Animal Sciences Commons^™

The Maternal Effect: Carrying The Consequences Of Nutrition Across Generations, Kevin Monteith, Joshua Delger, Lowell Schmitz, Kyle Monteith, Jonathan A. Jenks

Natural Resource Management Faculty Publications

Let’s indulge ourselves in a deer-management fantasy for a moment. I’m sure it won’t be your first time! Imagine you are blessed to own and manage your own block of deer country for several years (for many fortunate readers, this is reality, not fantasy). Although the ground you purchase holds plenty of deer, the overgrown forests and grassy meadows might not be providing the nutrition necessary for these deer to achieve their genetic potential. In addition, the 6-foot high browse line resulting from extreme overabundance of deer is a likely indication of why only scrawny looking bucks are typically harvested …

Botteri's Sparrow (Peucaea Botterii) Occurs In Northern Coahuila, Mexico, Paul Van Els, Ricardo Canales-Del-Castillo, John Klicka

Ornithology Program (HRC)

Botteri’s Sparrow (Peucaea botterii) occurs widely in the shrub-grasslands of southern North America. We report a breeding population of the species in the Sierra de la Encantada of northern Coahuila, Mexico, ~80 km from the Big Bend area of Texas and >300 km from the nearest previously known breeding range in southern Coahuila and central Chihuahua. We captured three individuals, which show a mostly gray dorsal coloration, suggestive of the texana subspecies, occurring from southern Texas to northern Veracruz. The exact affinity of the northern Coahuila population still needs to be ascertained. The presence of Botteri’s Sparrow in northern Coahuila …

Rna Interference In Marine And Freshwater Sponges: Actin Knockdown In Tethya Wilhelma And Ephydatia Muelleri By Ingested Dsrna Expressing Bacteria, Ajna S. Rivera, April L. Hill, Et. Al.

Biology Faculty Publications

Background: The marine sponge Tethya wilhelma and the freshwater sponge Ephydatia muelleri are emerging model organisms to study evolution, gene regulation, development, and physiology in non-bilaterian animal systems. Thus far, functional methods (i.e., loss or gain of function) for these organisms have not been available.

Results: We show that soaking developing freshwater sponges in double-stranded RNA and/or feeding marine and freshwater sponges bacteria expressing double-stranded RNA can lead to RNA interference and reduction of targeted transcript levels. These methods, first utilized in C. elegans, have been adapted for the development and feeding style of easily cultured marine and freshwater poriferans. …

Effect Of Floor Density On Growth Performance Of Pearl Grey Guinea Fowl Replacement Pullets, Samuel N. Nahashon, Nathaniel Adefope, D. Wright

Agricultural and Environmental Sciences Faculty Research

Little is known of the optimal floor density for the Pearl Grey (PG) guinea fowl pullet. Hence, the objective of this study was to determine the effect of varying floor density on the growth performance of PG guinea fowl pullets. In 3 replicates, 1-d-old guinea keets (n = 786) were weighed individually and randomly assigned to floor pens covered with pine wood shavings at 80, 69, 60, and 53 birds/pen, equivalent to densities of 18, 15.6, 13.6, and 12 birds/m2, respectively. The birds were allowed feeder space of 2.3, 2.7, 3.1, and 3.5 cm/bird, respectively, and water space of 1.2, …

Nebraska Bird Review (June 2011) 79(2), Whole Issue

Nebraska Bird Review

Spring Field Report, March 2011 to May 2011 ... 46

High Species Count at Annual Sarpy County Spring Bird Count ... 68

Eurasian Wigeon in Sarpy County, Nebraska ... 69

Sarpy County Spring Bird Count, May 14, 2011 ... 69

Annual Meeting at Norfolk ... 71

Subscription and Organization Information ... 79

Eurasian Wigeon In Sarpy County, Nebraska, Mark Brogie

Nebraska Bird Review

On Saturday 14 May 2011 on the Sarpy County Spring Count, Justin Rink, Jim Ducey, Ellen Brogie, and I found a Eurasian Wigeon at LaPlatte Bottoms. When first discovered the bird was in the company of multiple Gadwall and at least one adult male American Wigeon. The bird was a striking adult male bird with a rusty red head and a yellowish forehead. The breast was reddish and contrasted with the gray back and sides. This coloration made the white wing stripe more pronounced than that of the American Wigeon. The bird showed no evidence of hybridization. Multiple observers viewed …

