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Toxicity Study Using Pine Sawdust As A Roughage Replacement In Gestating Beef Heifer Rations, A. L. Slyter, L. D. Kamstra
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.
Diethylstilbestrol, Melengestrol Acetate And Zeranol During Growing And Finishing Of Feedlot Heifers, P. J. Thiex, L. B. Embry
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.
Cost Of Producing Beef With Different Types And Weights Of Cattle, Danny G. Fox
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.
Choosing Breeds And Crossbreeding Systems By Computer, C. A. Dinkel, D. D. Dearborn
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 …
Effect Of Sex And Hormonal Compounds On Feedlot Performance And Carcass Merit Of Cattle, L. B. Embry
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.
Sixteenth Annual Cattle Feeders Day, Animal Science Department
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.
Weaning Age And Management Systems For Fall Born Beef Calves, William Mccone
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 …
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
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.
Effect Of Nutrition On The Carcass Composition And Quality Of Cattle, R. L. Preston
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?
Feedlot Performance Of Bulls And The Response To Diethylstilbestrol Or Zeranol, P. J. Thiex, L. B. Embry
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.).
U.S.D.A. Quality And Yield Grades For Beef, Dan H. Gee
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.
Effect Of Breed On Carcass Merit, D. D. Dearborn
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 …
Sulfur And Methionine Supplementation With Urea For Feedlot Cattle, B. E. Davidson, L. B. Embry
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.