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Full-Text Articles in Life Sciences

Effects Of Late Gestation Supplementation And Creep Feeding On Spring Calving Beef Cows In The Nebraska Sandhills, Devin Broadhead Aug 2019

Effects Of Late Gestation Supplementation And Creep Feeding On Spring Calving Beef Cows In The Nebraska Sandhills, Devin Broadhead

Theses and Dissertations in Animal Science

The objectives of this research were to 1) evaluate the effects of late gestation supplementation, synchronization and creep feeding on cow and calf production traits 2) evaluate the pooled effects of 5 studies involving late gestation supplementation on cow and calf traits. Experiment 1 was a three year study conducted on 8 pastures at the Gudmundsen Sandhills Laboratory. Cows were assigned to 1 of 4 late-gestation supplementation treatments, postpartum progestin or control, and 1 of 2 creep feed treatments to make up a 4 x 2 x 2 factorial arrangement. Calves were followed through to slaughter.

Experiment 2 involved 5 ...


Slides: Environmental Flows In The Era Of 'River Anthropology', Rebecca Tharme Jun 2016

Slides: Environmental Flows In The Era Of 'River Anthropology', Rebecca Tharme

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Rebecca Tharme, Riverfutures Ltd.

18 slides


Factors Affecting Timing And Intensity Of Calving Season Of Beef Cow-Calf Producers In The Midwest, Lee L. Schulz, Claire E. Andresen, Patrick J. Gunn Jan 2016

Factors Affecting Timing And Intensity Of Calving Season Of Beef Cow-Calf Producers In The Midwest, Lee L. Schulz, Claire E. Andresen, Patrick J. Gunn

Animal Industry Report

Despite demonstrated market incentives to adopt controlled calving seasons, many producers still have herds that calve somewhat broadly throughout the year. Primarydata, collected through a coordinated survey effort withUSDA’s National Agricultural Statistics Service, were usedto quantify factors that affect producers’ decisions regardingtiming and intensity of calving season. Ninety-seven, 50, 33,and 26% of farms calve in the spring (Mar, Apr, May),summer (Jun, Jul, Aug), fall (Sep, Oct, Nov), and winter(Dec, Jan, Feb), respectively. Twenty-two percent observeda calving season exclusively in the spring. Sixty-six percentof respondents indicated calving season was dictated byweather, 34% because of labor availability, and ...


Beef Species Symposium: Economic Considerations Related To U.S. Beef Herd Expansion, Glynn T. Tonsor, Lee L. Schulz Sep 2015

Beef Species Symposium: Economic Considerations Related To U.S. Beef Herd Expansion, Glynn T. Tonsor, Lee L. Schulz

Economics Publications

Significant attention perpetually surrounds possible changes in breeding herd inventories in the U.S. beef cattle industry. This article outlines economic considerations of U.S. herd expansion. Factors restricting expansion include land availability, increasing production efficiency, operator demographics, capital requirements, and commodity price volatility. Several offsetting factors support herd expansion including unprecedented cow–calf returns, ongoing global beef demand growth, and timing within the current cattle cycle. In addition to these industry-wide factors, several important variations in individual ranch considerations are outlined. The authors’ expectations on future herd dynamics are provided, highlighting broader implications for individual operations, industry leaders, and ...


Aberdeen Creek Dredging Project – Restarting An Economic Engine, Thomas J. Murray Jul 2015

Aberdeen Creek Dredging Project – Restarting An Economic Engine, Thomas J. Murray

Reports

No abstract provided.


2015 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University Jan 2015

2015 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University

South Dakota Beef Report, 2015

This is the 2015 South Dakota Beef Report produced by the SDSU Department of Animal Sciences in conjunction with the Agricultural Experiment Station, and the SDSU Cooperative Extension. The articles published in this report summarize many of the beef cattle research activities conducted at South Dakota State University during 2015. The articles in this report have many levels of application. Some information has immediate application for your farm, ranch, or agribusiness. The articles include information on nutrition,management, health, growth and development, and economics of the cattle and beef industry in South Dakota.


Assessment Of The Economic Impacts Of Recreational Boating In Virginia, Thomas J. Murray Dec 2012

Assessment Of The Economic Impacts Of Recreational Boating In Virginia, Thomas J. Murray

Reports

Virginia is home to more than 200,000 recreational boats, providing a gateway to marine recreation in Chesapeake Bay and offshore waters. Virginia’s importance to boating access carries with it an expanding economy related to boating and boating related industries.

In addition to the large group of boater-citizens who reside in Virginia, local marine businesses such as marinas also provide access and berthing to many non-locally owned watercraft. While watercraft registrations provide a partial and useful estimate of the stock of boats in a region, the true economic impact arising from recreational boating primarily depends upon the type of ...


