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South Dakota State University

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Herd Health Calendar For Cow-Calf Producer, James H. Bailey Jan 1972

Herd Health Calendar For Cow-Calf Producer, James H. Bailey

South Dakota Cow-Calf Field Day Proceedings, 1972

The cliche "An ounce of prevention is worth a pound of cure" may be worn threadbare, but it has direct application to cow-calf operations today. There is no cure for some cattle diseases once they become established in a herd. Take vibriosis for example. It can string out the calving interval making it virtually impossible to ever get the cows back to a normal, seasonal interval. Vibriosis can be prevented by careful management practices and a vaccination program.

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Achieving Reproductive Efficiency, Lowell Slyter Jan 1972

Achieving Reproductive Efficiency, Lowell Slyter

South Dakota Cow-Calf Field Day Proceedings, 1972

What is reproductive efficiency in terms of the beef cow? By traditional definition, it would be one calf per cow each 12 months. However, there is more to it than just a "calf". We want a heavy weaning calf and would like to do it on the least amount of feed possible to accomplish the task. The number of calves produced per female in the breeding herd is no doubt the single most important factor influencing the income of the cow-calf operation. Increasing the calf crop by 10% is equal to approximately a 50 lb. increase in the average weaning …

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Choosing Breeds And Crossbreeding Systems By Computer, C. A. Dinkel, D. D. Dearborn Jan 1972

Choosing Breeds And Crossbreeding Systems By Computer, C. A. Dinkel, D. D. Dearborn

South Dakota Cow-Calf Field Day Proceedings, 1972

A computer program called "Simumate" has been developed that will allow a producer to evaluate crossbreeding systems for his particular nutrition and management situation using the breeds of his choice. This program, based on a method suggested by Dearborn (1970), takes into account energy requirements for maintenance of the cow, for milk production and for gain required during the gestation period (Neville and McCullough, 1969). It also takes into account the reproductive rate, growth rate, selling prices at several stages and the costs of production both feed and fixed in arriving at a net return for all straightbreds, all possible …

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Sephadex G-25 And Charcoal Separation Of Mouse Growth Inhibitors In Soybeans From Trypsin Inhibitors, Larry James Tidemann Jan 1972

Sephadex G-25 And Charcoal Separation Of Mouse Growth Inhibitors In Soybeans From Trypsin Inhibitors, Larry James Tidemann

Electronic Theses and Dissertations

Rising costs have changes man’s ideals and eating habits. Plant ingredients, because of their relatively low costs, have been increasingly used as a substitute for animal proteins. If these plant ingredients could be directly utilized by man, this would be a more efficient use of energy and nutrients. One plant source currently used in such a manner is soybeans, which is a prime source of protein for human and livestock nutrition. However, soybeans contain several factors that are detrimental to man and livestock. Heating of soybeans counteracts these factors, since the undesirable factors are heat labile. However, heat alters the …

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The Effect Of Level Of Dietary Protein On The Growth And Carcass Characteristics Of Growing-Finishing Swine Fed To A Heavy Weight, Keith E. Gilster Jan 1972

The Effect Of Level Of Dietary Protein On The Growth And Carcass Characteristics Of Growing-Finishing Swine Fed To A Heavy Weight, Keith E. Gilster

Electronic Theses and Dissertations

Two hundred sixteen crossbred barrows and 96 crossbred gilts were used in a series of three experiments to determine the effect of dietary protein level during three different growth periods on growth am quantitative and qualitative carcass traits of the growing-finishing pig. Pigs were fed from approximately 20 to 113 kilograms. Corn-soybean meal diets fortified with recommended levels of vitamins, minerals and an antibiotic were fed. Pigs fed 20, 18 or 16% protein diets from weights of 20 to 45 kg gained both significantly faster and more efficiently than pigs fed diets of 12% protein. Feeding a low (12%) protein …

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Trends, Developments, And Potentials For Growth: South Dakota's Beef Industry, R. O. Gaarder Dec 1971

Trends, Developments, And Potentials For Growth: South Dakota's Beef Industry, R. O. Gaarder

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

Beef is South Dakota's most important agricultural product. The state ranked 6th in the nation in the number of beef cows, and 11th in the number of cattle on feed on January 1, 1971. About half of all South Dakota cash receipts from farm marketings come from the sale of cattle and calves.
This report provides an assessment of past trends and of problems and potentials for beef production in South Dakota.

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Sdsu Collegian, November 23, 1971, Student Association Of South Dakota State University Nov 1971

Sdsu Collegian, November 23, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 19

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Effect Of Lactation Feeding Level On Sow And Pig Performance, George W. Libal, Larry D. Dunn, Richard C. Wahlstrom Nov 1971

Effect Of Lactation Feeding Level On Sow And Pig Performance, George W. Libal, Larry D. Dunn, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1971

The study reported herein was designed to repeat this work comparing production and economic advantages for these two feeding management practices over a 21-day and a 42-day lactation period.

