Digital Commons Network^™

Assessment Of Chenopodium Quinoa Willd. Genetic Diversity In The Usda And Cip-Fao Collections Using Ssr?S And Snp?S, Shawn A. Christensen

Theses and Dissertations

Quinoa (Chenopodium quinoa Willd.) is a staple grain for the indigenous people of the Andean region of South America with excellent nutritional qualities, including protein content. The objective of this study is to report on the development of fluorescence-tagged simple sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs) to (1) genetically characterize the inherent diversity of 152 accessions of C. quinoa; (2) determine to what degree the CIP-FAO collection represents the range of genetic diversity in quinoa; and (3) test four hypotheses regarding quinoa?s center of diversity, Highland and Lowland clustering patterns, origin of Lowland varieties, and the …

Relationships Of Intercropped Maize, Stem Borer Damage To Maize Yield And Land-Use Efficiency In The Humid Forest Of Cameroon, A. Chabi-Olaye, C. Nolte, F. Schulthess, C. Borgemeister

All Peer-Reviewed Publications

Stem borers are the most important maize pests in the humid forest zone of Cameroon. Field trials were conducted in the long and short rainy seasons of 2002 and 2003 to assess the level of damage and yield reductions caused by stem borers in monocropped maize and in maize intercropped with non-host plants such as cassava, cowpea and soybean. The intercrops were planted in two spatial arrangements, i.e. alternating hills or alternating rows. All intercrops and the maize monocrop were grown with and without insecticide treatment for assessment of maize yield loss due to borer attacks. The land-use efficiency of …

Online Dictionary Of Invertebrate Zoology: F, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

face facet facette facetted facial facialium facies facio-orbital factor facultative faeces Fahrenholz's falcate falces falciform falciger falcis falculate falsadentes false falx famulus fan fang farctate farinaceous fascia fasciate fascicle fasciculus fasciole fascio-maculata fascio-punctate fastening fastigiate fastigium fat fate fauces fauna faunal faveolate feces fecula fecundate fecundity feedback feeder feeding feeler feet felt female femoro-alary femorogenu femorotibial femur fenestra fenestrate fenestration fenestrella fenestrule fente feral ferment fermentation ferreous ferruginous ferrule fertile fertility fertilization fertilizin festivus festoon festoons fetid fiber fibril fibrillar fibrin fibrinogen fibrocyte fibroin fibroplasm fibrous fibula fide filament filamentary filaria filariform filate filator file filial filiation filibranch filicornia filiform …

Online Dictionary Of Invertebrate Zoology: G, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

galea gallery gallicola gallicolae gallicolous galliphagous galvanotaxis galvanotropism gametangiogamy gametangium gamete gametocyte gametogamy gametogenesis gametogenetic gametogeny gametogonium gametogony gametotoky gamma gamobium gamodeme gamogenesis gamogonic gamogony gamones gamophase ganglia gangliate ganglion ganglionic gap gaper gaping gas gaseous gaster gasterostome gasterotheca gastraea gastraeum gastral gastralia gastric gastrilegous gastrocoele gastrocoelus gastrodermis gastro-ileal gastrolith gastroorbital Gastropoda gastropods gastropores Gastrotricha gastrotrichs gastrovascular gastrozooid gastrula gastrular gathering Gause's gelatigenous gelatin gelatine gelatinous geminate gemma gemmate gemmation gemmipara gemmipares gemmule gemmulostasin gena genacerore genae genal genaponta genatasinus gene genera generalized generation generative generitype generotype Gene's genesiology genetic genetics genic genicular geniculate genital genitalia genitointestinal genocline genocopy genodeme …

