Ryegrass straw and whole corn plant pellets as alternative roughages for horses

Creator:: Schurg, William Alan
Abstract:: This study involved three separate experiments employing a total of 29 horses and 4 rabbits. The purpose of these studies was to investigate the use of various quantities and forms of ryegrass straw in horse rations, and to determine the use of whole corn plant pellets as an alternative roughage...
Resource Type:: Masters Thesis
Full Text:: Abstract Approved: Redacted for Privacy Dr. J. E. Jldfie ld This study involved three separate

Pasture Production and Lamb Growth from Dryland Hill Pastures in Western Oregon

Creator:: Gultekin, Yunus
Abstract:: Pasture legumes that persist under challenging agro-ecological conditions are crucial to ensure high lamb growth rates in dryland pastures. Pasture and lamb production from white clover (TF-Whc), birdsfoot trefoil (TF-Bft), balansa clover (TF-Bc) and subterranean clover (TF-Sc) planted with tall fescue either as binary mixtures or as a diverse combination...
Resource Type:: Masters Thesis
Full Text:: also grateful to my thesis committee member Dr. Shelby J. Filley. Her feedbacks on my work were very

Nutrition and management of the beef unit for production of slaughter animals on range and improved pastures in southeastern Oregon

Creator:: Daugherty, Dennis A.
Abstract:: Studies were conducted over a two year period to evaluate alternative finishing methods for spring and fall-born beef cattle. Management alternatives from birth to slaughter included season of calving, lactating cow nutrition, preweaning calf nutrition, weaning age, calf and yearling winter nutrition, range and irrigated pasture supplementation, grazing practice, range...
Resource Type:: Dissertation
Full Text:: June 1981 APPROVED: Redacted for Privacy Professq J of Animal Science in charge of major Redacted

Nutritional aspects of artificially feeding captive and wild deer

Creator:: Dean, Ronald E.
Abstract:: Most of the nutritionally related difficulties of winter feeding deer apparently result from either poor acceptability of artificial rations or digestive disturbances that result from feeding starved animals feeds to which they are not accustomed. Reported in this thesis are studies conducted with both captive and wild deer concerning acceptability...
Resource Type:: Dissertation
Full Text:: . Knapp, Dr. J. E. Oldfield, and Dr. R. J. Raleigh. Appreciation is also extended to the many individuals

The effect of precipitation variation and fertilization level on the nutritive value of wheat residue

Creator:: Carey, Anne C.
Abstract:: Five simulated precipitation patterns characteristic of the Columbia Basin and Plateau region and six fertilization rates were evaluated for their effect on percent crude protein, percent in vitro dry matter digestibility, fiber content, and yield of wheat aftermath on a commercial farm in north central Oregon. The higher moisture regimes...
Resource Type:: Masters Thesis
Full Text:: - bers, Drs. James E. Oldfield, Robert J. Raleigh, and Russel Crisman. Thank you also to Bev Raleigh for

Response of Canada milkvetch (Astragalus canadensis var. mortonii (Nutt.) Wats.) to range and forest improvement practices in Northeastern Oregon

Creator:: Wood, Benjamin William
Abstract:: The response of Canada milkvetch (Astragalus canadensis var. mortonii) to range and forest improvement practices was studied on a stand of mixed-coniferous forest which was clear -cut and burned in 1963 and 1964, respectively. The field studies were conducted on the Hall Ranch of the Eastern Oregon Experiment Station during...
Resource Type:: Dissertation
Full Text:: Managetnent presented on _-=-..... 5_.J2;;::;-;..klo:;;.~_.:.......JI....I.D-:)"-J-! ./-/-.+q_'..:..7..;..1

