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Articles 1 - 30 of 41
Full-Text Articles in Life Sciences
Effect Of Different Extrusion Processing Parameters On Physical Properties Of Soy White Flakes And High Protein Distillers Dried Grains-Based Extruded Aquafeeds, Sushil Kumar Singh, Kasiviswanathan Muthukumarappan
Effect Of Different Extrusion Processing Parameters On Physical Properties Of Soy White Flakes And High Protein Distillers Dried Grains-Based Extruded Aquafeeds, Sushil Kumar Singh, Kasiviswanathan Muthukumarappan
Agricultural and Biosystems Engineering Publications
Nutritionally balanced ingredient blends for catla (Catla catla), belonging to the family Cyprinidae, were extruded using single screw extruder. The extrusion was carried out at five levels of soy white flakes content (21%, 29%, 40%, 52%, and 59% db), five levels of moisture content (15, 19, 25, 31, and 35% db) and five levels of barrel temperature (100, 110, 125, 140, and 150 ºC) using three different die nozzles (having L/D ratios 3.33, 5.83, and 7.25). Blends with net protein content of 32.5% contains soy white flakes, along with high protein distillers dried grains (HP-DDG), corn flour, corn gluten meal, …
Southeast South Dakota Experiment Farm Annual Progress Report: 2014, Agricultural Experiment Station
Southeast South Dakota Experiment Farm Annual Progress Report: 2014, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This document highlights 31 crop and livestock research and demonstration reports from projects conducted at Southeast Research Farm in 2014. It is published by the South Dakota Agricultural Experiment Station and Cooperative Extension Service at South Dakota State University in cooperation with the Southeast South Dakota Experiment Farm Corporation. Reports in this document include information on: weather and climate data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, swine research, and pest and weed control.
Comparison Of Three Cidr-Based Fixed-Time Ai Protocols In Beef Heifers, G.A. Bridges, J.A. Walker, S.L. Lake, S.G. Kruse, S.L. Bird, B.J. Funnell, R. Arias, J.K. Grant
Comparison Of Three Cidr-Based Fixed-Time Ai Protocols In Beef Heifers, G.A. Bridges, J.A. Walker, S.L. Lake, S.G. Kruse, S.L. Bird, B.J. Funnell, R. Arias, J.K. Grant
Animal Science Faculty Publications
Several effective fixed-time AI (FTAI) protocols have been developed to facilitate AI in beef heifers that circumvent the need for estrus detection. Among these are the 5-d CO-Synch + controlled intravaginal progesterone insert (CIDR) protocol (5dCO), PGF2α (PG) 6-d CIDR protocol (PG-6dCIDR), and 14-d CIDR-PG protocol (14dCIDR-PG). Although each of these protocols varies in duration and approach to synchronizing estrus and ovulation, each has been reported as an effective method to facilitate FTAI in beef heifers. Therefore, the objective of this study was to compare FTAI pregnancy rates in beef heifers synchronized with these 3 CIDR-based protocols. Virgin beef heifers …
Invasion Is Contingent On Species Assemblage And Invasive Species Identity Inexperimental Rehabilitation Plots, A. Joshua Leffler, Eamonn D. Leonard, Jeremy J. James, Thomas A. Monaco
Invasion Is Contingent On Species Assemblage And Invasive Species Identity Inexperimental Rehabilitation Plots, A. Joshua Leffler, Eamonn D. Leonard, Jeremy J. James, Thomas A. Monaco
Natural Resource Management Faculty Publications
Ecological studies often suggest that diverse communities are most resistant to invasion by exotic plants, but relatively few local species may be available to a rehabilitation practitioner. We examine the ability of monocultures and diverse assemblages to resist invasion by an exotic annual grass (cheatgrass) and an exotic biennial forb (dyer’s woad) in experimental rehabilitation plots. We constructed seven assemblages that included three monocultures of grass, forb, or shrub; three four-species mixtures of grasses, forbs, or shrubs; and a three-species mixture of one species from each growth form in an experimental field setting to test resistance to invasion. Assemblages were …
News Of The Department Of Animal Science, Department Of Animal Science
News Of The Department Of Animal Science, Department Of Animal Science
Animal Science Newsletters
No abstract provided.
