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- SDSU Extension Fact Sheets (17)
- South Dakota Swine Field Day Proceedings and Research Reports, 1985 (17)
- South Dakota Sheep Field Day Proceedings and Research Reports, 1985 (16)
- Economics Commentator (14)
- Economics Staff Paper Series (13)
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- South Dakota Poultry Field Day Proceedings and Research Reports, 1985 (8)
- Agricultural Experiment Station Technical Bulletins (1939-2011) (6)
- Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011) (6)
- SDSU Extension Circulars (6)
- SDSU Extension Extra Archives (5)
- South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1985 (5)
- Agricultural Experiment Station Circulars (4)
- Agricultural Experiment Station and Research Farm Annual Reports (3)
- Agronomy, Horticulture, and Plant Science Publications (2)
- Commencement Programs (2)
- Economics Research Reports (2)
- South Dakota State University Catalogs and Bulletins: 1935 to present (2)
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Northeast Research Station Watertown, South Dakota Annual Progress Report, 1985, Agricultural Experiment Station, Plant Science Department
Northeast Research Station Watertown, South Dakota Annual Progress Report, 1985, Agricultural Experiment Station, Plant Science Department
Agricultural Experiment Station and Research Farm Annual Reports
This is the 1985 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes information on the 1985 crop season, nitrogen influence, spring wheat breeding, oats, barley and rye testing, corn breeding, flax regional trial potato variety trial, soybean row spacing, favabean and lupine row spacing, millet control in soybeans, herbicide demonstrations.
South Dakota State University Graduation Exercises, December 14, 1985, Brookings, South Dakota, South Dakota State University
South Dakota State University Graduation Exercises, December 14, 1985, Brookings, South Dakota, South Dakota State University
Commencement Programs
Please be advised that the individuals listed in the program do not signify an official confirmation of having met the graduation requirements. The Fall 1985 Graduation Exercises will commence with introductions by University President Robert T. Wagner. Serving as honorary marshals are Dorothy J. Cline, Associate Professor Emeritus of Journalism, and Paul E. Collins, Professor Emeritus of Horticulture. Delivering the graduation address will be Dr. Robyn P. Hillam, Associate Professor of Microbiology. Dr. Paul E. Nordstrom, Acting Vice President for Academic Affairs, will extend acknowledgment to honor students. Commissions of Army and Air Force officers will be administered by Lt. …
1985 Grain Sorghum Performance Trials, J.J. Bonnemann
1985 Grain Sorghum Performance Trials, J.J. Bonnemann
Agronomy, Horticulture, and Plant Science Publications
The relative performance of grain sorghum cultivars grown under similar environmental conditions is evaluated in this report for the 1985 crop season. Performance records of all entries harvested in 1985 and the available two-through four-year averages are presented. The trials were conducted under the Plant Science Department program in Crop Performance Testing, Agricultural Experiment Station, South Dakota State University.
1985 Corn Performance Trials, J.J. Bonnemann
1985 Corn Performance Trials, J.J. Bonnemann
Agronomy, Horticulture, and Plant Science Publications
The relative performance of corn hybrids grown under similar environmental conditions in 1985 are evaluated in this report. Information in the accompanying tables includes grain yields in bushels per acre, moisture percentages of either ear corn or shelled corn at harvest, performance scores and other related information. Records of the corn hybrids harvested in 1985 and available two-, three- and four-year averages of yield, moisture and stalk lodging percentages are also presented. The trials reported here were conducted under the Plant Science Department program in Crop Performance Testing, Agricultural Experiment Station, SDSU.
Formulating Supplements For Beef Cows, Cooperative Extension South Dakota State University
Formulating Supplements For Beef Cows, Cooperative Extension South Dakota State University
SDSU Extension Fact Sheets
This publication provides information on the nutritional requirements of beef cows. It explains how to compute supplements and includes a sample problem with a table of nutrient needs for beef cows and heifers.
Beef Cow Nutrition And Reproduction, Cooperative Extension South Dakota State University
Beef Cow Nutrition And Reproduction, Cooperative Extension South Dakota State University
SDSU Extension Fact Sheets
This publication provides information on how nutrition can increase the reproductive performance of cows in a cow-calf operation. It discusses the nutrient requirements of breeding cattle and provides guidance for creating a cow herd nutrition program.
Southeast South Dakota Experiment Farm Annual Progress Report, 1985, Agricultural Experiment Station
Southeast South Dakota Experiment Farm Annual Progress Report, 1985, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This twenty-fifth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, crop rotation, sorghum, small grains, livestock, and pest and weed control.
West River Agricultural Research And Extension Center Progress Report, 1985, Agricultural Experiment Station
West River Agricultural Research And Extension Center Progress Report, 1985, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This is the 1985 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary for all the counties involved in research, small grain variety trials, oilseed crops, edible crops, forage crops, management, tillage and cultural practices, and numerous weed control research projects.
