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Articles 1 - 19 of 19
Full-Text Articles in Life Sciences
Pik Certificates And Cattle Feeding, Donald Peterson
Pik Certificates And Cattle Feeding, Donald Peterson
South Dakota Beef Report, 1987
The primary objective of this study was to determine the optimal cooking rate and endpoint temperature of a precooking regime for beef roasts which maximizes consumer acceptability and storage stability. Percentage cooking loss and TEA values were minimized when roasts were precooked to the lowest endpoint temperature (45 C, 112 F). I n addition, long-term cooking (heating rate = 16 min/C) improved TEA values (Thiobarbituric acid, a test for oxidative rancidity) for precooked beef roasts. Sensory qualities did not differ (P>.05) due to cooking rate or endpoint temperature. Findings suggest that a low-temperature long-term cooking method optimizes (Pc.05) cooking …
Effects Of Heating Rate And Endpoint Temperature On The Palatability And Storage Stability Of Precooked Beef Roasts, C.M. Chen, P.S. Dezeeuw, W.J. Costello
Effects Of Heating Rate And Endpoint Temperature On The Palatability And Storage Stability Of Precooked Beef Roasts, C.M. Chen, P.S. Dezeeuw, W.J. Costello
South Dakota Beef Report, 1987
The primary objective of this study was to determine the optimal cooking rate and endpoint temperature of a precooking regime for beef roasts which maximizes consumer acceptability and storage stability. Percentage cooking loss and TEA values were minimized when roasts were precooked to the lowest endpoint temperature (45 C, 112 F). I n addition, long-term cooking (heating rate = 16 min/C) improved TEA values (Thiobarbituric acid, a test for oxidative rancidity) for precooked beef roasts. Sensory qualities did not differ (P>.05) due to cooking rate or endpoint temperature. Findings suggest that a low-temperature long-term cooking method optimizes (Pc.05) cooking …
Evaluation Of Varying Levels Of Hereford, Simmental And Angus Breeding Cows, D.M. Marshall, C.A. Dinkel
Evaluation Of Varying Levels Of Hereford, Simmental And Angus Breeding Cows, D.M. Marshall, C.A. Dinkel
South Dakota Beef Report, 1987
Cow size, reproductive performance and calf performance to weaning were evaluated for Simmental-Hereford cows (25 to 38% Hereford) mated to Hereford bulls, Simmental-Hereford cows (50% Hereford) mated to Hereford bulls, Simmental-Hereford cows (62-7!5% Hereford) mated to Simmental bulls, Angus-Hereford cows (25.38% Hereford) mated to Hereford bulls, Angus-Hereford cows (50% Hereford) mated to Hereford bulls and Angus-Hereford cows (62-75% Hereford) mated to Angus bulls. Simmental cross cows were heavier and taller and produced heavier calves at b i r t h and weaning than Angus cross cows. Pregnancy rate, calf preweaning survival rate and calf birth date did not vary significantly …
Effects Of Bull Exposure On Post-Partum Interval And Reproductive Performance In Beef Cows, C.D. Naasz, H.L. Miller, R.H. Haigh
Effects Of Bull Exposure On Post-Partum Interval And Reproductive Performance In Beef Cows, C.D. Naasz, H.L. Miller, R.H. Haigh
South Dakota Beef Report, 1987
Spring calving beef cows were utilized to study the effect of bull exposure early postpartum on return to estrus and fertility. In the spring of 1985 and 1986, cows were randomly exposed to epididectomized bulls 3 to 7 days after calving until beginning of the breeding season or not exposed to bulls. Cows were observed for estrus twice daily beginning approximately 4 weeks after the start of calving until synchronization. I n 1986, blood samples were collected weekly by jugular venipuncture during heat detection and serum progesterone concentrations were determined. ALL cows were synchronized with Synchro-Mate B and inseminated 48 …
Efficacy Of Terminator, Max-Con And Y-Tek Experimental Impregnated Ear Tag (Mc.602tc) For The Control Of Resistant Populations Of The Horn Fly In South Dakota During 1987, Emmett R. Easton, Glen Bennett
Efficacy Of Terminator, Max-Con And Y-Tek Experimental Impregnated Ear Tag (Mc.602tc) For The Control Of Resistant Populations Of The Horn Fly In South Dakota During 1987, Emmett R. Easton, Glen Bennett
South Dakota Beef Report, 1987
Insecticide impregnated ear tags containing Diazinon or Dursban/cypermethrin combinations when applied at the rate of two tags per cow were more effective for the control of horn flies than tags that were applied at the rate of one per cow. With the Terminator® tag, the percentage control diminished after 8 t o 10 weeks when one tag was present, but the percentage control remained constant over a period of 15 weeks with two tags per cow. With the Max-Con@ tag control was Less satisfactory after 6 weeks when only one tag per cow was applied, but good control was received …
Rumen Injectable Probiotic Feed Additive For Newly Arrived Feedlot Cattle, J.J. Wagner
Rumen Injectable Probiotic Feed Additive For Newly Arrived Feedlot Cattle, J.J. Wagner
South Dakota Beef Report, 1987
The effect of rumen injectable microbials and microbial feed additives on feedlot performance and health were monitored in a 28-day receiving trial. Average daily dry matter intake and gain and feed conversion were 9.75 lb/day, 3.78 lb/day and 2.59 lb feed/lb gain, respectively, and were not significantly different between treatments. There appeared to be no advantage to using probiotics in this trial.
