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South Dakota State University

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Opaque-2 Corn In Pig Starter Diets, George W. Libal, Richard C. Wahlstrom Nov 1972

Opaque-2 Corn In Pig Starter Diets, George W. Libal, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1972

Opaque-2 or "high lysine corn" has been shown to be an effective dietary ingredient for growing-finishing swine, allowing a reduction in the total protein needed in the diet and thus reducing the cost of the diet. The study reported herein was designed to evaluate opaque-2 corn in pig starter diets fed to pigs after weaning when amino acid needs of the pig are greatest.

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Sixteenth Annual Swine Day, Animal Science Department Nov 1972

Sixteenth Annual Swine Day, Animal Science Department

South Dakota Swine Field Day Proceedings and Research Reports, 1972

These are the complete proceedings of the sixteenth annual South Dakota Swine Field Day held on November 16, 1972 at South Dakota State University.

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Oats As A Ration For Gestating Sows And Gilts, Richard C. Wahlstrom, G. W. Libal, Lawrence R. Dunn Nov 1972

Oats As A Ration For Gestating Sows And Gilts, Richard C. Wahlstrom, G. W. Libal, Lawrence R. Dunn

South Dakota Swine Field Day Proceedings and Research Reports, 1972

Research conducted the past several years on the nutritional needs of gilts and sows during gestation has resulted in a change from free-choice to limited feeding of brood sows. Limiting feed intake also reduces the total intake of other nutrients. Recent research conducted at Cornell, Illinois and Minnesota using as the only source of protein for gestating gilts has shown little effect on littler size or pig weights, but pigs from sows receiving all of their protein from corn grained less from birth to 21 days.

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Effect Of Flavomycin On Performance Of Growing-Finishing Pigs, Richard C. Wahlstrom, G. W. Libal Nov 1972

Effect Of Flavomycin On Performance Of Growing-Finishing Pigs, Richard C. Wahlstrom, G. W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1972

Antibiotics have been used widely in swine rations at low levels to increase rate of gain and improve feed efficiency for the past two decades . The future of antibiotics as feed additives for swine is uncertain following the recent report of the Food and Drug Administration Task Force that recommended antimicrobial agents used in human clinical medicine be prohibited from growth promotion use in animals by December 31, 1973 .

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A Comparison Of Opaque-2 And Normal Corn In A Free-Choice Feeding System For Swine, Richard C. Wahlstrom, George W. Libal, Lawrence R. Dunn Nov 1972

A Comparison Of Opaque-2 And Normal Corn In A Free-Choice Feeding System For Swine, Richard C. Wahlstrom, George W. Libal, Lawrence R. Dunn

South Dakota Swine Field Day Proceedings and Research Reports, 1972

Several experiments conducted during the past few years have shown opaque-2 corn to be of higher protein quality than regular or normal corn. The improved quality can be attributed to the higher content of lysine and perhaps tryptophan. Two previous experiments have been conducted at this experiment station which have shown that growing pigs consume less protein supplement on a free-choice basis when opaque-2 corn is the grain rather than normal corn. 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 free-choice with two different protein …

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Effect Of Dietary Protein Level And Feed Restriction On Growth And Carcass Characteristics Of Growing-Finishing Swine, Tim S. Stahly, Richard W. Wahlstrom Nov 1972

Effect Of Dietary Protein Level And Feed Restriction On Growth And Carcass Characteristics Of Growing-Finishing Swine, Tim S. Stahly, Richard W. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1972

Research has shown that pigs fed low dietary protein levels are older at slaughter due to depressed grwoth rate, require more feed per unit of gain and have decreased carcass leanness and increased intramuscular fat. However, increased age at slaughter due to a restricted energy intake does not adversely affect feed efficiency and has the opposite effect on carcass quality in that carcasses have less fat and more lean. The objectives of this study were to determine the effects of dietary protein level and feed restriction on performance and carcass characteristics.

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An Evaluation Of The Use Of Dexamethasone For Inducing Parturition In The Sow, T. D. Rich, G. W. Libal, L. R. Dunn, R. C. Wahlstrom Nov 1972

An Evaluation Of The Use Of Dexamethasone For Inducing Parturition In The Sow, T. D. Rich, G. W. Libal, L. R. Dunn, R. C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1972

The objective of the study was to evaluate the use of dexamethasone for inducing and controlling the time of parturition in the sow.