The Problem Of Aggregation In Spatial Equilibrium Analysis, Brian Schmiesing, Steven Blank
The Problem Of Aggregation In Spatial Equilibrium Analysis, Brian Schmiesing, Steven Blank
Economics Staff Paper Series
Aggregation across time has long been recognized as a potential source of specification error within time series modeling. This source of specification error has major implications for the use of causality tests in spatial equilibrium analyses. This study reviews the theoretical econometric literature to generate hypotheses which are empirically tested to illustrate the impacts of aggregation on causality tests. Granger causality tests for three major corn markets reveal one-way causality to be "fragile" with respect to changes in the level of time aggregation in data. Dynamic multipliers are discussed as being one method of checking the specification of the model.
Least-Cost Rations And Feed Analysis, J. J. Wagner
Least-Cost Rations And Feed Analysis, J. J. Wagner
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1985
The objectives of this paper are to: 1) outline the information necessary to formulate least-cost rations and 2) demonstrate the value of feed analysis and proper ration formulation.
Twenty-Eighth Annual Cattle Feeders Day, Animal Science Department
Twenty-Eighth Annual Cattle Feeders Day, Animal Science Department
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1985
These are the complete proceedings of the twenty-eigth annual Cattle Feeders Day held on December 5, 1985 at South Dakota State University.
South Dakota State University 1986-1988 Graduate Catalog, South Dakota State University
South Dakota State University 1986-1988 Graduate Catalog, South Dakota State University
South Dakota State University Catalogs and Bulletins: 1935 to present
No abstract provided.
Effect Of Mixed Or Phase Feeding Two Ratios Of Corn And Corn Silage On Performance Of Feedlot Steers, R. H. Pritchard
Effect Of Mixed Or Phase Feeding Two Ratios Of Corn And Corn Silage On Performance Of Feedlot Steers, R. H. Pritchard
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1985
An important consideration for the midwestern farmer-feeder is to find a feeding program that optimizes production in the farming operation. One common option available in this region is to vary the levels of corn and corn silage used in growing and finishing diets. Variables that must be included in this decision are: 1) possible negative associative effects on digestibility caused by grain-forage mixtures; 2) possible affects on carcass weight and quality; and 3) the amount of time cattle must be on feed.
Two ratios of corn and corn silage were fed either as a mixture provided throughout the feeding period …
Effect Of Climate On The Economics Of Cattle Feeding In South Dakota, R. H. Pritchard
Effect Of Climate On The Economics Of Cattle Feeding In South Dakota, R. H. Pritchard
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1985
Depressed conditions of the cattle feeding industry in the Upper Midwest have promted interested parties to evaluate in detail, the criteria involved to help identify areas where relief can be obtained. In our region, questions have been raised regarding the disadvantage to cattle feeders caused by our climate. This report summarizes an effort to model the extent that weather conditions impacy the efficiency of feedlot cattle in South Dakota and the economic limits imposed.
Effect Of Preconditioning On Performance And Health Of Feeder Steers, J. K. Swann
Effect Of Preconditioning On Performance And Health Of Feeder Steers, J. K. Swann
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1985
Preconditioning may be defined as preparing a calf to better endure stress associated with shipment from the ranch to the feedlot. The South Dakota preconditioning (“Green Tag”) program requires calves be castrated, dehorned and healed by sale time, vaccinated for IBR, BVD, PI and 7-way clostridia, treated for parasites, and be weaned and bunk adjusted for at least 30 days to be considered preconditioned. It is suggested to vaccinate calves at least two weeks before weaning to reduce stress.
Advantages to the program would seem to be heavier calves at sale time, reduced transit shrink, reduced sickness and death loss …
Effect Of Level Of Barley In Finishing Diets Of Swine Performance And Carcass Characteristics, R. C. Wahlstrom, M. K. Hoppe, G. W. Libal
Effect Of Level Of Barley In Finishing Diets Of Swine Performance And Carcass Characteristics, R. C. Wahlstrom, M. K. Hoppe, G. W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Barley continues to be a feed ingredient available to swine producers in South Dakota, that can be used as a substitute for corn. In experiments reported in the 1984 South Dakota Swine Day Proceedings we reported that pigs fed barley diets gained slower during the grower period (60 to 125 lbs) but not during the finisher period (125 to 220 lb). This experiment was designed to evaluate various levels of barley, 0 to 100% of the grain, in diets fed to pigs from an average of 80 to 220 lb market weight.