Online Dictionary Of Invertebrate Zoology: N, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

nacre nacreous naiad nail naked nanism nanoid nanitic worker nanometer nanoplankton nanozooid narcosis nasale nascent naso Nassanoff's gland Nassanov's gland Nassanov's gland nasus nasute natal natality rate natant natatory natatory lamellae nates naticid naticiform native natural classification artificial classification natural decrease natural increase natural group natural increase natural requeening supersedure natural selection naupliar eye nauplius eye naupliiform nauplius eye nauplius larva nautilicone nautiliform nautiloid nautiloid navicular neala neallotype neanic neap Nearctic neascus larva nebulous neck neck organ nuchal organ necrobiosis necrocytosis necrophagous necrophoresis necrophoric behavior necrosis necrotize nectar nectobenthic nectocalyx nectophore nectochaeta larva necton nekton nectophore pneumatophore nectopod nectosome nectozooid …

Online Dictionary Of Invertebrate Zoology: H, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

habitat habitude habroderes hackled haem haematodocha haemocoele haemocoelous haemocyte haemolymph haemolysis hae¬mopoietic haemostatic haemoxanthine haft hair haliotoid Haller's halmatometamorphosis halocline halophile halter halteres hamabiosis hamate hamatype hami hamiform hammock hampe hamula hamular hamulohalterae hamulus hamus Hancock's hapaloderes haplobiont haplo-diploidy haploid haplometrosis haplometrotic haploneme haploneural haplont haplophase haplosis haptolachus haptomeri haptomerum haptor Hardy-Weinberg harmonic harmosis harpago harpagones harpes harpoon hastate hastisetae hatching haustellate haustellum haustrulum Hautkorper Hayes' H-band head head-fans heart heautotype hectocotylus heel height heli helical helices helicocone heliophil heliophilic heliophilous heliophobic heliotaxis heliotropism helix helmet helminth helminthiasis helminthic Helminthology helocerous helotism helus hem hemal hemapoiesis hematacyte hematal hematocyte hematodocha …

Online Dictionary Of Invertebrate Zoology: S, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

sabulose sabulous sac saccate saccharobiose sacciform saccule saccus sacoglossa saddle Saefftigen's sagittae sagittocysts saliva salivarium salivary saltation Saltatoria saltatory saltigrade sanguinivorous sanidasters sapphirine saprobe saprobiont saprobiotic saprophagous saprophyte saprozite saprozoic saprozoite sarcobelum sarcode sarcolemma sarcolysis sarcomere sarcomeric sarcophagous sarcoplasm sarcoplasmic sarcosomes sarcostyle sarcotheca sarothrum saxicavous saxicolous scabellum scabrous scalariform scalaroid scalids scalpellum scalpriform scansorial scape scaphe scaphiform scaphium scaphocerite scaphognathite scaphoid Scaphopoda scapula scapus scarabaeiform scarabaeoid scarified scariose scatophagous scavenger scent sceptrules schemochrome schistosomula schizeckenosy schizocele schizochroal schizocoel schizodont schizogamy schizogenesis schizolophe schizopeltid schizopod schizorhyses Schmidt's Schwann scissorial scissure sclerification sclerite scleroblasts sclerocyte sclerophagous sclerosepta sclerotic scoleces scolecid scoleciform scolecoid …

Online Dictionary Of Invertebrate Zoology: T, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

tabula tabular tachyauxesis tachyblastic tachygen tachygenesis tachytelic tactic tactile tactoreceptors taenia taeniate taenidium taenioglossate tagma tagmata tagmosis tail tailfan Takakura's talon talus tandem tangent tangoreceptor tanylobous tapetal tapetum tapinoma-odor Tardigrada tardigrades tarsal tarsation tarsite tarsomere tarsungulus tarsus taste tautonomy tautonym taxa taxes taxis taxis taxodont taxometrics taxon taxonomic taxonomist taxonomy tectiform tectostracum tectum teeth teges tegillum tegmen tegmentum tegula tegular tegulum tegumen tegument tegumentary tela telaform telamon telegonic teleiochrysalis telenchium teleoconch teleodont teleology teleotrocha telepod telescope telescopic teletrophic telioderma teliophan telmophage telocentric telodendria telofemur telogonic telolecithal telomitic telophase telophragma telopod telopodite telorhabdions telosonic telostome telosynapsis telosyndesis telotarsus telotaxis telotroch telson …

