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News Of The Department Of Animal Science, Department Of Animal Science

Animal Science Newsletters

No abstract provided.

Growing South Dakota (Fall 2013), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 2 Crop Watchers: Plant Science Department Research Efforts Strive To Enhance Farming Practices
[Page] 5 Profiles In Leadership: David Wright; Collegiate Leadership Matters
[Page] 6 Fall Collegiate News
[Page] 8 Opportunities To Explore: College’s Summer Camps Help Spark Career Interests
[Page] 10 Collaborative Campaign: Sales Of Cull Cows Helping Fund New SDSU Cow-Calf Facility
[Page] 12 Notable
[Page] 13 A Message From The SDSU Foundation

Beefsd: An Integrated And Intensive Extension Curriculum For Beginning Beef Cattle Producers In South Dakota, K. Olson, Julie Walker, S. Hadrick

Animal Science Faculty Publications

The average age of beef producers in the USis 58 and increasing. A need exists to increase theopportunity and success for the next generation of beefcattle producers. Extension at SDSU and South DakotaFarm Bureau Federation partnered to address this byproviding a 3-year educational program that assistedbeginning beef cow-calf ranchers in South Dakota tobecome economically, ecologically, and sociallysustainable producers. The goal was to present a curriculumthat contributed to future agricultural production, landstewardship, and rural community viability. The learningobjectives were to provide: (1) evaluation of alternativeproduction systems, (2) an integrated understanding of theentire US beef cattle industry, and (3) development ofindividual cattle …

Growing South Dakota (Summer 2013), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 2 Fish, Field & Forest: Natural Resource Management Research Covers the Gamut
[Page] 5 Profiles In Leadership: David Willis; Combined Department Creates Interdisciplinary Opportunities
[Page] 6 Research On the Range: Cottonwood Field Station Has Provided Research Data for 106 Years
[Page] 8 Prairie Oasis: Natural Diversity Showcased at Oak Lake Field Station
[Page] 9 Special Section: Investigating in Agriculture & Biological Sciences at SDSU: An Update On the College of Ag’s Enhanced Facilities and Continuing Efforts Important to Helping Address Future Agricultural Challenges and Opportunities.[Page] 13 South Dakota 4-H Update: Skill-a-thons, New Exhibit Hall Planned
[Page] 14 After The …

A Survey Of Aquatic Invertebrate Communities In Nebraska Sandhill Lakes Reveals Potential Alternative Ecosystem States, J.C. Jolley, E.S. Albin, M.A. Kaemingk, D.W. Willis

Natural Resource Management Faculty Publications

Aquatic invertebrate communities are important to shallow lake ecosystem form and function, providing vital components to the food web and thereby important to achieving lake management goals. We characterized lake invertebrate communities and physicochemical variables in six Nebraska Sandhill lakes and examined these characteristics within an alternative stable state framework. Surveys were conducted during 2005 within each of these lakes by sampling aquatic macroinvertebrate abundance, zooplankton abundance and biomass, phytoplankton biomass, and physicochemical variables. When placed within an alternative stable state framework, the response variables exhibited a gradient of different ecosystem states. Two lakes appeared congruent with the clear water …

News Of The Department Of Animal Science, Department Of Animal Science

Animal Science Newsletters

No abstract provided.

Growing South Dakota (Spring 2013), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 2 Food Focus: SDSU Leading National Effort To Promote Healthy Food Choices
[Page] 3 In Stores Now: “Pick It, Try It, Like It” Fruit & Vegetable Campaign
[Page] 4 Coaching Food Entrepreneurs: SDSU Extension Outreach Includes Entrepreneur Workshops
[Page] 5 From South Dakota to South America: College of Agriculture & Biological Science Students Experience Argentine Agriculture
[Page] 6 Spring College News
[Page] 8 Showcasing Ag’s Evolution: SDSU’s Ag Museum Is More Than Just Tractors [Page] 10 Mastering Marketing: Students Host Bull Sale Through Unique Class [Page] 11 Following Pheasants: SDSU Researchers Analyze Nesting Needs
[Page] 12 Faculty Highlights
[Page] …