Performance Of Finishing Pigs As Affected By Prior Performance And The Addition Of An Antibiotic During The Finishing Period, G. W. Libal, R. C. Wahlstrom, R. Hanson
Performance Of Finishing Pigs As Affected By Prior Performance And The Addition Of An Antibiotic During The Finishing Period, G. W. Libal, R. C. Wahlstrom, R. Hanson
South Dakota Swine Field Day Proceedings and Research Reports, 1985
In a study reported last year (SWINE 84-12), we reported that pigs which had grown slowly from 50 to 115 lb continued to grow slower to market weight than their medium or fast growing counterparts. It was also found that the addition of a growth promoting level of an antibiotic failed to increase performance of the slow growing pigs. The study reported herein is a repeat of the previous study to verify the results.
The Effect Of Pen Space And Vitamin C Addition To The Diet On Weanling Pig Performance, G. W. Libal, D. A. Jensen, R. C. Wahlstrom
The Effect Of Pen Space And Vitamin C Addition To The Diet On Weanling Pig Performance, G. W. Libal, D. A. Jensen, R. C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1985
It is assumed that there is no dietary requirement for vitamin C by the pig. However, recently there has been some indication that, under certain conditions, vitamin C or ascorbic acid may boost pig performance. Vitamin C is involved in development of the immune response. Therefore, if a requirement for dietary vitamin C exists, it should be demonstrated with pigs under stressed conditions. The study reported in this paper is a part of a cooperative project by the NCR-89 Committee on Confinement Management of Swine. It is designed to evaluate the response of weaned pigs to a vitamin C addition …
Comparison Of Sow And Gilt Performance As Affected By Gestation Energy Intake, G. W. Libal, M. K. Hoppe, R. C. Wahlstrom
Comparison Of Sow And Gilt Performance As Affected By Gestation Energy Intake, G. W. Libal, M. K. Hoppe, R. C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Gestation energy needs of sows include maintenance as well as tissue growth associated with pregnancy and fetal development. Gilts have the additional demands of body tissue growth but less maintenance needs because of smaller body size. Differences in total daily energy needs between sows and gilts have not been resolved. Results of three trials conducted to compare energy needs for specific gestation gains for sows and gilts were reported last year (Swine 84-10). These results suggested the need for approximately 870 Kcal of additional metabolizable energy (ME) (.6 lb of feed) for gilts with the desired gains of .5 lb/day …
The Effect Of Protein Level And Amino Acid Supplementation Of Sunflower Meal Diets For Young Pigs, B. S. Borg, G. W. Libal, R. C. Wahlstrom
The Effect Of Protein Level And Amino Acid Supplementation Of Sunflower Meal Diets For Young Pigs, B. S. Borg, G. W. Libal, R. C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Dietary protein recommendations for pigs were developed using corn-soybean meal diets. Diets formulated to contain less protein than recommended will result in reduced performance because of a deficiency of amino acid(s). However, more recent research suggests that pig performance can be maintained when feeding diets containing a substantially reduced protein content if limiting amino acids are supplemented to meet dietary requirements. Previous research at South Dakota State University has identified lysine, tryptophan and threonine as deficient amino acids in a 12% protein, corn-sunflower meal diet. The objectives of the trial reported herein were to study the effect of protein level …
Effect Of Protein Level, Lysine And Oats In Diets For Growing-Finishing Pigs, R. C. Wahlstrom, B. S. Sorg, G. W. Libal
Effect Of Protein Level, Lysine And Oats In Diets For Growing-Finishing Pigs, R. C. Wahlstrom, B. S. Sorg, G. W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Previous research has shown that the protein content of swine diets can be reduced approximately two percent if the diet is supplemented with lysine and if the diet is not deficient in other amino acids. Corn-soybean meal diets that are reduced more than two percent in protein may become deficient in the amino acid tryptophan. Oats contains more lysine and tryptophan but less energy than corn. However, dietary levels of 20 to 30% oats have generally not affected pig performance. The objectives of this experiment were to evaluate the protein and lysine needs of growing-finishing pigs and to determine the …
Twenty-Ninth Annual Swine Day, Animal Science Department
Twenty-Ninth Annual Swine Day, Animal Science Department
South Dakota Swine Field Day Proceedings and Research Reports, 1985
These are the complete proceedings of the twenty-ninth annual South Dakota Swine Field Day held on November 21, 1985 at South Dakota State University.
A New Pricing Alternative For Hog Producers -- Options, Gene E. Murra
A New Pricing Alternative For Hog Producers -- Options, Gene E. Murra
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Hog producers have four basic methods which they can use to price their hogs -- the cash market, contracting for future delivery, the futures market and the options market. Although the principal objective of this presentation is to discuss the options market, the other pricing alternatives are discussed briefly so that comparisons can be made.
Non-Mechanical Ventilation Of Swine Facilities, Gerald R. Bodman
Non-Mechanical Ventilation Of Swine Facilities, Gerald R. Bodman
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Swine facilities must be ventilated to control heat, moisture, dust, odors, pathogenic organisms and irritating, noxious or toxic gases. Our goal is to provide healthful conditions for animals and personnel and to control deterioriation of structural components and equipment. Given the widely varying climatic conditions of the central and northern plains states there is no system capable of fully satisfying all desirable aspects of a ventilation system. Consequetly, producers must select the system which best fits their management abilities and goals with the most acceptable set of compromises.