Energy Use In Pig Production: An Examination Of Current Iowa Systems, Peter J. Lammers, M. Douglas Kenealy, James B. Kliebenstein, Jay D. Harmon, Matthew J. Helmers, Mark S. Honeyman Mar 2012

Energy Use In Pig Production: An Examination Of Current Iowa Systems, Peter J. Lammers, M. Douglas Kenealy, James B. Kliebenstein, Jay D. Harmon, Matthew J. Helmers, Mark S. Honeyman

Agricultural and Biosystems Engineering Publications

This paper compares energy use for different pig production systems in Iowa, a leader in US swine production. Pig production systems include not only the growth and performance of the pigs, but also the supporting infrastructure of pig production. This supporting infrastructure includes swine housing, facility management, feedstuff provision, swine diets, and manure management. Six different facility type × diet formulation × cropping sequence scenarios were modeled and compared. The baseline system examined produces 15,600 pigs annually using confinement facilities and a corn-soybean cropping sequence. Diet formulations for the baseline system were corn-soybean meal diets that included the synthetic AA L-lysine ...


Effects Of A Premolt Calcium And Low-Energy Molt Program On Laying Hen Performance, Egg Quality, And Economics, Emily R. Dickey, Anna Johnson, Kenneth J. Stalder, Kristjan Bregendahl Feb 2012

Effects Of A Premolt Calcium And Low-Energy Molt Program On Laying Hen Performance, Egg Quality, And Economics, Emily R. Dickey, Anna Johnson, Kenneth J. Stalder, Kristjan Bregendahl

Animal Science Publications

The objectives of this study were to evaluate and compare the effects of production, physiology, egg quality, and economics of laying hens housed in a cage system when offered a calcium premolt treatment and low-energy molt diets versus a traditional feed withdrawal (FW) treatment during and after molt. In total, 981 Hy-Line W-36 laying hens (85 wk of age) housed 3 per cage were used. Six treatments were compared in a 2 × 3 factorial design with 2 calcium premolt treatments (fine and coarse) and 3 molt diets (FW, soybean hulls, and wheat middlings). The coarse Ca was a 50:50 ...


Smooth Bromegrass Pasture Beef Growing Systems: Fertilization Strategies And Economic Analysis, A. K. Watson, T. J. Klopfenstein, Walter H. Schacht, G. E. Erickson, D. R. Mark, Matt K. Luebbe, K. R. Brink, Matthew A. Greenquist Jan 2012

Smooth Bromegrass Pasture Beef Growing Systems: Fertilization Strategies And Economic Analysis, A. K. Watson, T. J. Klopfenstein, Walter H. Schacht, G. E. Erickson, D. R. Mark, Matt K. Luebbe, K. R. Brink, Matthew A. Greenquist

Faculty Papers and Publications in Animal Science

In recent years, prices for N fertilizer have increased dramatically, reducing net returns of fertilized pasture systems. A 5-yr study from 2005 to 2009 was conducted to evaluate management strategies and relative differences in profitability for 3 methods of backgrounding calves on smooth bromegrass pastures. Forty-five steers were used each year for a total of 225 animals in a randomized complete block design. Treatments included pastures fertilized in the spring with 90 kg N/ha (FERT), nonfertilized pastures with calves supplemented daily with dried distillers grains plus solubles (DDGS) at 0.6% of BW (SUPP), and control (CONT) pastures that ...


Virginia Charter Boat Workshop Summary March 2012, Susanna Musick Jan 2012

Virginia Charter Boat Workshop Summary March 2012, Susanna Musick

Reports

No abstract provided.


Assessment Of The Economic Impacts Of Recreational Boating In Middlesex County, Virginia, Thomas J. Murray Mar 2011

Assessment Of The Economic Impacts Of Recreational Boating In Middlesex County, Virginia, Thomas J. Murray

Reports

No abstract provided.


An Examination Of Methods: Hand Picking Red Crabs And Keeping Them Alive On Shore, Dan Kauffman, Robert A. Fisher Oct 2010

An Examination Of Methods: Hand Picking Red Crabs And Keeping Them Alive On Shore, Dan Kauffman, Robert A. Fisher

Reports

No abstract provided.


Nonsolar Energy Use And One-Hundred-Year Global Warming Potential Of Iowa Swine Feedstuffs And Feeding Strategies, Peter J. Lammers, M. Douglas Kenealy, James B. Kliebenstein, Jay D. Harmon, Matthew J. Helmers, Mark S. Honeyman Mar 2010

Nonsolar Energy Use And One-Hundred-Year Global Warming Potential Of Iowa Swine Feedstuffs And Feeding Strategies, Peter J. Lammers, M. Douglas Kenealy, James B. Kliebenstein, Jay D. Harmon, Matthew J. Helmers, Mark S. Honeyman

Agricultural and Biosystems Engineering Publications

Demand for nonsolar energy and concern about the implications of fossil fuel combustion have encouraged examination of energy use associated with agriculture. The United States is a global leader in pig production, and the United States swine industry is centered in Iowa. Feed is the largest individual input in pig production, but the energy consumption of the Iowa swine feed production chain has yet to be critically examined. This analysis examines nonsolar energy use and resulting 100-yr global warming potential (GWP) associated with the swine feed production chain, beginning with cultivation of crops and concluding with diet formulation. The nonsolar ...


