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Articles 1 - 30 of 45
Full-Text Articles in Life Sciences
Sdsu Beef Day 2020 Complete Proceedings, Department Of Animal Science
Sdsu Beef Day 2020 Complete Proceedings, Department Of Animal Science
SDSU Beef Day 2020 Summary Publication
This is the complete proceedings of the South Dakota State University, Department of Animal Science Beef Day 2020. The proceedings contain research presented on the following topics:
Cow/Calf
SDSU Extension
Feedlot
Meat and Human Nutrition
Reproduction
Evaluation Of Ruminal Net Wrap Accumulation In Cows Fed Ground Hay, A. A. Harty, K. Grott
Evaluation Of Ruminal Net Wrap Accumulation In Cows Fed Ground Hay, A. A. Harty, K. Grott
SDSU Beef Day 2020 Summary Publication
Objective: To determine how rapidly net wrap accumulation occurs in the rumen when hay is ground without net wrap removal.
Assessing Passive Transfer And Respiratory Pathogen Colonization Of Neonatal Beef Calves In A Confinement Operation, Russ Daly, Christian Rozeboom, Jonathan Sumption
Assessing Passive Transfer And Respiratory Pathogen Colonization Of Neonatal Beef Calves In A Confinement Operation, Russ Daly, Christian Rozeboom, Jonathan Sumption
SDSU Beef Day 2020 Summary Publication
1) Determine adequacy of passive transfer, and specifically Mannheimia hemolytica antibodies, in 2 subsets of neonatal calves.
2) Characterize presence and relative levels of respiratory pathogens – and changes over time – in nasal swabs in 2 cohorts of calves.
3) Use the results to determine whether changes in vaccine programs are warranted in this herd.
Heavy Winter Patch Grazing As An Alternative To Prescribed Burning On The Northern Great Plains, Jameson R. Brennan, Patricia Johnson, Ken Olson, Jennifer Lutze
Heavy Winter Patch Grazing As An Alternative To Prescribed Burning On The Northern Great Plains, Jameson R. Brennan, Patricia Johnson, Ken Olson, Jennifer Lutze
SDSU Beef Day 2020 Summary Publication
Among management systems intended to increase heterogeneity on the landscape, patch burn grazing (PBG) is by far the most prominent and researched method. Though prescribed burning is seen as a healthy disturbance in grassland ecosystems, many landowners in the Northern Great Plains have an aversion to fire. This is due to safety and liability concerns as well as concerns over forage losses and limitations of labor, equipment, and insurance to successfully carry out prescribed burns. Therefore, there is a critical need to evaluate alternative, non-fire management strategies that will encourage rangeland heterogeneity. A study was conducted in 2017-2018 at the …
Evaluation Of Variation Attributable To Lab And Technician For Measurements Of Beef Carcass Traits Made Using Ultrasound, B. Schmidt, M.D. Macneil, M. G. Gonda
Evaluation Of Variation Attributable To Lab And Technician For Measurements Of Beef Carcass Traits Made Using Ultrasound, B. Schmidt, M.D. Macneil, M. G. Gonda
SDSU Beef Day 2020 Summary Publication
National cattle genetic evaluations assume technician and imaging lab do not contribute to phenotypic variation when measuring carcass traits by ultrasound. The objective of this study was to estimate variance components of ultrasound carcass measurements, specifically variance contributed by ultrasound technician and imaging laboratory. Accounting for technician and imaging lab variation may increase accuracy of genetic predictions for carcass traits. Ultrasound carcass predictions for ribeye area (REA), percent intramuscular fat (IMF), and backfat (BF) were provided by the American Angus Association (AAA; n=281,982 animals), American Hereford Association (AHA; n=49,602), and American Simmental Association (ASA; n=59,576) for a total of 391,160 …
Mineral Nutrition For Beef Cattle – Extension Program, Adele Harty
Mineral Nutrition For Beef Cattle – Extension Program, Adele Harty
SDSU Beef Day 2020 Summary Publication
Objective: Provide educational resources and support to producers to assist them in improving their cattle mineral program and subsequent cattle health and nutrition.
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.
