Life Sciences Commons^™

Comparison Of Swine Performance When Fed Diets Containing Roundup Ready® Corn, Parental Line Corn, Or Two Commercial Corns, Robert L. Fischer, Austin Lewis, Phillip S. Miller

Nebraska Swine Reports

This experiment was conducted to evaluate growth performance and carcass quality measurements in growing-finishing pigs fed diets containing either Roundup Ready® corn expressing the CP4 EPSPS protein, the parental control corn, or two commercial sources of nongenetically modified corn. The experiment used 72 barrows and 72 gilts with an initial body weight of 50 lb. The pigs were allotted to a randomized complete block design with a 2 x 4 factorial arrangement of treatments (two sexes x four corn hybrids). The experiment continued until the average body weight was 255 lb, at which time all pigs were slaughtered. Realtime ultrasound …

Influence Of Linoleic Acid Isomers On Body Fat, Kim Hargrave, Kristin Nollette, Merlyn K. Nielsen, Jess L. Miner

Nebraska Swine Reports

In two studies, mice were fed diets containing either individual conjugated linoleic acid (CLA) isomers or a mixture of isomers in the presence or absence of dietary essential fatty acids. Mice fed the C18:2 Δ10,12 CLA isomer lost as much body fat as mice fed a mixture of isomers. This effect was not observed when the mice were fed the C18:2 Δ9,11 isomer or when feed intake was restricted. The loss of body fat was much greater in mice consuming an essential fatty acid deficient diet versus a control diet. This supports our hypothesis that for CLA to deplete body …

Economic Analyses Of Feeding 18 G Per Ton Paylean® To Crosses Of The Ne Index Line, Rodger K. Johnson, Phillip S. Miller, D. B. Petry, R. F. Fischer

Nebraska Swine Reports

Economic returns per pig for F₁ and terminal cross barrows and gilts of the NE Index line when fed a diet with or without PAYLEAN® at 18 g per ton for 28 d before slaughter were compared. Although not significant, terminal cross pigs with 25% Line I genes were more profitable than F₁ pigs with 50% Line I genes and gilts were more profitable than barrows. Several scenarios were modeled to evaluate the economic returns from feeding PAYLEAN®. Increased profits were similar across lines and sexes but varied depending on whether intransit death losses were considered treatment effects. …

Effects Of Glutamine On Growth Performance And Small Intestine Villus Height In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis, Robert L. Fischer

Nebraska Swine Reports

The pig’s small intestinal structure and function is altered during the days that follow weaning. As a consequence, the digestive and absorptive capacity of weanling pigs may decrease during this period, and this may be partially responsible for the post-weaning growth lag. Additionally, health benefits may be associated with an improved small intestinal structure and function during the early post-weaning period. This experiment was conducted to evaluate the effects of crystalline glutamine and (or) diet complexity on small intestine villus height and growth performance of 18-day-old pigs. During the 21-day trial, no differences in villus height were observed between pigs …

Factors Affecting Bacon Color And Composition, J. E. Mann, Roger W. Mandigo, Dennis E. Burson, R. Garza

Nebraska Swine Reports

The objective of this study was to determine the effects of genetic line, diet, sex, slaughter weight and location within the slab on the proximate composition and color of bacon lean and fat. Bacon slabs manufactured from bellies of 756 barrows and gilts of six different genetic lines equally distributed among four feeding regimes, with differing lysine levels, and three weight groups and processed into sliced retail bacon (nine slices/inch) were used. Sliced bacon slabs were divided into five equally sized sections and two bacon slices were taken from the anterior end of each for machine vision and proximate analyses. …

Growth And Carcass Responses In The Ne Index Line Estimated In Pure-Line And Crossbred Litters, D. B. Petry, J. W. Holl, Rodger K. Johnson

Nebraska Swine Reports

The objective was to estimate responses in growth and carcass traits in the NE Index line (I) that was selected 19 generations for increased litter size. Responses in pure-line, F₁ and 3-way cross litters were compared. In Exp 1, 694 gilts that were retained for breeding, including 448 I and control (C) and 246 F₁ I and C by Danbred™ Landrace (L), were evaluated. Direct genetic effects of I and C did not differ for backfat or days to 230 lb; however, I had 0.24 in² smaller longissimus muscle area (LMA) than C (P < 0.05). F₁ gilts had …