Online Dictionary Of Invertebrate Zoology: W X Y Z, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

Wagener's larva waggle dance walking leg pereopod wall warm-blooded homoiothermal warning coloration sematic aposematic pseudaposematic wart verruca tubercle water pore hydropore Waterston's organ water vascular system wax wax gland wax layer wax-plate wax scale web weighting Weismann's ring ring gland wheel organ white body Hensen's gland white cuticle yellow cuticle wholemount whorl width wild type wing ala winter egg summer egg With's organs workers worker jelly xanthic xanthophyll xanthopterin xanthopterine X-chromosomes xenagones xenic axenic polyxenic synxenic trix¬enic xenobiosis xenoecic xenogamy cross-fertilization xenogenesis heterogenesis xenomone allelochemic xenomorphism xenoparasite xerarch succession xeric xerophilous xerophobous xerosere lithosere hydrosere xerothermic fauna xiphidiocercaria microcotylate cer¬caria …

Day 2: Thursday, 18 August 2005: Colorado Native Aquatic Species Restoration Program, Dave Schnoor

Endangered Species Act Congressional Field Tour (August 17-19)

6 pages (includes illustrations).

Contains one reference.

Expression Analysis Of Gnrh Responsive Anterior Pituitary Genes In Lines Of Swine Divergent For Ovulation Rate, Benjamin E. Bass

Department of Animal Science: Dissertations, Theses, and Student Research

The interaction of GnRH with its receptor represents a crucial point for control of reproduction. Additionally, the porcine GnRH receptor (GnRHR) gene is a positional candidate for genes influencing reproductive efficiency, residing in a similar chromosomal region as a QTL for ovulation rate (OR). Gonadotropic gene expression in lines of swine divergent for OR may provide insight into the phenomena of increased litter size. Chinese Meishan (OR=14.5), a white crossbred line selected based on an index of OR and embryonic survival (OR=17.8), and a Control line (OR=13.2) were evaluated. Following three (Index and Control) or six (Meishan) estrous cycles, gilts …

Sheep Updates 2005 - Part 6, Sarah Pugh, Giles Glasson, Ed Barrett-Lennard, Hayley Norman, Matt Wilmot, Meir Altman, Kelly Pearce, Sally Phelan, David Masters, Nadine Eva, Brad Wooldridge, Stephen Gherardi, Lucy Anderton, Gonzalo Mata, P. Sanford, J Young, Tim Wiley, Richard Quinlan, Chris Oldham, Mike Hyder, Mandy Curnow, Samantha Giles, Andrew Thompson

Sheep Updates

This session covers seven papers from different authors:

PASTURES/GRAZING

1. New annual pastures - quality and quantity for fodder conservation?, Sarah Pugh and Giles Glasson, Department of Agriculture Western Australia

2. Saltland Pastures: Dispelling some Myths, Ed Barrett-Lennard^1,3, Hayley Norman^2,3, Matt Wilmat^2,3, Meir Altman,³, Kelly Pearce^2,3, Sally Phelan⁴, David Masters^2,3, ^1. Department of Agriculture, Western Australia, ² CSIRO Livestock Industries, Floreat, WA, ³. CRC for Plant-based Management of Dryland Salinity ⁴. Saltland Pastures Association

3. Pastures: Putting profit back into sandplain, Nadine Eva, Department …

Sheep Updates 2005 - Part 7, S. M. Liu, A. C. Schlink, J. R. Williams, M. E. Dowling, J. C. Greeff, Roy Butler, Keith Croker, L. G. Butler, Rob Davidson, Ken Hart, Doug Harrington, Mario D'Antuono, Julian Gardner, Geoff Duddy, R. G. Woodgate, A. Le Feuvre, A Bailey, R. B. Besier, N. Campbell, I. Carmichael, S. Love, Richard Stovold

Sheep Updates

This session covers eight papers from different authors:

POSTERS

1. Sulpher in wool and its implications for fleece weight and sheep health, SM Liu, AC Schlink, JR Williams, CSIRO Livestock Industries Wembley WA, ME Dowling,JCGreef, Department of Agriculture Western Australia.

