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- Electronic Theses and Dissertations (11)
- South Dakota Beef Report, 1993 (4)
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- South Dakota Beef Report, 1986 (2)
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- South Dakota Beef Report, 1992 (1)
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- South Dakota Beef Report, 2010 (1)
- South Dakota Beef Report, 2012 (1)
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Articles 1 - 30 of 33
Full-Text Articles in Life Sciences
Fecal Near Infrared Reflectance Spectroscopy (Nirs) And The Nutrition Balance Analyzer (Nutbal) Case Study In South Dakota, A. A. Harty, K. C. Olson
Fecal Near Infrared Reflectance Spectroscopy (Nirs) And The Nutrition Balance Analyzer (Nutbal) Case Study In South Dakota, A. A. Harty, K. C. Olson
SDSU Beef Day 2020 Summary Publication
The objective of this study was to compare fecal near infrared reflectance spectroscopy (NIRS) and the nutrition balance analyzer (NUTBAL) results with diet samples and cattle performance to determine if fecal NIRS and NUTBAL can accurately predict forage quality and cattle performance in South Dakota.
Optimization Of Reproductive Success In Beef Cattle By Implementation Of Estrus Resynchronization, Nutritional Management, And Evaluation Of Disease Prevalance, Kaitlin M. Epperson
Optimization Of Reproductive Success In Beef Cattle By Implementation Of Estrus Resynchronization, Nutritional Management, And Evaluation Of Disease Prevalance, Kaitlin M. Epperson
Electronic Theses and Dissertations
The beef industry is a unique community of operations that employ different management techniques to accomplish a similar goal. Like other facets of animal agriculture, profitability of the beef industry is heavily reliant upon the implemented management practices. Reproductive efficiency is an area of management that has great potential to positively influence the success of beef production. Through the use of reproductive technologies such as estrus synchronization and AI, a greater percentage of females can become bred to superior sires, breeding and calving seasons can be shortened, calf uniformity increased, and economic return maximized (Odde, 1990; Rodgers et al., 2012; …
Impacts Of Small Intestinal Enzyme Activity And Varying Corn Grain Processing Types On Feeding Behavior, And Growth Performance Of Finishing Beef Steers, Wyatt Smith
Electronic Theses and Dissertations
The objective of this study was to quantify the differences in activity of jejunal maltase and isomaltase between 2 groups of steers with average dry matter intake (DMI) and differing average daily gain (ADG). Dry matter intake and ADG were measured in crossbred steers (n = 69). Jejunal mucosal samples were collected from 8 steers with the greatest (high) or least (low) ADG and average DMI (± 0.55 standard deviation). Homogenates of jejunal mucosa were incubated with increasing amounts of maltose and isomaltose to determine the disaccharidase kinetics. Neither the Km of isomaltase (P = 0.15) or maltase (P = …
Anabolic Hormone Exposure During Various Stages Of Growth: Effects On Post-Weaning Performance, Frame Size, And Carcass Characteristics Of Calf-Fed Steers, Wesley W. Gentry
Anabolic Hormone Exposure During Various Stages Of Growth: Effects On Post-Weaning Performance, Frame Size, And Carcass Characteristics Of Calf-Fed Steers, Wesley W. Gentry
Electronic Theses and Dissertations
The growth promoting activity of implants have been documented. However, stage of growth in which the implant is administered may alter growth performance and carcass traits. An experiment was conducted to examine the effects of administering a conventional implant (Synovex C; SYN-C), or an extended-release combination implant (Synovex One Grass; ONE-G) to suckling steer calves on weaning weight, post-weaning growth performance, and carcass characteristics. Suckling steer calves were either not implanted (NONE) or were implanted with SYN-C or ONE-G. Steer calves were predominantly 30 to 60 d of age when implants were administered. Steers were weaned 176 d post-suckling implant …
