Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

South Dakota State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 4921 - 4950 of 8049

Full-Text Articles in Entire DC Network

Effects Of Manganese Chloride On Blood Formation In Rabbits, Donald Wayne Kerr Jan 1975

Effects Of Manganese Chloride On Blood Formation In Rabbits, Donald Wayne Kerr

Electronic Theses and Dissertations

The objectives of these investigations were to determine the effect of manganese on the following: red and white blood cell counts, differential counts, packed cell volume, hemoglobin, reticulocyte composition, and manganese and iron determinations in respect to possible changes in these measurements with prolonged exposure to manganese.

Go to article

Factors Affecting Efficiency To Weaning In Angus, Charolais, And Reciprocal Cross Cows, Douglas A. Marshall Jan 1975

Factors Affecting Efficiency To Weaning In Angus, Charolais, And Reciprocal Cross Cows, Douglas A. Marshall

Electronic Theses and Dissertations

The purpose of this study was to gain understanding of the variables affecting efficiency of cows and production of their calves to weaning. Specific effects of cow size, condition and milk production on efficiency were examined along with reproductive performance of the experimental females to determine net weaning efficiency. An attempt was also made to examine traits that could be used in practical situations to detect differences in cow efficiency. Considerable research has been conducted to evaluate post weaning efficiency of nutrient utilization, but due to expense and time requirements individual feeding of cows and their progeny has been limited. …

Go to article

Biologic Properties Of Midwestern Isolates Of Pseudorabies, Pamela F. Leslie Jan 1975

Biologic Properties Of Midwestern Isolates Of Pseudorabies, Pamela F. Leslie

Electronic Theses and Dissertations

Previously, pseudorabies was not considered to be a problem in the midwest but prevalence of the disease has increased over the last five years. In 1974 along, eight isolations of pseudorabies virus were made at the South Dakota Animal Disease Research and Diagnostic Laboratory from outbreaks in the area of northwest Iowa, Nebraska, and South Dakota. As of February1, 1975, here isolations of pseudorabies virus have been made from outbreaks in the area. Iowa State Diagnostic Laboratory reported a six-fold increase in pseudorabies cases in 197 as compared to the preceding four years (5). A survey of swine in Indiana …

Go to article

Metabolic Studies Of 2, 2', ³⁶4, ³⁶4', 5, 5'-Hexachlorobiphenyl In Guinea Pigs, Margaret Ann Pearson Jan 1975

Metabolic Studies Of 2, 2', ³⁶4, ³⁶4', 5, 5'-Hexachlorobiphenyl In Guinea Pigs, Margaret Ann Pearson

Electronic Theses and Dissertations

This study was carried out to investigate the metabolism 2, 21, 4, 41, 5, 51 – Hexachlorobiphenyl (C16-PCB). This isomer is a major containing more than 50% weight-to-weight (w/w) chlorine.1 To investigate this isomer, we obtained it in 36C1 labeled and non-labeled forms. We developed procedures to isolate and purify both forms of the hexachlorobiphenyl for further study. The 36C1 labeled biphenyl was then introduced into test animals for metabolic studies.

Go to article

Salmonella Detection By Coulter Counter Volume Displacement Using Specific Antibody Coated Latex, Gita Chandulal Parikh Jan 1975

Salmonella Detection By Coulter Counter Volume Displacement Using Specific Antibody Coated Latex, Gita Chandulal Parikh

Electronic Theses and Dissertations

The present study was designed to determine whether this Coulter Counter for detection of Salmonella typhimurium cells. The latex particles are coated with a specific antiserum which reacts with the particulate antigen, Salmonella cells. An increase in the volume of latex antibody and Salmonella cells is detected by the Coulter Counter data and a teletype to plot the data shortens the time consumption. This method also has a potential to be completely automated.