Nebraska's Mof And Solar Heated Farrowing Houses, Gerald R. Bodman
Nebraska's Mof And Solar Heated Farrowing Houses, Gerald R. Bodman
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Successful operation of multiple Nebraska solar-heated modified-open-front (MOF) nursery/grower buildings led two producers to investigate use of the monoslope Nebraska MOF style building for farrowing. (The first Nebraska solar-heated MOF nursery/grower unit has been in continuous operation since October 1979.) Both units began operation in August 1984.
Effect Of Tryptophan Supplementation Of A Low Protein, Corn-Sunflower Meal Diet For Young Growing Pigs, B. S. Borg, G. W. Libal, R. C. Wahlstrom
Effect Of Tryptophan Supplementation Of A Low Protein, Corn-Sunflower Meal Diet For Young Growing Pigs, B. S. Borg, G. W. Libal, R. C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Research conducted at South Dakota State University and reported in the 1983 and 1984 Swine Field Day Proceedings, indicated that the amino acid tryptophan is limiting in a lysine supplemented, 12% protein, corn-sunflower meal diet fed to young weaned pigs. This trial was conducted to further study the effects of tryptophan supplementation of an amino acid fortified, 12% protein, corn-sunflower meal diet and to estimate the dietary tryptophan requirement of the young weaned pig fed that diet.
Effect Of Threonine Supplementation Of A Low Protein, Corn-Sunflower Meal Diet For Young Growing Pigs, B. S. Borg, G. W. Libal, R. C. Wahlstrom
Effect Of Threonine Supplementation Of A Low Protein, Corn-Sunflower Meal Diet For Young Growing Pigs, B. S. Borg, G. W. Libal, R. C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Of the ten essential amino acids required by swine, lysine, tryptophan and threonine have been reported by many researchers as being the first three limiting amino acids in cereal based swine diets. Research reported in the 1984 Swine Field Day Proceedings suggested supplementation of threonine to an amino acid fortified, low protein, corn-sunflower meal diet improves weanling pig performance.
This trial was conducted as a continuation of the study of the effects of threonine supplementation an amino acid fortified, low protein, corn-sunflower meal diet and to estimate the dietary requirement of threonine of young growing pigs.
Nutrient Analysis Of South Dakota Swine Feeds, C. Ross Hamilton
Nutrient Analysis Of South Dakota Swine Feeds, C. Ross Hamilton
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Current economical conditions-have forced swine producers to utilize available resources efficiently to reduce production cost. A major portion of the production cost in most swine enterprises may be attributed to obtaining, handling and processing feeds. Grains are utilized as a source of dietary energy and constitute a major portion of swine diets. Thus, the practice of evaluating all feed grains available in a given geographic area to determine the grains providing the most economical gains other than feeding only those grains raised by the individual producer is expected to increase. Producers must understand how grains differ in their nutritional and …
Response Of Finishing Pigs With Different Rates Of Prior Performance To Antimicrobials Fed At Growth Promoting Or Therapeutic Levels, C. R. Hamilton, G. W. Libal, R. C. Wahlstrom, R. Hansen
Response Of Finishing Pigs With Different Rates Of Prior Performance To Antimicrobials Fed At Growth Promoting Or Therapeutic Levels, C. R. Hamilton, G. W. Libal, R. C. Wahlstrom, R. Hansen
South Dakota Swine Field Day Proceedings and Research Reports, 1985
Previous work conducted at· this station has involved sorting pigs according to prior performance during the grower period into uniform groups for the finishing period. Results of these studies suggest that pigs having slow previous growth rates continued to grow more slowly than pigs with fast or intermediate prior growth rates. Further, the use of growth promoting levels of antimicrobials appeared to stimulate the performance of pigs having fast and intermediate growth rates without a similar improvement in the performance of slow growing pigs. Therapeutic levels of antimicrobials were observed to improve average daily gains in a study utilizing slow …
Oats For Growing-Finishing Swine, R. C. Wahlstrom, G. W. Libal
Oats For Growing-Finishing Swine, R. C. Wahlstrom, G. W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1985
South Dakota has the distinction of ranking first in production of oats by states in the United States. Thus, there is a considerable amount of oats available for livestock feeding in South Dakota. Oats is higher in fiber and lower in energy than other cereal grains. The amount of oats that may be included in diets for growing-finishing swine without affecting performance is in the range of 20 to 50%, depending on the variety and quality of the oats. Research has also shown that pigs utilize fiber better in cold temperature than in warm temperatures.
The objective of this experiment …