Effects Of Enzymatically Hydrolyzed Yeast Supplementation And Supplementation Frequency On Immune Parameters, Performance, And Digestibility Among Periparturient Beef Cows And Calves, Janine Swartz
Electronic Theses and Dissertations
Effects of enzymatically hydrolyzed yeast (EHY) and supplementation frequency (FREQ) on immune parameters among beef cows and calves was evaluated. Eighty multiparous (parity = 4.2 ± 0.3) cows were fed a common brome hay-based diet (CP = 8.0 ± 0.17%). Cows were blocked by expected calving date and stratified by body condition score (BCS) before random assignment of treatment. Beginning 88 ± 5 d prior to parturition, cows were provided 1 kg daily or 3 kg every 3 d of a soybean hull-based supplement (CP = 34.0, % of DM) that contained 0 or 3 g/kg EHY. The daily supplement …
What Is The Value Of Corn Residue To Grazing Cattle?, Emily Ann Petzel
What Is The Value Of Corn Residue To Grazing Cattle?, Emily Ann Petzel
Electronic Theses and Dissertations
The United States produces over 370,840,000,000 kg of corn grain and concomitantly more than 303,410,000,000 kg DM of non-grain corn residues (i.e., leaves, husks and stalk) from grain production annually. Although there is an abundance of available corn residue, only 12% of land planted to corn is grazed after harvest (Schmer, 2017), and based on current estimates of nutrient composition (NASEM, 2016), while 30% of available corn residues could maintain the entire United States cow herd. Grazing cattle often select diets with greater nutrient density and digestibility in comparison to the overall biomass available; however, most estimates of nutrient density …
Can Solvent-Or Mechanically-Extracted Carinata Meal Be Used As An Effective Source Of Supplemental Protein To Cows Fed Poor Quality Forages?, Emily Jacklyn Rosenthal
Can Solvent-Or Mechanically-Extracted Carinata Meal Be Used As An Effective Source Of Supplemental Protein To Cows Fed Poor Quality Forages?, Emily Jacklyn Rosenthal
Electronic Theses and Dissertations
Brassica carinata is an oilseed crop that requires a relatively short growing season and produces high crop yields. It is a great source for aviation biofuel, however it produces a large amount of waste that may be used as a protein supplement for cattle. We tested the effects of solvent- or mechanically-extracted carinata meal as a protein supplement to ad libitum ground or long-stem corn residue (i.e., corn plant left over from grain harvest) had on cow performance and digestibility. Fifty-six non-pregnant cows in 8 pens had ad libitum access to either long-stem or ground corn residue in addition to …
Mob Vs. Rotational Grazing: Impact On Forage Use And Artemisia Absinthium, Heidi Reed, Alexander Smart, David E. Clay, Michelle Ohrtman, Sharon A. Clay
Mob Vs. Rotational Grazing: Impact On Forage Use And Artemisia Absinthium, Heidi Reed, Alexander Smart, David E. Clay, Michelle Ohrtman, Sharon A. Clay
Agronomy, Horticulture and Plant Science Faculty Publications
Short duration (≤24 h), high stocking density grazing systems (e.g., mob grazing) mimics historic prairie grazing patterns of American bison (Bison bison), and should minimize selective grazing. We compared mob [125 cow-calf pairs on either 0.65 ha for 12 h; or 1.3 ha for 24 h] vs. rotational [25 cow-calf pairs on 8.1 ha for 20 days starting in mid-May with or without 2,4-D application prior to grazing; and 15 days starting mid-April (no herbicide)] grazing systems based on forage utilization and impact to Artemisia absinthium (absinth wormwood) in a tall grass pasture of Eastern South Dakota. Grass …
Lysine Bioavailability Of Two Lipid Coated Lysine Products After Exposure To Silages With Different Acidity, Jessica N. Reiners
Lysine Bioavailability Of Two Lipid Coated Lysine Products After Exposure To Silages With Different Acidity, Jessica N. Reiners
Electronic Theses and Dissertations