Bovine Emergency Response Plan (Berp) Program, Heidi Carroll
Bovine Emergency Response Plan (Berp) Program, Heidi Carroll
SDSU Beef Day 2020 Summary Publication
Annually in the United States, billions of livestock are marketed and transported for breeding, feeding, exhibition, and slaughter. On any given day, several hundred thousand head of livestock are on the road. The transport of livestock is an integral and economically significant part of all livestock industries, especially in South Dakota where animal agriculture ranks number one and animal recreational activities are prevalent. South Dakota roadways are also common truck routes for the movement of livestock within North America. Accidents involving livestock have increased over the years and pose unique challenges to first responders, law enforcement, and the public. The …
Grazing Behavior, Forage Quality, And Intake Rates Of Livestock Grazing Pastures Occupied By Prairie Dogs, Jameson R. Brennan, Ken Olson, Patricia Johnson, Janna Block, Chris Schauer
Grazing Behavior, Forage Quality, And Intake Rates Of Livestock Grazing Pastures Occupied By Prairie Dogs, Jameson R. Brennan, Ken Olson, Patricia Johnson, Janna Block, Chris Schauer
SDSU Beef Day 2020 Summary Publication
Prairie dogs can reduce the carrying capacity on rangelands by up to 50% through direct consumption of vegetation and by clipping plants to improve predator detection. Studies have shown that forage quality and digestibility are greater on prairie dog towns than off-town, however research is lacking that quantifies rates of forage and nutrition intake by cattle grazing pastures occupied by prairie dogs. The objectives of this study were to 1) evaluate relationships between on- and off-town plant communities and cattle grazing locations to identify trends in livestock grazing behavior throughout the growing season, 2) evaluate diet nutrient composition and intake …
Evaluation Of Bedding Application On Steroidal Ear Implant Abnormality Rate In Beef Steers, Elizabeth M. Buckhaus, Dathan T. Smerchek, Zachary K. Smith
Evaluation Of Bedding Application On Steroidal Ear Implant Abnormality Rate In Beef Steers, Elizabeth M. Buckhaus, Dathan T. Smerchek, Zachary K. Smith
SDSU Beef Day 2020 Summary Publication
Objective: To evaluate the effects of bedding application on steroidal implant abnormalities (i.e. abscess, hard, knot, missing, partial, and soft inflammation).
Effects Of Increasing Doses Of Trenbolone Acetate And Estradiol On Sera Metabolites Following Implantation During The Finishing Phase In Beef Steers, D. T. Smerchek, Z. K. Smith
Effects Of Increasing Doses Of Trenbolone Acetate And Estradiol On Sera Metabolites Following Implantation During The Finishing Phase In Beef Steers, D. T. Smerchek, Z. K. Smith
SDSU Beef Day 2020 Summary Publication
Objective: To determine the effects of increasing doses of trenbolone acetate and estradiol on sera metabolite responses following implantation during the finishing phase in beef steers.
Estimating The Effects Weather, Dry Matter Intake, And Body Weight On Daily Water Intake In Weaned Calves, Z. S. Mcdaniel, M. G. Gonda, C. L. Wright
Estimating The Effects Weather, Dry Matter Intake, And Body Weight On Daily Water Intake In Weaned Calves, Z. S. Mcdaniel, M. G. Gonda, C. L. Wright
SDSU Beef Day 2020 Summary Publication
Water is an essential nutrient and is required for growth, metabolism, lactation, and reproduction. However, water requirements for beef cattle have not been studied extensively since the 1950’s. The genetic potential for beef cattle has changed considerably since then. With the change in genetics, beef producers have observed increases in average daily gain and final body weight. The need for updated water requirements for beef cattle has also been exacerbated by global climate variability, drought conditions, and the need for efficient use of water resources. Given the increased productivity of cattle today relative to those of decades ago, increased water …
Effects Of Bedding Application On Growth Performance And Carcass Traits In Finishing Beef Steers During The Winter And Spring In Eastern South Dakota, D. T. Smerchek, E. M. Buckhaus, K. D. Miller, Z. K. Smith
Effects Of Bedding Application On Growth Performance And Carcass Traits In Finishing Beef Steers During The Winter And Spring In Eastern South Dakota, D. T. Smerchek, E. M. Buckhaus, K. D. Miller, Z. K. Smith
SDSU Beef Day 2020 Summary Publication
Objective: Evaluate the effects of bedding application on growth performance and carcass traits of finishing beef steers fed during the winter and spring in eastern South Dakota.