Go to article

Proposed Solid Waste System For Rural Areas Of Brookings County, South Dakota, Arnold A. Putman Jan 1975

Proposed Solid Waste System For Rural Areas Of Brookings County, South Dakota, Arnold A. Putman

Electronic Theses and Dissertations

The State Department of Environmental Protection has stated that its goal is to have all solid waste generated in the State of South Dakota, stored, collected and disposed of in a manner which does not cause environmental degradation, potential health hazards, or nuisances to the citizens of South Dakota or its visitors(1). It is the intent to provide efficient economical solid waste management systems throughout the entire State. In addition to properly managed solid waste disposal sites, it is also desired that efficient, routine collection systems be provided in all communities wherever the population is sufficient to support such a …

Go to article

Pit Ventilation Systems Performance In A Model Swine Building, Stephen H. Pohl Jan 1975

Pit Ventilation Systems Performance In A Model Swine Building, Stephen H. Pohl

Electronic Theses and Dissertations

The evaluation of pit ventilation systems performance by comparing air flow velocities, air currents, and evacuation times is needed to develop the information needed for proper engineering design. Therefore, a research project employing scale models of five pit ventilation systems and employing the principles of similitude and dimensional analysis and initiated with the following objectives: 1) To determine the influence of manure pit ventilation system geometry on air removal from a swine building and 2) To evaluate the effects of pit ventilation system geometry on swine building ventilation characteristics.

Go to article

Criteria For Determining Feasibility Of Rural Water Supply Systems In Livestock Production Areas, Lynn L. Peterson Jan 1975

Criteria For Determining Feasibility Of Rural Water Supply Systems In Livestock Production Areas, Lynn L. Peterson

Electronic Theses and Dissertations

Feasibility guidelines for proposed and existing community rural water supply systems have been developed around such parameters as population density, size of group, and ability to repay. However, these guidelines were based on more densely populate areas where water is used primarily for domestic purposes. These guidelines do not necessarily fit situations where population density is low and water availability enters in as a factor of livestock production. It is apparent that guidelines need to be developed for such situations. With this intention, the objectives of this study were established as follows: 1. Determine what criteria are pertinent to the …

Go to article

Nitrogen Fixation By Selected Native Legumes Of South Dakota, Ronald S. Shave Jan 1975

Nitrogen Fixation By Selected Native Legumes Of South Dakota, Ronald S. Shave

Electronic Theses and Dissertations

The purpose of this study has been to advance knowledge of the nitrogen fixation potential of selected native legumes. With this objective in mind the investigation has been broken down into three segments. 1. Specimens of native legumes were sought on a state wide basis, collected, identified and preserved in a permanent herbarium. 2. Native legumes which showed good nodulation were evaluated for nitrogen fixing potential. 3. The microsymbiont was isolated from the nodules of selected native legumes and cultured.

Go to article

Computer Simulation Of Western Equine Encephalitis Virus Transmission To Horses In South Dakota By The Culex Tarsalis Mosquito, Richard Frank Schryer Jan 1975

Computer Simulation Of Western Equine Encephalitis Virus Transmission To Horses In South Dakota By The Culex Tarsalis Mosquito, Richard Frank Schryer

Electronic Theses and Dissertations

This research is an attempt to develop a computer simulation model that will be capable of illustrating the effect of various factors on the outcome of a simulated equine encephalitis epidemic. It is intended that through computer simulation techniques, I will become possible to better understand the factors that contribute to or reduce the magnitude gained of an encephalitis epidemic in horses. Subsequently, the knowledge gained by computer simulation could provide the groundwork for the development of a model that will be capable of projecting the likelihood of an epidemic based on mosquito populations and WEE infection rates as they …

Go to article

The Infiltration Of A Lagoon Effluent For Final Waste Treatment, William B. Sherman Jan 1975

The Infiltration Of A Lagoon Effluent For Final Waste Treatment, William B. Sherman

Electronic Theses and Dissertations

The study and literature herein described was instituted for the purpose of examining the application of the stabilization pond effluent at Madison, South Dakota, to a soil type present in that area. The literature emphasized the importance of investigating the soil and water at each location because of variations witnessed in nearly every land application system that has been studied. With much assistance from officials of Madison, South Dakota, a lysimeter study was performed at the Madison lagoon by passing stabilization pond effluent through local soil,, collecting the resultant water to measure the rate of infiltration and analyzing the resultant …

Go to article

Supplementation Of Opaque-2 And Normal Corn With Lysine And Tryptophan For Finishing Swine, John G. Volz Jan 1975

Supplementation Of Opaque-2 And Normal Corn With Lysine And Tryptophan For Finishing Swine, John G. Volz

Electronic Theses and Dissertations

The Purpose of the research reported herein was to further investigate the adequacy of normal and opaque-2 corn as sources of lysine and tryptophan for finishing swine. The criteria used to measure the value of these two amino acids were growth performance, plasma-free amino acids and carcass data.