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Effect Of Cooked Corn In Diets Of Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal, Richard M. Luther Nov 1972

Effect Of Cooked Corn In Diets Of Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal, Richard M. Luther

South Dakota Swine Field Day Proceedings and Research Reports, 1972

Little information is known concerning the effects of cooking corn on the growth performance of growing-finishing pigs. Therefore. The objective of the present study was to evaluate the performance of pigs fed cooked or regular corn in free-choice and complete mixed ration feeding systems.

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Effect Of Zinc Bacitracin On Performance Of Growing-Finishing Pigs, Richard C. Wahlstrom, George W. Libal Nov 1972

Effect Of Zinc Bacitracin On Performance Of Growing-Finishing Pigs, Richard C. Wahlstrom, George W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1972

One antibiotic that is not used orally or as an injectable antibiotic in human medicine is zinc bacitracin. The experiment reported herein was conducted to evaluate the effectiveness of zinc bacitracin, to determine the effective dose range in growing-finishing pigs and to compare it with an antibiotic (tylosin) that has been used successfully as a swine feed additive.

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Sdsu Collegian, November 15, 1972, Student Association Of South Dakota State University Nov 1972

Sdsu Collegian, November 15, 1972, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 81, No. 12

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Cost Of Producing Beef With Different Types And Weights Of Cattle, Danny G. Fox Oct 1972

Cost Of Producing Beef With Different Types And Weights Of Cattle, Danny G. Fox

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Currently, there is much interest in changing the U.S.D.A. grading standards. Some suggest that we completely eliminate the use of them. There are many reasons for this, but the major one is that many feel that the present system does not always correctly identify the most desirable carcasses. Many cattle now come to market at 15 to 18 months of age and are not marbled because of their youthfulness.

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Effect Of Sex And Hormonal Compounds On Feedlot Performance And Carcass Merit Of Cattle, L. B. Embry Oct 1972

Effect Of Sex And Hormonal Compounds On Feedlot Performance And Carcass Merit Of Cattle, L. B. Embry

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Bulls gain faster and more efficiently than heifers. Removal of the gonads (bulls or heifers) reduces rate of gain, increases feed requirements and results in changes in carcass characteristics. Some hormone and hormone-like compounds are commonly used for feedlot cattle. Effects on feedlot performance have been shown to vary between male and female and between intact and castrated animals. In addition, comparative performance between males and females and response to growth promoting compounds have been shown to be influences by the diet, age and stage of fish.

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Sixteenth Annual Cattle Feeders Day, Animal Science Department Oct 1972

Sixteenth Annual Cattle Feeders Day, Animal Science Department

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

These are the complete proceedings of the sixteenth annual Cattle Feeders Day held on October 27, 1972 at South Dakota State University.

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Effect Of Nutrition On The Carcass Composition And Quality Of Cattle, R. L. Preston Oct 1972

Effect Of Nutrition On The Carcass Composition And Quality Of Cattle, R. L. Preston

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Beef is a highly desirable food, both nutritionally and for the pleasure it gives during its consumption. Protein of high quality is the major nutritional asset of beef, as well as supplying certain minerals and vitamins. As important as this role is, it is not the main reason that beef is the most desired of all meats. Beef is consumed because it provides great satisfaction. What then contributes of this satisfaction?

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Feedlot Performance Of Bulls And The Response To Diethylstilbestrol Or Zeranol, P. J. Thiex, L. B. Embry Oct 1972

Feedlot Performance Of Bulls And The Response To Diethylstilbestrol Or Zeranol, P. J. Thiex, L. B. Embry

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

The objective of this experiment was to determine the response by feedlot bulls to DES and zeranol when administered at a younger age (about 10 months) and a lighter weight (about 500 lb.).

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U.S.D.A. Quality And Yield Grades For Beef, Dan H. Gee Oct 1972

U.S.D.A. Quality And Yield Grades For Beef, Dan H. Gee

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

The market value of a beef carcass at the present time is primarily determined by two factors: (1) the quality of the meat (palatability) and (2) the quantity or amount of lean meat available.

