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South Dakota State University

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Full-Text Articles in Meat Science

Cow Efficiency Pre- And Postweaning, C.A. Dinkel, W.J. Cosello Jan 1986

Cow Efficiency Pre- And Postweaning, C.A. Dinkel, W.J. Cosello

South Dakota Beef Report, 1986

Total energy intake of the cow for a year is not indicative of her efficiency at weaning or her net return to the enterprise. What is important is how she uses the energy she consumes. Likewise, cow size is not indicative of efficiency or net return. Breed differences probably exist , but they are not as important as individual differences in cow efficiency. Breed differences in postweaning efficiency were found only when efficiency was calculated on a cow basis and the cow's annual intake was included. Remember this is a cow efficiency study and the effect of different sires or …

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Whey Ultrafiltration Permeate Products As Feeds For Steers, D.J. Schingoethe, D.G. Rollins, D.P. Casper, W.J. Costello Jan 1986

Whey Ultrafiltration Permeate Products As Feeds For Steers, D.J. Schingoethe, D.G. Rollins, D.P. Casper, W.J. Costello

South Dakota Beef Report, 1986

A field trial experiment was conducted using 50 steers t o evaluate the feeding value of the ultrafiltrated permeate of whey (UFP) and products made from additional processing of UFP. All steers were fed nutritionally balanced grain mixes and hay. Experimental diets were control (C), in which the grain mix contained primarily corn, oats and soybean meal; UFP fed as the only liquid; partially fermented permeate (PFP), which contained 10% dried yeast added to the ultrafiltrated permeate, fed as the only source of liquid; fermented ammoniated condensed permeate (FACP), which replaced soybean meal in the grain mix; and ammolac (AMM), …

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Effect Of Antibiotics In Adaptation Of Growing Beef Calves To The Feedlot, Richard M. Luther Jan 1986

Effect Of Antibiotics In Adaptation Of Growing Beef Calves To The Feedlot, Richard M. Luther

South Dakota Beef Report, 1986

Four medication schemes for adapting stressed feeder calves t o the feedlot were evaluated in a 110-day trial. A total of 160 Hereford, Angus and Hereford x Angus steers (544 lb.) were fed a high-corn silage diet supplemented with the following medications: (1) nonmedicated control, (2) chlortetracyclinesulfamethazine (350 mg/steer of each compound for 28 days, (3) oxytetracycline (2 g/steer) for 10 days, then 1 g/steer for 4 days) and (4) oxytetracycline (2 g/steer for 14 days). Average daily gain, dry matter consumption and feed conversion were similar (P>.05) for calves in all treatments. None of the steers required additional …

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Effects Of Sodium Diacetrate On Corn Silage Chemical Characteristics, Preservation And Feedlot Performance Of Growing Beef Steers, Richard M. Luther Jan 1986

Effects Of Sodium Diacetrate On Corn Silage Chemical Characteristics, Preservation And Feedlot Performance Of Growing Beef Steers, Richard M. Luther

South Dakota Beef Report, 1986

Whole-plant corn forage ensiled a t 65% moisture and stored in concrete stave silos for 200 days was fed in high-silage diets to growing beef steers. Approximately 84 tons of dry matter were stored in each of two silos. One silo contained forage which was untreated, while the other contained forage treated with sodium diacetate a t 1 lb. per ton of wet forage. Differences in feedlot performance of growing steers or in various chemical characteristics between untreated and sodium diacetate-treated corn silage were small and not significant (P>.05). Both silages had a desirable pH (3.8) and contained over …

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Whole Shelled Corn With And Without Sodium Bicarbonate For Finishing Beef Steers, Richard M. Luther, M. Goetz Jan 1986

Whole Shelled Corn With And Without Sodium Bicarbonate For Finishing Beef Steers, Richard M. Luther, M. Goetz

South Dakota Beef Report, 1986

A total of 160 steers were fed a whole corn-no roughage diet without a buffer or with sodium bicarbonate at a level of .87% of the dry diet . The finishing period of 112 days followed the feeding of a high corn silage diet. Overall feed intake. weight gains and feed conversion were similar (P>.05) for steers supplemented with sodium bicarbonate as for those that did not receive the buffer. Small period differences in performance that were observed between treatments were not significant (P>.05). Carcass characteristics were similar for the control and sodium bicarbonate treatments.

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Prevention Of Silica Urinary Calculi In A Laboratory Animal Model, Royce J. Emerick, Carl J. Schreier, Donghao Lu Jan 1986

Prevention Of Silica Urinary Calculi In A Laboratory Animal Model, Royce J. Emerick, Carl J. Schreier, Donghao Lu

South Dakota Beef Report, 1986

An animal model utilizing Sprague-Dawley rats fed a diet containing 2% of tetraethylorthosilicate (TES) has been used to study urinary conditions and dietary factors preventing silica urinary calculi . The basal TES diet produced approximately a 50% incidence of silica urinary calculi. Supplemental dietary phosphorus and the urinary acidifying agent ammonium chloride greatly reduced the urinary calculi incidence, while supplemental dietary calcium and urine alkalinization with sodium bicarbonate increased the incidence. The protection from silica urinary calculi provided by sodium or ammonium phosphate compounds was found to be independent of their urinary acidifying effects, and the effects of phosphates and …

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Effects Of Level Of Energy Supplement In Early Winter And Level Protein After Calving On Beef Cows Grazing Native Range, R.J. Pruitt Jan 1986

Effects Of Level Of Energy Supplement In Early Winter And Level Protein After Calving On Beef Cows Grazing Native Range, R.J. Pruitt

South Dakota Beef Report, 1986

Simmental-Angus crossbred cows grazing native range near Cottonwood, SD, were fed two precalving levels of energy supplement and two postcalving levels of protein supplement. Cow weight change and reproductive performance were similar for all treatments. Although calves from cows supplemented with higher levels of energy gained faster from birth to early May, gains to weaning were similar for all treatments.