Three experiments were conducted to determine bioavailability of 2 lipid coated Lys products (EB and EC). In an initial experiment, Lys disassociation from 2 lipid coated Lys products was best described by a first-order kinetic model after incubation in alfalfa- or corn-silage at 2 different amounts of acidity. Greater amounts of Lys immediately disassociated from EC (15.7%) than EB (4.9%; P < 0.05). Lysine that initially disassociated in corn silage at low pH (0.5%) was less than corn silage at a more neutral pH (18.7%), whereas Lys that initially disassociated in alfalfa silage was not affected (P = 0.26) by pH. Lysine that slowly disassociated from lipid coated Lys differed by product (P = 0.01), and acidity (P < 0.01) affected amounts of Lys that slowly disassociated differently within alfalfa- or corn-silage (pH × silage = 0.02). Greater amounts of Lys disassociated from acidic corn silage (79%) than neutral corn silage (32%; P = 0.01). However, amounts of Lys that slowly disassociated from alfalfa silage was not impacted by acidity (P = 0.40). Additionally, amounts of Lys that did not disassociate (P < 0.04) within 24 h were greater (P < 0.04) when lipid coated Lys was mixed with neutral silages (44%) compared to acidic silages (21%). However, rate of Lys disassociation from lipid coated Lys products was not affected by acidity or exposure to alfalfa- or corn-silage (P = 0.21). In a second experiment, we measured in vitro ammonia release from EB and EC after mixing with alfalfa- or corn-silage at different amounts of acidity with or without monensin. Ammonia release from Lys increased (Quadratic < 0.01) with greater amounts of time; however, differences between in vitro cultures with added Lys and negative control were not detected until 36 h of incubation. By 36 h, all cultures containing added Lys were greater than the negative control. After 42 h of incubation, ammonia release from Lys was greatest from EC and when lipid and Lys-HCl in amounts identical to EB were provided to cultures; EB, Lys-HCl, and lipid and Lys in amounts identical to EC were intermediate. After 48 h of incubation, ammonia release from Lys in EB was greatest and Lys-HCl was least, but EC and amounts of lipid and Lys-HCl identical to either EB or EC were intermediate. Ammonia release from Lys were less from cultures containing monensin after 48 h of incubation. In experiment 3, 9 white-faced ewes (70.1 ± 5.2 kg BW; 5.3 ± 0.6 yr) were used to measure Lys bioavailability by a slope-ratio analysis from 2 lipid coated Lys products and Lys-HCl after mixing in corn silage. Plasma Lys concentrations increased (Linear < 0.01) in response to abomasal infusion of Lys, and bioavailability of EB, EC, and Lys- HCl were calculated to be 10.74%, 18.82%, and 11.87%, respectively. However, increases in plasma Lys from EB (Linear = 0.41) and Lys-HCl (Linear = 0.36) were not different from plasma Lys supported by diet alone, but the rate of increase in plasma Lys in response to EC tended (Linear = 0.15) to be greater than plasma Lys levels from diet. Evidently, manufacturing method among lipid coated Lys products as well as physical and chemical characteristics of diet can impact availability of Lys from lipid coated Lys products.
Factors Affecting Feedlots' Decisions On Cattle Marketing Options: A National Study, Charlotte Owusu-Smart
Factors Affecting Feedlots' Decisions On Cattle Marketing Options: A National Study, Charlotte Owusu-Smart
Electronic Theses and Dissertations
This thesis investigates the economic implication of changing slaughter volume patterns across the cash and contract markets in the US cattle industry. Weekly time series data that spans from November 2002 to December 2015 was used in the analysis. Empirical evidence suggests that Mandatory Price Reporting (MPR) played an important role in changing slaughter volumes across the cash and contract markets. Additionally, price of feeder cattle, cattle quality characteristics (Choice-Select spread and the percentage of animals grading choice or better) among others influence feedlots’ decision to use a particular marketing arrangement.