Ad Hoc Smoothing Parameter Performance In Kernel Estimates Of Gps-Derived Home Ranges, Krysten L. Schuler, Greg M. Schroeder, Jonathan A. Jenks, John G. Kie
Ad Hoc Smoothing Parameter Performance In Kernel Estimates Of Gps-Derived Home Ranges, Krysten L. Schuler, Greg M. Schroeder, Jonathan A. Jenks, John G. Kie
Natural Resource Management Faculty Publications
Accuracy of home-range estimates in animals is influenced by a variety of factors, such as method of analysis and number of locations, but animal space use is less often considered and frequently over-generalized through simulations. Our objective was to assess effect of an ad hoc (h_ad hoc)smoothing parameter in kernel analysis from two species that were predicted to have different patterns of utilization distributions across a range of sample sizes. We evaluated variation in home-range estimates with location data collected from GPS collars on two species: mule deer Odocoileus hemionus and coyotes Canis latrans. We calculated home ranges using …
Re-Evaluating Neonatal-Age Models For Ungulates: Does Model Choice Affect Survival Estimates?, Troy W. Grovenburg, Kevin L. Monteith, Christopher N. Jacques, Robert W. Klaver, Christopher S. Deperno, Sophie L. Gilbert, Todd J. Brinkman, Kyle B. Monteith, Joshua B. Smith, Vernon C. Bleich, Christopher C. Swanson, Jonathan A. Jenks
Re-Evaluating Neonatal-Age Models For Ungulates: Does Model Choice Affect Survival Estimates?, Troy W. Grovenburg, Kevin L. Monteith, Christopher N. Jacques, Robert W. Klaver, Christopher S. Deperno, Sophie L. Gilbert, Todd J. Brinkman, Kyle B. Monteith, Joshua B. Smith, Vernon C. Bleich, Christopher C. Swanson, Jonathan A. Jenks
Natural Resource Management Faculty Publications
New-hoof growth is regarded as the most reliable metric for predicting age of newborn ungulates, but variation in estimated age among hoof-growth equations that have been developed may affect estimates of survival in staggered-entry models. We used known-age newborns to evaluate variation in age estimates among existing hoof-growth equations and to determine the consequences of that variation on survival estimates. During 2001–2009, we captured and radiocollared 174 newborn (#24-hrs old) ungulates: 76 white-tailed deer (Odocoileus virginianus) in Minnesota and South Dakota, 61 mule deer (O. hemionus) in California, and 37 pronghorn (Antilocapra americana) in South Dakota. Estimated age of known-age …
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
South Dakota State University Sheep Research Report, 2014
To demonstrate the use of the EAZI-BREED CIDR in ewe reproductive management 6 d, 9 d, or 12 d insertion of the EAZI-BREED CIDR on seasonally anestrous ewes in the Upper Midwest.
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 1), J.E. Held, R.D. Zelinsky, K. Bruns, A. Kolthoff
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 1), J.E. Held, R.D. Zelinsky, K. Bruns, A. Kolthoff
South Dakota State University Sheep Research Report, 2014
To demonstrate the use of the EAZI-BREED CIDR in ewe reproductive management, and evaluate the effect of EAZI-BREED CIDR insertion period of 6 or 12 d on reproductive efficiency in seasonally anestrous ewes in the Upper Midwest.
Effects Of Increasing The Energy Density Of A Lactating Ewe Diet By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs), R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
Effects Of Increasing The Energy Density Of A Lactating Ewe Diet By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs), R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate the effects of increasing the ewe’s dietary energy by replacing hay with SH and DDGS on milk production, nutrient composition, lamb growth, and changes in ewe body weight and body condition score (BCS).
Presence Of Mycoplasma Sp. In Lambs With Lung Lesions, J.A. Daniel, J.E. Held, L. Holler
Presence Of Mycoplasma Sp. In Lambs With Lung Lesions, J.A. Daniel, J.E. Held, L. Holler
South Dakota State University Sheep Research Report, 2014
Objectives: To test the impact of NPCoat administration on the prevalence of lung lesions in lambs.
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
South Dakota State University Sheep Research Report, 2014
To demonstrate the use of the EAZI-BREED CIDR in ewe reproductive management 6 d, 9 d, or 12 d insertion of the EAZI-BREED CIDR on seasonally anestrous ewes in the Upper Midwest.
A Comparison Of Corn Or Soybean Hull Based Diets With Dried Distillers Grain With Solubles (Ddgs) As The Protein Source In Finishing Diets Comparing Lamb Growth, Feed Efficiency, And Carcass Merit, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
A Comparison Of Corn Or Soybean Hull Based Diets With Dried Distillers Grain With Solubles (Ddgs) As The Protein Source In Finishing Diets Comparing Lamb Growth, Feed Efficiency, And Carcass Merit, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate growth, carcass merit and mineral status in wether lambs fed finishing diets formulated with dried distillers grain with solubles (DDGS) and soybean hulls (SH).
