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Evaluation Of One Or Two Lutalyse Injections For Estrous Synchronization In Beef Cattle, H. L. Miller, L. C. Blome

South Dakota Cow-Calf Field Day Proceedings, 1982

Researchers have been attempting to control estrous cycles in animals for the last 50 years. For the past several years, there has been considerable interest in the use of Lutalyse for estrous synchronization in beef cattle. For synchronization and artificial insemination to be successful, quality management and nutrition programs must be utilized. Some individual reports have indicated low reproductive performance can be accounted for by noncycling cows, poor management and semen handling techniques efficiency.
This study includes data from the 1980, 1981 and 1982 breeding seasons using Lutalyse to synchronize estrous in beef cattle. The purpose of this research was …

The Centennial Of South Dakota State University 1881 - 1981: Departmental Histories, South Dakota State University

State, University and Departmental Histories

This document contains College and Departmental histories from 1881 to 1981.It also contains documentation of programs and events held in 1981 to commemorate the South Dakota State University Centennial.

Aquatic Plant Communities And Invertebrates In A Prairie Pothole During Duck Brood Rearing, Jeffrey W. Mccrady

Electronic Theses and Dissertations

More than 1,100 samples of aquatic plants and associated invertebrates were collected in a prairie wetland. Sampling was done weekly throughout the duck brood rearing season. Linear regression revealed a 4 to 100 ratio of animal to plant biomass (R²=0.488). Comparatively high degrees of association were found between Ceratophyllum demersum and Gastropoda and between Lemna minor and most zooplankton groups. Significant sources of variation in invertebrate biomass were plant communities, date, plants, and community by date interaction. Depth and communities were not significant.

Movements And Habitats Of Brood-Rearing Wood Ducks On A Prairie River, Randy L. Smith

Electronic Theses and Dissertations

Radio telemetry and brood surveys were used to evaluate wood duck (Aix sponsa) brood habitat and movements along 40 km of the Big Sioux River in eastern South Dakota during 1979-81. Most of the oxbows and nearby wetlands in the study area contained water in 1979-80, but drought dried all but 2 of the 33 oxbows in 1981. Fourteen brood hens were radio monitored. In 1980, 4 hens utilized oxbows, 1 hen utilized the river, and 2 hens used other habitats for brood rearing. In 1981, 4 hens utilized oxbows, 2 hens utilized the river, and 1 hen utilized the …

Growth Hormone Variability And Its Predictive Value In Beef Females, Thomas W. Lingscheit

Electronic Theses and Dissertations

Endocrine influence on metabolism determines the rate and extent of growth of an animal. A thorough understanding of hormones and their influence is necessary to the meat animal industry for advancement of efficient production to supply a growing world demand for food. Many hormones affect metabolism, but growth hormone (GH) appears to have one of the smallest fluctuations in circulating levels. Previous research indicates nonsignificant changes in plasma growth hormone (GH) due to season, circadian rhythm or level of nutrient intake. Factors that have been identified a s influencing GH level are sex, age, roughage content of the diet, breed, …

The Response Of The Face Fly (Musca Automnalis) To Seasonal Changes In Manure Quality, Timothy James Lysyk

Electronic Theses and Dissertations

The face fly is a major pest of cattle in East Central South Dakota. The female fly feeds on the faces of cattle and lays eggs in freshly deposited manure. Preference is shown for the manure of animals fed grass. The egg and larval stages are spent in the manure, and the mature larvae migrate to the surrounding substrate to pupate. While in the pats, the face fly stages present have been shown to be sensitive to a number of physical, chemical and biotic factors. The manure pat acts as both a source of food and as a habitat for …

A Short-Run Economic Analysis Of Some Factors Influencing The Supply Of Beef-Cattle At Auctions In South-Eastern Botswana, 1976-1980, Kene Patrick Cyril Sinombe

Electronic Theses and Dissertations

Auction sales provide a major cattle marketing outlet for farmers in Botswana. There were 5,740 cattle auctioned in the South-eastern part of Botswana in 1976. This number represented 16% of the total export off-take from the area. The main market outlet for slaughter beef is through direct marketing of cattle to the Botswana Meat Commission (BMC) abattoir. The BMC, an export monopoly beef marketing board, sets prices and cattle buyers country-wide adjust them to derive producer prices, because they finally sell cattle to the BMC. The BMC price plays a major role in deriving producer prices at auction sales yards. …

Composition, Biomass, And Protein Content Of A Lemna Trisulca L., Invertebrate Community In A Prairie Wetland, Linda J. Meyers

Electronic Theses and Dissertations

Samples of star duckweed (Lemna trisulca L.) were collected from a South Dakota prairie wetland during the summer 1981. Amphipods and gastropods were the dominant macroinvertebrates found within samples of duckweed in terms of biomass and density. Cladocera were the dominant microinvertebrates found in association with star duckweed. Significant variability was found in the biomass and densities of specific invertebrates with respect to sampling dates. Crude protein values of star duckweed-invertebrate community samples ranged from 7.6 to 18.5% and were found to correlate significantly with protein levels of the duckweed. Crude protein values for star duckweed ranged from 7.1 to …