Reproductive Responses In The Ne Index Line, Rodger K. Johnson, D. B. Petry

Nebraska Swine Reports

The NE Index Line (Line I) has been selected since 1981 only for litter size and as a pure-line has 3.5 to 4 more pigs per litter than its randomly selected control (Line C). Line I has been released to the industry where it is being used in crossbreeding applications, but whether the response realized in the pure-line is expressed in crossbreeding applications is not known. The objective of this experiment was to estimate responses in reproduction in Line I in pure-line sows, in pure-line sows mated to produce F₁ litters and in F₁ sows mated to produce …

Competition — It’S Not Just “Cost” Of Production, Allen Prosch

Nebraska Swine Reports

Pork producers are faced with numerous competitive challenges. Having a higher cost of production than other pork producers has always been a reason to exit the pork industry. Even when their cost of production is competitive, producers still choose to exit the industry. Hog prices, corn prices and the hog/corn ratio from 1970 to 2000 were examined in relation to the change in the number of pork producers in Nebraska to identify the degree of influence that each had on producer’s decisions to enter or exit pork production. The annual average price of market hogs per cwt and the price …

Update On The Economics Of Feeding Ractopamine (Paylean™) To Finishing Pigs, Duane Reese, Larry L. Bitney

Nebraska Swine Reports

Ractopamine is a feed additive that improves feed efficiency, daily gain, and carcass merit in finishing pigs. An economic feasibility analysis on the feeding of 4.5 and 9.0 g/ton ractopamine to finishing pigs fed a 1% lysine, corn-soybean meal diet for an average of 29 days before slaughter was conducted. The analysis was performed in two stages: 1) an economic benefit for ractopamine was calculated from revenues due to improved feed efficiency, daily gain and carcass yield (dressing percent), and 2) the amount of a carcass lean premium needed per pig to recover the added cost of feeding ractopamine was …

Applicability Of High-Rise™ Hog Housing For Finishing Operations, Richard R. Stowell

Nebraska Swine Reports

The design of High-Rise™ swine facilities allows the generation of a solid, manure-laden material from hogs raised in confinement housing with slatted floors. The volume of manure that must be handled annually can be reduced through continuous moisture loss that takes place within the system’s drying bed and recycling of bed material. Recycling typically involves mixing material twice a year — at the end of finishing periods. Moisture contents of twice-recycled manure-laden bed material ranged between 55-65% with continuous aeration for three years of production. This moisture range makes the material acceptable directly as feedstock for composting. Ammonia emissions should …

Sistem Buku Resipi Bermultimedia Smartcook, Mohd Amin Nor Aliza

Student Works (2000-2009)

Sistem SmartCook adalah merupakan projektahun akhir bagi memenuhi keperluan dalam penganugerahan Ijazah Sarjana Muda di Fakulti Sains Komputer. Sistem SmartCook merupakan sistem yang berkonsepkan buku resipi bermultimedia. Di samping melaksanakan kursus latihan ilmiah, ia juga bertujuan dalam menerajui era pembangunan teknologi maklumat yang semakin pesat kini dan sama-sama bersaing dengan perisian yang wujud, namun banyak yang tidak memenuhi kehendak pengguna sepenuhnya seperti antaramuka yang kurang menarik dan sebagainya. SmartCook mempunyai kandungan koleksi berbagai resepi seperti masakan-masakan dari berbagai bangsa, aneka pembasuh mulut dan diselitkan juga koleksi petua berkaitan masakan. Semua maklumat di dalam sistem ini dimanipulasikan dalam interaktif multimedia yang …

Foot Strike Patterns After Obstacle Clearance During Running, Shane D. Scholten, Nicholas Stergiou, Alan Hreljac, Jeremy J. Houser, Daniel Blanke, L. Russell Alberts

Journal Articles

Purpose

Running over obstacles of sufficient height requires heel strike (HS) runners to make a transition in landing strategy to a forefoot (FF) strike, resulting in similar ground reaction force patterns to those observed while landing from a jump. Identification of the biomechanical variables that distinguish between the landing strategies may offer some insight into the reasons that the transition occurs. The purpose of this study was to investigate the difference in foot strike patterns and kinetic parameters of heel strike runners between level running and running over obstacles of various heights.