Effect Of Grazing Pressure On Cattle Grazing Cool Season Annual Forages, Brooke Brunsvig
Effect Of Grazing Pressure On Cattle Grazing Cool Season Annual Forages, Brooke Brunsvig
Electronic Theses and Dissertations
Ruminants can use plant fiber to produce food products that provide nourishment to humans. However, a precise understanding of specific plants selected by grazing ruminants remains elusive. Many long- and short-term factors impact cattle grazing behavior. Ultimately, grazing behavior can affect forage available for grazing, nutrient density of forage, dry matter intake, and animal performance. A myriad of grazing management strategies have been developed utilizing animal behavior to allow more efficient use of forage resources. Many management strategies based on manipulation of grazing behavior are simple and cost effective. Optimal performance of individual animals and amount of animal products produced …
Effects Of Small Intestinal Starch Digestion And Dietary Lipid On Efficiency Of Nitrogen Use In Cattle, Ethan J. Blom
Effects Of Small Intestinal Starch Digestion And Dietary Lipid On Efficiency Of Nitrogen Use In Cattle, Ethan J. Blom
Electronic Theses and Dissertations
The objective of this research was to determine the effects of increases in energy available for gain from increased small intestinal starch digestion (SISD) and dietary lipid source and amount on the efficiency of N use in cattle. Five ruminally, duodenally, and ileally cannulated steers were placed in a 5 × 5 Latin square. Each received duodenal infusion of 1.5 ± 0.08 kg/d raw cornstarch and either 0, 30.9 ± 0.59, 62.4 ± 1.16, or 120.4 ± 3.39 g/d Glu, or 387.9 ± 17.47 g/d casein. Casein increased (P = 0.05) SISD. Similarly, greater duodenal Glu linearly (P = 0.02) …
Energy Status Of Steers Dictates Effectiveness Of Glycerol Inclusion In High-Roughage And High-Concentrate Feedlot Diets, Erin M. Rife
Energy Status Of Steers Dictates Effectiveness Of Glycerol Inclusion In High-Roughage And High-Concentrate Feedlot Diets, Erin M. Rife
Electronic Theses and Dissertations
The objective of this research was to determine how to use glycerol as an effective source of energy in ruminant diets. Steer calves were used in a 56 d backgrounding study (n=128; Initial BW=340 ± 15 kg) and 105 d finishing study (n=120; Initial BW=420 ± 20 kg). Dietary treatments during backgrounding included 0, 8, 16, and 24% glycerol replacing corn silage in corn silage-based diets. Steers continued on within relative levels of dietary glycerol with finishing diets consisting of 0, 5, 10, and 15% glycerol replacing corn. Cumulative DMI, ADG, and G:F increased linearly (P
2013 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
2013 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
South Dakota Beef Report, 2013
This is the 2013 South Dakota Beef Report produced by the SDSU Department of Animal Sciences in conjunction with the Agricultural Experiment Station , and the SDSU Cooperative Extension. The articles published in this report summarize many of the beef cattle research activities conducted at South Dakota State University during 2013. The articles in this report have many levels of application. Some information has immediate application for your farm, ranch, or agribusiness. The articles include information on nutrition,management, health, growth and development, and economics of the cattle and beef industry in South Dakota.
2012 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
2012 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
South Dakota Beef Report, 2012
This is the 2013 South Dakota Beef Report produced by the SDSU Department of Animal Sciences in conjunction with the Agricultural Experiment Station , and the SDSU Cooperative Extension. The articles published in this report summarize many of the beef cattle research activities conducted at South Dakota State University during 2013. The articles in this report have many levels of application. Some information has immediate application for your farm, ranch, or agribusiness. The articles include information on nutrition,management, health, growth and development, and economics of the cattle and beef industry in South Dakota.
2010 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
2010 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, 2010
This is the 2010 South Dakota Beef Report produced by the SDSU Department of Animal Sciences in conjunction with the Agricultural Experiment Station , and the SDSU Cooperative Extension. The articles published in this report summarize many of the beef cattle research activities conducted at South Dakota State University during 2010. The articles in this report have many levels of application. Some information has immediate application for your farm, ranch, or agribusiness. The articles include information on nutrition,management, health, growth and development, and economics of the cattle and beef industry in South Dakota.
Cottonwood And Antelope Range Livestock Research Stations Unit Report, Kenneth C. Olson
Cottonwood And Antelope Range Livestock Research Stations Unit Report, Kenneth C. Olson
South Dakota Beef Report, 2007
Two research stations, the Cottonwood and Antelope Range Livestock Research Stations, are located in western South Dakota that allow research projects focused on needs of range livestock producers in that region. The stations are comprised primarily of native rangeland that is grazed by cattle at both stations, and also by sheep at Antelope. The philosophy of the research efforts has been focused on conducting applied research to solve problems and address rangeland and livestock management opportunities relevant to the livestock producers and land mangers of the region.