Effect Of Vitamin E Supplementation On Reproductive Performance In Spring Mated Ewes, J.E. Held, R. Zelinsky, K. Bruns, C. Wright
Effect Of Vitamin E Supplementation On Reproductive Performance In Spring Mated Ewes, J.E. Held, R. Zelinsky, K. Bruns, C. Wright
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate reproductive performance in commercial Polypay ewes fed supplemental vitamin E at the level recommended in the sheep NRC (1985) compared to the small ruminant NRC (2007) during spring mating.
Effects Of Glycerol And Sire Breed On Growth And Carcass Traits Of Finishing Wether Lambs, R.M. Beck, A.E. Wertz-Lutz, C.L. Wright, J.E. Held
Effects Of Glycerol And Sire Breed On Growth And Carcass Traits Of Finishing Wether Lambs, R.M. Beck, A.E. Wertz-Lutz, C.L. Wright, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate crude glycerin as an energy source for finishing lambs and to determine the effect of sire breed on finishing lamb growth performance and carcass characteristics. In light of previous research, the hypothesis for this experiment was that glycerol would have an energy value similar to that of corn when fed in high concentrate diets to finishing lambs.
Effect Of Level Of Soyhulls On Finishing Lamb Growth Efficiency And Carcass Merit, J.E. Held, R.D. Zelinsky, R. Beck, K. Bruns
Effect Of Level Of Soyhulls On Finishing Lamb Growth Efficiency And Carcass Merit, J.E. Held, R.D. Zelinsky, R. Beck, K. Bruns
South Dakota State University Sheep Research Report, 2014
Objectives: To determine the effects of soyhull (SH) based diets on finishing lamb growth performance, feed efficiency and carcass merit.
2014 South Dakota State University Sheep Research Report, Animal Science Department
2014 South Dakota State University Sheep Research Report, Animal Science Department
South Dakota State University Sheep Research Report, 2014
This is the complete document containing all reports.
Effects Of Increasing Dietary Energy Density By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs) On Nutrient Digestibility And Rumen Physiology, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
Effects Of Increasing Dietary Energy Density By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs) On Nutrient Digestibility And Rumen Physiology, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To determine the effects of increasing dietary energy density in lamb diets from soybean hulls (SH) and dried distillers grain with solubles (DDGS) on nutrient digestibility and rumen physiology.
Dry Matter Intake, Feed Efficiency And Animal Growth Response To Treated Corn Stover Inclusion In Lamb Finishing Diets, P.L. Reading, A. Kolthoff, J.E. Held, K. Bruns
Dry Matter Intake, Feed Efficiency And Animal Growth Response To Treated Corn Stover Inclusion In Lamb Finishing Diets, P.L. Reading, A. Kolthoff, J.E. Held, K. Bruns
South Dakota State University Sheep Research Report, 2014
To evaluate the effect of varying levels of treated corn stover on the dry matter intake and growth performance of growing lambs.
Effect Of Sorting And Feeding Management Practices On Finished Lamb Shrink Loss, K. Manthei, J.E. Held, A. Kolthoff, K. Bruns
Effect Of Sorting And Feeding Management Practices On Finished Lamb Shrink Loss, K. Manthei, J.E. Held, A. Kolthoff, K. Bruns
South Dakota State University Sheep Research Report, 2014
To determine the effect of common pre-marketing sorting and feeding management practices on finished lamb shrink loss.
News Of The Department Of Animal Science, Department Of Animal Science
News Of The Department Of Animal Science, Department Of Animal Science
Animal Science Newsletters
No abstract provided.