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New Pork Industry Problems: Pss And Pse, Dan H. Gee Nov 1971

New Pork Industry Problems: Pss And Pse, Dan H. Gee

South Dakota Swine Field Day Proceedings and Research Reports, 1971

Over the past decade the swine producer has made tremendous strides in producing leaner and more heavily muscled hogs which yield a higher proportion of their carcass weight in lean edible portion. The modern pig has excelled his ancestry in total performance, growth, feed efficiency and muscle producing ability. Because of the advances made in nutrition, breeding, and management, the meat type pig of today is more efficient than ever be fore in conversion of feed protein to muscle protein. In addition, the environment under which many pigs are raised has been changed from the customary pasture and dirt lot …

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The Effects Of One Day Flushing And Early Gestation Energy Levels On Reproductive Performance Of Gilts, Duanne E. Wachholz, Travis D. Rich, Richard C. Wahlstrom Nov 1971

The Effects Of One Day Flushing And Early Gestation Energy Levels On Reproductive Performance Of Gilts, Duanne E. Wachholz, Travis D. Rich, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1971

The experiment reported here was conducted to determine what effect one-feed flushing and energy level during the first third of gestation had on reproductive performance.

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Opaque-2 Corn In A Free-Choice Feeding System For Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal Nov 1971

Opaque-2 Corn In A Free-Choice Feeding System For Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1971

Experiments conducted during the past few years have shown opaque-2 corn to have a higher nutritional value than normal corn. It is known that a higher content of the essential amino acid lysine is one of the reasons for the increased value of opaque-2 corn when fed to swine. Certain other essential amino acids are also present in higher amounts than in normal corn. It was reported at the corn could be fed free-choice to growing swine. The experiment reported herein was conducted to obtain further information on feed consumption and performance of growing-finishing pigs fed opaque-2 or normal corn …

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Fifteenth Annual Swine Day, Animal Science Department Nov 1971

Fifteenth Annual Swine Day, Animal Science Department

South Dakota Swine Field Day Proceedings and Research Reports, 1971

These are the complete proceedings of the fifteenth annual South Dakota Swine Field Day held on November 18, 1971 at South Dakota State University.

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Influence Of Growth Rate From Three To Twelve Months Of Age On Reproductive Characteristics Of Boars, J. D. Reed, T. D. Rich Nov 1971

Influence Of Growth Rate From Three To Twelve Months Of Age On Reproductive Characteristics Of Boars, J. D. Reed, T. D. Rich

South Dakota Swine Field Day Proceedings and Research Reports, 1971

The objective of the present study was to evaluate the influence of growth rate from 3 to 12 months of age on the onset of puberty, libido and fertility of boars.

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Effect Of Protein Level In Growing-Finishing Swine Diets Fed To Pigs Marketed At Heavy Weights, Keith E. Gilsner, Richard C. Wahlstrom Nov 1971

Effect Of Protein Level In Growing-Finishing Swine Diets Fed To Pigs Marketed At Heavy Weights, Keith E. Gilsner, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1971

The purpose of the two successive experiments reported herein was to determine the protein requirement of swine from a weight of approximately 44 to 245 lb.

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Sdsu Collegian, November 2, 1971, Student Association Of South Dakota State University Nov 1971

Sdsu Collegian, November 2, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 14

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You Have Your Deer, Now, Enjoy Its Meat, R. Willis, D. Deerhardt Nov 1971

You Have Your Deer, Now, Enjoy Its Meat, R. Willis, D. Deerhardt

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

South Dakota State University research was done on the acceptability of venison. Evaluation was by a taste panel as well as by use of special laboratory equipment. The taste panel consisted of four to six persons, both men and women, fr�m the Wildlife and Home Economics Departments of the Agricultural Experiment Station. The sensory qualities that were studied included juiciness, tenderness, flavor, aroma, appearance and general acceptability of the cooked meat. Special laboratory equipment to measure tenderness and juiciness was used to provide measurements for comparison with panel evaluations.

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Sdsu Collegian, October 26, 1971, Student Association Of South Dakota State University Oct 1971

Sdsu Collegian, October 26, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 11

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Sdsu Collegian, October 22, 1971, Student Association Of South Dakota State University Oct 1971

Sdsu Collegian, October 22, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 11

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Sdsu Collegian, October 12, 1971, Student Association Of South Dakota State University Oct 1971

Sdsu Collegian, October 12, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 8

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Sdsu Collegian, October 8, 1971, Student Association Of South Dakota State University Oct 1971

Sdsu Collegian, October 8, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 7

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Sdsu Collegian, October 5, 1971, Student Association Of South Dakota State University Oct 1971

Sdsu Collegian, October 5, 1971, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 80, No. 6

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Extension: Catalyst For Change: 1971 Report, Cooperative Extension Service Oct 1971

Extension: Catalyst For Change: 1971 Report, Cooperative Extension Service

SDSU Extension Special Series

This is the annual report of the South Dakota Cooperative Extension Service, 1971.