Annual Meeting At Norfolk

Nebraska Bird Review

Sixty-six members and guests were in attendance for the 112th Annual Meeting of the Nebraska Ornithologists' Union, held at the Lifelong Learning Center at Northeast Community College in Norfolk. The meeting was organized by Dave Heidt.

Field trips were led by Mark Brogie, Bill Flack, Dave Heidt, Jan Johnson, Wayne Mollhoff, Don and Janis Paseka, and Duane Wolff. Destinations included the Norfolk cemeteries, Ta-Ha-Zouka Park, Yellowbanks WMA, Olson Nature Preserve, wet meadows along Beaver Creek in Boone Co., Hackberry Creek WMA, Grove Lake WMA, the Plainview sewage lagoon, northern Knox Co., Buckskin Hills WMA, Ponca SP, Elk Point Bend WMA, …

Sand Colic: Risk Factors, Detection, Treatment, And Prevention, Kerry A. Rood, Colette Tebeau

All Current Publications

This publication explains factors, detection, treatment and prevention for sand colic in horses.

Personality Traits Predict Hierarchy Rank In Male Rainbowfish Social Groups, Mathieu Colléter, Culum Brown

Sentience Collection

Personality traits are becoming increasingly important in explaining adaptive individual differences in animal behaviour and probably represent a leading edge of the evolutionary process. Despite the newfound interest in animal personality among behavioural ecologists, fewstudies have investigated the link between personality traits and fitness measures. We examined this link using male rainbowfish, Melanotaenia duboulayi, as a model species and found that a range of personality traits (aggression, activity and boldness) covaried with a male’s position in a hierarchy, which is directly related to reproductive success in this and many other species. Dominant fish were more aggressive, active, bold and also …

Sarpy County Spring Bird Count, May 14, 2011

Nebraska Bird Review

List of the 174 bird species tallied during the annual Sarpy County Spring Bird Count, May 14, 2011.

Spring Field Report, March 2011 To May 2011, W. Ross Silcock

Nebraska Bird Review

There was a nice mix of interesting phenomena this spring, notably a big influx of migrant warblers. Species that are normally uncommon were reported in good numbers, 30 or more each: Chestnut-sided, Magnolia, Blackburnian, Palm, and Northern Waterthrush, and species that normally occur in very low numbers approached double digits: Blue-winged, Golden-winged, Cape May, and Baybreasted. Southeastern species continue to expand in se. Nebraska, notably Cerulean and Kentucky Warblers and Summer Tanager. A few rarities showed up, most spectacular an alternate-plumaged female Red Phalarope, the first such record for Nebraska, which was captured on video by Nebraska Non-Game TV. Other …

Subscription And Organization Information [June 2011]

Nebraska Bird Review

The Nebraska Bird Review is published quarterly by the Nebraska Ornithologists' Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $15 in the United States, $18 in Canada, and $30 in all other countries, payable in advance. Single copies are $4 each, postpaid, in the United States, $5 in Canada, and $8 elsewhere. Send orders for back issues to Anita Breckbill, NOU Librarian, c/o Music Library, WMB 30, University of Nebraska, Lincoln, NE 68588-0101 (or at the email address listed below).