In vitro and in vivo evaluations of chemically treated ryegrass straw

Creator:: Anderson, Daniel Craig
Abstract:: Seven in vitro trials were conducted to compare the effects of soaking annual ryegrass straw in solutions of sodium hydroxide (Na₄OH), potassium hydroxide (KOH), ammonium hydroxide (NH₄OH), or sodium formate (NaCHO₂) at varying levels. Dry matter digestibility (DDM) was the criterion used to measure treatment response. A 3 x 3...
Resource Type:: Dissertation
Full Text:: ) (Degree) in ANIMAL SCIENCE presented on )j--L's 77) 1 (Major) te) Title: IN VITRO AND IN VIVO

Daily and alternate day supplementation of urea of biuret to ruminants consuming low-quality forage

Creator:: Currier, Thomas A.
Abstract:: Data is limited evaluating infrequent supplementation of urea or biuret to ruminants consuming low-quality forage (<6% crude protein). Therefore, a series of experiments were designed to compare the effects of daily (D) and alternate day (2D) supplementation of two non-protein nitrogen (NPN) sources (urea or biuret) to ruminants consuming low-quality...
Resource Type:: Masters Thesis
Full Text:: addition, Oltjen et al. (1969) evaluated urea and biuret as CP supplements to steers consuming timothy hay

Effects of strip versus continuous grazing management on diet parameters and performance of yearling steers grazing native flood meadow vegetation in eastern Oregon

Creator:: Blount, David Kenneth
Abstract:: A trial was conducted May 1 to September 4, 1989 at the Eastern Oregon Agricultural Research Center (EOARC) Burns, OR to examine the effects of strip or continuous grazing management on the diet and performance of steers grazing native flood meadows. The objective was to determine if strip grazing would...
Resource Type:: Masters Thesis
Full Text:: meadow foxtail and timothy (Pieuin pratense L.) on cattle fed one of the two fresh cut forages. The

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

Effect of rumen fluid upon the preservation of bovine spermatozoa

Creator:: Lobo, Carlos Alfredo
Abstract:: Experiments were conducted to determine the effect of rumen fluid on live and motile spermatozoa of semen extended in yolk-citrate and stored at 4°C. Preliminary work showed that levels of rumen fluid below 10 percent were beneficial in keeping spermatozoan activity up to 14 days in storage. For more revealing...
Resource Type:: Masters Thesis
Full Text:: combinations of chopped timothy hay, con- centrates and salt, timothy hay constituting 2/3-8/ 9 of total

Crossbred lamb production from Columbia and Suffolk ewes

Creator:: Levine, Joel Martin
Resource Type:: Masters Thesis
Full Text:: COLUMBIA AND SUFFOLK EWES I. EWE PRODUCTION AND LAMB TRAITS1,2 J. M. Levine 3 and William Hohenboken 3 1

Cellular characteristics of canine trophoblasts

Creator:: Sahlfeld, Laura
Abstract:: This research investigated the development of a novel canine model to study preeclampsia. Normal canine placental development has morphologic and histologic similarities to the shallow trophoblast invasion occurring with preeclampsia in humans, which makes the dog a particularly good choice for modeling this disease and will be an improvement on...
Resource Type:: Masters Thesis
Full Text:: . CONTRIBUTION OF AUTHORS Dr. Timothy Hazzard assisted in the collection of placentas and edited the

Early-vegetative meadow hay versus alfalfa hay as a supplement for beef cattle consuming low-quality forages

Creator:: Horney, Marc R.
Resource Type:: Masters Thesis
Full Text:: that CP levels in timothy declined with advancing maturity. Crude protein levels at early bloom

Mechanism of action of ST-669 in Chlamydia spp.