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Effect Of Breed On Carcass Merit, D. D. Dearborn Oct 1972

Effect Of Breed On Carcass Merit, D. D. Dearborn

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Ten years ago most cattle found in feedlots in the Corn Belt and the Northern Great Plains were straightbreds representing one of the British breeds. However, with the increased use of Charolais and the importation of bulls from at least 12 other European breeds into Canada, a large variety of breeds and breed crosses is found in the feedlots at the present time. This increased variety along with emphasis on increased efficiency has caused many feeders to ask questions concerning the performance of these breeds and breed crosses. The purpose of this paper is to review research results in an …

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Sulfur And Methionine Supplementation With Urea For Feedlot Cattle, B. E. Davidson, L. B. Embry Oct 1972

Sulfur And Methionine Supplementation With Urea For Feedlot Cattle, B. E. Davidson, L. B. Embry

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Efficiency of urea utilization may be affected by several factors. Among these are level and source of energy, level and source of protein and amount of urea in the total diet and in the supplement. Other essential nutrients in the diet should be properly balanced. There has been a tendency in recent years to use higher levels of urea than was earlier recommended. Under some conditions, urea has been satisfactory as the only supplemental protein to diets for cattle. However, consideration should be given to likely problems of palatability and potential toxicity as well as to efficiency of urea utilization.

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Corn Silage Diets For Finishing Cattle When Supplemented With Soybean Meal Or Urea And Des Fed At 10 Mg., 20 Mg. Daily Or Implanted, L. B. Embry, L. B. Dye, F. M. Byers Oct 1972

Corn Silage Diets For Finishing Cattle When Supplemented With Soybean Meal Or Urea And Des Fed At 10 Mg., 20 Mg. Daily Or Implanted, L. B. Embry, L. B. Dye, F. M. Byers

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Corn silage properly supplemented with protein, minerals and vitamin A forms a simple and efficient diet for growing and finishing cattle. Rate of gain will be less than for high-concentrate diets, especially during late stages of finishing. However, gain per acre of corn will be greater when fed as silage than as grain.

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Toxicity Study Using Pine Sawdust As A Roughage Replacement In Gestating Beef Heifer Rations, A. L. Slyter, L. D. Kamstra Oct 1972

Toxicity Study Using Pine Sawdust As A Roughage Replacement In Gestating Beef Heifer Rations, A. L. Slyter, L. D. Kamstra

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

The purpose of this was to determine what difficulties might be encountered as a result of feeding raw pine sawdust to beef heifers during the last trimester of gestation.

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Weaning Age And Management Systems For Fall Born Beef Calves, William Mccone Oct 1972

Weaning Age And Management Systems For Fall Born Beef Calves, William Mccone

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Twenty-five registered Angus, Hereford and Shorthorn cows calved in September, 1971. The cows calved on pasture and remained on pasture until early November. From November 12 to December 29, the cows were bred for 1972 fall calves. On December 29, 1971, one-half of the calves were weaned and started on a self-fed ration. The remaining one-half of the calves were allowed to continue nursing the cows, but the calves also had access to a calf creep feeder containing the same ration used for the weaned calves. At the start of the experiment the calves were randomly divided by sex, breed …

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Diethylstilbestrol, Melengestrol Acetate And Zeranol During Growing And Finishing Of Feedlot Heifers, P. J. Thiex, L. B. Embry Oct 1972

Diethylstilbestrol, Melengestrol Acetate And Zeranol During Growing And Finishing Of Feedlot Heifers, P. J. Thiex, L. B. Embry

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

Hormone and hormone-like compounds are commonly used for feedlot heifers. Effects on feedlot performance and carcass characteristics appear to vary depending on compounds used, levels administered including frequency of implanting, stage of growth and fattening, and dietary conditions. This experiment was one in a series to study the effects of melengestrol acetate (MGA) and implants of diethylstilbestrol (DES) or zeranol administered to heifers during growing and finishing or during finishing only.

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

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

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972

The first report dealing with this project appeared in the Cow-Calf Field Day bulletin, August, 1972. That report presented an example to demonstrate the utility of the program for the cow-calf man. The example was based on estimates of performance traits for specific breeds under a particular environment and management situation and on market conditions existing at that time. The management system basic to the program took the weaning calf to 700 pounds in a backgrounding phase and then through a 140-day feedlot phase which was split into a 50-day growing period and a 90-day finishing period. The purpose of …

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South Dakota State University 1972 Graduate School Bulletin, South Dakota State University Oct 1972

South Dakota State University 1972 Graduate School Bulletin, South Dakota State University

South Dakota State University Catalogs and Bulletins: 1935 to present

No abstract provided.