Memberships in the NOU …

High Species Count At Annual Sarpy County Spring Bird Count, Clem Klaphake

Nebraska Bird Review

On May 14, 2011, participants in the Annual Sarpy County Spring Bird Count tallied 174 species, besting the previous high count of 143 (in 2006 and 2010) by 31 species. There were a few more counters this year than in most previous years, but it was just a good year for many families of birds. There were 28 warbler species seen (previous high was 23 in 2008). Also found were 4 terns, 9 flycatchers, 7 woodpeckers, 12 ducks, 14 shorebirds and 3 grebes. There are often unusual species that show up on the count, as illustrated by a Eurasian Wigeon …

Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2010 Virginia Shellfish Aquaculture Crop Reporting Survey, Thomas J. Murray, Karen Hudson

Reports

Recent growth of the shellfish aquaculture industry in Virginia has added significant value to the state’s seafood marketplace. Today, watermen continue to harvest both hard clams and oysters from the state’s public resources, albeit at diminished rates. At the same time, Virginia’s watermen-farmers are providing growing quantities of additional quality shellfish to consumers. Following the lead of the hard clam industry, there has been a significant transition to intensive aquaculture of native oysters in recent years. The once extensive oyster planting has disappeared primarily as a result of endemic oyster diseases and increasing wildlife predation of seed oysters. In its …

Sustainable Food: New York Organic Dairy Market Conditions And Recommendations For Policy Reform, Dylan H. Hawkins

Honors Theses

This paper questions the sustainability of the American dairy industry through an examination of the current organic milk industry of New York State, with special attention paid to three interests: consumer welfare, farmer welfare, and the environment. Many consumers envision an agrarian ideal of grazing cows on pasture when they think of a dairy farm; milk-marketing companies often perpetuate this image. Unfortunately, most dairy cows in America do not enjoy such idyllic lives. History shows that consolidation of the American food system has led to major transformations in dairy farming. As a result, consumers have had limited access to high …

Major Factors Or Inputs Affecting Profitability Of Beef Cow Herds In The Western United States, J. Severe, D. R. Zobell

All Current Publications

This publication discusses issues and areas that affect profitability of beef cow herds in the western United States.

Bovine Viral Diarrhea Beef-Herd Risk Assessment, Kerry A. Rood, C Kim Chapman

All Current Publications

This publication gives insite into understanding where the greatest risk to a herd is, relative to the introduction of bovine viral diarrhea (BVD).

Studying Milk Coagulation Kinetics With Laser Scanning Confocal Microscopy, Image Processing, And Computational Modeling, Richard Joseph Hennessy

Master's Theses

The kinetics of milk coagulation are complex and still not well understood. A deeper understanding of coagulation and the impact of the relevant factors would aid in both cheese manufacturing and also in determining the nutritional benefits of dairy products. A method using confocal microscopy was developed to follow the movement of milk fat globules and the formation of a milk protein network during the enzyme-induced coagulation of milk. Image processing methods were then used to quantify the rate of coagulation. It was found that the texture of the protein network is an indicator of the current status of the …

The Ma-10 Cell Line As A Model Of Insl3 Regulation And Leydig Cell Function, Mary E. Strong

Master's Theses

Leydig cells produce testosterone in response to luteinizing hormone (LH) via the cyclic adenosine monophosphate (cAMP)/protein kinase A pathway. Additionally, these cells are responsible for producing insulin-like peptide 3 (INSL3), a peptide hormone that is essential for testicular descent. The insl3 promoter in Leydig cells can be activated by cAMP through the transcription factor Nur77, which has also been shown to regulate the promoters of the steroidogenic enzymes, cyp17 and 3b-hsd. While the mechanism of LH action on testosterone production is well characterized, the effect of LH on insl3 abundance has yet to be shown directly. The MA-10 …

Annual Report - 2010 Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In Chesapeake Bay: The Chesapeake Bay Multispecies Monitoring And Assessment Program, Christopher F. Bonzek, James Gartland, Robert J. Latour

Reports

Historically, fisheries management has been based on the results of single‐species stock assessment models that focus on the interplay between exploitation level and sustainability. There currently exists a suite of standard and accepted analytical frameworks (e.g., virtual population analysis (VPA), biomass dynamic production modeling, delay difference models, etc.) for assessing the stocks, projecting future stock size, evaluating recovery schedules and rebuilding strategies for overfished stocks, setting allowable catches, and estimating fishing mortality or exploitation rates. A variety of methods also exist to integrate the biological system and the fisheries resource system, thereby enabling the evaluation of alternative management strategies on …