Creator:: Scharzenberger, Stormy Marie
Abstract:: Our laboratory group is studying the molecular target of a novel, broad-spectrum antiviral compound known as ST-669. This compound has activity against a variety of different viruses and also obligate intracellular bacteria in the genera Coxiella and Chlamydia. The goal of this thesis project was to help elucidate the mechanism...
Resource Type:: Honors College Thesis
Full Text:: ______________________________________________________________________________ Timothy Hazzard, Committee Member, representing Animal Sciences

Evaluation of low quality roughages and agricultural by-products as livestock feed

Creator:: Hussain, Imdad
Abstract:: Nine feeding trials and four laboratory scale experiments were conducted in this study. The study consisted of: (1) use of grass straw:corn juice (CJ) silages with fishmeal and/or alfalfa hay supplementation in beef heifers, sheep, pregnant dairy heifers, water buffaloes and Hereford cows; (2) use of cull onions:grass straw silages...
Resource Type:: Dissertation
Full Text:: ., 1988; Hunt et al., 1990). Chiquette et al. (1992) reported that ammoniation of mature timothy

Optimum combination of time and rumen fluid in three in vitro techniques used to predict forage digestibility

Creator:: McNeill, David Gingles
Resource Type:: Masters Thesis
Full Text:: . Method 3 The effect of rumen liquor levels on the rate of percent dry matter digestion using the N. J

Non-conventional feedstuffs in rabbits and poultry nutrition : utilization and effects of feed processing methods

Creator:: Tor-agbidye, Yakubu
Resource Type:: Dissertation
Full Text:: and the rest, thanks for all your support morally economically and otherwise, and to uncle, Mr. J. I

The effect of lasalocid on fall calving beef cows

Creator:: Hopman, Bruce T.
Abstract:: Forty-two fall-calving crossbred cows were equally allotted to six pens of seven cow-calf pairs each. Two treatments (0 and 200 mg lasalocid/head/day) with three replications were used to determine the effects of lasalocid on fall-calving beef cows. The cows were fed grass hay, haylage and pasture ad libitum. The cow-calf...
Resource Type:: Masters Thesis
Full Text:: conducted by J. Paterson on spring calving cows to determine the effects of lasalocid on milk production

Effect of varying levels of certain enzymes on digestibility of roughage in the rumen

Creator:: Miller, Alvin Earl
Resource Type:: Masters Thesis
Full Text:: alfalfa hay and 6. 07 for timothy hay, three hours after feeding. Yang et al. (104, p. 322 -324

Evaluation of bamboo as livestock forage and applications of Yucca schidigera and Quillaja saponaria products in agriculture

Creator:: Greenway, Stephanie L.
Abstract:: Byproducts of bamboo processing, such as leaves and branches, may have potential as a livestock feedstuff. The objectives of this study were to evaluate seasonal changes in proximate composition of several bamboo species and reed canarygrass, and subsequently determine the digestibility of bamboo in ponies. Monthly samples of Phyllostachys bissetii,...
Resource Type:: Masters Thesis
Full Text:: .). Saponin, non-saponin, tannin, and non-tannin fractions ofYE and QE (200 J..LL/5 g excreta) were also

Assessing the phosphorus and potassium balances in Oregon's dairies

Creator:: Higgs, Kathryn N.
Abstract:: A field study was conducted to assess phosphorus (P) and potassium (K) concentrations of both lactating and dry cow diets on Oregon's dairies. Thirty-seven dairy farms, located in western Oregon, were grouped according to geographic region, valley (V) or coast (C), and herd size, small (S) or large (L). Farms...
Resource Type:: Masters Thesis

Alternate methods of fattening steers in Eastern Oregon

Creator:: Whittington, David Lynn
Abstract:: Studies were conducted at the Squaw Butte Experiment Station during two consecutive years to : (1) compare various internal indicators and chromic oxide to estimate forage intake and fecal production, (2) compare methods of producing slaughter weight steers using maximum quantities of forage and minimum quantities of grain. Actual fecal...
Resource Type:: Dissertation
Full Text:: also given to Dr. Robert J. Raleigh, Squaw Butte Experiment Station Director, for his help and advice

The Effects of Animal Interactions on Zookeeper Attachment and Possible Implications for Animal Welfare