Resistant Starch Type 4-Enriched Diet Lowered Blood Cholesterols And Improved Body Composition In A Double Blind Controlled Cross-Over Intervention, Sailendra N Nichenametla, Lee A. Weidauer, Howard Wey, Tianna Beare, Bonny Specker, Moul Dey
Resistant Starch Type 4-Enriched Diet Lowered Blood Cholesterols And Improved Body Composition In A Double Blind Controlled Cross-Over Intervention, Sailendra N Nichenametla, Lee A. Weidauer, Howard Wey, Tianna Beare, Bonny Specker, Moul Dey
Health and Nutritional Sciences Faculty Publications
A metabolic health crisis is evident as cardiovascular diseases (CVD) remain the leading cause of mortality in the United States. Effects of resistant starch type 4 (RS4), a prebiotic fiber, in comprehensive management of metabolic syndrome (MetS) remain unknown. This study examined the effects of a blinded exchange of RS4-enriched flour (30% v/v) with regular/control flour (CF) diet on multiple MetS comorbidities. In a double blind (participants-investigators), placebo-controlled, cluster cross-over intervention (n = 86, age≥18, 2-12 week interventions, 2-week washout) in the United States, individuals were classified as having MetS (With-MetS) or not (No-MetS) following International Diabetes Federation (IDF)-criteria. RS4 …
An Affinity–Effect Relationship For Microbial Communities In Plant–Soil Feedback Loops, Yi Lou, Sharon A. Clay, Adam S. Davis, Anita Dille, Joel Felix, Analiza H. M. Ramirez, Christy L. Sparague, Anthony C. Yannarell
An Affinity–Effect Relationship For Microbial Communities In Plant–Soil Feedback Loops, Yi Lou, Sharon A. Clay, Adam S. Davis, Anita Dille, Joel Felix, Analiza H. M. Ramirez, Christy L. Sparague, Anthony C. Yannarell
Agronomy, Horticulture and Plant Science Faculty Publications
Feedback loops involving soil microorganisms can regulate plant populations. Here, we hypothesize that microorganisms are most likely to play a role in plant–soil feedback loops when they possess an affinity for a particular plant and the capacity to consistently affect the growth of that plant for good or ill. We characterized microbial communities using whole-community DNA fingerprinting from multiple "home-and-away" experiments involving giant ragweed (Ambrosia trifida L.) and common sunflower (Helianthus annuus L.), and we looked for affinity–effect relationships in these microbial communities. Using canonical ordination and partial least squares regression, we developed indices expressing each microorganism's affinity …
Pre-Plant Anhydrous Ammonia Placement Consequences On No-Till Versus Conventional-Till Maize Growth And Nitrogen Responses, Peter Kovacs, George E. Van Scoyoc, Thomas A. Doerge, James J. Camberato, Tony J. Vyn
Pre-Plant Anhydrous Ammonia Placement Consequences On No-Till Versus Conventional-Till Maize Growth And Nitrogen Responses, Peter Kovacs, George E. Van Scoyoc, Thomas A. Doerge, James J. Camberato, Tony J. Vyn
Agronomy, Horticulture and Plant Science Faculty Publications
With the advent of precision guidance systems, maize (Zea mays L.) farmers in various tillage systems have more options in pre-plant nutrient banding relative to the intended crop rows. Anhydrous ammonia (NH3) placement during pre-plant application is of interest because of concerns for possible ammonia toxicity to maize seedlings when high NH3 rates are applied too close to the seed row and the need to improve plant-nitrogen (N) use efficiencies. Field studies were conducted between 2010 and 2012 near West Lafayette, IN, to compare traditional angled (diagonally) vs. precision-guided parallel NH3 applications (the latter was offset 15 cm from …
Common Sunflower Seedling Emergence Across The U.S. Midwest, Sharon A. Clay, Adam Davis, Anita Dille, John Lindquist, Analiza H. M. Ramirez, Christy Sprague, Graig Reicks, Frank Forcella
Common Sunflower Seedling Emergence Across The U.S. Midwest, Sharon A. Clay, Adam Davis, Anita Dille, John Lindquist, Analiza H. M. Ramirez, Christy Sprague, Graig Reicks, Frank Forcella
Agronomy, Horticulture and Plant Science Faculty Publications
Predictions of weed emergence can be used by practitioners to schedule POST weed management operations. Common sunflower seed from Kansas was used at six Midwestern U.S. sites to examine the variability that 16 climates had on common sunflower emergence. Nonlinear mixed effects models, using a flexible sigmoidal Weibull function that included thermal time, hydrothermal time, and a modified hydrothermal time (with accumulation starting from January 1 of each year), were developed to describe the emergence data. An iterative method was used to select an optimal base temperature (Tb) and base and ceiling soil matric potentials (ψb and ψc) that resulted …
Does The Conversion Of Grasslands To Row Crop Production In Semi-Aridareas Threaten Global Food Supplies, David E. Clay, Sharon A. Clay, Kurtis D. Reitsma, Barry H. Dunn, Alexander J. Smart, Gregg G. Carlson, David Horvath, James J. Stone