Go to article

Encephalitis Epidemiology In South Dakota : The Development And Use Of An Encephalitis Simulation Model And A Computerized Human Serum Bank To Determine Western And St. Louis Encephalitis Activity, Curtis Dean Wilson Jan 1975

Encephalitis Epidemiology In South Dakota : The Development And Use Of An Encephalitis Simulation Model And A Computerized Human Serum Bank To Determine Western And St. Louis Encephalitis Activity, Curtis Dean Wilson

Electronic Theses and Dissertations

The investigation reported here represents an attempt to relate a virus vector simulation model with field observations made in South Dakota over the past years. The viruses that will be examined are two encephalitis viruses, western equine encephalitis (WEE) and St. Louis encephalitis (SLE). Since the encephalitis viruses are grouped within the arboviruses, viruses transmitted by an arthropod vector, any epidemiological study of the human and horse encephalitis outbreak process must include a study of the vector, in this case mosquitoes, and the factors affecting that vector. It is this complex relationship of virus, vector and hosts that led those …

Go to article

Amino Acid Additions To A Low Protein Corn-Soy Diet For Egg Production, Ali Baghaye Kashani Jan 1975

Amino Acid Additions To A Low Protein Corn-Soy Diet For Egg Production, Ali Baghaye Kashani

Electronic Theses and Dissertations

The present study was conducted to determine if the protein level of layer diets could be lowered from the: commonly used 16 percent to 12 percent by supplementation of some of the essential amino acids without reducing the performance of hens. The amino acids used were methionine, lysine, tryptophan and isoleucine. Egg production, egg shell thickness, interior egg quality, body weight, feed efficiency and free amino acid content of the albumen of eggs produced were criteria used to measure the (--) to treatment.

Go to article

Induction Of Parturition In The Ovine, Ernest L. Harman Jan 1975

Induction Of Parturition In The Ovine, Ernest L. Harman

Electronic Theses and Dissertations

The effects of flumethasone and prostaglandin F2 (PGF) on the time of parturition were studied in the ewe. Pregnant ewes with known conception dates were allotted into a 3 x 3 x 2 factorial designed experiment (1973 study) and into a completely random designed experiment (1974 study). In the 1973 study treatments consisted of three hormones (flumethasone, PGF and saline control), three levels (low, .5 mg flumethasone, 5 mg PGF, 1 cc saline; medium, 1.0 mg flumethasone, 10 mg PGF, 2 cc saline; high, 1.5 mg flumethasone, 15 mg PGF, 3 cc saline) and two routes of administration (IM …

Go to article

Prevalence Of Listeria Monocytogenes In A Bovine Associated Environment, Verne D. Brakke Jan 1975

Prevalence Of Listeria Monocytogenes In A Bovine Associated Environment, Verne D. Brakke

Electronic Theses and Dissertations

Listeria monocytogenes has emerged into the realm of disease causing bacteria as a pathogen of public health importance. Its opportunistic and ubiquitous nature has led to an ever increasing number of case reports implicating this organism in human and animal disease. Following its discovery Listeria has been observed in many countries from the tropics to the arctic (6). In addition to human subjects, Listeria has been found with a very wide host range which includes 37 mammals, 17 fowls, ticks, fish, crustaceans, silage, soil, dust, slaughter house waste, stream water, sewage and mud.

Go to article

Chemical Weed Control In Small Grains And Forages, Cooperative Extension South Dakota State University Jan 1975

Chemical Weed Control In Small Grains And Forages, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

This document covers a large number of chemical weed control options across a variety of small grains and forages in South Dakota. This Fact Sheet is designed to provide a summary of herbicide usage options. Chemical options are listed in a table with the following headers: weed name, common chemical name, actual active ingredient rate of application per pound, trade name formulation, rate of product application, product time to spray and additional remarks per chemical and plant type.