Feeding High Grain Diets To Steer Calves With Different Feedlot Arrival Weights, R.H. Pritchard
Feeding High Grain Diets To Steer Calves With Different Feedlot Arrival Weights, R.H. Pritchard
South Dakota Beef Report, 1987
Crossbred steer calves (384 head) were used in a 2-year study to determine the effects of feedlot arrival weight and diet concentrate levels on feedlot performance and carcass variables. Steers were separated into Light (434 lb), medium (486 lb) and heavy (533 lb) groups based upon weights when they arrived at the feedlot. A low energy (LE) corn silage receiving and growing system was compared with a high energy (HE) system that involved feeding relatively higher levels of grain during receiving and growing periods. Calves were fed to similar fatness endpoints. Rate of gain was similar for weight groups, but …
Three-Year Summary Of Preconditioning Effects On Pre- And Postshipment Performance Of Feeder Calves, R.H. Pritchard, J.K. Swann, M.A. Robbins
Three-Year Summary Of Preconditioning Effects On Pre- And Postshipment Performance Of Feeder Calves, R.H. Pritchard, J.K. Swann, M.A. Robbins
South Dakota Beef Report, 1987
Production efficiencies associated with preconditioning feeder calves have been evaluated using 600 calves obtained from four ranches over a 3-year period. Nonpreconditioned calves remained with their dams during preconditioning and all calves were shipped to a research feedlot on the same dates each year. Average daily gains of nonpreconditioned calves for 28 days prior to shipment were variable over years and related t o range conditions. ADG of nonpreconditioned calves during each year were 1.39, .2 and 2.12 b and differed (P< .001) from preconditioned c a l f gains of 2.18, 1.81 and .91 lb for the 39 days prior to shipment. Preconditioning responses interacted with ranch and year, indicating ranch conditions will have a significant impact on results. By weaning 30 days earlier, dams of preconditioned calves lost less weight during this same period. This effect was more pronounced when range conditions were poor. Preconditioning did not affect feed lot morbidity or mortality. During the initial 56 days in the feedlot, preconditioned calves consumed more dry matter each year but gains were similar. There was no effect of preshipment management on ADG after 56 days on feed and in the initial 2 years feed efficiency was better for nonpreconditioned calves. This advantage in feed efficiency carried through to slaughter at about 240 days.
Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont
Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont
South Dakota Beef Report, 1987
Simnental-Angus crossbred cows were fed differing Levels of nutrition from December to May in each of 3 years to create a wide range in cow body condition or fleshiness at the beginning of the calving season (beginning mid-March) and when turned to summer pasture (early May) 1 month prior to the beginning of the breeding season (early June). Cows that were fleshier in March, May or June cycled earlier. Cows that were fleshier at the beginning of the breeding season calved earlier the following years. For cows that calved Late in the calving season, body condition prior to calving, in …
Effect Of Restricting Feed Intake During The Finishing Phase On Feedlot Performance And Dietary Energy Utilization, J.J. Wagner
Effect Of Restricting Feed Intake During The Finishing Phase On Feedlot Performance And Dietary Energy Utilization, J.J. Wagner
South Dakota Beef Report, 1987
A total of 192 yearling Angus steers were used in two trials to investigate the impact of restricting feed intake on feed conversion and energy utilization. In trial 1, feed intake was restricted to approximately 83% of ad libitum. Cattle were slaughtered at a constant fatness. In trial 2, intake was restricted to approximately 93 and 85% of ad Libitum. After 56 days on feed, half of the 85% cattle were allowed to consume feed ad Libitum. Cattle were slaughtered at a constant cumulative NEg intake. Average daily gain was reduced for the restricted intake cattle compared with controls. Carcass …
Alternate Feeding Of Corn And Corn Silage Diets To Feedlot Cattle, J.J. Wagner
Alternate Feeding Of Corn And Corn Silage Diets To Feedlot Cattle, J.J. Wagner
South Dakota Beef Report, 1987
One hundred twenty-eight Angus yearling steers (800 lb) were utilized in a trial to determine if feeding the concentrate portion of a 40% corn silage finishing diet separately from the silage would result in improved feedlot performance and feed conversion. Cattle fed the concentrate separately from silage achieved similar average daily gains and tended to have slightly better feed efficiency than cattle fed a completely mixed diet (2.26 vs 2.25 lb/head/day and 9.21 vs 9.89, respectively). Feeding completely mixed, high concentrate finishing diets resulted in the greatest performance and under current conditions is likely the most economical situation for most …