Sdsu Beef 2020 Increases Beef Industry Knowledge For Participants, C. Bakker, K. Underwood, J. K. Grubbs, J. Walker, C. Wright, K. Olson, W. Rusche, A. Blair
Sdsu Beef 2020 Increases Beef Industry Knowledge For Participants, C. Bakker, K. Underwood, J. K. Grubbs, J. Walker, C. Wright, K. Olson, W. Rusche, A. Blair
SDSU Beef Day 2020 Summary Publication
The objective of this study was to evaluate the effectiveness of the SDSU Beef 2020 program on increasing participant knowledge and impacting production practices. Unlike the pork or poultry industries, the US beef industry is not vertically integrated, and as a result the beef supply is managed by producers in a variety of roles. While these producers are knowledgeable about their specific sector, some may not be as familiar with the other aspects of beef production. South Dakota State University hosts an Extension program entitled Beef 2020 with the goal of bridging this knowledge gap.
Effects Of Wheat Straw Bedding Usage On Hide Tag Scores During Winter And Spring In Finishing Feedlot Cattle Fed In Eastern South Dakota, K. D. Miller, D. T. Smerchek, Z. K. Smith
Effects Of Wheat Straw Bedding Usage On Hide Tag Scores During Winter And Spring In Finishing Feedlot Cattle Fed In Eastern South Dakota, K. D. Miller, D. T. Smerchek, Z. K. Smith
SDSU Beef Day 2020 Summary Publication
Objective: Evaluate hide tag scores of finishing cattle subjected to differing levels of bedding application during the winter and spring months in eastern South Dakota.
Effects Of Increasing Doses Of Trenbolone Acetate And Estradiol On Finishing Phase Growth Performance And Carcass Trait Responses In Beef Steers, D. T. Smerchek, E. M. Buckhaus, K. D. Miller, Z. K. Smith
Effects Of Increasing Doses Of Trenbolone Acetate And Estradiol On Finishing Phase Growth Performance And Carcass Trait Responses In Beef Steers, D. T. Smerchek, E. M. Buckhaus, K. D. Miller, Z. K. Smith
SDSU Beef Day 2020 Summary Publication
Objective: Evaluate the effects of increasing doses of trenbolone acetate and estradiol as terminal implants on finishing phase growth performance and carcass trait responses in beef steers.
Daily Beef Consumption As A Part Of The Dash Diet Influences Blood Biomarkers Of Cardiometabolic And Muscle Health In Older Adults, M. Hossain, C. Perry
Daily Beef Consumption As A Part Of The Dash Diet Influences Blood Biomarkers Of Cardiometabolic And Muscle Health In Older Adults, M. Hossain, C. Perry
SDSU Beef Day 2020 Summary Publication
Objective: To determine the effect of the DASH diet containing beef on insulin sensitivity, cholesterol and muscle in adults 65 and older.
Influence Of Maternal Protein Restriction In Primiparous Heifers During Mid- And/Or Late Gestation On Progeny Feedlot Performance And Carcass Characteristics, J. J. Block, A. D. Blair, R. N. Funston, M. J. Webb, K. R. Underwood, M. G. Gonda, A. A. Harty, R. R. Salverson, K. C. Olson
Influence Of Maternal Protein Restriction In Primiparous Heifers During Mid- And/Or Late Gestation On Progeny Feedlot Performance And Carcass Characteristics, J. J. Block, A. D. Blair, R. N. Funston, M. J. Webb, K. R. Underwood, M. G. Gonda, A. A. Harty, R. R. Salverson, K. C. Olson
SDSU Beef Day 2020 Summary Publication
Maternal nutrient restriction in beef cows impacts developmental processes in the fetus that may influence lifetime performance. This study investigated impacts of metabolizable protein (MP) restriction in primiparous heifers during mid- and/or late-gestation on progeny feedlot performance and carcass characteristics.
Influence Of Beef Production System On Calpain-1 Autolysis And Troponin-T Degradation, L. G. Johnson, J. K. Grubbs, K. R. Underwood, M. J. Webb, A. D. Blair
Influence Of Beef Production System On Calpain-1 Autolysis And Troponin-T Degradation, L. G. Johnson, J. K. Grubbs, K. R. Underwood, M. J. Webb, A. D. Blair
SDSU Beef Day 2020 Summary Publication
The objective of this study was to determine the impact beef production systems utilizing different levels of growth promotant technology on calpain-1 autolysis and troponin-T degradation, which are measures of tenderness.
