Digital Commons Network^™

Modelling The Digestibility Decrease Of Three Grass Species During Spring Growth According To The Age Of The Grass, The Thermal Age And The Yield, M. E. Salamanca, R. Lambert, M. Gomez, A. Peeters

IGC Proceedings (1977-2023)

The nutritive value of forage changes during growth. For the protein content, a general evolution curve was found with the yield increase (Salette & Lemaire, 1984). The digestibility of the organic matter decreases during growth as cellulose and lignin content increase. Regrowth age is the main factor, which explains the digestibility decrease (Demarquilly & Jarrige, 1981). The crop age can be expressed in number of growth days but also in thermal age (cumulated temperature). We compared the digestibility change of three grass species during spring growth for two years as a function of yield increase, thermal age or number of …

Visual Modelling Of Alfalfa Growth And Persistence Under Grazing, S. R. Smith Jr., L. Muendermann, A. Singh

IGC Proceedings (1977-2023)

A ‘virtual’ alfalfa plant model was developed at the University of Manitoba in Canada as part of a comprehensive grazing research project. This model shows an alfalfa plant ‘growing’ on a computer screen and the plant’s response to grazing (similar to time-lapse photography). The original model was constructed by Singh (2005) to show the research potential of visually modelling alfalfa plant growth. The ability to visually ‘grow’ a plant on a computer screen also offers tremendous opportunities for teaching and extension. Detailed morphological measurements were used in the construction of Singh’s model, based on single plants subjected to the following …

A New Agro-Meteorological Simulation Model For Predicting Daily Grass Growth Rates Across Ireland, R. P. O. Schulte

IGC Proceedings (1977-2023)

Grass growth rates and herbage yields depend on weather conditions, soil characteristics and grassland management and differ from year to year and from site to site. In the past, grass growth has been predicted using both mechanistic and statistical models. The accuracy of mechanistic models is commonly insufficient for practical application, while statistical models generally apply to one test site only (e.g. Han et al., 2003). In this paper a semi-empirical grass growth model is presented which is numerically accurate, but which can be applied to contrasting sites across Ireland at the same time.

A Farmer-Based Decision Support System For Managing Pasture Quality On Hill Country, I. M. Brookes, D. I. Gray

IGC Proceedings (1977-2023)

Despite considerable effort to promote formal feed budgeting in New Zealand, survey data suggests it is only adopted by 20% of farmers (Nuthall & Bishop-Hurley, 1999). Recent work (Gray et al., 2003) has identified that farmers may use a different approach - micro-budgeting - to manage feed. Rather than operate at a whole farm level, micro-budgeting focuses at the paddock level. This paper describes micro-budgeting as used by a high performing hill country sheep and cattle farmer to manage pasture quality over spring and a decision support model developed to help other farmers undertake this process

Pâtur’In: A User-Friendly Software Tool To Assist Dairy Cow Grazing Management, L. Delaby, J. L. Peyraud, P. Faverdin

IGC Proceedings (1977-2023)

The feeding of dairy cows at pasture presents many technical, economic and environmental advantages, while benefiting from a very favourable image. However, the management of grazed land is a complex game of strategy in which the farmer applies decisions in order to manage two unstable and uncertain fluxes of change: growth of grass and intake of the herd. Many tools (platemeter, etc.) and overall methods (local stocking rate references, farm cover, etc.) have been developed as aids to grazing management. Nevertheless, few decision-support systems are currently available that make it possible to anticipate and assess the consequences of a given …

Understanding Livestock Grazing Impacts: A Decision Support Tool To Develop Goal-Oriented Grazing Management Strategies, S. J. Barry, K. Guenther, G. Hayes, R. Larson, G. Nader, M. Doran

IGC Proceedings (1977-2023)

Managing grasslands in the western United States has become much more complex over the last few decades. A century ago the goal was to survive as a livestock producer, and grassland management involved using forage effectively and overcoming obstacles such as predators and shortages of water and feed. Today the successful grassland manager also needs to consider the diversity and health of the ecosystem as a whole. Livestock grazing can negatively and/or positively affect riparian areas, sensitive plants, and endangered wildlife. Since the impact on a specific factor will vary depending on the timing, intensity and class of livestock grazed, …

Enhancing Grasslands Education With Decision Support Tools, H. G. Daily, J. M. Scott, J. M. Reid

IGC Proceedings (1977-2023)

We have successfully used Decision Support Tools (DST) relevant to the management of grazing enterprises to enhance problem solving skills of undergraduates in Australia. Tools such as GrassGro™ (Moore et al., 1997) and GrazFeed™ (Freer et al., 1997) are accessed from a central server by authorised users at many widely dispersed Universities across Australia using remote access to thin-client technology via an Internet portal. This has been supplemented with training for lecturers. Experience in developing appropriate teaching and learning materials and the reliable delivery of simulation software to many clients has enhanced learning outcomes at tertiary level. We …

Impact Of Eating Disorder Recovery On Communication Of Identity Through Food, Rosemary F. Jeter

UM Graduate Student Research Conference (GradCon)

Despite remaining stigmatized and regarded as taboo, eating disorders (EDs) affect millions of people around the world. They are also one of the deadliest mental health disorders, with over thousands of suicides every year being tied to EDs. Recovery from eating disorders is possible; however, there is an ongoing debate about what successful or complete recovery looks like. Most extant research about eating disorder recovery (EDR) is through clinical and biomedical perspectives. However, our understanding of how EDR impacts an individual’s identity is still lacking.

