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Alteration Of The Anestrous Period In Targhee Ewes, A. L. Slyter, C. C. Moser

South Dakota Sheep Field Day Proceedings and Research Reports, 1981

Induction of fertile mating during summer anestrous in the ewe would aid in spreading the peak supply of lambs over a longer period of time. This should aid many facets of the industry. The effects of alteration of the natural light and dark ratios during the summer months on breeding results were evaluated. Extending day length to 16 hours starting July 4 appeared somewhat beneficial. Results of several light : dark regimes alone or in combination with ormone treatments are reported.

Agnet: A Computer Service At Your Fingertips, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

ACNET is a management tool that can help analyze many alternatives with rapid and accurate computational efficiency, using the assistance of Extension and research specialists from seven states.

Plant Science : Agronomy, Plant Pathology, Entomology At South Dakota State University : A Centennial Report, Lyle A. Derscheid

State, University and Departmental Histories

Subject Headings:
South Dakota State University. Plant Science Department -- History South Dakota State University -- History Agricultural education -- South Dakota -- Brookings -- History Agriculture -- Research -- South Dakota -- History Agronomy -- Research -- South Dakota -- History Plant diseases -- Research -- South Dakota -- History Entomology -- Research -- South Dakota -- History Agriculturists -- South Dakota -- Biography Botanists -- South Dakota -- Biography

Reduced Tillage, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

As energy prices continue to increase more farmers will consider reducing the number of their tillage operations to hold down production costs.

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Money in the bank [p] 3 “Soil analysis –it’s basic. The Soil Lab provides the services for your minimum effort, your maximum profit”
Cottonwood [p] 7 “scientists enthusiastic about research with potential to double range carrying capacity”
Measuring biomass [p] 11 “developing new instruments and techniques could speed research results. Answer ‘down the road’
Manageable shelterbelts [p] 12 “Twin row-high density design promises maximum access, height, and ground level density”
Dawn and Rita [p] 14 “New hard winter wheats show promise for disease resistance and high yield”
Long-term solutions [p] 17 “Success in corn breeding is hard won. Developing population …

Proceedings Of The South Dakota Academy Of Science, 1981, Volume 60., South Dakota Academy Of Science

Proceedings of the South Dakota Academy of Science

Proceedings of the South Dakota Academy of Science, 1981, Volume 60.

The table of contents lists the minutes of the sixty-sixth annual meeting of the South Dakota Academy of Science, which includes committee reports and the treasurer’s report, membership lists, research papers, abstracts, Junior Academy award winners, and papers published by title only.

The presidential address titled Science – The South Dakota Diamond Mine was given by Harry G. Hecht.

The following senior research papers were presented at the sixty-sixth annual meeting held on April 24, 1981: Effects of the Lethal Yellow Gene (Ay) on Reproductive Performance in Strain C57BL/6J …

Home Range, Home Range Expansion, Dispersal, And Mortality Of Juvenile Red Foxes In Southeastern South Dakota, Floyd M. Demaray

Electronic Theses and Dissertations

Data from aerial and landowner surveys showed that red fox (Vulpes vulpes) families on the Sinai study area decreased from 13 (5.2 per township) in 1976 to 11 (4.4 per township) in 1977. The majority (88%) of the active red fox dens was located in pastures and idle lands although these cover types constituted only 24% of the available cover. Twenty-nine juveniles and 3 adults were captured and marked during spring, 1976. Trappers and hunters returned 62% of the tags placed on juvenile foxes. During spring, 1977, 15 juveniles and 2 adult red foxes were marked. Three juveniles were subsequently …