Identifying Consumer Preference For Beef Raised With Different Production Systems, M. J. Webb, D. P. Pendell, A. A. Harty, R. R. Salverson, K. R. Underwood, K. C. Olson, A. D. Blair
Identifying Consumer Preference For Beef Raised With Different Production Systems, M. J. Webb, D. P. Pendell, A. A. Harty, R. R. Salverson, K. R. Underwood, K. C. Olson, A. D. Blair
SDSU Beef Day 2020 Summary Publication
Objectives of this study were to evaluate meat quality characteristics and identify consumer palatability preferences for beef raised in different production systems.
Influence Of Post-Harvest Circulatory Rinse On Tenderness And Objective Color Of Cow Striploin Steaks, L. M. Hite, J. K. Grubbs, A. D. Blair, K. R. Underwood
Influence Of Post-Harvest Circulatory Rinse On Tenderness And Objective Color Of Cow Striploin Steaks, L. M. Hite, J. K. Grubbs, A. D. Blair, K. R. Underwood
SDSU Beef Day 2020 Summary Publication
The objective of this study was to compare the effect of a post-harvest rinse of an isotonic solution through the circulatory system on tenderness of steaks from cows.
Investigation On The Use Of A Flir (Forward Looking Infrared) Camera To Detect Relationships Between Internal And Surface Temperatures Of Beef Carcasses During Chilling, L. M. Hite, A. D. Blair, K. R. Underwood, J. K. Grubbs
Investigation On The Use Of A Flir (Forward Looking Infrared) Camera To Detect Relationships Between Internal And Surface Temperatures Of Beef Carcasses During Chilling, L. M. Hite, A. D. Blair, K. R. Underwood, J. K. Grubbs
SDSU Beef Day 2020 Summary Publication
The objective of this study was to collect preliminary data on the efficacy of using thermal imaging technology as a means to assess beef carcass chilling.
Internal Temperature Decline Rate In Beef Primals Is Reduced In Heavier Carcasses, S. R. Egolf, L. M. Hite, A. C. Egolf, C. E. Bakker, A. D. Blair, J. K. Grubbs, K. R. Underwood
Internal Temperature Decline Rate In Beef Primals Is Reduced In Heavier Carcasses, S. R. Egolf, L. M. Hite, A. C. Egolf, C. E. Bakker, A. D. Blair, J. K. Grubbs, K. R. Underwood
SDSU Beef Day 2020 Summary Publication
The objective of this study was to determine the influence of increasing beef hot carcass weights on internal temperature decline during chilling.
Effect Of Estrous Synchronization With Natural Service Or Fixed-Timed Artificial Insemination With Conventional Or Gender-Skewed Semen In Beef Females, J. A. Walker, J. J. J. Rich, G. A. Perry
Effect Of Estrous Synchronization With Natural Service Or Fixed-Timed Artificial Insemination With Conventional Or Gender-Skewed Semen In Beef Females, J. A. Walker, J. J. J. Rich, G. A. Perry
SDSU Beef Day 2020 Summary Publication
The objective of this study was to evaluate estrous synchronization and/or artificial insemination (AI) with conventional (CON) or gender-skewed (SEXED) semen on calving distribution.
Low Voltage Electrical Stimulation Of Beef Carcasses Slows Carcass Chilling Rate And Improves Steak Color, C. E. Bakker, K. R. Underwood, J. K. Grubbs, A. D. Blair
Low Voltage Electrical Stimulation Of Beef Carcasses Slows Carcass Chilling Rate And Improves Steak Color, C. E. Bakker, K. R. Underwood, J. K. Grubbs, A. D. Blair
SDSU Beef Day 2020 Summary Publication
The objective of this study was to evaluate the influence of two levels of low voltage electrical stimulation (ES) on temperature decline, pH, and meat quality.