2. Stubbles for sheep: a reality check, Roy Butler, Keith Croker, Department of Agriculture Western Australia.

3. Genetic benchmarking using artificial insemination, LC Butler, JC Greeff, Department of Agriculture Western Australia.

4. The potential lambing performances of ewes in mixed age flocks, Kieth Croker, Department of Agriculture Western Australia, Rob Davidson, WAMMCO International, formally University of Western Australia, Ken Hart, …

Sheep Updates 2005 - Part 1, R. W. Kelly, R. Kingwell, A. R. Bray, Chris Oldham, Graeme Martin, D. Blanche, D. Ferguson, Keith Crocker, Di Evans

Sheep Updates

This session covers seven papers from different authors: Boosting lambing percentages of WA sheep flocks. R.W. Kelly CSIRO Livestock Industries, Floreat WA , R. Kingwell Department of Agriculture WA,

Kiwis can fly - 30% higher lambing in 15 years, AR Bray, Meat and Wool New Zealand, Wellington, New Zealand

Rams are not a trivial expense, so what can you do to maximise on your investment? Chri Oldham, Department of Agriculture Western Australia, Graeme Martin, University of West Australia.

Care for mun - fetal programming, lamb survival and lifetime performance. RW Kelly CSIRO Livestock Industries, Floreat WA

Boost lamb survival - …

Sheep Updates 2005 - Part 4, Lucy Anderton, John Young, Rob Davidson, Keith Croker, Ken Hart, Tim Wiese, B. M. Thomson, I Williams, J. R. Briegel, J. C. Greeff, N. R. Adams, E. N. Bermingham, Sue Hatcher, Gordon Refshauge, Emma Kopke, Ross Kingwell, K. E. Kemper, M. L. Hebart, F. D. Brien, K. S. Jaensch, R. J. Grimson, D. H. Smith, Melanie Dowling, A. (Tony) Schlink, John Karlsson

Sheep Updates

This session covers twelve papers from different authors:

REPRODUCTION

1. Is it worth increasing investment to increase lambing percentages? Lucy Anderton Department of Agriculture Western Australia.

2. What value is a lamb? John Young, Farming Systems Analysis Service, Kojonup, WA

3. Providing twin-bearing ewes with extra energy at lambing produces heavier lambs at marking. Rob Davidson WAMMCO International,, formerly University of Western Australia; Keith Croker, Ken Hart, Department of Agriculture Western Australia, Tim Wiese, "Chuckem", Highbury, Western Australia.

GENETICS

4. Underlying biological cause of trade-off between meat and wool. Part 1. Wool and muscle glycogen, BM Thomson, I Williams, University …

Sheep Updates 2005 - Part 2, Peter Tozer, Janette Drew, K. E. Kemper, M. L. Hebart, F. D. Brien, K. S. Jaensch, R. J. Grimson, D. H. Smith, A. M. M. Ramsay, J. S. Richards, K. D. Atkins, T. Thompson, W. K. Murray, J. R. L. Hall, Chris Carter, Peter Tozer, Mark Hyder, John Young, B. A. Mcgregor, Patricia Harper

