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South Dakota State University

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1992

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Optimum Monensin Levels In Receiving Diets For Newly Weaned Calves, R. H. Pritchard, J. U. Thomson Jan 1992

Optimum Monensin Levels In Receiving Diets For Newly Weaned Calves, R. H. Pritchard, J. U. Thomson

South Dakota Beef Report, 1992

This research addressed the effects of dietary monensin on the performance and health of steer calves weaned and shipped directly to the feedlot. Feedlot receiving diets were based on corn silage and contained 0, 10, 20, or 30 g/ton monensin. Calves were allowed ad libitum access to feed for 85 days to determine the effects of monensin level on dry matter intake, average daily gain, and fecal shedding of coccidia oocysts. Higher levels of monensin caused decreases (P<.05) in dry matter intake during the initial feeding period. Gains were not affected by monensin during this period and as a result feed efficiency was improved (P<.05) when diets contained 20 or 30 g of monensin per ton. Cumulative 85-day feedlot performance was not affected by treatment. Over 90% of all calves were shedding coccidia oocyst when they arrived in the feedlot. The number of calves shedding oocysts was consistently reduced by monensin after 18 days postweaning.


Combination Of Synovex-S¹ And Finaplix-S² For Yearling Steers, J. J. Wagner, R. H. Pritchard Jan 1992

Combination Of Synovex-S¹ And Finaplix-S² For Yearling Steers, J. J. Wagner, R. H. Pritchard

South Dakota Beef Report, 1992

Two hundred seventy-seven crossbred yearling steers (719 Ib) were utilized in a 3-year study to determine the effect of combinations of Synovex-S and Finaplix-S on daily gain and carcass merit. Treatments included no implant (C), implanted with Synovex-S on day 1 and Synovex-S on about day 60 (SS), and implanted with Synovex-S on day 1 and the combination of Synovex-S and Finaplix-S on about day 60 (SSF). In year 1, all steers were slaughtered after 124 days on feed. In year 2, steers were slaughtered after 120, 134, or 148 days on feed. In year 3, steers were slaughtered after …


Implant Combinations And Reimplanting Strategies For Yearling Steers Fed High Concentrate Diets, R. H. Pritchard, M. A. Robbins, D. H. Gee Jan 1992

Implant Combinations And Reimplanting Strategies For Yearling Steers Fed High Concentrate Diets, R. H. Pritchard, M. A. Robbins, D. H. Gee

South Dakota Beef Report, 1992

Crossbred yearling steers were used to determine the relative efficacy of specific anabolic implant combinations and sequences on feedlot performance and carcass traits. Steers were fed a high concentrate finishing diet for 112 days. lmplanting was done on days 1 and 42 of the feeding period. lmplanting improved (P < .05) average daily gain (ADG) 22% and feed efficiency 15%. Implant treatment generally increased dry matter intake. Lmplanting increased (P<.05) the rib eye area of carcasses 6.5% and tended to cause a reduction in percentage choice carcasses. The percentage of abscessed implants ranged from < 1 % to 10%, depending on the type of implant used even though implant needles were disinfected between each use.


Breeding System Effects On Production Efficiency Through Weaning-Preliminary Results, D. M. Marshall Jan 1992

Breeding System Effects On Production Efficiency Through Weaning-Preliminary Results, D. M. Marshall

South Dakota Beef Report, 1992

Preliminary results are presented on production efficiency for a comparison of two-breed rotational crossbreeding to the terminal phase of a rotational-terminal combination system with Charolais as the terminal sire breed. The breeding system comparisons were made within each of three types of dam: Simmental x Hereford, Angus x Hereford, and Tarentaise x Hereford. The two breeding systems had similar average values for dam size, condition score, and feed ME through weaning. Results indicate an increase for terminal matings compared to rotational matings in terms of weaning weight and efficiency ratio (calf weaning weight/dam and calf feed ME) within the Angus …


Effect Of Source And Level Of Supplemental Protein On Performance Of Postpartum Range Cows, M. C. Namminga, R. J. Pruitt Jan 1992

