Life Sciences Commons^™

Rumen Degradable Protein Requirements Of Gestating Beef Cows Grazing Dormant Native Sandhills Range, Karla Hollingsworth-Jenkins, Terry J. Klopfenstein, Don C. Adams, Jim Lamb

Nebraska Beef Cattle Reports

Protein, the most expensive winter supplement, may be overfed because the actual rumen degradable and escape protein requirements are unknown. Rumen degradable protein is protein degraded by the rumen microorganisms and used by them for their growth and protein synthesis. Escape protein is protein which is not degraded in the rumen but enzymatically digested in the small intestine for use by the animal at the tissue level. Metabolizable protein is the combination of digestible microbial protein and escape protein that flows to the small intestine for use by the host animal. Previous Nebraska reports (Karges et al.. 1991 Beef Cattle …

Digestibility Of Wet And Dry Distillers Grains From The Fermentation Of Corn Or Sorghum, Shanna Lodge, Rick Stock, Terry J. Klopfenstein, Dan Herold

Nebraska Beef Cattle Reports

Research conducted at the University of Nebraska has evaluated wet and dry distillers byproducts as energy sources for cattle. The majority of the research has been conducted with distillers byproducts resulting from the fermentation of corn. However, in the dry milling industry various cereal grains may be used to produce ethanol and distillers byproducts. The resulting byproducts have the potential to have a different feeding value when compared to byproducts produced from corn. A Nebraska trial (1995 Nebraska Beef Report, pp. 25-26) conducted by Lodge et al. indicated steers consuming diets containing distillers byproducts (40% of diet DM) produced from …

Use Of Direct Fed Microbials To Alleviate Subacute Acidosis, Shanna Lodge, Terry J. Klopfenstein, Rick Stock, Dan Herold

Nebraska Beef Cattle Reports

Direct fed rnicrobials are feed additives composed of live cultures of microorganisms that are currently being used in the feedlot industry to improve animal performance. Reported beneficial effects include increased feed intake and weight gain. The efficacy of these supplements have been associated with their abilities to alter rumen function, such as volatile fatty acid production, stabilization of pH, and reduction of the amount of lactate produced. This experiment was conducted to determine the effect of the direct fed microbials on rumen steady state and to evaluate their ability to alleviate subacute acidosis.

Evaluation Of Wet Distillers Byproducts Composite For Finishing Ruminants, Shanna Lodge, Rick Stock, Terry J. Klopfenstein, Drew Shain, Daniel Herold

Nebraska Beef Cattle Reports

Demand for ethanol and coin sweeteners is on the rise and is predicted to increase in the future. This trend will result in an abundance of byproducts that are potentially economical alternatives to corn. Wet distillers grains and wet corn gluten feed are currently used as sources of protein and energy in feedlot diets. Previous research indicates that wet corn byproducts (distillers grains and thin stillage) are higher in net energy than corn grain; however, wet corn gluten feed (WCGF) is similar in net energy to corn. Potential differences between wet distillers byproducts and WCGF include lipid content, escape protein …

Winter Calf Grazing And Field Windbreaks, Cynthia Morris, Terry J. Klopfenstein, James R. Brandle, Rick Stock, Drew Shain, Mark Klemesrud

Nebraska Beef Cattle Reports

Windbreaks have been recommended as shelter for wildlife, minimizing erosion, trapping of snow. and protection for livestock and humans. Windbreaks have been shown to benefit crop production by increasing grain yield. Protection from windbreaks extends 10 to 12 times the height of the windbreak on the leeward side and three to five times on the windward side. Windbreak benefits depend on the height, density, number of rows, species, length, orientation, and maturity of the windbreak.

