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Full-Text Articles in Life Sciences
Growth Stimulant Substitutes For Stilbestrol, James J. O'Connell
Growth Stimulant Substitutes For Stilbestrol, James J. O'Connell
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
No abstract provided.
Meeting The Protein Needs Of Growing And Finishing Cattle, William W. Schneider
Meeting The Protein Needs Of Growing And Finishing Cattle, William W. Schneider
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
The cost of nearly all feed commodities has sharply risen since one year ago. Those feed ingredients normally used as natural protein sources, however , have risen in cost much more dramatically than the roughages or the cereal grains used for animal feed. This substantial rise in cost of high protein feeds plus possible shortages of feed grade urea will force many cattle feeders to alter feeding and management practices used in the past. For example, recommendations in previous years frequently called for the use of soybean meal or soybean meal based supplements as the source of protein in growing …
Effects Of Confinement Feeding Systems On Beef Cattle Production, R.D. Goodrich, J.C. Meiske, R.E. Smith, H.E. Henke
Effects Of Confinement Feeding Systems On Beef Cattle Production, R.D. Goodrich, J.C. Meiske, R.E. Smith, H.E. Henke
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
Several factors have stimulated interest in housing systems for feedlot cattle. Some of these factors are (1) the desire to eliminate problems associated with the use of bedding, (2) the desire to decrease the labor required for feeding, bedding and manure handling, (3) the need to develop effective pollution control measures and (4) the desire to know the effects that housing systems may have on the performance and carcass characteristics of feedlot cattle. The objectives of the trials reported herein were (1) to study the influence of housing systems on the performance of finishing steer calves and (2) to study …
Carcass Characteristics Of Bulls, Heifers And Steers As Influenced By Ration And Market Weight, Peter B. Smith, W.J. Costello, Peter J. Thiex, L.B. Embry
Carcass Characteristics Of Bulls, Heifers And Steers As Influenced By Ration And Market Weight, Peter B. Smith, W.J. Costello, Peter J. Thiex, L.B. Embry
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
High feed grain prices, a growing worldwide demand for animal protein, and increasing demand for lean, high quality beef make it imperative that beef volume and production efficiency increase. Because of high feed costs it is important to know how concentrate level in the ration and market weight influence production efficiency and carcass composition of different sex groups. The purpose of this study was to evaluate the effects of market weight and ration concentrate level on the quant itative and qualitative carcass traits of yearling bulls, bull calves, heifers and steers .
Investigation Of Western Yellow Pine (Pinus Ponderosa) Abortion, C. Cogswell, L.D. Kamstra
Investigation Of Western Yellow Pine (Pinus Ponderosa) Abortion, C. Cogswell, L.D. Kamstra
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
For a number of years, ranchers in western South Dakota have been of the opinion that pregnant cows will abort after the consumption of sufficient quantities of yellow pine (Pinus ponderosa) needles. Problem areas exist where the yellow pine is the predominant pine species. Incidence of pine needle abortion is particularly high in late winter and early spring after cows in the last trimester of pregnancy graze on the needles. Some ranchers, however, have experienced the problem throughout the year when cows in earlier stages of pregnancy have aborted. Retained placentas are frequently associated with the abortions. If true abortions …
Growth Stimulating Products For Feedlot Heifers Fed High-Concentrate Diets Of High-Moisture Corn, J.D. Burkhardt, L.B. Embry
Growth Stimulating Products For Feedlot Heifers Fed High-Concentrate Diets Of High-Moisture Corn, J.D. Burkhardt, L.B. Embry
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
This experiment was one in a series to determine the response by fee dlot heifers to various growth promoting products . Products tested were diethylstilbestrol (DES), zeranol and melengestrol acetate (MGA) under conditions of high-concentrate diets with high-moisture grain and hay or haylage.
Growing And Fishing Bulls, Heifers And Steers, P.J. Thiex, L.B. Embry
Growing And Fishing Bulls, Heifers And Steers, P.J. Thiex, L.B. Embry
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
Growth rate of an animal depends upon energy consumed in excess of that for maintenance, and the requirements increase as the animal grows and fattens. Male and female cattle differ in rates of growth and fattening, but changes may be brought about by castration. There still is some concern as to the effects of market weight and energy content of rations on weight gain, feed efficiency and carcass characteristics of feedlot bulls, heifers and steers. This experiment was conducted to study these factors. Bulls ( calves and yearlings), heifers and steers were fed to one of two final weight groups. …
Storage Methods And Protein Supplements For High-Moisture Ear Corn, W.S. Swan, L.B. Embry
Storage Methods And Protein Supplements For High-Moisture Ear Corn, W.S. Swan, L.B. Embry
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
A high rate of gain can be obtained with growing and finishing cattle fed ear corn adequately supplemented with protein, minerals and vitamins. The cob portion of the ear furnishes more roughage than has been reported to result in optimum gains with minimum problems frequently associated with high-concentrate diets. Other roughages are not indicated with ear corn where high rates of gain are desired. Ear corn contains less protein than recommended in most diets for growing and finishing cattle. The low protein cob portion may not be an economical source of roughage in comparison to those considerably higher in protein …
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, 1973
Seventeen registered Angus, Hereford and Shorthorn cows calved in September, 1972. The cows calved on pasture and remained on pasture until early November. From November 10 to December 29, the cows were bred for 1973 fall calves. On December 29, 1972, 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 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 and …
Adaptation Of Feedlot Cattle To Urea And Antibacterial Compounds, J.D. Burkhardt, L.B. Embry, L.B. Dye
Adaptation Of Feedlot Cattle To Urea And Antibacterial Compounds, J.D. Burkhardt, L.B. Embry, L.B. Dye
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
A period of adaptation to urea during which feedlot performance is suppressed is frequently experienced when this product is added to rations of cattle not previously, or recently, fed it. This effect appears more evident with levels of urea used when it forms a major part of total protein in the ration. Urea and antibiotics in combination are common additions to protein supplements or mixed rations. At usual levels for continuous feeding of antibiotics and safe levels of urea for the dietary conditions, the combination appears satisfactory and to offer the beneficial effects from these compounds after a suitable period …
Backgrounding Of Feedlot Cattle - Levels Of Grain On Pasture, L.B. Embry
Backgrounding Of Feedlot Cattle - Levels Of Grain On Pasture, L.B. Embry
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
Utilization of appreciable quantities of roughage for growing and finishing feedlot cattle means some restriction on rate of production in comparison to that obtained from diets containing more liberal quantities of concentrates. Periods of restricted growth of cattle have been shown to be followed by an accelerated rate of growth with an improvement in feed efficiency in comparison to more liberally fed animals during later finishing periods with high-concentrate diets. Thus, there can be some compensation in both rate and efficiency of gain following periods of restriction. However, the amount of compensation may vary depending upon the comparative degree and …
Seventeenth Annual Cattle Feeders Day, Animal Science Department
Seventeenth Annual Cattle Feeders Day, Animal Science Department
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1973
These are the complete proceedings of the seventeenth annual Cattle Feeders Day held on November 2, 1973 at South Dakota State University.