Effect Of Source And Level Of Supplemental Protein On Performance Of Postpartum Range Cows, M. C. Namminga, R. J. Pruitt

South Dakota Beef Report, 1992

Two postpartum grazing trials were conducted from early March to mid May in consecutive years to determine the effects of supplemental rumen escape protein on the performance of spring calving beef cows grazing native range. Simmental x Angus cows were allotted within 7 to 14 days of calving to three supplement treatments formulated to provide equal amounts of energy from corn, soybean meal, and a combination of blood meal and corn gluten meal. Cows supplemented with corn lost more weight than cows supplemented with soybean meal. Supplemental escape protein did not improve weight gains over the soybean meal supplement. Supplemental …


Effects Of Level Of Concentrate And Forage Availability On The Performance Of Beef Cows Grazing Winter Range, M. C. Namminga, R. J. Pruitt, C. A. Tusler, P. S. Johnson Jan 1992

Effects Of Level Of Concentrate And Forage Availability On The Performance Of Beef Cows Grazing Winter Range, M. C. Namminga, R. J. Pruitt, C. A. Tusler, P. S. Johnson

South Dakota Beef Report, 1992

Two winter grazing trials were conducted on consecutive years to determine the effect of level of concentrate supplement and amount of forage available on performance of cows grazing dormant winter range. Simmental x Angus cows were fed concentrate supplements containing combinations of corn and soybean meal at either high, medium or low levels. Supplements were formulated to provide .7 Ib of crude protein during year 1 and .51 Ib of rumen degradable crude protein in year 2. Two pastures with differing amounts of available forage were grazed each year. In year 1, the amount of available forage had a greater …


In Vitro Analysis Of Drought Stressed, Chopped Sunflower Heads As A Protein Supplement For Cattle Grazing Corn Crop Residues, D. U. Thomson, R. H. Pritchard Jan 1992

In Vitro Analysis Of Drought Stressed, Chopped Sunflower Heads As A Protein Supplement For Cattle Grazing Corn Crop Residues, D. U. Thomson, R. H. Pritchard

South Dakota Beef Report, 1992

The suitability of drought stressed, chopped sunflower heads as an energy and crude protein supplement to low quality forages was evaluated using in vitro fermentation techniques. Sources of supplemental crude protein used in comparisons were drought stressed, chopped sunflower heads, soybean meal, soybeans, and urea. These crude protein sources were added to cornstalks to produce substrates containing 6, 8, 10, 12, and 15% crude protein. Observed fermentable dry matter was higher than the estimated fermentable dry matters, indicating positive associative effects of crude protein level. Similar differences in observed and estimated fermentable dry matters occurred among soybean meal, soybean, and …


Chaps Summary For South Dakota, 1991, D. L. Boggs Jan 1992

Chaps Summary For South Dakota, 1991, D. L. Boggs

South Dakota Beef Report, 1992

Calving distribution and calf performance data were summarized from the CHAPS (Cow Herd Appraisal of Performance Software) analyses of 61 South Dakota cow herds. CHAPS uses beef cow weaning weight records to calculate adjusted 205-day weights and ratios, keep lifetime production records on cows, calculate Most Probable Producing Ability estimates for cows, produce a sire summary and analyze production according to cow age and 21 -day calving periods. The 1991 summary represents 6,196 cows for an average of 102 cows per herd. The herds ranged in size from 19 to 277 head. The average midpoint of the calving season for …


Interpreting Experimental Results, D. M. Marshall Jan 1992

Interpreting Experimental Results, D. M. Marshall

South Dakota Beef Report, 1992

No abstract provided.


South Dakota Library Network Information 1992, South Dakota Library Network Jan 1992

South Dakota Library Network Information 1992, South Dakota Library Network

South Dakota Newspaper Indexes and SDLN Reports

An annual report from the South Dakota Library Network for the year of 1992.


1991-1992 Dairy Digest, South Dakota State University Dairy Club Jan 1992

1991-1992 Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


1992 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 Jan 1992

1992 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, 1992

This is the complete 1992 South Dakota Beef Report.