Use Of Corn Co-Products In Soybean Hull-Based Feedlot Receiving Diets, Chad J. Mueller, Donald L. Boggs
Use Of Corn Co-Products In Soybean Hull-Based Feedlot Receiving Diets, Chad J. Mueller, Donald L. Boggs
South Dakota Beef Report, 2005
The use of different supplemental protein sources with soybean hulls in receiving cattle diets were evaluated using 200 Angus steer calves. Diets contained either corn and soybean meal (C-SBM), or soybean hulls with soybean meal (H-SBM), dried corn gluten feed (H-DCGF) or dried distillers grains plus solubles (H-DDGS). The replacement of corn (C-SBM) with soybean hulls (H-SBM) stimulated intake within the first 14 d of the receiving period and throughout the entire growing period (52 d). Supplementing soybean hulls with corn origin protein (COP) versus soybean meal did not result in any performance differences throughout the feeding period. Within the …
Sdsu Cow/Calf Teaching And Research Unit, Dick Pruitt, Kevin Vanderwal, Anna Drew
Sdsu Cow/Calf Teaching And Research Unit, Dick Pruitt, Kevin Vanderwal, Anna Drew
South Dakota Beef Report, 2005
The SDSU Cow/Calf Unit (CCU) provides cattle and facilities for numerous Animal Science and Range Science classes and a variety of research projects. The CCU also provides cattle for the SDSU Little International, Block & Bridle Club activities, numerous judging team workouts, and other activities that bring potential students to the SDSU campus. Kevin VanderWal and Anna Drew along with part-time student employees, manage the herd, collect research data, and assist with numerous beef cattle activities throughout the year.
Effectiveness Of Dried Distillers Grains With Solubles As A Replacement For Oilseed Meal In Supplements For Cattle Consuming Poor Quality Forage, Heidi Doering-Resch, Cody Wright, Kent Tjardes, George Perry, Kelly Bruns, Bradley Rops
Effectiveness Of Dried Distillers Grains With Solubles As A Replacement For Oilseed Meal In Supplements For Cattle Consuming Poor Quality Forage, Heidi Doering-Resch, Cody Wright, Kent Tjardes, George Perry, Kelly Bruns, Bradley Rops
South Dakota Beef Report, 2005
A two-year study was conducted at the South Dakota State University Southeast Research Farm in Beresford, SD, to determine the effects of feeding supplemental dried distillers grains with solubles (DDGS) on the performance of mid-gestation and non-gestating, non-lactating beef cows. Ninety-six gestating beef cows (initial BW = 1276.4 ± 22.2; initial BCS = 4.7 ± 0.09) and 96 non-gestating, non-lactating beef cows (initial BW = 1214.0 ± 20.8; initial BCS = 5.4 ± 0.10) were used for year 1 and year 2, respectively. Cows were stratified by weight and allocated to one of 15 pens. Pens were then randomly assigned …
Associations Of A Leptin Gene Polymorphism With Beef Carcass Traits, Chad D. Bierman, Donald M. Marshall, Emilie Campbell, Nels H. Granholm
Associations Of A Leptin Gene Polymorphism With Beef Carcass Traits, Chad D. Bierman, Donald M. Marshall, Emilie Campbell, Nels H. Granholm
South Dakota Beef Report, 2003
The objective was to evaluate associations of leptin genotype with fat and muscle traits in cattle. A single nucleotide polymorphism located in exon 2 of the leptin gene in cattle codes for an amino acid change from arginine (R) to cysteine (C). Genotypes for the polymorphism were determined on 492 crossbred calves by AciI digestion of amplified PCR product (C allele: 130bp; R allele: 73bp and 57bp). Data were analyzed by least-squares, accounting for effects of genotype, sex, year, location, breed-type, and calf sire. Genotype was not significantly associated with carcass weight or ribeye area in any of the analyses. …
Relationship Of Beef Sire Birth Weight And Weaning Weight Expected Progeny Differences To Actual Performance Of Crossbred Offspring, M. B. Long, D. M. Marshall
Relationship Of Beef Sire Birth Weight And Weaning Weight Expected Progeny Differences To Actual Performance Of Crossbred Offspring, M. B. Long, D. M. Marshall
South Dakota Beef Report, 1994