Applications And Potentials For Biogenic Methane Recovery Operations In Nebraska Agriculture, Industry, And Economic Development, David Micheal Dingman Jul 2009

Applications And Potentials For Biogenic Methane Recovery Operations In Nebraska Agriculture, Industry, And Economic Development, David Micheal Dingman

Environmental Studies Undergraduate Student Theses

ABSTRACT: This thesis report illustrates the applications and potentials of biogenic methane recovery in Nebraska’s agricultural and industrial sectors and as a means for increasing sustainable economic development in the state’s rural communities. As the nation moves toward a new green economy, biogenic methane recovery as a waste management strategy and renewable energy resource presents significant opportunities for Nebraska to be a national and world leader in agricultural and industrial innovation, advanced research and development of renewable energy technology, and generation of new product markets. Nebraska’s agricultural economy provides a distinct advantage to the state for supporting ...


Assessment Of The Economic Impacts Of Recreational Boating In The City Of Hampton, Thomas J. Murray, James Kirkley, Doug Lipton Jan 2009

Assessment Of The Economic Impacts Of Recreational Boating In The City Of Hampton, Thomas J. Murray, James Kirkley, Doug Lipton

Reports

No abstract provided.


Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz Jan 2009

Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz

Leopold Center Completed Grant Reports

Grazing management practices have the potential to mitigate some problems with sediment and phosphorus loading in pasture streams. The project demonstrated possible strategies to lessen grazing impacts on streams.


A Study Of The Factors That Influence Consumer Attitudes Towards Beef Products Using The Conjoint Market Analysis Tool, Brian E. Mennecke, Anthony M. Townsend, Dermot J. Hayes, Steven M. Lonergan Jan 2009

A Study Of The Factors That Influence Consumer Attitudes Towards Beef Products Using The Conjoint Market Analysis Tool, Brian E. Mennecke, Anthony M. Townsend, Dermot J. Hayes, Steven M. Lonergan

Leopold Center Completed Grant Reports

Beef producers looking for a competitive edge in today's markets need information about the qualities that consumers consider most important. Using conjoint marketing analysis allowed the investigators to sort out the most relevant characteristics for meat purchasers.


Economic Outlook For Expansion Of The Eastern Shore Farmers’ Market: Seafood Handling, Storage, And Transportation Facility, Thomas J. Murray, James E. Kirkley Sep 2008

Economic Outlook For Expansion Of The Eastern Shore Farmers’ Market: Seafood Handling, Storage, And Transportation Facility, Thomas J. Murray, James E. Kirkley

Reports

No abstract provided.


Slides: Rethinking Western Water Law: Whatever Happened To The Public Interest?, Mark Squillace Jun 2008

Slides: Rethinking Western Water Law: Whatever Happened To The Public Interest?, Mark Squillace

Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)

Presenter: Mark Squillace, Director, Natural Resources Law Center, University of Colorado Law School

15 slides


Business Organization And Coordination In Niche Hog Marketing, James Kliebenstein, Brent Hueth, Maro A. Ibarburu Jan 2008

Business Organization And Coordination In Niche Hog Marketing, James Kliebenstein, Brent Hueth, Maro A. Ibarburu

Leopold Center Completed Grant Reports

Niche hog marketing enterprises face a unique set of challenges. This study considered five critical management issues, and analyzed the workings of two niche pork markets in Iowa. Issues of market timing, product quality, process verification, business organization, and sharing of returns are discussed.


Market Assessment And Feasibility Analysis For Small Scale Aquaculture Development In The Southside Of Virginia Aquaculture Cooperative Feasibility Study, Thomas J. Murray Dec 2006

Market Assessment And Feasibility Analysis For Small Scale Aquaculture Development In The Southside Of Virginia Aquaculture Cooperative Feasibility Study, Thomas J. Murray

Reports

No abstract provided.


Economic Activity Associated With The Inaugural “Virginia In-Water Boat Expo”, September 9-11, 2005, Thomas J. Murray Apr 2006

Economic Activity Associated With The Inaugural “Virginia In-Water Boat Expo”, September 9-11, 2005, Thomas J. Murray

Reports

No abstract provided.