Sheep Updates

This session covers seven papers from different authors: CONCURRENT SESSIONS - STRATEGIC MANAGEMENT 1.Finishing Pastoral Lambs, Peter Tozer, Patricia Harper, Janette Drew, Department of Agriculture Western Australia 2. Coating Improves Wool Quality under Mixed Farming Conditions, KE Kemper, ML Hebart, FD Brien, KS Grimson, DH Smith AMM Ramsay, South Australian Research and Development Institute 3. J. S. Richards, K.D. Atkins, T. Thompson, W. K. Murray, Australian Sheep Industry Co-operative Research Centre and NSW Department of Primary Industries, Orange Agricultural Institute, Forest Rd. Orange 4. Strategic Risk Management in the Sheep Industry, J.R.L. Hall, ICON Agriculture (JRL Hall & Co) 5. …

Sheep Updates 2005 - Part 5, Geoff Duddy, Brent Mcloud, John Sullivan, T. J. Mahar, A. Balasingam, J. H. Stanton, K. M. S. Curtis, P. R. Lamb, Eliza Dowling, Ned Crossley, Surrender Mann, Lucy Anderton, Matthew Kelly, Andrew Swan, Ian Mcfarland, Di Evans, K. Bell, D. Sackett, Robin Jacob

Sheep Updates

This session covers eleven papers from different authors; MARKET INFORMATION 1. Crystal Spring - Crystal clear and consistant, Geoff Duddy, Livestock Officer (Sheep & Wool) Yanco, NSW, Brent McLoud, (Product Development Officer) Cowra, NSW, John Sullivan, J.J Dresser and Co (Agent), Woodstock, NSW 2. An overview of Recent Developments in Dark and Medullated Fibre Testing, T.J. Mahar, A. Balasingam, AWTA Ltd 3. Opportunities and Implications for Wool Producers of the TEAM3 Prediction Equations, J.H. Stanton12 K.M.S. Curtis1 , 1Department of Agriculture Western Australia, 2 Curtin University, WA 4. Premiums and Discounts for Fibre Properties in Superfine Wool, Now and in …

Sheep Updates 2005 - Part 3, Rob Davidson, David Pethick, C. F. Engelke, B. D. Siebert, K. Gregg, A-D G. Wright, P. E. Vercoe, Robin Jacob, Russell Barnett, Joanne Sneddon, Sandra Brown, G. Rose, C. Kabore, J Dart, Stuart Adams

Sheep Updates

This session covers seven papers from different authors: CUSTOMER 1. Benefits VIAscanR to producers and WAMMCO, Rob Davidson, Supply Development Manager, David Pethick, School of Veterinary and Biomedical Studies, Murdock University. 2. Healthy fats in lamb: how WA lambs compare with others, C. F. Engelke Animal Biology, University of Western Australia, bCSIRO Livestock Industries, Western Australia B.D. Siebert, Department of Animal Science, University of Adelaide, South Australia, K. Gregg, Centre for High-Throughput Agricultural Genetic Analysis, Murdoch University, Western Australia. A-D.G. Wright CSIRO Livestock Industries, Western Australia, P.E Vercoe Animal Biology, University of Western Australia 3. Shelf life of fresh lamb …

Fertility Of Yearling Beef Bulls During Mating, R. W. Ellis, Gary P. Rupp, P. J. Chenoweth, L. V. Cundiff, D. D. Lunstra

Department of Animal Science: Faculty Publications

Crossbred (Bos taurus) yearling beef bulls were assessed for breeding soundness and physical traits prior to multi-sire natural mating at pasture. Bulls (n = 60) were assigned to six groups of nine or 10 bulls and two bull-groups were rotated on 14-day intervals during a 63-day mating season in each breeding herd (n = 3) of 191–196 cows. The remaining bulls (n = 14) were maintained under similar environmental conditions without mating exposure. Bulls were observed during mating and assessed for breeding soundness and changes following mating. Bulls used for breeding (UFB) lost 77 kg …

Animal Science Alumni Newsletter, Summer 2005

Department of Animal Science: Departmental News

Contents:

Beef Teaching Herds have Interesting History
From the Department Head’s Desk
Beef Cattle Merchandising Class & Sale
Alum Receives Checkoff’s Distinguished Service Award
Bulls Worth Waiting For
University of Nebraska Represented at National Convention and Trade Show
Greg Ibach Fulfilling His Goal In Serving Agriculture
Department of Agriculture Hires Alum as New State Veterinarian
Serendipitous Couple — Fifth Generation of Farmers
Bud Britton Golf Classic
Block and Bridle Honoree of the Year
Officers and Advisors for 2005-2006
Block & Bridle Awards
Recent Department Awards and Recognitions
Brett White and Merlyn Nielsen Receive Holling Family Teaching Awards
Dedication of Terry …

2004 Annual Report, Various Authors

Annual Reports

No abstract provided.

Deer-Vehicle Crash Patterns Across Ecoregions In Michigan, Krishnan Sudharsan, Shawn J. Riley, Brent A. Rudolph, Brian A. Maurer

Wildlife Damage Management Conference

Deer-vehicle collisions (DVCs) impact the economic and social well being of humans. We examined large-scale patterns behind DVCs across 3 ecoregions: Southern Lower Peninsula (SLP), Northern Lower Peninsula (NLP), and Upper Peninsula (UP) in Michigan. A 3 component conceptual model of DVCs with drivers, deer, and a landscape was the framework of analysis. The conceptual model was parameterized into a parsimonious mathematical model. The dependent variable was DVCs by county by ecoregion and the independent variables were percent forest cover, percent crop cover, mean annual vehicle miles traveled (VMT), and mean deer density index (DDI) by county. A discriminant function …

Estimating Drc-1339 Mortality Using Bioenergetics: A Case Study Of European Starlings, H. Jeffery Homan, Randal S. Stahl, John J. Johnston, George M. Linz

Wildlife Damage Management Conference

We developed a bioenergetics model for European starlings (Sturnus vulgaris) that estimated mortality from baitings with CU Bird Carrier pellets treated with 1% DRC-1339 Concentrate and diluted 5:1 (untreated:treated pellets). A bioenergetic analysis of heat and radiative energy exchanges between the starling body surface and surrounding environment was converted to daily caloric demand based on a steady-state energy balance. The amount of Bird Carrier eaten per starling was governed by subroutines in the model that used probability distributions to simulate variability in dietary intake at the bait site. Mortality was estimated through dose-response regression analysis. Compared to onsite …

Hunters----Can They Do The Job?, Paul D. Curtis, David Drake, Jody Enck, Gary J. San Julian, David Taylor

Wildlife Damage Management Conference

Management of white-tailed deer (Odocoileus virginianus) herds at the landscape scale is increasingly difficult. The future of eastern hardwood forests is threatened by inadequate regeneration of valuable timber species, due in large measure to deer browsing. In the northeast, deer damage to crops, landscaping, and vehicles costs more than 640 million dollars annually. Nationally, hunter ranks are decreasing. In the east, white-tailed deer numbers are increasing; state wildlife agencies have expanded season lengths, and increased deer bag limits. While venison is still a highly prized meat, the average hunting family wants to use about 2 deer per year. …

Effectiveness Of Milorganite® As A Repellent To Protect Ornamental And Agronomic Plants From Deer Over-Browsing, Odin L. Stephens, Michael T. Mengak, George R. Gallagher, David A. Osborn, Karl V. Miller

Wildlife Damage Management Conference

When deer populations become locally overabundant, browsing of ornamental and agronomic plants negatively affects plant establishment, survival, and productivity. Milorganite® is a slow-release, organic fertilizer produced from human sewage. We tested Milorganite® as a deer repellent on chrysanthemums (Chrysanthemums morifolium) in an urban/suburban environment, and soybeans (Gycine max) in a rural agriculture environment. Six beds of chrysanthemums at two sites were monitored for 28 to 35 days. Treatment plants received a top dressing of 104 grams of Milorganite® (1120.9 kg/ha). Milorganite® treated plants had more (P < 0.001) terminal buds and achieved greater height (P < 0.002) compared to controls at one site, however damage observed was similar at the second site. In a second experiment, 0.2-ha plots of soybeans (Glycine max) were planted on five rural properties in …