Creator:: Koktas, Cemal
Abstract:: Human-animal relationships, emerging as an aftermath of human-animal interactions, have been increasingly investigated in recent years. It is possible to see the results of the effects of these relationships on both human and animal welfare. This study predicted that caretakers with hands-on contact with their zoo animals would have significantly...
Resource Type:: Masters Thesis
Full Text:: Attachment Pet Survey (LAPS) was originally conducted by Timothy P. Johnson, Thomas F. Garrity, and Lorann

Comparison of high and low tannin sorghum grain with low quality roughage for feeding ruminants

Creator:: Wanyama, Justin Mukami
Abstract:: Two studies were conducted to compare lamb feedlot performance and digestibility of nutrients by lambs fed rations containing bird-resistant and bird-susceptible sorghum grain with 20 or 40% tall fescue hay as a source of roughage. Four rations were fed ad libitum on the performance study and at 80% of ad...
Resource Type:: Masters Thesis
Full Text:: fed low quality timothy (Phleum pratense) digested the greatest amount 33 of cellulose, while

Effect of callipyge gene on lamb growth, carcass characteristics, and meat quality

Creator:: Srinivasan, Haribaskar
Abstract:: Callipyge (CLPG, n=16) and normal (N, n=11) lambs were produced from Polypay dams and Dorset sires heterozygous for the CLPG gene to study the effects of the gene on growth and carcass and meat quality parameters. CLPG lambs had higher average daily gain than N lambs (0.26 vs 0.23 kg/day,...
Resource Type:: Masters Thesis
Full Text:: Debessai, Timothy Hazzard and Derek McLean for providing me support, company and advice; Lucy Cross

Effects of alfalfa on uterine growth of ovariectomized prepubertal ewe lambs

Creator:: Sexson, Clinton
Abstract:: Alfalfa accumulates phytoestrogens and when ingested binds the estrogen receptor and induces morphological changes similar to endogenous estrogens. The objective of this study is to evaluate morphological changes in uteri, vulva, and teats of ovariectomized prepubertal ewe lambs. Eighteen prepubertal ewe lambs were ovariectomized in November 2000 and fed nonestrogenic...
Resource Type:: Masters Thesis

The effect of varying levels of readily available carbohydrates on urea utilization

Creator:: Wright, Rodney Joseph
Abstract:: The object of this research was to study the effect of readily available carbohydrates (RAC) upon the utilization of urea in fattening rations and to determine the effect upon carcass characteristics that determine quality and yield grades. A 2 x 2 latin square designed feedlot trial comparing urea at 0.5%...
Resource Type:: Masters Thesis

Gene expression in the peripartum canine placenta

Creator:: Fellows, Elizabeth Jane
Abstract:: This research investigated gene expression in the canine placenta during the peripartum period. Previous studies have recognized molecular changes that occur in the placenta around the time of placental release in other species, but no study has looked at gene expression in the late gestation canine placenta. Of particular significance...
Resource Type:: Masters Thesis
Full Text:: . CONTRIBUTIONS OF AUTHORS Dr. Timothy Hazzard assisted in the collection of placentas and edited the

Effect of Agronomically Selenium Biofortified Hay on Oxidative Status, Metabolic and Inflammatory Biomarkers, and Immune Response of Transition Primiparous Dairy Cows and Se Transfer and Glutathione Peroxidase Activity in their Calves

Creator:: Jaaf, Shana S.
Abstract:: During the peripartum period (3 weeks before through 3 weeks after calving, a.k.a. “transition”), high producing dairy cows experience, among others, , oxidative stress and immune suppression that compromise performance and increased incidence of diseases.Among trace minerals, supplementation of Selenium (Se) can help to improve the transition by enhancing glutathione...
Resource Type:: Dissertation
Full Text:: Mid lactation Na2SeO31, YSe, FSe (Alfalfa/timothy) Se mg/kg DM CTR2= 0.12 Na2SeO3 = 0.80 YSe

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