In Nebraska, the grazing of crop residues in the winter provides an inexpensive source of feed for growing calves. However, cold and wet winter conditions …

Implant And Slaughter Time For Finishing Cattle, Drew Shain, Terry J. Klopfenstein, Rick Stock, Mark Klemesrud

Nebraska Beef Cattle Reports

The use of growth promoting implants with finishing cattle is common feedlot practice to increase weight gain. However, the payout of hormone from the implants decreases with time. As the concentration of hormone(s) in the blood decreases, it is not completely clear how the growth response of the cattle is affected. Trenbolone acetate (TBA, a synthetic product of the male hormone testosterone) combined with estrogen may increase mature body size by increasing lean tissue growth. However. there is limited information available to determine if TBA/estrogen continues to stimulate weight gain throughout a four-month feeding period. Therefore. the objective of this …

Grazing Systems Utilizing Forage Combinations, Drew Shain, Terry J. Klopfenstein, Rick Stock, Mark Klemesrud

Nebraska Beef Cattle Reports

Grazing bromegrass throughout the summer provides weight gains of up to two pounds a day during early and late summer. However, during July and August bromegrass growth and quality is low and weight gains of cattle grazing bromegrass are reduced. Grazing combinations of warm and cool season forages allows for optimizing forage quality by rotating to warm season grasses during July and August. Another alternative may be to interseed red clover in bromegrass to optimize forage quality. Inter-seeding red clover would provide a higher quality forage when bromegrass growth and quality is low and, in addition, provide a source of …

The Incidence Of Precocious Puberty In Developing Beef Heifers, Michael Wehrman, James E. Kinder

Nebraska Beef Cattle Reports

In the current cow-calf production system in the United States when restricted breeding seasons are used a heifer must calve by two years of age to obtain maximum lifetime productivity. Heifers that reach puberty at a younger age and have ≥3 estrous cycles have a greater chance of conceiving early in their first breeding season than contemporaries. Due to the longer postpartum period of an estrus of first-calf cows calving at two years age, heifers that conceive early in the breeding season have a greater opportunity to initiate estrous cycles before the next breeding season and become pregnant. In contrast, …

Predicting Wholesale Value Of Beef Carcasses, Lee Weide, Chris R. Calkins, Tommy Wheeler, Brian Quandt

Nebraska Beef Cattle Reports

The growing interest in value-based marketing elevates the importance of accurate assessment of individual carcass merit. Retailers, meat plants, and producers must find a way to reduce the production and marketing of fat. Instant feedback to producers, in the way of a higher dollar value for preferred cattle, gives a clear signal on what type of beef is desirable. Electromagnetic scanning (EMS) has the capability to accurately provide an assessment of lean content on a single carcass basis.

Previous research at the University of Nebraska has shown that EMS has the ability to predict lean composition of beef carcasses (1994 …

First Arkansas Records For Bigscale Logperch Percina Macrolepida Stevenson (Pisces: Percidae), With Comments On Habitat Preference And Distinctive Characters, Thomas M. Buchanan, Chad Hargrave, Drew Wilson, L. G. Claybrook, Philip W. Penny Jr.

Journal of the Arkansas Academy of Science

Fish samples were collected with seines and rotenone from 21 localities representing five major habitat types along the Red River in Arkansas. The bigscale logperch, Percina macrolepida, was found at 11 of those sites, providing the first records ofthat species from the state. The primary preferred habitat parameters for bigscale logperch are no current, a sand and/or silt substrate, and a water depth of 1.0-2.0 m. Percina macrolepida is morphologically very similar to the widespread and common logperch, P. caprodes, but can be distinguished from all forms of that species in Arkansas by a combination of characters. Snout shape and …

Application Of A Modified Ziehl-Neelsen's Carbol-Fuchsin Stain For Observing Nuclei In Vegetative Hyphae Of The Puffball Species Lycoperdon Pyriforme, Martin J. Huss

Journal of the Arkansas Academy of Science

Nuclei of vegetative hyphae of the puffball species Lycoperdon pyriforme are small and difficult to stain. A simple mitotic staining technique utilizing a modified version of Ziehl-Neelsen's carbol-fuchsin stain, originally developed for examining bacteria and small chromosomes of plants, has proven useful for observing fungal nuclei in this gasteromycete species. Cells of vegetative hyphae were pre-treated for 2 hours with an aqueous solution saturated with naphthalene, fixed in a 3:1 mixture of 100% ethanol and glacial acetic acid, and hydrolyzed for 10 minutes in a 1:1 mixture of 100% ethanol and 12 M hydrochloric acid. Cells were rinsed with distilled …

Biogeography Of Arkansas Mammals With Notes On Species Of Questionable Status, Gary A. Heidt, Douglas A. Elrod, V. Rick Mcdaniel