Effects Of Plant Phenology And Vertical Height On Accuracy Of Radio-Telemetry Locations, Troy Grovenburg, Christopher N. Jacques, Robert W. Klaver, Christopher S. Deperno, Chad P. Lehman, Todd J. Brinkman, Kevin A. Robling, Susan P. Rupp, Jonathan A. Jenks

Natural Resource Management Faculty Publications

The use of very high frequency (VHF) radio-telemetry remains wide-spread in studies of wildlife ecology andmanagement. However, few studies have evaluated the influence of vegetative obstruction on accuracy in differing habitats with varying transmitter types and heights. Using adult and fawn collars at varying heights above the ground (0, 33, 66 and 100 cm) to simulate activities (bedded, feeding and standing) and ages (neonate, juvenile and adult) of deer Odocoileus spp., we collected 5,767 bearings and estimated 1,424 locations (28-30 for each of 48 subsamples) in three habitat types (pasture, grassland and forest), during two stages of vegetative growth (spring …

News Of The Department Of Animal Science, Department Of Animal Science

Animal Science Newsletters

No abstract provided.

Continuous, Pulsed And Disrupted Nutrient Subsidy Effects On Ecosystem Productivity, Stability, And Energy Flow, Michael J. Weber, Michael L. Brown

Natural Resource Management Faculty Publications

Resource pulses and subsidies can supply ecosystems with an important source of nutrients that supports additional productivity at multiple trophic levels. Common carp Cyprinus carpio provide ecosystems with a continuous nutrient subsidy through bioturbation and excretion but may also initiate a nutrient pulse through carcass decomposition. We examined how continuous (common carp foraging and excretion), pulsed (carcass decomposition) and disrupted (carp introduced and then removed) nutrient subsidies differed in their ability to alter nutrient availability, ecosystem productivity and stability and energy flow. Nitrogen and phosphorus availability and primary production were highest in pulsed, intermediate in continuous and lowest for disrupted …

Sdsu Cow/Calf Teaching And Research Unit, Cody Wright, Kevin Vander Wal, George Perry

South Dakota Beef Report, 2013

The SDSU Cow/Calf Unit (CCU) is a multi‐purpose facility that provides resources for Animal Science courses and research projects. Cattle produced at the facility are also utilized by Little International, Block and Bridle, and livestock judging teams. The facility is managed by Kevin Vander Wal and generally employs 4 to 5 undergraduate students.

Sdsu Calf Value Discovery 2012/2013 Summary Report, J.A. Walker, W.C. Rusche

South Dakota Beef Report, 2013

The Calf Value Discovery Program (CVD) allows cow‐calf producers to gain knowledge of the finishing segment of the beef cattle industry and the marketing of fed cattle. Specifically, CVD provides an opportunity for cow‐calf producers to learn how their calves perform in a feedlot and their carcass value when sold in a value‐based marketing system. Each producer taking part in the program could consign 5 or more steers weighing between 500 and 800 pounds to the CVD program. Animals were finished at VanderWal Yards (Bruce, SD) in a calf‐fed program using typical diets and management protocols. Carcass and feedlot performance …

Walking Distance And Performance Of Drylot Developed Beef Heifers Following Being Moved To A Grazing Situation, G.A. Perry, E.L. Larimore, J.A. Walker

South Dakota Beef Report, 2013

Research has shown that heifers moved from a drylot to grass after AI have decreased weight gains and pregnancy success compared to heifers developed on range. This effect could potentially be due to inexperience in a specific grazing environment, which could result in greater time spent exploring a new environment. In this study beef heifers were moved from a drylot to spring grass at two different times and their activity compared. Heifers in a drylot walked less than heifers grazing spring forage. However, following being moved to spring forage heifers that had been adjusted to grass for about a month …

The Effect Of Handler Personality Type On Feedlot Cattle Behavioral Responses, H. Franzky, R. Pritchard, J. Trenhaile