Influence Of Micrornas From Semen On Bovine Fertility, Stephanie D. Perkins, Britany N. Keel, Emmalee J. Northrop, Tara G. Mcdaneld, Robert A. Cushman, Bo R. Harstine, J. Mel Dejarnette, Matt D. Utt, George A. Perry
Influence Of Micrornas From Semen On Bovine Fertility, Stephanie D. Perkins, Britany N. Keel, Emmalee J. Northrop, Tara G. Mcdaneld, Robert A. Cushman, Bo R. Harstine, J. Mel Dejarnette, Matt D. Utt, George A. Perry
SDSU Beef Day 2020 Summary Publication
The objective of this study was to compare the miRNAs within sperm cells of bulls considered to have high and low fertility.
Use Of Sperm Proteins As A Putative Fertility Marker, Saulo Menegatti Zoca, Kailtlin M. Epperson, Jerica J. J. Rich, Taylor N. Andrews, Adalaide C. Kline, George A. Perry
Use Of Sperm Proteins As A Putative Fertility Marker, Saulo Menegatti Zoca, Kailtlin M. Epperson, Jerica J. J. Rich, Taylor N. Andrews, Adalaide C. Kline, George A. Perry
SDSU Beef Day 2020 Summary Publication
The objectives of this study were to characterize the variation and evaluate whether CD9 and SERPINA5 could be used as fertility markers in bovine sperm.
Differences In Relative Abundance Of Gnrh-I And Gnrh-Ii In Granulosa Cells Of Bovine Antral Follicles At Specific Stages Of Follicular Development, Jerica J. J. Rich, Emmalee J. Northrop, Kaitlin M. Epperson, Saulo Menegatti Zoca, Stephanie D. Perkins, Russell F. Daly, Robert A. Cushman, George A. Perry
Differences In Relative Abundance Of Gnrh-I And Gnrh-Ii In Granulosa Cells Of Bovine Antral Follicles At Specific Stages Of Follicular Development, Jerica J. J. Rich, Emmalee J. Northrop, Kaitlin M. Epperson, Saulo Menegatti Zoca, Stephanie D. Perkins, Russell F. Daly, Robert A. Cushman, George A. Perry
SDSU Beef Day 2020 Summary Publication
Increased estradiol is the primary signal to initiate standing estrus, and cows that exhibit estrus prior to fixed-time artificial insemination have greater pregnancy rates than cows that do not. Therefore, understanding what factors may be present at the ovary that may regulate estradiol production is critical. A previous study reported that bovine follicles with greater follicular fluid concentrations of estradiol had decreased expression of GnRH-I and GnRH-II in granulosa cells (GC). The objective of this study was to characterize relative abundance of GnRH-I and -II mRNA within GC of follicles at specific stages of development. Beef cows were synchronized, and …
Influence Of Winter Cow Feeding Strategies On Cow Response, E. Gubbels, K. Olson, J. Block, Z. Smith, R. Salverson, A. Harty, W. Rusche, J. Grubbs, K. Underwood, C. Wright, C. Schauer, D. Stecher, D. Drolc, A. Blair
Influence Of Winter Cow Feeding Strategies On Cow Response, E. Gubbels, K. Olson, J. Block, Z. Smith, R. Salverson, A. Harty, W. Rusche, J. Grubbs, K. Underwood, C. Wright, C. Schauer, D. Stecher, D. Drolc, A. Blair
SDSU Beef Day 2020 Summary Publication
The objective of this study was to investigate the effects of the primary maternal prepartum dietary energy source (forage vs. concentrate) during mid- and late-gestation on dam body weight (BW), body condition score (BCS), pregnancy rate, and economic responses.
Classifying Livestock Grazing Behavior With The Use Of A Low Cost Gps And Accelerometer, Jameson Brennan, Ken Olson, Patricia Johnson, Janna Block, Chris Schauer
Classifying Livestock Grazing Behavior With The Use Of A Low Cost Gps And Accelerometer, Jameson Brennan, Ken Olson, Patricia Johnson, Janna Block, Chris Schauer
SDSU Beef Day 2020 Summary Publication
The ability to remotely track livestock through the use of GPS technology has tremendous potential to study livestock use patterns on the landscape. The use of high frequency accelerometers may give researchers and managers the ability to accurately partition GPS points into differing behaviors, giving further insight into livestock grazing selection, pasture use, and changes in forage preference through time. The objectives of this study were to 1) develop a classification algorithm to discriminate between graze and non-graze behaviors using a combination of metrics derived from a high frequency accelerometer motion sensor and a GPS data logger and 2) assess …