Does The Conversion Of Grasslands To Row Crop Production In Semi-Aridareas Threaten Global Food Supplies, David E. Clay, Sharon A. Clay, Kurtis D. Reitsma, Barry H. Dunn, Alexander J. Smart, Gregg G. Carlson, David Horvath, James J. Stone
Agronomy, Horticulture and Plant Science Faculty Publications
In the world's semi-arid regions, high crop demands have produced short term economic incentives to convert food production on native grasslands to dryland row crop food production, while genetic enhancements and equipment have reduced the risk of crop failure. The objectives of this paper were to discuss (1) the importance of considering the long-term sustainability of changing land use in semi-arid regions; (2) the impact of extreme climatic events on ecosystem functioning; and (3) factors contributing to higher crop yields in semi-arid regions. Semi-arid regions contain fragile areas where extreme climate events may be a tipping point that converts an …
A New Perspective On Trait Differences Between Native And Invasive Exotic Plants, A. Joshua Leffler, Jeremy J. James, Thomas A. Monaco, Roger L. Sheley
A New Perspective On Trait Differences Between Native And Invasive Exotic Plants, A. Joshua Leffler, Jeremy J. James, Thomas A. Monaco, Roger L. Sheley
Natural Resource Management Faculty Publications
Functional differences between native and exotic species potentially constitute one factor responsible for plant invasion. Differences in trait values between native and exotic invasive species, however, should not be considered fixed and may depend on the context of the comparison. Furthermore, the magnitude of difference between native and exotic species necessary to trigger invasion is unknown. We propose a criterion that differences in trait values between a native and exotic invasive species must be greater than differences between co-occurring natives for this difference to be ecologically meaningful and a contributing factor to plant invasion. We used a meta-analysis to quantify …
Disease And Predation: Sorting Out Causes Of A Bighorn Sheep (Ovis Canadensis) Decline, Joshua B. Smith, Jonathan A. Jenks, Troy Grovenburg, Robert W. Klaver
Disease And Predation: Sorting Out Causes Of A Bighorn Sheep (Ovis Canadensis) Decline, Joshua B. Smith, Jonathan A. Jenks, Troy Grovenburg, Robert W. Klaver
Natural Resource Management Faculty Publications
Estimating survival and documenting causes and timing of mortality events in neonate bighorn sheep (Ovis canadensis) improves understanding of population ecology and factors influencing recruitment. During 2010–2012, we captured and radiocollared 74 neonates in the Black Hills, South Dakota, of which 95% (70) died before 52 weeks of age. Pneumonia (36%) was the leading cause of mortality followed by predation (30%). We used known fate analysis in Program MARK to estimate weekly survival rates and investigate the influence of intrinsic variables on 52-week survival. Model {S1 wk, 2–8 wks, .8 wks} had the lowest AICc (Akaike’s Information Criterion corrected for …
Benchmark Survey, Sdsu Extension
Benchmark Survey, Sdsu Extension
SDSU Extension Reports
In 2011, SDSU Extension faced significant state and federal budget cuts (FY2012), which meant the concept of a traditional Extension system would not be financially feasible. In response to these cuts, SDSU Extension implemented a new staffing model, reorganized into eight Regional Extension Centers and emphasized a web-based delivery system through www.iGrow.org. How did these changes impact SDSU Extension’s ability to support its land-grant mission to provide educational programs that strengthen agriculture and natural resources, families and communities? To find out, SDSU Extension contracted with a third-party marketing firm to interview 400 crop and livestock producers throughout South Dakota. The …
Greater Polar Moment Of Inertia At The Tibia In Athletes Who Develop Stress Fractures, Lee A. Weidauer, Teresa Binkley, Matthew Vukovich, Bonny Specker
Greater Polar Moment Of Inertia At The Tibia In Athletes Who Develop Stress Fractures, Lee A. Weidauer, Teresa Binkley, Matthew Vukovich, Bonny Specker
Health and Nutritional Sciences Faculty Publications
Background: Several previous investigations have determined potential risk factors for stress fractures in athletes and military personnel.
Purpose: To determine factors associated with the development of stress fractures in female athletes.
Study Design: Case-control study; Level of evidence, 3.
Methods: A total of 88 female athletes (cross-country, n ¼ 29; soccer, n ¼ 15; swimming, n ¼ 9; track and field, n ¼ 14; volleyball, n ¼ 12; and basketball, n ¼ 9) aged 18 to 24 years were recruited to participate in a longitudinal bone study and had their left distal tibia at the 4%, 20%, and 66% sites …