Optimun Levels Of Dietary Crude Protein And Monensin For Steer Calves On Limit-Fed, High Concentrate Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins
Optimun Levels Of Dietary Crude Protein And Monensin For Steer Calves On Limit-Fed, High Concentrate Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins
South Dakota Beef Report, 1987
One hundred ninety-two Angus and Angus x Limousin calves (611 lb) were randomly allotted to one of four Levels of crude protein intake and three dosages of monensin in an 80% concentrate diet. Intake of the complete diet was restricted to allow 2.2 lb average daily gain over an 86-day period. Crude protein was fed at 90, 100, 110 or 120% of the gram daily requirement described by NRC. Monensin was fed at 120, 180 or 240 mg/head/day. Each 10% increase in dietary crude protein caused a .13 lb increase in ADG, a .34 unit improvement in feed efficiency and …
Urea, Corn Gluten Meal Or Soybean Meal As Supplemental Crude Protein Sources For Feedlot Steers Limit-Fed High Energy Growing Diets, J.J. Wagner, T.L. Mader
Urea, Corn Gluten Meal Or Soybean Meal As Supplemental Crude Protein Sources For Feedlot Steers Limit-Fed High Energy Growing Diets, J.J. Wagner, T.L. Mader
South Dakota Beef Report, 1987
Urea, corn gluten meal and soybean meal were compared as supplemental crude protein sources for growing steers fed limited amounts of a high energy diet. Interactions between level of urea and natural protein source were not significant, indicating that source of natural protein did not influence urea utilization. Level of urea and source of natural protein did not affect average daily gain. These data indicate that up to 1% of diet dry matter as urea can be effectively utilized by limit-fed cattle.
Limit-Fed, High Energy Diets For Growing Cattle, J.J. Wagner, T.L. Mader
Limit-Fed, High Energy Diets For Growing Cattle, J.J. Wagner, T.L. Mader
South Dakota Beef Report, 1987
Limit-fed, high energy (57 Mcal per cwt dry matter) diets were compared to full - fed, Low energy (46 Mcal per cwt dry matter) corn silage and alfalfa hay diets. Feed conversions were 5.68 and 5.78 lb of dry matter per lb of gain for the limit-fed silage and alfalfa diets vs 6.86 and 7.45 lb of dry matter per lb o f gain for the full - fed silage and alfalfa hay diets, respectively. Break-even roughage prices were calculated from feed efficiency and ration cost information. If corn is valued to the bunk at 31.50 per bushel and soybean …
Current Knowledge Concerning Silica Urinary Calculi, Royce J. Emerick
Current Knowledge Concerning Silica Urinary Calculi, Royce J. Emerick
South Dakota Beef Report, 1987
Laboratory research has shown phosphate to inhibit the formation of insoluble silica - protein complexes that are believed to be important in the formation of silica urinary calculi. In work with laboratory animals, increases in dietary phosphorus and urine acidifying salts reduced the incidence of silica urinary calculi. These findings translate into feeding and management practices that may be beneficial in reducing the incidence of silica urinary calculi in cattle and sheep.
Sdsu Purebred Beef Herds, R.J. Pruitt, R.M. Haigh
Sdsu Purebred Beef Herds, R.J. Pruitt, R.M. Haigh
South Dakota Beef Report, 1987
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, reproductive physiology, beef production and livestock evaluation courses. Current reproductive physiology research under the direction of Dr. Herley Miller that involves this herd 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, FFA and other educational events. In addition to providing research information and …
Interpreting Experimental Results, D.M. Marshall
Interpreting Experimental Results, D.M. Marshall
South Dakota Beef Report, 1987
No abstract provided.
1987 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
1987 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
South Dakota Beef Report, 1987
This is the complete 1987 South Dakota Beef Report.
Characterization Of The Muscles Within The Beef Forequarter, R.C. Johnson, C.M. Chen, T.S. Muller, W.J. Costello, J.R. Romans, K.W. Jones
Characterization Of The Muscles Within The Beef Forequarter, R.C. Johnson, C.M. Chen, T.S. Muller, W.J. Costello, J.R. Romans, K.W. Jones
South Dakota Beef Report, 1987
Thirty - four muscles/muscle groups, each greater than .1 kg, were dissected from 16 forequarters to establish a data base of individual muscle yields, palatability profiles and chemical composition. Carcass data from the 16 steers revealed the following averages: carcass weight - 288.4 kg, yield grade - 3.2, and quality grade – low choice. Individual muscle yields, tenderness profiles and chemical analyses indicated that the muscles within the forequarter are extremely variable. However, several of the larger muscles within the forequarter possess tenderness profiles comparable to the longissimus dorsi, the major muscle within rib steaks. This study suggests that maximum …