Woodpecker Nesting Habitat In A Prairie River Woodland, J. Barry Parrish

Electronic Theses and Dissertations

Differences in nest site selection of the common flicker (Colaptes auratus), yellow-bellied sapsucker (Sphyrapicus varius), downy woodpecker (Picoides pubescens), and red-headed woodpecker (Melanerpes erythrocephalus) were studied on the Big Sioux River riparian forest of eastern South Dakota during 1980 and 1981. Nest site preferences were compared using two-group stepwise discriminant analysis. Randomly selected potential nest trees showing no previous signs of cavity excavation were included as control groups. The yellow-bellied sapsucker-red-headed woodpecker function was the most efficient in separating groups because both species had specific nest site preferences. Sapsuckers nested only in live green ash (Fraxinus pennsylvanica), characteristically in park-like …

Hydrolyzed-Lactose Whey And Nonfat Dry Milk In Ice Cream, Mohammed Serajul Islam

Electronic Theses and Dissertations

Sweet dry whey was used to replace 25% and 50% of nonfat dry milk solids in ice cream mix. Forty-five batches experimental and control lots of vanilla ice cream were manufactured. A commercial lactase was used to hydrolyze lactose to over 90% conversion and the lactase was inactivated after hydrolysis. The extent of lactose hydrolysis in the mix was adjusted to 50% or 75% by blending non-hydrolyzed nonfat dry milk and whey solids with hydrolyzed preparations. Extra sweetness of the conversion products permitted reduction of sucrose by 6.25% and 12.5%, respectively, in the 50% and 75% hydrolyzed lactose ice cream …

Lactase Activity In Steers Fed Large Amounts Of Dried Whey, Kenneth J. King

Electronic Theses and Dissertations

Large amounts of dried whole whey (86% of concentrate mix, 60% of total dry matter intake) were fed to four Holstein steers in place of corn and soybean meal in the control diet to evaluate the extent and site of lactose digestion in the ruminant's digestive tract. Diets consisted of 70% of the dry matter as concentrate mix and 30% as corn silage fed ad libitum as a total mixed ration. Weight gains and dry matter intakes were similar for steers fed dried whole whey or control diets. Samples of rumen contents from steers fed dried whole whey contained more …

Chemical Weed Control In Small Grain And Flax 1981, 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 flax in South Dakota for 1981. This Fact Sheet is designed to provide a summary of herbicide usage options. The chemical options are listed in a table, which is broken into the following sections: Oats, “Winter Wheat and Rye,” “Durum, Hard Red Spring Wheat, and Barley,” Flax, “Special Weed Problems,” “No-Till Small Grain,” and “Small Grain.”

The Effects Of Aerosolized Lead On The Immune And Hematopoietic Systems, A. Nuri Ozkan

Electronic Theses and Dissertations

The immunological responsiveness of two groups of mice exposed to 2.5 mg/m3 aerosolized Pb(N03)2 either since birth or for 14 days prior to immunization were compared with mice receiving equivalent quantities Pb(N03)2 (125 ~g/mouse/day) by gastric intubation for 1~ days. Each group was immunized at 5 weeks of age with 108 sheep red blood cells to examine both primary and secondary antibody responses. Lead immunotoxicity was evaluated by comparing total and differential leukocyte counts, cellulose acetate electrophoretic serum profiles, phagocytic index, hemolytic complement activity, hemagglutination antibody titers and organ (lung, thymus, spleen, kidney and liver) to body weight ratios. Atomic …

Jackson County, South Dakota : An Area Study, Jeffrey A. Faunce

Electronic Theses and Dissertations

The term "Geography" has been burdened with countless definitions throughout the development of the discipline. Quite simply, geography is the study of spatial variations on the surface of the earth. Determining how the surface of the earth is divided, and how these divisions should be studied, involves an important concept in Geography. A constant point of conversation for the evolving geographer is the difference between a region and an area. Jackson County is an extremely interesting part of our country. Throughout its history it has been the recipient of various negative descriptions. The Indians called the area "mako sica" meaning …