Journal of the Arkansas Academy of Science

Seventy-one native or re-introduced species of mammals were analyzed with respect to their geographical distributions and relationships to the four broad physiographical regions of Arkansas. Mammalian diversity in the Ozark Mountains, Ouachita Mountains/ Arkansas River Valley, Gulf Coastal Plain, and Mississippi Alluvial Plain/Crowley's Ridge was not area dependent. The majority of mammalian species (44) occurs statewide with the greatest diversity in the interior highland regions. The Ozark Mountains contain the most species endemic to an area. Thirteen species which are of questionable status in Arkansas are discussed. The presence of the plains pocket gopher (Geomys bursarius), a second species of …

Dietary Diversity And Overlap Between Two Subspecies Of Spadefoot Toads (Scaphiopus Holbrookii Holbrookii And S. H. Hurterii) In Arkansas, David H. Jamieson, Stanley E. Trauth

Journal of the Arkansas Academy of Science

The food habits of adult spadefoot toads (Scaphiopus h. holbrookii and S. h. hurterii) collected in Arkansas were exam ined during this study. Thirty-six adult S. h. holbrookii (29 males and 7 females) and 48 adult S. h. hurterii (23 males and 2 females) were necropsied. Most specimens were collected over a 10-year span oftime (1985-94). Alltoads were taken from breeding aggregations which were visited periodically inany given year (frommid-February to late April).Prey items wer found in the stomachs of 13 (36.1%) of the S. h. holbrookii and 23 (48.0%) ofthe S. h. hurterii. Scaphiopus h. holbrookii and h. hurterii …

New Distributional Records For Freshwater Mussels In The Ouachita River, Arkansas, William R. Posey Ii, John L. Harris, George L. Harp

Journal of the Arkansas Academy of Science

Two freshwater mussel species thought to have been extirpated from Arkansas have recently been rediscovered in the Ouachita River in the vicinity of Camden. Prior to this survey, Wheeler (1918) last reported Arkansia wheeleri Ortmann and Walker, the Ouachita rock-pocketbook, and Cumberlandia monodonta (Say), the spectaclecase, from the Ouachita River near Arkadelphia. Quadrula apiculata (Lea), the southern mapleleaf, has been reported from Arkansas on two occasions, but due to taxonomic uncertainty, it has not been recognized in recent compilations of Arkansas freshwater mussels. During this survey, the southern mapleleaf was collected from the Ouachita River which verifies its occurrence within …

Distribution And Natural History Aspects Of The Arkansas Endemic Crayfish, Cambarus Causeyi Reimer, Henry W. Robison, Gene Leeds

Journal of the Arkansas Academy of Science

Recent collections of the Arkansas endemic crayfish, Cambarus causeyi Reimer, have yielded important information concerning its distribution and habitat within the state. New locations and county records are enumerated, habitat preferences discussed, and status ofthis heretofore rare crayfish species is clarified.

Mail Survey To Determine The Status Of The Black-Tailed Jackrabbit, Ringtail Cat, Long-Tailed Weasel, Badger And Eastern Spotted Skunk In Arkansas, Tommie J. Majors, Daphne C. Brock, Gary A. Heidt

Journal of the Arkansas Academy of Science

No abstract provided.

One-Year Study Of The Species Diversity And Relative Abundance Of Snakes And Lizards In The Jack Mountain Region Of Hot Springs County, Arkansas, Vincent A. Cobb, Jeff A. Summerhill

Journal of the Arkansas Academy of Science

No abstract provided.

Plantain Sunflower (Helianthus Occidentalis Subsp. Plantagineus) In Arkansas, Daniel L. Marsh, Timothy A. Golden

Journal of the Arkansas Academy of Science

No abstract provided.

Microorganisms Associated With The Carapace And Plastron Of Aquatic Turtles (Pseudemys Concinna And Trachemys Scripta) In Southwestern Arkansas, Renn Tumlison, Sharon Clark

Journal of the Arkansas Academy of Science

No abstract provided.

Uht Milk : Expanding The Market, Caroline Love, Ian Bell, Martin Robertson

Journal of the Department of Agriculture, Western Australia, Series 4

An increase in the export of UHT (Ultra Heat Treated) milk to Asian markets is potentially worth millions of dollars to the dairy inmdustry. This increase however, relies on the shelf life of UHT products being extended to nine months. Spoilage of UHT milk can be caused by bacterial spores which originate on-farm and are resistant to processing. Expansion in the UHT market therefore relies on a continued reduction in the number of these spores getting into raw milk. Caroline Love, Ian Bell and Martin Robertson report on the sources of spores entering milk on-farm and the control methods available.