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Hydrolyzed Feather Meal As A Protein Supplement For Steer Calves Fed Corn Silage, Rh. Pritchard, R.M. Luther, M.A. Robbins Jan 1986

Hydrolyzed Feather Meal As A Protein Supplement For Steer Calves Fed Corn Silage, Rh. Pritchard, R.M. Luther, M.A. Robbins

South Dakota Beef Report, 1986

Hydrolyzed feather meal (HFM) was evaluated for soybean meal replacement value in corn silage diets fed t o steer calves. One hundred ninety-two steers (692 lb) were fed corn silage diets formulated to contain 11.5% crude protein. Hydrolyzed feather meal was substituted for soybean meal at levels providing 0, 25, 50 or 75% of the supplemental protein. Overall performance for the 98-day feeding trial was as follows: 2.10 lb average daily gain; 17.91 lb/day dry matter (DM) intake and 8.58 DM/gain. Protein supplements had no effect on performance, indicating that cost per unit protein is the primary consideration when formulating …

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Evaluation Of An Acid Hydrolyzed Wood By-Product As An Energy And Protein Source In Rumiant Diets, Rh. Pritchard, A. N' Daiye Jan 1986

Evaluation Of An Acid Hydrolyzed Wood By-Product As An Energy And Protein Source In Rumiant Diets, Rh. Pritchard, A. N' Daiye

South Dakota Beef Report, 1986

An acid hydrolyzed wood pulp (AHWP) product that had been buffered with NH4OH was evaluated as a potential feedstuff for ruminant diets. The finely ground low dry matter (33%) material was evaluated for acceptability, digestibility and protein feeding value. In vitro fermentation indicated that fermentable dry matter was extremely low, 35.1%. Diets were not readily consumed by cattle if they contained > 60% AHWP. In vivo dry matter digestibility (DMD) coefficients where AHWP replaced corn as 0, 15, 30 or 45% of the diet were 76.5, 69.3, 65.6 and 78.5%, respectively. A similar response was noted for crude protein and acid …

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Development Of An In Vivo Model To Determine The Biological Value Of Microbial Protein, T. Fritz, R.H. Pritchard Jan 1986

Development Of An In Vivo Model To Determine The Biological Value Of Microbial Protein, T. Fritz, R.H. Pritchard

South Dakota Beef Report, 1986

A semi-purified diet (SPD) was fed to 12 wether lambs and one fistulated wether and evaluated for acceptability and ability to support growth. Ruminal pH and NH3 were monitored throughout the diet adaptation period. Treatments included three levels of dry matter intake; low intake (LI) 750 g-hd-l. d-l, medium intake (MI) 1125 g-hd-l..d-l and high intake (HI) 1500 g-hd-l.d-l. Digestibility of dry matter (DM, 70.6%), acid detergent fiber (ADF, 62.8%), nitrogen (N, 72.8%) and percentage digestible nitrogen retained (33.2%) were not different across intake levels. Indigestible ADF of the semi-purified diet appears to be a suitable solid phase marker for …

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Sdsu Purebred Beef Herds, R.J. Pruitt, R.N. Haigh Jan 1986

Sdsu Purebred Beef Herds, R.J. Pruitt, R.N. Haigh

South Dakota Beef Report, 1986

A herd of purebred Angus and Simmental cows is maintained near the SDSU campus that is used for teaching. research and extension activities. Cattle maintained at this unit are made available for Introductory Animal Science. meats, animal breeding. beef production. and livestock evaluation courses. Current research under the direction of Dr. Herley Miller is reported in another paper in this publication. Besides use in the classroom. cattle are used for the annual SDSU Little International. field days and numerous 4-H and FFA and other educational events. In addition to providing research information and an opportunity for education, we hope this …

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1986 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extention Service, South Dakota State University Jan 1986

1986 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extention Service, South Dakota State University

South Dakota Beef Report, 1986

We are pleased to present this, our first annual SDSU BEEF REPORT. It is a compilation of research reports and applied information relating especially to the beef cattle industry. The papers included in this report have been prepared by SDSU research and extension scientists, not only in the Department of Animal and Range Sciences, but also in Chemistry, Economics, Dairy Science, Plant Science and Veterinary Science. Since some of the projects from which results are reported are still in progress, the preliminary nature of the results should be recognized. For the reader's convenience, the articles included are grouped by specific …

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Temperature Computer Measurements, Production And Carcass Traits Of Individually Fed Weight Constant Steers, Lowell M. Anderson Jan 1971

Temperature Computer Measurements, Production And Carcass Traits Of Individually Fed Weight Constant Steers, Lowell M. Anderson

Electronic Theses and Dissertations

During 1968, 29 Hereford steers were individually fed and marketed at one of seven constant weight classes from approximately 386 to 522 kg at intervals of 22.7 kg. During 1970, 21 Angus and Hereford crossbred steers were individually fed and marketed at one of four constant weight classes from approximately 386 to 522 kg at intervals of approximately 45.0 kg. The amounts of edible portion, trimmed fat, removed bone and the summation of the kidney, pelvic, and cod fat were determined on the steers of both years. In 1970 two experiments examined the usefulness of an analog computer for calculation …

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