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Levels Of Diethylstilbestrol And Types Of Protein Supplements In Ground Ear Corn Diets For Finishing Cattle, L. B. Embry Oct 1971

Levels Of Diethylstilbestrol And Types Of Protein Supplements In Ground Ear Corn Diets For Finishing Cattle, L. B. Embry

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1971

Results of numerous experiments have shown that diethylstilbestrol at 10 mg. daily in the feed of implanted at 30 to 36 mg. improves weight gains and feed efficiency of feedlot cattle. More recently it has been reported that feeding more than 10 mg. daily to heavier cattle results in further stimulation of weight gains and feed efficiency. Feeding of 20 mg. per head daily of diethylstilbestrol is now cleared for feedlot cattle above 750 lb.

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Relative Position Of Farmer-Feeders In The Increasingly Competitive Cattle Feeding Business, D. G. Cox Oct 1971

Relative Position Of Farmer-Feeders In The Increasingly Competitive Cattle Feeding Business, D. G. Cox

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1971

Farmer-feeders can potentially compete with anyone in the cattle feeding business. They have traditionally had many built-in advantages. By feeding the cattle on the farm where the grain and roughage are grown, drying, handling, shrinkage and transportation costs are reduced, and returns can be increased per acre by being able to market roughages and silages through cattle. In addition, there are fewer people obtaining a profit out of both the cattle and the feed when cattle are fed at the source of the feed. Another plus factor that will become increasingly important is that pollution is not as big a …

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Nutritional Quality Control And Feedbunk Management Of Feedlot Cattle, Donald Gill Oct 1971

Nutritional Quality Control And Feedbunk Management Of Feedlot Cattle, Donald Gill

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1971

Small errors in the nutrition and management of feedlot cattle frequently spell the difference between success and failure as a cattle feeder. Some frequently insignificant appearing factors may at times allow cost of gain to increase up to $4 to $5 per hundredweight.

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Fifteenth Annual Cattle Feeders Day, Animal Science Department Oct 1971

Fifteenth Annual Cattle Feeders Day, Animal Science Department

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1971

These are the complete proceedings of the fifteenth annual Cattle Feeders Day held on October 1, 1971 at South Dakota State University.

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South Dakota Farm & Home Research: 84th Annual Report (Fall 1971), Agricultural Experiment Station, South Dakota State University Oct 1971

South Dakota Farm & Home Research: 84th Annual Report (Fall 1971), Agricultural Experiment Station, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

From the Dean and Director [p] 2
Agricultural Engineering [p] 4
Animal Science [p] 9
Bacteriology [p] 14
Botany-Biology [p] 18
Dairy Science [p] 21
Economics [p] 23
Entomology-Zoology [p] 26
Home Economics [p] 30
Horticulture-Forestry [p] 33
Plant Science [p] 35
Rural Sociology [p] 40
Station Biochemistry [p] 42
Veterinary Science [p] 44
Wildlife and Fisheries Science [p] 46
Publications [p] 52
Financial Statement [p] 60
Staff Members [p] 61
Agricultural Advisory Groups [p] 63

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Effects Of Dietary Selenium Supplements On The Selenium Content Of Eggs And Tissues, R. L. Arnold, O. E. Olson, C. W. Carlson Sep 1971

Effects Of Dietary Selenium Supplements On The Selenium Content Of Eggs And Tissues, R. L. Arnold, O. E. Olson, C. W. Carlson

South Dakota Poultry Field Day Proceedings and Research Reports, 1971

Over the past several years we have conducted experiments to determine the effects of adding selenium to chicken diets. The purpose of this paper is to report effects of selenium supplements on tissue and egg deposition. Selenium is not adequate in the feeds grown in certain areas so currently the Food and Drug Administration is being asked to approve the addition of selenium to pre pared feeds. As with any new additive there must be sufficient proof that there are no harmful effects before the Food and Drug Administration can grant per mission to add selenium to feeds.

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Third Annual Poultry Field Day, Animal Science Department Sep 1971

Third Annual Poultry Field Day, Animal Science Department

South Dakota Poultry Field Day Proceedings and Research Reports, 1971

These are the complete proceedings of the third annual Poultry Field Day held on September 30th, 1971 at South Dakota State University.

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Feeding Brood Sows, Cooperative Extension South Dakota State University Jul 1971

Feeding Brood Sows, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Pregestation, gestation, and lactation are critical periods in swine nutrition. Work at many experiment stations has shown that sows will produce larger litters if their energy intake is limited during gestation than if they are allowed access to a self feeder. In the gestation period weight gains must be controlled, because over-fatness often decreases litter size besides increasing feed costs. In the nursing period, plentiful milk production requires liberal feeding, however, there is evidence that milk production is to some extent related to the number of nursing pigs and it would appear reasonable to feed the lactating sow on a …

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