Culture Of Channel Catfish In East-Central South Dakota Dugout Ponds, Martin Nicholas Dilauro

Electronic Theses and Dissertations

Twenty dugout ponds in east-central South Dakota were stocked 10 May 1980 with fingerling (mean weight 39.4 g, mean total length 108.4 mm) channel catfish (Ictalurus punctatus) at stocking rates of 309, 618, 1,235, and 1,853 fish/ha. Supplemental food was provided in 16 ponds (four at each stocking rate) at a rate of 4% body weight every other day. Fish in four ponds stocked, one at each of the respective stocking rates were not fed. Eleven of the 16 ponds which received feed were considered fit for analysis at the end of the study period, 27 September 1980. Two of …

Survival, Growth, Food Selection, And Alimentary Canal Development Of Intensively Reared Walleyes And Yellow Perch, Gregg Alan Raisanen

Electronic Theses and Dissertations

Five genera of invertebrates, collected from a municipal sewage lagoon, were fed to newly hatched larval walleyes, (Stizostedion vitreun vitreun), and yellow perch, (Perca flavescens), to document survival, growth, food selection, and alimentary canal development of these fishes. Mean survival of walleyes for the 18 day period after hatching was 14.1%: mean unaccountable mortality was 43.5%. Forty-three percent of the walleyes remaining after 18 days survived an additional 32 days; mean unaccountable mortality was 33.8%. Mean daily length gain over the 50 day period was 0.8 mm/day. The cladoceran, Moina brachiate, was selected for by walleyes and yellow perch; the …

Whey-Caseinate Blends And Lactose Hydrolysis In Yogurt Manufacture, Catherine A. Whalen

Electronic Theses and Dissertations

Yogurt is a highly nutritious cultured dairy product which has been consumed for centuries, particularly in Eastern Europe. Although per capita consumption in the United. States is still far below that of most European countries; yogurt sales in the U.S.A. have increased phenomenally during the past three decades. Yogurt sales in the U.S.A. totaled 7.7 million kg in 1955; 31.8 million kg in 1966; and approximately 227 million kg by 1976 (41). Per capita sales increased 211% from 1970 to 1980 (45). Yogurt is generally manufactured from milk or lowfat milk which has been fortified with extra milk solids. Nonfat …

Feeding Value Of High Starch And High Fat Rations For Dairy Calves, G. Duff Stewart

Electronic Theses and Dissertations

Sixty-four Holstein calves were used in a 3 x 2 factorial experiment of 12 wk to evaluate growth performance when fed control, high starch, and high fat pelleted diets separately or with a supplemental concentrate mix offered the first 6 wk. High starch and high fat diets were formulated to .contain more digestible energy than the control diet. Calves received milk the first 5 wk, plus one of the above rations ad libitum wk 1 thru 12. The control diet contained corn, oats, and soybean meal; the high starch diet contained corn and soybean meal; while the high fat diet …

Use Of Dry Whey And Lactose Hydrolysis In Yogurt Bases, Nagendra P. Shah

Electronic Theses and Dissertations

Yogurt is one of the oldest and most traditional fermented dairy products. Since early times it has been an important food item of the people in the Middle East. Except for its refreshing taste and wholesomeness as a food, no special virtues were claimed for it until early in the 20th century when the bacteriologist, Elie Metchnikoff, who shared a Nobel Prize in 1908, concluded from his studies on the effect of lactic acid bacteria of the digestive tract, that yogurt arrests putrefaction in the intestinal tract and thus might be beneficial to health (55). Attempts to popularize yogurt in …

Savory Grazing System: A Research Update, L. S. Bilger, J. K. Lewis, D. M. Engle, T. Weber

South Dakota Cow-Calf Field Day Proceedings, 1982

Livestock performance, forage use and soil compaction were studied in Repeated Seasonal (RSG) and High Performance Short Duration Grazing (HPSDG) systems on mixed prairie in good to excellent condition in western South Dakota. In May 1981 and 1982, yearling ewes were allocated to six RSG and six HPSDG pastures and removed in October of each year. Stocking rates in both systems were periodically adjusted to result in 40 to 50% terminal use of shortgrasses. In both years, the stocking rates in HPSDG were approximately twice those in RSG. Livestock performance was the same in both systems. Forage use was more …

South Dakota State University Graduation Exercises, December 12, 1981, Brookings, South Dakota, South Dakota State University

Commencement Programs

Please be advised that the individuals listed in the program do not constitute an official confirmation of meeting the graduation requirements. Serving as honorary marshals for the Fall 1981 Graduation Exercises are Emory E. Johnson, Professor Emeritus of Civil Engineering, and Perry W. Williams, Professor Emeritus of Physics. The commencement address, titled "Uncertainty - A Friend," will be delivered by Dorothy J. Cline, Associate Professor of Journalism. Dr. Harold S. Bailey, Jr., Vice President for Academic Affairs, will acknowledge student honors. The commissioning of Air Force and Army officers will be conducted by Col. Charles Lehman and Lt. Col. Patrick …

Thirteenth Annual Poultry Field Day, Animal Science Department

South Dakota Poultry Field Day Proceedings and Research Reports, 1981

These are the complete proceedings of the thirteenth annual Poultry Field Day held on November 5th, 1981 at Sioux Falls, SD.