Methods

Ten heel strike subjects ran at their …

Mouse Ribonuclease Iii. Cdna Structure, Expression Analysis, And Chromosomal Location, Kristine R. Fortin, Rhonda H. Nicholson, Allen W. Nicholson

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Members of the ribonuclease III superfamily of double-stranded(ds)-RNA-specific endoribonucleases participate in diverse RNA maturation and decay pathways in eukaryotic and prokaryotic cells. A human RNase III orthologue has been implicated in ribosomal RNA maturation. To better understand the structure and mechanism of mammalian RNase III and its involvement in RNA metabolism we determined the cDNA structure, chromosomal location, and expression patterns of mouse RNase III.

Results

The predicted mouse RNase III polypeptide contains 1373 amino acids (~160 kDa). The polypeptide exhibits a single C-terminal dsRNA-binding motif (dsRBM), tandem catalytic domains, a proline-rich region (PRR) and an RS domain. …

Ocean: An Integrated Curriculum Unit, Institute For The Development Of Gifted Education, Ricks Center For Gifted Children, University Of Denver

Ricks Curriculum Units Series

An integrated curriculum is an instructional approach that connects the disciplines to an underlying theme or topic. Immersing students in an integrated-thematic unit provides the backdrop for experiences to occur across the disciplines. Shaping coursework around integrated themes is especially appropriate for gifted students, however using an integrated-thematic curriculum is appropriate for all learners as it develops students' abilities to make connections, to solve problems by looking at multiple perspectives, and to integrate information from different fields of experience. An integrated-thematic curriculum permits students to be active participants in their own learning as they design their own explorations and take …

Spatial And Temporal Variability In Zooplankton Community Dynamics In Three Urbanized Bayous Of The Pensacola Bay System, Florida, Usa, Emile M. Lores, Michael A. Lewis, Ziad A. Malaeb

Gulf and Caribbean Research

Spatial and temporal patterns in zooplankton community composition and abundance in coastal areas of the Gulf of Mexico are not well understood. Spatial and temporal differences in zooplankton community composition and abundance from 10 stations located in four sites are presented (Pensacola Bay and Bayou Texar, Bayou Chico, and Bayou Grande, three adjacent mesohaline-tidal bayous affected by urban and industrial development). Statistically significant differences (P < 0.05) were found in log-biovolume among sites. The mean biovolume of zooplankton was highest in Pensacola Bay (0.38 ml m^-3) followed by Bayou Grande (0.21 ml m^-3), Bayou Chico (0.14 ml m^-3), and Bayou Texar (0.06 ml m^-3). Mean zooplankton abundances (organisms m^-3) in Pensacola …

Crustacea Of The Cayman Islands, British West Indies. I. Records Of Mysids From Shallow Water Non-Reef Habitats, W. Wayne Price, Richard W. Heard, Jason T. Harris, Croy M.R. Mccoy

Gulf and Caribbean Research

A single species of mysid Siriella chierchiae has been previously reported from the Cayman Islands. However, between May 1995 and August 1999, 20 species of mysids were collected from shallow water non-reef habitats surrounding Grand Cayman and Little Cayman Islands. Of the species collected, one species Anchialina typica has a cosmopolitan distribution in tropical and subtropical seas. Thirteen species (Amathimysis cherados, A. gibba, Bowmaniella johnsoni, Dioptromysis paucispinosa, Heteromysis bermudensis, H. mayana, Mysidium columbiae, M. gracile, M. integrum, Mysidopsis bispinulata, M. brattstromi, Parvimysis bahamensis, Siriella chierchiae) are …

Glass Capillary Tube Feeding: A Method For Infecting Nymphal Ixodes Scapularis (Acari: Ixodidae) With The Lyme Disease Spirochete Borrelia Burgdorferi, Anne H. Broadwater, Daniel E. Sonenshine, Wayne L. Hynes, Shane Ceraul, Aravinda M. De Silva

Biological Sciences Faculty Publications

We evaluated an artificial capillary feeding method to infect nymphal Ixodes scapularis (Say) ticks with Borrelia burgdorferi, the causative agent of Lyme disease. Thirty to 70% of the nymphs were infected after feeding for 2.5 h from glass capillary tubes filled with a solution of spirochetes. Capillary infection was stable and persisted in the nymphs for at least 10 d after feeding. Capillary feeding also maintained natural vector competence patterns because I. scapularis ticks acquired infection unlike Dermacentor variablis (Say), which did not become infected. Capillary infected I. scapularis nymphs were capable of transmitting the infection to naive mice …

Autotrophic Picoplankton: Their Presence And Significance In Marine And Freshwater Ecosystems, Harold G. Marshall

Biological Sciences Faculty Publications

No abstract provided.