Go to article

Alternative Pasture And Forage Systems, Cooperative Extension South Dakota State University Jan 1975

Alternative Pasture And Forage Systems, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Livestock numbers, feed prices and land prices in South Dakota have been increasing annually, but the number of acres available for production of feed and forage has not. Cattle numbers have passed the 5.5 million mark for the first time in 40 years. Feed costs have doubled and, in some cases, tripled in the last year or so. Livestock prices have not increased materially and the livestock producer is in the biggest cost-price squeeze that he has experienced in many years.

Go to article

South Dakota State University 1975-1976 Graduate Study Bulletin, South Dakota State University Jan 1975

South Dakota State University 1975-1976 Graduate Study Bulletin, South Dakota State University

South Dakota State University Catalogs and Bulletins: 1935 to present

No abstract provided.

Go to article

Ridge Vent And Wind Direction Effects On Airflow Characteristics In A Model Open Front Beef Building, Robert K. Egan Jan 1975

Ridge Vent And Wind Direction Effects On Airflow Characteristics In A Model Open Front Beef Building, Robert K. Egan

Electronic Theses and Dissertations

Ridge vent design and building orientation with respect to predominating winds are two primary factors influencing the effectiveness of natural ventilation. Research concerning ridge vent design and building orientation as a means of optimizing natural ventilation is inconclusive and incomplete. Therefore, a model study was conducted to study ventilation characteristics of a model open front beef confinement unit with the following objective: 1) Evaluate the effects of ridge vent design and wind direction on air flow characteristics and temperature in a model of an open front beef building. 2) Develop prediction equations for the relationship between wind velocity and outlet …

Go to article

Soil Salinity, Sodium Levels, And Corn Production As Affected By Rates Of Applied Beef Wastes, James L. Halbeisen Jan 1975

Soil Salinity, Sodium Levels, And Corn Production As Affected By Rates Of Applied Beef Wastes, James L. Halbeisen

Electronic Theses and Dissertations

In order to establish relationships between beef waste application rates on the land and its effect on soil, an experiment was conducted at the Southeast South Dakota Experiment Farm. Beef steers were fed to a finished market weight from approximately 200 kg (441 lb) with a typical beef finishing ration which varied only in sodium chloride content among the treatments and spread at various rates on the soil. The objectives of this investigation were: 1) to establish a beef waste application rate on dryland that will permit crop production without excessive salt or sodium accumulation in the soil and 2) …

Go to article

Design, Construction And Testing Of An Animal Operated Device For Coordinated Feeding Of Liquid Supplement And Granular Material To Cattle, David B. Goos Jan 1975

Design, Construction And Testing Of An Animal Operated Device For Coordinated Feeding Of Liquid Supplement And Granular Material To Cattle, David B. Goos

Electronic Theses and Dissertations

The objectives of the project were established as follows: 1. Design, develop, and construct an animal operated device to coordinate the feeding of grain and liquid protein supplement of cattle. 2. Test the operation and performance of the feeding device under laboratory and actual feeding conditions. 3. Investigate individual animal participation in the use of the feeding device. 4. Analyze the economic feasibility of the animal operated device compared with current pasture supplementation systems.

Go to article

Bentonite Or Sodium Bicarbonate In High-Concentrate Lamb Diets, Gerald Bruce Huntington Jan 1975

Bentonite Or Sodium Bicarbonate In High-Concentrate Lamb Diets, Gerald Bruce Huntington

Electronic Theses and Dissertations

A rapid change of ruminants from high-roughage diets, often used in background feeding programs, to high-concentrate diets used in the finishing phase tends to promote various digestive tract disorders. A major change in diets gradually made over a period of 3 to 4 weeks generally allows time for the rumen microflora to become adapted to the new conditions and minimizes digestive problems. However, performance during this period is often unsatisfactory. In the short-term feedlot finishing of ruminants for slaughter, the importance of profitable weight gains during the initial adaptation phase of the feeding period becomes relatively more important. Methods of …