Agnet Computer Analysis Of Poultry Feeds, P. E. Plumart, C. W. Carlson

South Dakota Poultry Field Day Proceedings and Research Reports, 1981

AGNET was originally a pilot project funded by the Old West Regional Commission to extend the AGricultural computer NETwork developed in Nebraska to South Dakota, North Dakota, Montana and Wyoming. The states of Washington and Wisconsin joined AGNET in 1980. Pooling the resources of seven states makes programs from the other states available to South Dakotans.

Some Effects Of Different Levels Of Distillers Dried Grain With Solubles And Oats On Fatty Liver Hemorrhagic Syndrome, C. C. Rakshit, C. W. Carlson

South Dakota Poultry Field Day Proceedings and Research Reports, 1981

The recent view regarding the etiology of Fatty Liver Hemorrhagic Syndrome (FLHS) is that it is supposed to be nutritional in origin. Previous research at Georgia had shown that a fermentation by-product added to a layer diet helped to reduce the incidence of FLHS. At this station, oats have been shown to contain some protective factor against FLHS.

Management And Nutrition Factors Affecting Egg Quality, William J. Owings

South Dakota Poultry Field Day Proceedings and Research Reports, 1981

A wide range of physical and chemical properties make up total egg quality. They include exterior quality or shell quality and interior quality such as albumen firmness, freedom from blood spots and mottled yolks. Yolk quality involves color or pigmentation. Egg size may also be associated with egg quality in some cases.

Sdsu Collegian, November 4, 1981, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 90, No. 10

Sdsu Collegian, October 28, 1981, Student Association South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 90, No. 9

Lending A Hand: Cooperative Extension Service 1981 Annual Report, Cooperative Extension Service

SDSU Extension Special Series

Your South Dakota Cooperative Extension Service is the non-formal educational arm of our Land Grant University, South Dakota State University. Extension provides educational assistance to farmers, ranchers, homemakers, youth, and community leaders-a function which has continued in South Dakota through about four generations. Extension has built-in characteristics which assure its response to both local needs and those of al

Family Cash-Flow Forecasting, Alverda Lynch

SDSU Extension Circulars

This publication provides information on forecasting future spending and comparing it with available income to enable families to manage their finances to cope better with inflation. It includes worksheets and directions to establish goals, as well as calculate income and fixed expenses, monthly cash flow, flexible living expenses, and net gain or loss.

South Dakota Farm And Home Research (Fall 1981), South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

This issue contains the 94th South Dakota Agricultural Experiment Station Annual Report. This report covers July 1, 1980 - June 30, 1981.

Director’s Comment [p] 2 “what price on comfort and beauty and vegetable gardens? What price on a windbreak? You might be surprised “
Honor to a sorghum scientist [P] 3 “ sorghum growing in South Dakota changed direction forever after Cliff Franzke’s remarkable discoveries in breeding plots“
Shut down? No way! [p] 5 “ Even if demand for fuels alcohol is at ‘simmer,’ SDSU’s plant is alive and brewing, ready for next go-round”
Fighting vandalism [p] 10 “Lighting, …

Sdsu Collegian, September 23, 1981, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 90, No. 4

Framework For Examining The Economic Feasibility Of Small Scale Alcohol Plants, Thomas Dobbs, Randy Hoffman, Ardelle Lundeen

Economics Staff Paper Series (1969 - 2017)

The feasibility of producing fuel alcohol from grain has received much attention from the Midwest and Plains States over the last few years. There has been interest in plants ranging from quite small on farm stills to very large, fuel-feed complexes costing many millions of dollars. As a result of this interest, several studies of the economic feasibility of large-scale fuel alcohol plants were conducted and published in the late 1970. More recently, a few studies of the economics of smaller-scale plants have been initiated, and some of the results are now beginning to appear in print (Hutchinson and Dobbs; …

Controlling Aphids On Small Grain, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

The three most important aphids on small grain in South Dakota are the greenbug, the oat-bird cherry aphid, and the English grain aphid. Any of these aphids may cause serious economic loss as a direct result of their feeding. They may also carry barley yellow dwarf virus, and thus be indirectly responsible for severe stunting of plants and sharply reduced yields.

Nutrition: Vitamins And Minerals, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

This publication provides information on the nutritional value of vitamins and minerals. Their value for building blood, bones, nerve and muscle functioning, and providing energy to cells is explained. Also included is information on vitamin myths and recommended daily allowances.

Sdsu Collegian, April 29, 1981, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 89, No. 31

Food Facts And Fancies, William Kohlmeyer

Economics Commentator (1972- 2016)

No abstract provided.