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Extraction Of Silymarin Compounds From Milk Thistle (Silybum Marianum) Seed Using Hot, Liquid Water As The Solvent, J. F. Alvarez Barreto, D. Julie Carrier, E. C. Clausen

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

High-value specialty chemicals are usually obtained from natural products by extracting with generally regarded as safe (GRAS) solvents. Because organic solvents are quite often used, high operating and disposal costs occur. When compared to traditional solvents, water is an interesting alternative because of its low operating and disposal costs. Milk thistle contains compounds (taxifolin, silychristin, silydianin, silybinin A, and silybinin B) that display hepatoxic protection properties. This paper examines the batch extraction of silymarin compounds from milk thistle seed meal in 50°C, 70°C, 85°C and 100°C water as a function of time. For taxifolin, silychristin, silybinin A, and silybinin B, …

The Influence Of Storing High Moisture-Content Rough Rice On Milling Quality, Julita M. Manski, Terry Siebenmorgen

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The objective of this research was to determine the influence on drying characteristics of storing high-moisture content (MC) rough rice under various conditions and durations before drying. Two cultivars of rice, 'Bengal', a medium-grain cultivar, and 'Cypress', a long-grain cultivar, were used. The MC of 'Bengal' was 24.8%1 and that of 'Cypress' was 20.4% at harvest. Immediately after harvest, drying runs were performed with samples of both cultivars under two drying air conditions: one at 51.7°C (125°F) and 25% relative humidity (RH), and the other at 60°C (140°F) and 17% RH. Storage treatments using the high MC rice were also …

Bradyrhizobium Japonicum And Soybean Symbiotic Response To Glyphosate In Glyphosate-Tolerant Soybeans, Jodie M. Scheele, C. Andy King, Marilynn K. Davies, Larry C. Purcell

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Soybean (Glycine max) grain contains approximately 40% protein and 6.5% nitrogen (N) on an elemental basis. Therefore, the plant requires an abundant N supply throughout its life cycle, and symbiotic N fixation of soybean with Bradyrhizobium japonicum provides 40 to 85% of the soybean N. Although soybean cultivars have been genetically engineered to withstand the herbicide glyphosate, B. japonicum grown in culture is sensitive to glyphosate. We hypothesized that glyphosate applied to glyphosate-tolerant soybean would inhibit nodulation by B. japonicum unless B. japonicum could also be selected for glyphosate tolerance. Cultures of B. japonicum were challenged with sublethal doses of …

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 3 2002, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Expression Patterns Of Novel Wound-Inducible Plant Genes In Medicago Truncatula, Mandy M. Cox, Kenneth L. Korth

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Terpenoids are an important class of defensive compounds that can accumulate in plants after pathogen infection or injury by chewing insects. Clones encoding putative terpene synthases and an oxidosqualene synthase, isolated from insect-damaged Medicagotruncatula leaves, were selected from an expressed sequence tag (EST) database. The cDNA clones were used as radiolabeled probes to analyze gene expression in leaves treated by known factors that can trigger a defense response in plants. Transcript levels for all of the genes examined increased in response to artificial wounding, insect herbivory, and methyl jasmonate (meJA) treatments, whereas salicylic acid (SA) and glucose oxidase (GOX) had …

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Letter From The Dean, Gregory J. Weidemann

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Identifying Safety Strategies For On-Farm Grain Bins Using Risk Analysis, Raymond S. Avery, Dylan P. Carpenter, Thomas A. Costello

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The potential for grain bin accidents exists each year on Arkansas farms and farms across the nation. The trend toward increasing utilization of on-farm grain drying and storage could lead to an increase in grain bin accidents. The sharp contrast between a safe, efficient operation and one that leads to injury or death can be represented as sets of farmer-decisions and subsequent chance events. A model was constructed to define the risk associated with grain bin entry and in-bin activity so that safety interventions could be identified and implemented to reduce the probability of injury and death. A survey was …

Smokejumper Obituary: Liston, David John (Fairbanks 1998), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Thornton, Darold C. (North Cascades 1969), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Poole, Thomas Joseph (Missoula 1942), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.