Performance records from 1982 to 1992 on 1365 calves for birth weight (BW) and 1492 calves for weaning weight (WW) were analyzed to estimate relationships of purebred sire expected progeny difference (EPD) values for BW and WW to actual crossbred progeny performance. Sires of the calves were Polled Hereford, Simmental, Angus, Salers, Tarentaise, or Charolais. The pooled-across-breed regressions (Ib/lb + SE) of BW and WW of calves on sire EPD were 1 .I 7 ±.31 and .75 + .28, respectively. Residual correlations of BW with BW EPD and WW with WW EPD were .I6 (P< -01) and .05 (P= .10), respectively. Additional regression and residual correlation analyses were conducted in which records from progeny of low-accuracy sires (Acc. < .50) were deleted. The reduced data set included 967 records for BW and 962 records for WW. The pooled-across-breed regressions (Ib/lb + SE) of BW and WW of calves on higher-accuracy sire EPD were 1.28 + .35 and .71 ± .31, respectively. Residual correlations using higher-accuracy sire data of BW with BW EPD and WW with WW EPD were .I8 (P<.01) and .09 (P = .02). Breeders who use BW and WW EPDs as a selection tool should expect such selection to be effective, on average, and reasonably consistent with theoretical expectation. However, some sires and small progeny groups may not rank as expected based on sire EPDs.
Conventional Versus High Energy Receiving And Step-Up Diets For Feedlot Cattle, C. P. Birkelo, J. Lounsbery
Conventional Versus High Energy Receiving And Step-Up Diets For Feedlot Cattle, C. P. Birkelo, J. Lounsbery
South Dakota Beef Report, 1993
Two hundred sixty-four yearling steers with an initial average weight of 730 Ib were randomly allotted to 24 pens and fed ad libitum either conventional (CONV) receiving or step-up diets (hay content decreased from 50% to 40, 30, 20, and 10% of diet dry matter) or high energy (HE) diets (hay content was maintained throughout at 10% but wet corn distillers grain (WDG) decreased from 43% to 30, 20, 10, and 0%). The feeding of WDG in place of hay was designed to maximize energy intake while not overloading the rumen with starch during the grain adaptation period. Long grass …
Genetic Parameters For Carcass Traits In Beef Cattle, D. M. Marshall
Genetic Parameters For Carcass Traits In Beef Cattle, D. M. Marshall
South Dakota Beef Report, 1993
The recent scientific literature was reviewed to summarize genetic parameters for carcass traits in beef cattle. Heritability estimates were generally moderate to large, in agreement with previous literature estimates. This suggests good potential for making change through genetic selection for a given individual carcass characteristic. However, genetic improvement through multiple-trait selection would be slowed by several important genetic antagonisms between traits, suggesting the use of terminal breeding systems with complementary sire and dam genetic types. Individual and maternal heterosis estimates from age-constant analyses were numerically positive and quite large for fat thickness and tended to be numerically positive and small …
Maternal Performance Of First-Calf Crossbred Beef Cowns In Relation To Sire Expected Progeny Differency (Epds), D. M. Marshall, M. B. Long
Maternal Performance Of First-Calf Crossbred Beef Cowns In Relation To Sire Expected Progeny Differency (Epds), D. M. Marshall, M. B. Long
South Dakota Beef Report, 1993
Cumulative milk production of crossbred daughters of sires of several breeds was estimated using weigh-suckle-weigh procedures. Pooled-across-breed analyses were conducted to determine, in retrospect, relationships of sire expected progeny difference (EPD) values for milk and total maternal value to daughter milk yield and daughter's offspring weaning weight. The pooled coefficient for regression of daughter 214-day milk yield sire milk EPD was 13.4 Ib/lb (residual correlation was .14). The overall mean estimated milk yield was 2,782 Ib, suggesting that a difference in sire milk EPD of 1 Ib corresponded to a difference of approximately 5% in cumulative daughter milk yield. The …
Net Energy Of Soybean Mill Run For Growing Cattle, C. P. Birkelo, D. Thomson
Net Energy Of Soybean Mill Run For Growing Cattle, C. P. Birkelo, D. Thomson
South Dakota Beef Report, 1993