Conditioning Beaver To Avoid Desirable Plants, Julie L. Harper, Dale L. Nolte, Thomas J. Deliberto, David L. Bergman

Wildlife Damage Management Conference

Conditioned food aversion can be used to train animals to avoid select foods. Generally, aversive conditioning is best applied when animals first encounter a food item. However, almost by definition damage is inflicted to desirable plants very familiar to the culprit. We assessed the potential for training beaver to avoid a known preferred food. During a 5 day day treatment period beavers were offered only corn at 1600 hours. Six hours later, animals that had ingested corn were injected with 150 mg/kg lithium chloride (LiCl), with a control group receiving sodium chloride (NaCl). Alternate foods were then offered with corn …

Development Of Diazacon™ As An Avian Contraceptive, Christi A. Yoder, Kimberly S. Bynum, Lowell A. Miller

Wildlife Damage Management Conference

Due to increasing human-wildlife conflicts with birds and growing opposition to lethal techniques, nonlethal methods need to be developed to help manage bird populations. DiazaCon™ is a promising oral contraceptive that acts by directly inhibiting the conversion of desmosterol to cholesterol. Because cholesterol is essential for the production of the steroid reproductive hormones testosterone, progesterone, and estradiol, DiazaCon™ also indirectly inhibits the formation of these hormones. These hormones are essential for sperm and egg production, and the production of egg yolk precursors in the liver. Because DiazaCon™ is cleared slowly from the liver, its contraceptive effects are long-lasting. Initial research …

Investigation Of The Toxic Affect Of Manganese On Ruminal Microbial Digestion And Growth, Erin Dearing

Undergraduate Honors Capstone Projects

This research investigated the toxic effect of manganese, in a reduced chemical state, on rumen microbial metabolism and growth. The reduced form of manganese is the soluble state found in subsurface waters and has a high red-ox potential. In the study, we investigated the effects of reduced manganese at varying concentrations, on rumen microbial ability to replicate and metabolize carbohydrates. The hypotheses that we tested were as follows: (1) reduced manganese decreases the rate of pH drop associated with rumen culture fermentation of a com based diet and (2) reduced manganese decreases the bacterial growth in rumen culture, as measured …

Seasonal Changes In Composition Of Lipid Stores In Migratory Birds: Causes And Consequences, Barbara J. Pierce, Scott R. Mcwilliams

Biology Faculty Publications

It is well established that birds use fat stores to primarily fuel migration; however, few studies have focused on the causes and consequences of observed seasonal changes in fatty acid composition of fat stores in birds. We propose and test two hypotheses that address the causes of these seasonal changes in composition of fat stores: (1) diet composition determines fatty acid composition of fat stores, and (2) birds selectively metabolize and store certain fatty acids during migration in lieu of changing their diet. When we offered Red-eyed Vireos (Vireo olivaceous) choices between diets that differed only in fatty acid composition, …

Influence Of Breed, Heterozygosity, And Disease Incidence On Estimates Of Variance Components Of Respiratory Disease In Preweaned Beef Calves, G. D. Snowder, L. Dale Van Vleck, L. V. Cundiff, G. L. Bennett

Department of Animal Science: Faculty Publications

The objective of this study was to characterize genetic and environmental factors influencing bovine respiratory disease (BRD) in beef cattle. Records from nine purebred and three composite breeds and a variety of F1 and three-way crosses, including the progeny of 12 additional different sire breeds produced over a 20-yr period (1983 to 2002), were evaluated for breed and heterozygosity effects on the observed incidence of BRD. Heterozygosity fractions for calves and dams were defined by generalized breed origins: British, Continental, and tropically adapted. Variance components were estimated for each pure and composite breed, and across all breeds and crossbreeds. The …