Life Sciences Commons^™

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

Animal Science Newsletters

No abstract provided.

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

Animal Science Newsletters

No abstract provided.

Consequences Of Hatch Phenology On Stages Of Fish Recruitment, David M. Bogner, Mark A. Kaemingk, Melissa R. Wuellner

Natural Resource Management Faculty Publications

Little is known about how hatch phenology (e.g., the start, peak, and duration of hatching) could influence subsequent recruitment of freshwater fishes into a population. We used two commonly sympatric fish species that exhibit different hatching phenologies to examine recruitment across multiple life stages. Nine yellow perch (Perca flavescens) and bluegill (Lepomis macrochirus) annual cohorts were sampled from 2004 through 2013 across larval, age-0, age-1, and age-2 life stages in a Nebraska (U.S.A.) Sandhill lake. Yellow perch hatched earlier in the season and displayed a more truncated hatch duration compared to bluegill. The timing of hatch influenced recruitment dynamics for …

Sdsu Calf Value Discovery 2013/2014 Summary Report, J.A. Walker, W.C. Rusche

Animal Science Faculty Publications

No abstract provided.

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

Animal Science Faculty Publications

No abstract provided.

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

Animal Science Faculty Publications

No abstract provided.

Influence Of Propionate Salt Levels On Young Cow Reproductive Performance, J.A. Walker, G.A. Perry, K.C. Olson

Animal Science Faculty Publications

No abstract provided.

Sdsu Calf Value Discovery 2011 Summary Report, J.A. Walker, B.P. Holland, C.L. Wright, W.C. Rusche

Animal Science Faculty Publications

No abstract provided.

Comparison Of Three Cidr Based Fixed-Time Ai Protocols For Beef Heifers, G.A. Perry, J.K. Grant, J.A. Walker, G.A. Bridges, S.G. Kruse, S. Bird, K. Heaton, R. Arias, S.L. Lake

Animal Science Faculty Publications

No abstract provided.

Scientific Literacy Of Equine Students Regarding The Use Of Antibiotics And Vaccines, Sara L. Mastellar, R.C. Bott

Animal Science Faculty Publications

There exists much misinformation about antibiotic and vaccine use. An understanding of these topics is important for the use of these tools for the best equine health outcomes. The purpose of this study was to evaluate students’ understanding of antibiotics and vaccines, identify learned misinformation, and establish baseline data. A survey was administered at the beginning of Equine Health & Disease (AS 213) and Horse Production (AS 365) at South Dakota State University during the spring 2016 semester. AS 213 is not a prerequisite for AS 365. Results of the survey suggest that students may come with some understanding of …

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

Animal Science Newsletters

No abstract provided.

Assessing Temporal Genetic Variation In A Cougar Population: Influence Of Harvest And Neighboring Populations, Rebeca L. Juarez, Michael K. Schwartz, Kristine L. Pilgrim, Daniel J. Thompson, Stephanie A. Tucker, Joshua B. Smith, Jonathan A. Jenks

Natural Resource Management Faculty Publications

The geography of the Black Hills region of South Dakota and Wyoming may limit connectivity for many species. For species with large energetic demands and large home ranges or species at low densities this can create viability concerns. Carnivores in this region, such as cougars (Puma concolor), have the additive effect of natural and human-induced mortality; this may act to decrease long-term viability. In this study we set out to explore genetic diversity among cougar populations in the Black Hills and surrounding areas. Specifically, our objectives were to first compare genetic variation and effective number of breeders of …

Effect Of Grazing Prairie Dog—Colonized Rangeland On Cattle Nutrition And Performance: A Progress Report, Kenneth C. Olson, Christopher Schauer, Chanda Engel, Janna J. Kincheloe, Jameson R. Brennan, Ben L. Hauptman

Natural Resource Management Faculty Publications

On the Ground

• One objective of the ongoing Renewal on Standing Rock Reservation project is to evaluate the response of grazing steers to the level of prairie dog colonization on Northern Mixed Grass Prairie.
• We fenced four pastures to create an increasing gradient of a proportion of the pasture area colonized by prairie dogs. Pastures are stocked with yearling steers during each growing season.
• Comparing steer performance, Global Positioning System (GPS) locations of grazing, diet samples, and ingestive behavior at each proportion of the prairie dog colony per pasture allows prediction of the optimal proportion of colonization, which enables selection …

Dairy Digest 2016, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.

The Jackrabbit Dairy Review, Vikram V. Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.

Winter Habitat Quality But Not Long- Distance Dispersal Influences Apparent Reproductive Success In A Migratory Bird, Clark S. Rushing, Peter P. Marra, Michele R. Dudash

Natural Resource Management Faculty Publications

Long- distance breeding and natal dispersal play central roles in many ecological and evolutionary processes, including gene flow, population dynamics, range expansion, and individual responses to fluctuating biotic and abiotic conditions. However, the relative contribution of long- distance dispersal to these processes depends on the ability of dispersing individuals to successfully reproduce in their new environment. Unfortunately, due to the difficulties associated with tracking dispersal in the field, relatively little is known about its reproductive consequences. Furthermore, because reproductive success is influenced by a variety of processes, disentangling the influence of each of these processes is critical to understanding the …

A Simple Method To Reduce Interpretation Error Of Ages Estimated From Otoliths, Bradley J. Smith, Daniel J. Dembkowski, Daniel A. James, Melissa R. Wuellner

Natural Resource Management Faculty Publications

We designed and tested a novel otolith viewing apparatus termed the otolith illumination device (OID) to ascertain if its use would result in a reduction of interpretation error as determined by increased precision of age estimates obtained from otoliths of walleye Sander vitreus and smallmouth bass Micropterus dolomieu. Clarity of annuli on otolith sections viewed with the OID was generally greater than clarity of annuli on sections viewed with an alternative method. OID-based age estimates were equally as, and in some instance more precise than ages estimated using the alternative method. Additionally, no systematic differences in coefficients of variation …