When an individual experiences an illness or mental health disorder, such as an ED, they …

Parasitic Infection In A Social Carnivore: T. Gondii Exposure Increases Risky Decision Making In Gray Wolves, Connor J. Meyer, Kira A. Cassidy, Erin Stahler, Ellen Brandell, Colby B. Anton, Daniel Stahler, Douglas W. Smith

UM Graduate Student Research Conference (GradCon)

Toxoplasma gondii is a protozoan parasite capable of infecting any warm-blooded species yet, requires a feline definitive host to sexually reproduce. Experimental studies indicate that T. gondii infection increases an individual’s risky decision-making but, due to the intensive data collection and large samples sizes necessary, T. gondii’s role in ecosystem processes is understudied.

We sought to understand the role in which T. gondii exposure affects gray wolf decision-making in Yellowstone National Park. To achieve this, we used 25 years of wolf serological and behavioral data to build generalized linear mixed models (GLMMs) to test for a change in behavior of …

Finding Aid For The Andrew Baron Stewart Autograph Album (Mum00619)

Archives & Special Collections: Finding Aids (alphabetical)

Collection contains the transcription of the autograph album belonging to Andrew Baron Stewart, University of Mississippi class of 1861.

Finding Aid For The J. Watson Henderson Collection (Mum01713)

Archives & Special Collections: Finding Aids (alphabetical)

Collection of letters written home to Mississippi during the Civil War by J. Watson Henderson.

Finding Aid For The Dr. T.H. Rayburn Collection (Mum00382)

Archives & Special Collections: Finding Aids (alphabetical)

Collection contains artwork, photographs, and correspondence related to the Civil War created during the mid 19th century.

Finding Aid For The William Alexander Percy Small Manuscripts (Mum00361)

Archives & Special Collections: Finding Aids (alphabetical)

Collection contains correspondence, sheet music and a screenplay related to the life and work of William Alexander Percy. Items were created 1922.

Finding Aid For The Elvis Presley Small Manuscripts (Mum00371)

Archives & Special Collections: Finding Aids (alphabetical)

Collection of letters written home to Mississippi during the Civil War by J. Watson Henderson.

Finding Aid For The Larry Brown Collection (Mum00051)

Archives & Special Collections: Finding Aids (alphabetical)

No abstract provided.

Finding Aid For The Book Of Gold Collection (Mum00039)

Archives & Special Collections: Finding Aids (alphabetical)

No abstract provided.

Finding Aid For The Charles G. Bell Collection (Mum00030)

Archives & Special Collections: Finding Aids (alphabetical)

The collection chiefly contains slides depicting works of art. The slides were collected by Bell as part of his Symbolic History research.

All Young People Of Scotland Will Flourish Under Curriculum For Excellence: Mainstream Primary Teacher Perception Of Additional Support Need Resources In Curriculum For Excellence, Fraser Mcguinness

The Journal of Advancing Education Practice

An increase in the number of pupils with Additional Support Needs (ASN) in Scottish mainstream schools has brought with it a wide variation of learners’ educational needs and corresponding support. Despite this, there is anecdotal evidence sufficient support has not been supplied effectively to meet these needs.

Given repeated policy statements by the Scottish Executive (2004) and Scottish Government (2009; 2016) that Curriculum for Excellence (CfE) will “enable all of the young people of Scotland to flourish as individuals”, one may call into question whether CfE is indeed a curriculum that can facilitate such promise. The purpose of this research …

Interpersonal Protective Factors Of Suicide Ideation And Attempt Among Adolescents, Lillian Martz, Emily Sallee, Abraham Cazares-Cervantes

UM Graduate Student Research Conference (GradCon)

The purpose of this research study is to contribute positively to the literature and research related to the growing epidemic of suicidality among adolescents in the United States. More than one in three high school students report experiencing persistent feelings of sadness and hopelessness and one in six youth report making a suicide plan in the past year. Nearly 22% of Montana teens seriously considered suicide in the past year with a full 10.2% of teens making a suicide attempt. The researchers are interested in applying the Interpersonal Theory of Suicide (IPTS) to the adolescent population. ITPS posits that the …

The Experiences Of Georgia Special Education Teachers During The Pandemic, Karin Fisher, Edie Grice, Adia Greer, Laura Echezabal

Empowering Educators Conference

In 2020, COVID-19 wreaked havoc on Georgia’s educational systems. Schools closed, and many continued providing education through virtual platforms. It is well-known that students with disabilities struggled during the pandemic; however, their teachers' experiences are unexplored. As a result, we conducted a mixed-methods study to document their experiences.