Go to article

Evaluating Net Return In Beef Cow-Calf Enterprises, C. A. Dinkel Jan 1975

Evaluating Net Return In Beef Cow-Calf Enterprises, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1975

Most research reports are directed toward the improvement of only one or a few of the important traits influencing efficiency of beef production. This is brought about because experiments of a given size can only study a limited number of variables at one time. It has become increasingly apparent that the effects of combining these experimental results must be considered in the application of research results on individual ranches. This has led to the concept of systems research and development of decision-making computer programs. These programs can assist the rancher in making such decisions as choice of management tools, choice …

Go to article

Lamb Production Of Finnsheep Crossbred Ewes, A. L. Slyter Jan 1975

Lamb Production Of Finnsheep Crossbred Ewes, A. L. Slyter

South Dakota Sheep Field Day Research Reports, 1975

Opportunities for improving lamb production include increasing the rate of reproduction through a higher number of lambs born per ewe exposed. Importation of Finnsheep to the U.S. in 1968 to 1970 provided an opportunity to evaluate the effect of a litter bearing breed when used in a crossbreeding program with our domestic breeds. Results of studies conducted at South Dakota State University involving Finn crossbred ewes are reported in this paper.

Go to article

The Keys To A Bright Future For Lamb In The Market Place, Al Farrington Jan 1975

The Keys To A Bright Future For Lamb In The Market Place, Al Farrington

South Dakota Sheep Field Day Research Reports, 1975

It is interesting to note that during the past few years livestock products in the United States have enjoyed, for the most part, expanding production. New livestock management systems have played a large part in this growth by implementing such techniques as selection of breeding stock for desired carcass quality, new breeding techniques, new feeding and health systems and expanded marketing and merchandising efforts throughout the entire marketing structure.

Go to article

Maximizing Reproductive Efficiency In The Cow Herd, W. R. Parker Jan 1975

Maximizing Reproductive Efficiency In The Cow Herd, W. R. Parker

South Dakota Cow-Calf Field Day Proceedings, 1975

Maximum reproductive efficiency in a cow herd will not often be achieved accidentally. Every producer must set for himself a goal of the level of reproductive efficiency that he desires to achieve in his herd. A goal that I believe is realistic for South Dakota cattle producers is to have 95 to 100% of his cow herd calve every 12 months and wean a 500 to 600 pound calf. Whatever the goal is, it seldom will be achieved by chance alone. We can't "hope" a group of heifers into reaching puberty by 14 months of age, we can't hope 95% …

Go to article

Free Will And Destiny In Chaucer, Irvine Lee Patten Jan 1975

Free Will And Destiny In Chaucer, Irvine Lee Patten

Electronic Theses and Dissertations

This short comparison of a very old and a very new philosophy has been by way of introduction to my own topic, in a study which I hope will demonstrate some important aspects of how we have examined the extent of own responsibility in shaping our fate. My focus will be on the late Middle Ages and specifically on three of Chaucer’s works as they are borrowed in plot and character from Boccaccio, and how they are reworked to show the importance of moral self-determination. These works are Troilus and Creseyda, The Knight’s Tale, and The Monk’s Tale as they …

Go to article

Crop Residue Utilization By Beef Cows, J. A. Minyard Jan 1975

Crop Residue Utilization By Beef Cows, J. A. Minyard

South Dakota Cow-Calf Field Day Proceedings, 1975

Costs associated with beef cow-calf production and particularly the high cost of meeting nutritional requirements of beef cows dictate efficient use of all available feeds. Crop residues can be an important and economical source of feed for beef cows in many South Dakota beef operations. Corn, milo, small grain and soybean residues are those most commonly available.

Go to article

Zeranol Implants For Feedlot Lambs, L. B. Embry, W. S. Swan Jan 1975

Zeranol Implants For Feedlot Lambs, L. B. Embry, W. S. Swan

South Dakota Sheep Field Day Research Reports, 1975

The objectives of two experiments reported here were to determine the value of reimplanting feedlot lambs with zeranol 40 or more days prior to slaughter.

Go to article

First Prev Next Last