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South Dakota's Beef Industry Marketing Systems And Alternatives, R. O. Gaarder Oct 1972

South Dakota's Beef Industry Marketing Systems And Alternatives, R. O. Gaarder

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

The purpose of this report is to describe and evaluate:
1. the development and structure of the present marketing system for South Dakota beef cattle and calves,
2. some of the conditions or forces presently at work that may lead to additional changes in the way South Dakota beef cattle are marketed, and
3 . alternative marketing services and programs that could be considered by the South Dakota beef industry or possibly used to better advantage.

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Amino Acid Supplementation Of Low Protein Layer Diets, H. Choudhury, C. W. Carlson Sep 1972

Amino Acid Supplementation Of Low Protein Layer Diets, H. Choudhury, C. W. Carlson

South Dakota Poultry Field Day Proceedings and Research Reports, 1972

Results of a study reported last year indicated that a low protein (10.8%) com-soy diet supplemented with methionine, lysine, tryptophan and isoleucine could support about 69% hen-day egg production over a 16-week period. Additions of different levels of valine or threonine with isoleucine did not show any marked improvement over the supplementation of isoleucine alone. An approach was therefore made to determine which amino acids besides the above are further limiting production with this low protein diet.

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Selenium Content Of Feed And Of Commercially Grown Turkeys, C. W. Carlson, B. J. Bonzer, O. E. Olson Sep 1972

Selenium Content Of Feed And Of Commercially Grown Turkeys, C. W. Carlson, B. J. Bonzer, O. E. Olson

South Dakota Poultry Field Day Proceedings and Research Reports, 1972

As a contribution toward the efforts of the American Feed Manufacturers Association's petition to the Food and Drug Administration to permit selenium additions to animal feeds, two flocks of Large Broad White turkeys in South Dakota were monitored. Each flock v/as observed three times during the growing season and at slaughter. Feed samples were taken periodically throughout the growing period and tissue samples were taken after coding and packaging. A portion of the distal end of the pectoralis minor (breast muscle) and the liver were obtained. Selenium analyses were conducted according to the method of Olson (1969).

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Effects Of Various Pullet Grower Diets On Subsequent Layer Performance, Curt E. Homquist, C. Wendell Carlson Sep 1972

Effects Of Various Pullet Grower Diets On Subsequent Layer Performance, Curt E. Homquist, C. Wendell Carlson

South Dakota Poultry Field Day Proceedings and Research Reports, 1972

Low protein-low energy, low protein-high energy and high protein-high energy diets were fed to 2100 commercial egg-type pullets for twelve weeks when the pul lets were from 8 to 20 weeks of age. The crude protein and metabolizable energy contents of these diets were 10%, 1950 Gal/kg; 12%, 2900 Gal/kg and 16%, 2900 Gal/kg, respectively.

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Flock Record Summary, Phillip E. Plumart, Boyd J. Bonzer Sep 1972

Flock Record Summary, Phillip E. Plumart, Boyd J. Bonzer

South Dakota Poultry Field Day Proceedings and Research Reports, 1972

A computerized flock record keeping system has been developed at South Dakota State University. A report is computed and published monthly from data received from approximately 60 flockowners. The records of those flocks completing their laying cycle during the calendar years of 1968, 1969, 1970, 1971 and through June of 1972 are summarized in table 1.

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Mercury Toxicity In Chick Embryos, R. J. Emerick, C. W. Carlson, Alice M. Holm, C. E. Holmquist Sep 1972

Mercury Toxicity In Chick Embryos, R. J. Emerick, C. W. Carlson, Alice M. Holm, C. E. Holmquist

South Dakota Poultry Field Day Proceedings and Research Reports, 1972

Mercury accumulating to high levels in animal tissue is generally in the form of methylmercury which is readily absorbed but only slowly eliminated. While methylmercury can be formed by microorganisms in lake bottom sediments and concentrated up the biological food chain, inorganic mercury or its metabolic equivalent is sometimes available to animals.

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