Beaver Dam Analogs Change Macroinvertebrate Communities In Headwater Streams, Western Montana, Michelle E. Fillion

UM Graduate Student Research Conference (GradCon)

Starting in the 17^th century, beavers were nearly eradicated from their historic range. Though today their populations are improving, the lack of beaver dams in aquatic systems has left a lasting impact on the environment. As a result, managers of freshwater systems have turned to beaver dam analogs (BDAs) as one technique for stream restoration. BDAs are human constructed structures designed to mimic natural beaver dams and their geomorphic, hydrologic, and ecological effects. Though BDAs have proven to be a useful restoration technique, there has been little research on how they influence macroinvertebrate communities, which serve as a vital …

Seeding Resilience: An Examination Of The Impacts Of A Seed Saving Network In Western Montana, Christina Leas

UM Graduate Student Research Conference (GradCon)

Informal seed saving continues even in the context of an increasingly industrialized and globalized agricultural system. While some scholarship has focused on informal seed saving practices that continue to thrive in the global South, few studies have examined the dynamics of these practices in the global North, particularly in the American West. This thesis utilizes a resilience framework to assess a seed saving network and its impacts in western Montana, specifically the Bitterroot and Missoula Valleys. Two questions guide the inquiry: 1) How do significant actors connect within the seed saving network of the Missoula and Bitterroot Valleys, and 2) …

Unlocking Montana: A Solution To Corner-Locked Public Land, Sawyer J. Connelly

UM Graduate Student Research Conference (GradCon)

Across the American West, 9.52 million acres of federal and state public lands are inaccessible to the public. The legality of accessing much of those public lands through corner-crossing is unclear in the law because, in the infinitesimal space where four corners of land meet in a checkerboard pattern, there is ambiguity; neither private landowners nor the public can assert an exclusive right or absolute control without infringing upon the rights of the other. This paper discusses the origins of landlocked public land, common law doctrines that inform legal actors in this space, and analyzes federal statute and state legislative …

Folder 01: Letters To Dirk Van Raalte [Transcription, Translation], 1859, 1861-1862, 1874, Van Raalte Collection

Box 10 Family-Corr (COLL300)

No abstract provided.

Folder 24: Letters To His Wife [Photocopy, Transcription, Translation], 1837, Van Raalte Collection

Box 09 - Family-Corr (COLL300)

No abstract provided.

Folder 09: Letter To Helenius De Cock, 'S Hertogenbosch [Photocopy, Translation], 1851, Van Raalte Collection

Box 09 - Gen-Corr (COLL300)

No abstract provided.

Folder 05: Letters To Mr. John Ball, 1847-1850, And Ball Biography [Photocopy], 1891, Van Raalte Collection

Box 09 - Gen-Corr (COLL300)

No abstract provided.

Folder 03: Letters To H. J. Budding [Photocopy, Translation], 1839, Van Raalte Collection

Box 09 - Gen-Corr (COLL300)

No abstract provided.

A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder

IGC Proceedings (1977-2023)

The Western Australian (WA) environment is Mediterranean with annual legume/grass pastures and a 6 month growing season. In autumn where over grazing can impact pasture establishment and in spring, prior to senescence, when under grazing can mean significant losses of efficiency are crucial times for grazing management. Pasture utilisation is typically low (25-35%) due to conservative stocking regimes; key to increasing productivity is increasing pasture utilisation (Grimm, 1998). Increased levels of productivity require farmer sophistication in the way they feed budget. To this end, satellite technology is being used to provide farmers in southern Australia with weekly estimates of pasture …

Simulation Of Pasture Phase Options For Mixed Livestock And Cropping Enterprises, L. Salmon, A. D. Moore, J. F. Angus

IGC Proceedings (1977-2023)

In southern Australia, 50% of grain-producing farms also run beef and/or sheep enterprises. Legume pasture leys are used to replace soil nitrogen and manage crop disease risks. Deep-rooted perennials, predominantly lucerne (Medicago sativa), are replacing annual Trifolium subterraneum-based leys to increase pasture production. They also have the environmental benefits of limiting soil acidity, rising water tables and dryland salinity. After recent droughts depletion of soil water by lucerne has penalised wheat yields. Decision support tools can help farmers evaluate the long-term effects of grazed annual and perennial leys on animal and crop production at the whole farm …