The objective of the experiment was to estimate the net energies for maintenance (NEm) and gain (NEg) of soybean mill run (SMR), a by-product typically containing about 90% soyhulls. Six steers with an average weight of 288 kg were alternately fed pelleted test diets at intakes varying from 3.6 to 9.4 kg per day in an energy balance experiment arranged in a crossover design. The test diets contained either 96.6% alfalfa (ALF) or 46.6% alfalfa and 50.0% soybean mill run (ALFSMR). Energy intake from feed and losses in feces and urine were determined from total collections. Energy lost as methane …
Comparison Of Production Efficiencies When Calves Are Fed In South Dakota Or Texas, R. H. Pritchard, R. L. Preston
Comparison Of Production Efficiencies When Calves Are Fed In South Dakota Or Texas, R. H. Pritchard, R. L. Preston
South Dakota Beef Report, 1992
South Dakota's reputation for harsh winters is frequently cited as a limitation to our competitiveness in cattle feeding. To help quantify the impact of climate on cattle feeding, heifers produced in western South Dakota were fed in eastern South Dakota or in the Texas panhandle. Heifer calves were obtained from two ranches, assembled at SDSU, and sorted into three similar groups. Group 1 remained at the SDSU feedlot, Group 2 was shipped half-way to Texas and returned to SDSU, and Group 3 was sent on to Texas for feeding. These groups allow consideration of climate and transit stress on feedlot …
Effect Of Inoculants On High Moisture Corn Fermentation Characteristics And Cattle Performance, C. P. Birkelo, D. Sorenson
Effect Of Inoculants On High Moisture Corn Fermentation Characteristics And Cattle Performance, C. P. Birkelo, D. Sorenson
South Dakota Beef Report, 1991
High moisture corn was ensiled untreated (treatment 1) or treated with one of three different inoculants (treatment 2 = lactobacillus; treatment 3 = lactobacillus + streptococcus; treatment4 = lactobacillus + serratia), each at two moisture levels (27.2% and 22.4%). lnoculant effects on fermentation were moisture dependent. The pH, acetate concentrations and dry matter losses were generally lower and lactate concentrations higher due to inoculation at 27.2% moisture. Overall, treatment 3 was somewhat more effective than treatments 2 or 4. Inoculation effects were generally less at 22.4% moisture. lnoculant effects on soluble N were small and probably of little nutritional importance. …
Substitution Of Rolled Barley For Whole Shelled Corn In Finishing Diets For Steers, R. H. Pritchard, M. A. Robbins
Substitution Of Rolled Barley For Whole Shelled Corn In Finishing Diets For Steers, R. H. Pritchard, M. A. Robbins
South Dakota Beef Report, 1991
Rolled barley was substituted for 0, 25, 50, 75 or 100% of the whole shelled corn in finishing diets fed to steers for 84 days. Increasing barley substitution resulted in a linear (P=.12) decrease in ADG and a quadratic (P<.05) decrease in DM1 with no effect on feed conversion. At the termination of the study, barley substitution caused a linear reduction in carcass weight (P<.01) and dressing percent (P<.01). The 100% substitution of barley for corn reduced (Pc.05) the percentage of carcasses grading choice. Dietary net energy values calculated from steer weights, gain and feed intake increased linearly (P<.10) as barley content of the diets increased, possibly reflecting positive associative effects. Published energy values for barley may not be suitable for least cost pricing in all feeding situations.
Relationship Of Maintenance Energy Requirements To Beef Female Production Efficiency, S. A. Shuey, C. P. Birkelo, D. M. Marshall
Relationship Of Maintenance Energy Requirements To Beef Female Production Efficiency, S. A. Shuey, C. P. Birkelo, D. M. Marshall
South Dakota Beef Report, 1991
Thirty-three Hereford x Angus first-calf females were used to determine the relationship between production efficiency (PE = calf weaning weight/l2month dam + calf ME intake) and nonlactating dam maintenance ME requirements (MEm) and its components k, and FHP. Substantial variation existed in PE and energy parameters among individuals. However, maintenance metabolism of the dam contributed little to explaining PE variation (Fs.04). This may have been due to the high plane of nutrition provided. Additionally, FHP was closely related to MEm (r2 = .69), suggesting it could be used as an indicator of fed maintenance requirements.