The Cost Of Corn Processing For Finishing Cattle, C. N. Macken, G. E. Erickson, T. J. Klopfenstein Jan 2006

The Cost Of Corn Processing For Finishing Cattle, C. N. Macken, G. E. Erickson, T. J. Klopfenstein

Faculty Papers and Publications in Animal Science

Three corn processing methods were compared for use in 5,000- and 20,000-head capacity feedlots. Processing methods were dry-rolled (DRC), early harvest and ensiling high-moisture (HMC), and steam-flaked corn (SFC). Processing costs were determined to be $1.58, $4.71, and $9.57/t (metric ton; DM basis) for DRC, HMC, and SFC, respectively, for the 5,000-capacity feedlot. Processing costs were less for the 20,000-capacity feedlot at $0.81, $3.07, and $6.23/t (DM basis) for DRC, HMC, and SFC, respectively. Using these economic calculations in an 85% corn diet (DM basis), an improvement of ...


Evaluating Consumer Acceptability And Willingness To Pay For Various Beef Chuck Muscles, A.C. Kukowski, R.J. Maddock, D.M. Wulf, G.L. Taylor Nov 2005

Evaluating Consumer Acceptability And Willingness To Pay For Various Beef Chuck Muscles, A.C. Kukowski, R.J. Maddock, D.M. Wulf, G.L. Taylor

Animal Science Faculty Publications

In-home consumer steak evaluations, followed by centralized laboratory-setting auctions, were used to determine consumer (n = 74 consumers) acceptability and willingness to pay for various beef chuck muscles. The infraspinatus (IF), serratus ventralis (SV), supraspinatus (SS), and triceps brachii (TB) from the beef chuck were evaluated against LM steaks from the rib to determine price and trait differentials. Muscles from USDA Choice, boneless, boxed-beef subprimals were aged 14 d, frozen, and cut into 2.5-cmthick steaks. Consumers received two steaks from each muscle for in-home evaluations of uncooked steak appearance and cooked steak palatability. After in-home evaluation of steaks, consumers participated ...


Agenda: Endangered Species Act Congressional Field Tour, University Of Colorado Boulder. Natural Resources Law Center Aug 2005

Agenda: Endangered Species Act Congressional Field Tour, University Of Colorado Boulder. Natural Resources Law Center

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

The Center sponsored its third annual field tour for staff members of the United States Congress, the United States Environmental Protection Agency, and the Colorado state legislature.


The Potential Economic Impacts On Virginia’S Economy Of The Closure Of One Crab Processing Plant, James E. Kirkley Jun 2005

The Potential Economic Impacts On Virginia’S Economy Of The Closure Of One Crab Processing Plant, James E. Kirkley

Reports

No abstract provided.


Predicting Animals In Feedlot That Produce Discounted Carcasses, Maro A. Ibarburu, John D. Lawrence Jan 2005

Predicting Animals In Feedlot That Produce Discounted Carcasses, Maro A. Ibarburu, John D. Lawrence

Animal Industry Report

U.S. beef producers are striving to improve the quality of their product. Most packers send economic signals to producers by paying quality grade and yield grade premiums based on the USDA standards in an effort to reward the higher quality beef producers and receive better quality animals in their slaughter plants. But the premiums and discounts for quality and yield grade vary between plants and grids. Therefore, identifying the characteristics of the lot before deciding which plant or grid system to sell their cattle is of special relevance for the producers.


Valuing Double Vaccination In Feeder Cattle, Maro A. Ibarburu, Beth E. Doran, J. D. Lawrence Jan 2005

Valuing Double Vaccination In Feeder Cattle, Maro A. Ibarburu, Beth E. Doran, J. D. Lawrence

Animal Industry Report

Pre-conditioning is a calf management program that grew out of a concept that originated in Iowa in 1965. The program is designed to reduce risk, health problems and improve profitability for both cow-calf producers and cattle feeders. Dr. John Herrick, Extension Veterinarian at the ISU College of Veterinary Medicine, and Dr. Harold Amstutz of the American Association of Bovine Practitioners were instrumental in developing the preconditioning program and coordinating the delivery of the program with Cliff Iverson, Area Extension Livestock Specialist, and co-workers in southeast Iowa. Today, Iowa leads the nation in the size and scope of this program.


The Impact Of Prrs On The Pig Cost Of Production, Colin D. Johnson, John W. Mabry, James B. Kliebenstein, Eric Neumann Jan 2005

The Impact Of Prrs On The Pig Cost Of Production, Colin D. Johnson, John W. Mabry, James B. Kliebenstein, Eric Neumann

Animal Industry Report

Porcine Reproductive and Respiratory Syndrome (PRRS) has had a significant impact on the profitability of swine production. As a means to quantify the financial impact of PRRS to the U.S. swine industry, a study was conducted. This study utilized case studies and a Delphi survey to identify the various impacts PRRS has on farms. Results suggest that impacts to individual farms vary greatly but aggregated data for approximately 100 million market swine being sold each year in the U.S., estimates PRRS adds somewhere between $5.60 and $7.62 to the cost per head sold.