South Dakota Beef Report, 2013

The ability to readily identify individuals that may have a greater innate ability to handle cattle in a low stress manner would be useful in feedlots and on ranches. This study was conducted to determine whether handler personality type would be a useful tool to predict stockman abilities. To accomplish this, 3 cattle handling exercises were created to observe human‐cattle interactions. A scoring system was developed to investigate cattle handling proficiency based on cattle behavioral responses. Handler personality type was classified using two assessments. Some cattle handling exercises did not differentiate handler personality types. Introverted handlers tended to have higher …

Comparison Of Two Different Methods To Harvest Drought‐Damaged Corn, W.C. Rusche, J.A. Walker

South Dakota Beef Report, 2013

Two methods of harvesting drought‐stressed corn as large round bales were compared in this study. Three acres of drought‐stressed corn were cut and either baled as high‐moisture bales and wrapped in plastic (BALEAGE), or allowed to completely dry and baled with a conventional large round baler (DRY). Core samples were analyzed for moisture, CP, ADF, NDF and in vitro NDF and DM digestibility. Samples from the BALEAGE treatment were lower in CP than those from the DRY treatment. Concentrations of ADF and NDF did not differ between BALEAGE and DRY. Dry matter and NDF digestibility were also similar between the …

Dairy Digest 2013, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.

Evaluating The Use Of Autonomous Recording Units To Monitor Yellow Rails, Nelson's Sparrows, And Le Conte's Sparrows, Anna Marie Sidie-Slettedahl

Electronic Theses and Dissertations

Population status and habitat use of yellow rails (Coturnicops noveboracensis) (YERA), Nelson’s sparrows (Ammodramus nelsoni) (NESP), and Le Conte’s sparrows (Ammodramus leconteii) (LCSP) are poorly known, so systematic surveys of these elusive species are needed to inform conservation planning and guide management. A standardized protocol for monitoring secretive marsh birds exists (Conway 2009, 2011); however, these species call at night and may be missed during early-morning marsh bird surveys. I tested the effectiveness of autonomous recording units (ARUs) to survey these species by analyzing recorded vocalizations using bioacoustics software. I deployed 22 ARUs at 54 sites in northern Minnesota and …

Managing Annual Cow Costs, Julie Walker

Animal Science Faculty Publications

Published in Proceedings of the 23rd Range Beef Cow Symposium- Rapid City, SD.

Effects Of Climate Change On Phenology Of Blackbirds And Orioles (Icterids) In Eastern South Dakota, Kelsey Bedford, Nicole Burkard, Brandi Crider, Emma Barnett, N. H. Troelstrup Jr.

Oak Lake Field Station Research Publications

Birds are among the first responders to climate change, often having clearly observable phenological responses to less perceptible levels of climate shift. Declines in populations of a number of bird species have been witnessed both in the United States and abroad, with up to a 48% decline in grassland birds of the Central U.S. Understanding changes in bird abundance and distribution is essential because birds supply a wide variety of critical ecosystem services, including pollination and pest control. While the effects of climate change on many bird species’ phenology have been studied intensely, research on the family Icteridae is limited. …

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.

Overwinter Mortality Of Sympatric Juvenile Bluegill And Yellow Perch In Mid-Temperate Sandhill Lakes, Nebraska, U.S.A, Jeffrey C. Jolley, Mark A. Kaemingk, David W. Willis, Richard S. Holland

Natural Resource Management Faculty Publications

Substantial mortality can occur in age-0 fish populations during their first year of life, especially in winter; this can potentially influence overall recruitment into the adult population. As such, we compared relative abundances between fall and spring catches of sympatric juvenile bluegill Lepomis macrochirus Rafinesque and yellow perch Perca flavescens (Mitchill) to evaluate the magnitude of overwinter mortality across locations (five lakes for two years) and through time (one lake for six years). In addition, we compared both quantile-quantile and increment plots, based on length-frequency histograms from fall- and spring-caught cohorts from 2004 to 2010, to determine if mortality was …