Recent Record Of The White Sucker, Catostomus Commersoni, In The White River System, Arkansas, James C. Petersen, Faron D. Usrey, William E. Keith, James A. Wise

Journal of the Arkansas Academy of Science

No abstract provided.

What Is An Adventist? Someone Who Upholds Creation, Marco T. Terreros

Journal of the Adventist Theological Society

No abstract provided.

Mandarin Garden Club 1995-1996, Mandarin Garden Club

Mandarin Garden Club Scrapbooks

Scrapbook includes images, club news and news clippings. Cover material: Cardboard. Size: 11.5” x 9.75” x 1”.

Toolibin Catchment Revegetation Manual, Avril Baxter

Natural resources published reports

In1983, heavy winter rains resulted in severe inundation and flooding of the lower parts of the Toolibin catchment. The damage to crops and pastures was immense and costly. Local farmers realised that they needed to work together to minimise the impact of heavy rainfall events on their farm productivity.

At the same time the Western Australian Department of Conservation and Land Management (CALM) was concerned about the quality of both ground and surface water in the catchment area for Toolibin Lake, the last remaining wooded freshwater lake in the southern wheatbelt. This mutual interest led to the formation of the …

On The Mutability Of Genes And Geneticists: The "Americanization" Of Richard Goldschmidt And Victor Jollos, Michael Dietrich

Dartmouth Scholarship

No abstract provided.

Monte Carlo Experiments And The Defense Of Diffusion Models In Molecular Population Genetics, Michael Dietrich

Dartmouth Scholarship

In the 1960s molecular population geneticists used Monte Carlo experiments to evaluate particular diffusion equation models. In this paper I examine the nature of this comparative evaluation and argue for three claims: first, Monte Carlo experiments are genuine experiments: second, Monte Carlo experiments can provide an important means for evaluating the adequacy of highly idealized theoretical models; and, third, the evaluation of the computational adequacy of a diffusion model with Monte Carlo experiments is significantly different from the evaluation of the empirical adequacy of the same diffusion model.

Reducing Waste During Logging And Log Processing: Forest Conservation In Eastern Amazonia, Jeffrey J. Gerwing, Jennifer S. Johns, Edson Vidal

Environmental Science and Management Faculty Publications and Presentations

This article describes the waste associated with logging and log processing in eastern Amazonia and suggests methods for reducing both waste and forest damage as a result of logging.

Final Environmental Impact Statement For The Bal'diyaka Interpretive Center At Gregory Point On The Oregon Coast In Coos County, Joseph A. Maser

Environmental Science and Management Faculty Publications and Presentations

The Confederated Tribes of Coos, Lower Umpqua and Siuslaw Indians, in partnership with the Coos Bay District of the Bureau of Land Management (BLM) are proposing to construct and operate an interpretive center near or on the South Coast of Oregon, near Coos Bay. The Bal'diyaka Interpretive Center is envisioned to contain a 51,000 square foot main building, a recreated coastal Indian village, an ethnobotanical interpretive trail, vehicular circulation and parking, and utilities infrastructure.

This Environmental Impact Statement analyzes four alternatives for this proposed interpretive center. The proposed action of the BLM would locate the Bal'diyaka Interpretive Center on Gregory …

Development Of Skin Stripping Technique To Evaluate In Vivo Percutaneous Absorption Of Diclofenac. Ii. Correlation With In Vitro Drug Release And Application To Topical Bioavailability Determination, Parkpoom Tengamnuay, Wanthanee Samitamarn

The Thai Journal of Pharmaceutical Sciences

A skin stripping procedure to evaluate the in vivo percutaneous absorption of diclofenac diethylammonium gels was developed as a possible alternative to the conventional method of measuring plasma drug concentrations. Eight subjects participated in a fou...

Editorial: Cqi And How It Involves Pharmacy, Supakit Wongwiwatthananukit, Pharm. D.

The Thai Journal of Pharmaceutical Sciences

No abstract provided.