Dye Marking Of Antibiotics Used In Treatment Of Mastitis, Nancy Fairbank Novak

Electronic Theses and Dissertations

The National Mastitis Council, Inc. defines mastitis as the infection of udder tissues (74). Mastitis is the most costly disease affecting dairy cows; many people do not realize the considerable losses due to mastitis (6). A reasonable estimate of the prevalence of mastitis is 50% of cows infected at any time (62); cows in the average herd contract clinical mastitis 1.5 times per year (74). The minimum antibiotic treatments per case of mastitis is two; with approximately 11 million dairy cows in the United States, the annual minimum number of antibiotic treatments is 33 million. In South Dakota, with nearly …

Relative Merits Of Accelerated Lambing, J. M. Thompson

South Dakota Sheep Field Day Proceedings and Research Reports, 1981

Faced with rising costs of production, it is imperative that sheepmen continually incerease their efficiency of production. In order to do this, the number or total pounds of lamb marketed annually per ewe must be increased. One approach to increasing ewe productivity is accelerated lambing.

Protein Supplementation As Related To Sources Of Protein For Growing-Finishing Lambs, L. F. Palmer, L. F. Palmer, L. B. Embry, R. M. Luther

South Dakota Sheep Field Day Proceedings and Research Reports, 1981

The objective of this study was to evaluate commercially available sources of supplemental protein in diets for growing and finishing lambs. Supplements were selected to differ in protein in diets for growing and finishing lambs. Supplements were selected to differ in protein solubility and amino acid profile and were expected to be degraded at different rates in the rumen to furnish protein post-ruminally varying in dietary and bacterial origin. If the principles concerning these parameters reported by other investigators would be applicable, response in terms of growth and feed utilization would be a measure of the value of the supplements …

Goose Marketing And Production: Characteristics And Problems Of South Dakota's Goose Industry, R. Shane, L. Benning

Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011)

The objectives of this study were to survey South Dakota goose producers and processors to determine:
(1) production and nutritional practices and problems associated with goose raising,
(2) marketing patterns and problems encountered by producers,
(3) future production intentions, and
(4) production cost and revenue data.

The Effects Of Rancid Milk On Cheddar Cheese, Shane Thomas Mcdonald

Electronic Theses and Dissertations

One of the most serious defects .of fluid milk is hydrolytic rancidity. Although not a new problem, recent practices in the dairy industry have increased its incidence. On the farm, the use of pipeline milking and transferring systems, in conjunction with bulk cooling and storage, involves excessive agitation and foaming of the raw milk. Both agitation and foaming enhance the development of rancidity. Additional agitation occurs when milk is pumped into storage silos, and pumped about the plant f or processing. Dairy processing facilities are becoming more centralized. Hence, raw milk must be transported longer distances to the dairy plants. …

Preservative Effects Of Covering And Propionic Acid On Alfalfa Haylage In Bunker Silos, Thomas Jonathan Oelberg

Electronic Theses and Dissertations

The preservation efficiency of covering alfalfa haylage with black plastic (polyethylene) and/or treating haylage with propionic acid was studied in two trials. Experiment 1 was designed to evaluate the influence of both covering and treatment with propionic acid on haylage chemical composition and heifer growth. In experiment 1, prop ionic acid was administered to the haylage at the chopper at 0.02% of the fresh forage weight. Chemical composition and ensiling temperature of the haylage were monitored and animal growth was measured with 16 Holstein heifers. Covered haylage was superior to treated haylage in quality as measured by chemical analyses and …

Pre- And Post-Adaptation Effects Of Buffers In High-Concentrate Lamb Diets, J. K. Ha, R. J. Emerick, L. B. Embry

South Dakota Sheep Field Day Proceedings and Research Reports, 1981

A gradual increase in grain cover a period of 2 to 4 weeks is commonly required before ruminant animals become adapted to high-concentrate diets. Various dietary materials including sodium bicarbonate, sodium betonite, limestone and forage have been indicated as potential adis in the prevention of acidosis during adaptation. Benefits from feeding of these materials following adaptation have been less pronounced or lacking. Objectives of studies reported herein were (1) to investigate the effects of buffers and limited quantitites of alfalfa hay on physiological and rumen fermentation changs occuring in lambs during the early phase of adaptation to high-concentrate diets and …

Lamb Carcass Value, Dan H. Gee

South Dakota Sheep Field Day Proceedings and Research Reports, 1981

The value of a lamb carcass depends upon two factors: (1) the quality of the lean and (2) the quantity of retail cuts the carcass will yield. Both of these value-determining chracteristics are estimated by the USDA quality and USDA yield grades.

Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha

Electronic Theses and Dissertations

Experiments using lambs were conducted to study the effects of buffers or roughages against acidosis occurring during rapid dietary changes. Experiments using rats were conducted to investigate vitamin A and thiamin stability and/or utilization as influenced by bentonite. Incubating rumen fluid in vitro at a pH lower than 6 reduced volatile fatty acid (VFA) production and increased lactate accumulation. Limestone or bentonite at levels of 2% in 92% concentrate diets had little effect on feed intake or rumen and blood parameters during a 7-day treatment period using rumen-canulated sheep. However, 2% NaHCO₃ increased rumen pH and feed intake on …

Livestock Industry And Agricultural Policy, Gene Murra

Economics Commentator (1972- 2016)

No abstract provided.

South Dakota State University Graduation Exercises, December 13, 1980, Brookings, South Dakota, South Dakota State University

Commencement Programs

Please be advised that the individuals listed in the program do not officially confirm meeting the graduation requirements. The Fall 1980 Graduation Exercises will commence with an introduction by University President Sherwood O. Berg. Honorary marshals for the event are Arthur W. Anderson, Retired Extension Economist, and Elmer R. Johnson, Professor Emeritus of Chemistry. Mike Wilson, President of the Student Association, will provide comments. Dr. Harold S. Bailey, Jr. will acknowledge honor students. Recognizing Army and Air Force commissions are Lt. Col. Patrick Todd and Col. Charles Lehman.

Sdsu Collegian, December 10, 1980, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 89, No. 19

South Dakota Range Sites, Charles M. Schumacher, James R. Johnson

SDSU Extension Circulars

This publication provides information about land on which native vegetation is predominantly grasses, grass-like plants, forbs, or shrubs suitable for grazing or browsing use. It discusses the different kinds of rangeland, range inventory, and descriptions of range sites by soil type. Pictorial guides are also included.

Insect Control In Farm Stored Grain, Cooperative Extension South Dakota State University

SDSU Extension Circulars

This publication provides information on controlling insect infestations of farm-stored grain. It discusses liquid, solid, and gas fumigants, as well as dosage, bin preparation, application, and safe fumigant use.

Insect Prevention In Farm Stored Grain, Cooperative Extension South Dakota State University

SDSU Extension Circulars

This publication provides information on preventing or minimizing farm insect infestations of farm-stored grain. Measures such as cleaning bins and equipment, storing clean dry grain, and inspecting regularly are described.

Anaplasmosis, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Anaplasmosis, a disease of mature cattle, has long been recognized as a severe problem in the southern part of the United States. However, with movements of cattle over long distances, the disease is becoming more prominent in the northern plains states.

Preliminary Cost Estimates - Producing Alcohol Fuel From A Small Scale Plant, R. Hutchinson, T. L. Dobbs

Agricultural Experiment Station Circulars (1920-1915)

This paper provides an interim progress report on research at South Dakota State University (SDSU) concerning the economics of producing fuel alcohol in "small-scale" plants. Estimated per gallon costs of producing alcohol are quite high. The lowest estimate is $3.12 per gallon of alcohol (based upon $2.00 corn, a 10% interest rate, and 9,088 gal per year production). The highest estimate is $5.70 per gallon (based upon $2.34 corn, a 15% interest rate, and 4,544 gal per year annual production). These costs indicate the need for utilizing all capital components of a plant close to their capacities, reducing fixed costs …