Nitrogen Excretion From Beef Cattle For 6 Cover Crop Mixes As Estimated By A Nutritional Model, E.E. Grings, A. Sackey, M. Hansen, V. Owens, D. Beck, P. Sexton

South Dakota Beef Report, 2013

Excretion of nitrogen (N) from cattle within crop‐livestock systems is an important component of nutrient cycling, but measuring fecal and urinary N excretion in grazing cattle is a difficult and time consuming task. Nutritional models are available to estimate feed utilization and have been used to predict N excretion in grazing cattle. Using the Large Ruminant Nutrition Model, we predicted N losses from mature pregnant beef cows and growing beef heifers from compositional analysis of cover crop mixes grown in central South Dakota. All of the mixes used contained crude protein (CP) concentrations greater than cattle requirements. Estimates of both …

The Influence Of Maternal Energy Status During Mid‐Gestationon Beef Offspring Carcass Characteristics And Meat Quality, D. A Mohrhauser, A.R. Taylor, K.R. Underwood, R.H. Pritchard, A.E. Wertz-Lutz, A.D. Weaver

South Dakota Beef Report, 2013

Research has suggested that maternal under‐nutrition may cause the development of a thrifty phenotype in the offspring, potentially resulting in greater adiposity and reduced muscle mass. These alterations in fat and muscle development could have lasting impacts on offspring growth, carcass characteristics, and meat quality. Thus, the objective of this study was to determine the influence of maternal energy status during mid‐gestation on offspring carcass characteristics and meat quality. To alter maternal energy status, cows either grazed pasture or were fed in a dry‐lot at 80% of the energy requirements for body weight maintenance during a mean period of 109 …

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.

Growing South Dakota (Winter 2013), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

This issue includes the 2012 South Dakota Agricultural Station Annual Report

CONTENTS:
[Page] 1 From The Dean
[Page] 2 Commitment To Collaboration: Working Together Adds Efficiency To Budgets: Effectiveness To Solutions
[Page] 7 Special Pull-Out Section: South Dakota Agricultural Experiment Station Annual Report: Highlighting Research Projects On Beef; Wheat; And Soybean Meal For Aquaculture
[Page] 11 Water Watchers: The South Dakota Water Resources Institute Provides Research, Education & Outreach
[Page] 12 Winter College News
[Page] 14 SDSU Extension: One Year Later: Reorganization Prompted Restructuring – And Renewed Commitment
[Page] 16 Bullseye!: South Dakota’s 4-H Shooting Sports Program Sees Continued Growth …

Ecology Of Glacial Relict Fishes In South Dakota's Sandhills Region, Eli Felts

Electronic Theses and Dissertations

Native stream fish zoogeography has changed substantially across North America during the last century as habitat degradation, stream fragmentation and introductions of nonnative species have led to numerous extinctions, extirpations and altered distributions. Insufficient information regarding imperiled species often results in reactive, rather than proactive, management, and knowledge of species status and ecology is critical in identifying conservation priorities. South Dakota populations of three dace species (northern redbelly dace Chrosomus eos, finescale dace Chrosomus neogaeus, and pearl dace Margariscus margarita) are relict of Pleistocene Glaciation and are isolated from the northern core of their distribution, but little information exists regarding …

El Daño Térmico En El Ensilaje De Alfalfa, A. D. Garcia

Dairy Science Publication Database

No abstract provided.

The Influence Of Growth Stage On Carcass Compositionand Factors Associated With Marbling Development In Beef Cattle, S.A. Kern, R.H. Pritchard, S.M. Scramlin, B.P. Holland, A.D. Blair, K.R. Underwood

South Dakota Beef Report, 2013

There are many cellular regulatory factors that ultimately determine the intramuscular fat, or marbling content and quality of beef carcasses. Identifying factors which play a critical role in the development of intramuscular fat throughout the feeding period and determining how cattle feeders can manipulate these factors will be crucial to continue improving beef quality. Ideally, marbling must increase without excess accumulation of adipose in depots that are undesirable and economically detrimental (subcutaneous and visceral). The results of this study are novel as they show not only what cellular factors play a role in marbling development, but also how their expression …