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Articles 1 - 30 of 526
Full-Text Articles in Life Sciences
How Cultured Dairy Products Can Have A Long Shelf Life And A Clean Label, Phillip S. Tong
How Cultured Dairy Products Can Have A Long Shelf Life And A Clean Label, Phillip S. Tong
Dairy Science
No abstract provided.
Walmart's Sustainability Journey: Peter Redmond And The Search For Sustainable Seafood, David G. Hyatt
Walmart's Sustainability Journey: Peter Redmond And The Search For Sustainable Seafood, David G. Hyatt
Wal-Mart Sustainability Case Project
In “Peter Redmond and the Search for Sustainable Seafood,” students examine the responses of Peter Redmond, Vice President and Divisional Merchandise Manager of Deli and Seafood, to organizational pressures to make seafood more sustainable at Walmart.
Characterization Of Atlantic Cod Spawning Habitat And Behavior In Icelandic Coastal Waters, Timothy B. Grabowski, Kevin M. Boswell, Bruce J. Mcadam, R.J. David Wells, Guđrún Marteinsdóttir
Characterization Of Atlantic Cod Spawning Habitat And Behavior In Icelandic Coastal Waters, Timothy B. Grabowski, Kevin M. Boswell, Bruce J. Mcadam, R.J. David Wells, Guđrún Marteinsdóttir
Department of Biological Sciences
The physical habitat used during spawning may potentially be an important factor affecting reproductive output of broadcast spawning marine fishes, particularly for species with complex, substrate-oriented mating systems and behaviors, such as Atlantic cod Gadus morhua. We characterized the habitat use and behavior of spawning Atlantic cod at two locations off the coast of southwestern Iceland during a 2-d research cruise (15–16 April 2009). We simultaneously operated two different active hydroacoustic gear types, a split beam echosounder and a dual frequency imaging sonar (DIDSON), as well as a remotely operated underwater vehicle (ROV). A total of five fish species 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.
Leptin Differentially Regulate Stat3 Activation In Ob/Ob Mouse Adipose Mesenchymal Stem Cells, Zhou Zhou, Manish Neupane, Hui R. Zhou, Dayong Wu, Chia-Cheng Chang, Naima Moustaid-Moussa, Kate J. Claycomb
Leptin Differentially Regulate Stat3 Activation In Ob/Ob Mouse Adipose Mesenchymal Stem Cells, Zhou Zhou, Manish Neupane, Hui R. Zhou, Dayong Wu, Chia-Cheng Chang, Naima Moustaid-Moussa, Kate J. Claycomb
Animal Science Publications and Other Works
Background
Leptin-deficient ob/ob mice exhibit adipocyte hypertrophy and hyperplasia as well as elevated adipose tissue and systemic inflammation. Multipotent stem cells isolated from adult adipose tissue can differentiate into adipocytes ex vivo and thereby contribute toward increased adipocyte cell numbers, obesity, and inflamm ation. Currently, information is lacking regarding regulation of adipose stem cell numbers as well as leptin-induced inflammation and its signaling pathway in ob/ob mice.
Methods
Using leptin deficient ob/ob mice, we investigated whether leptin injection into ob/ob mice increases adipose stem cell numbers and adipose tissue inflammatory marker MCP-1 mRNA and secretion levels. We also determined leptin …
Population Characteristics, Development Of A Predictive Population Viability Model, And Catch Dynamics For Pallid Sturgeon In The Lower Missouri River, Kirk D. Steffensen
Population Characteristics, Development Of A Predictive Population Viability Model, And Catch Dynamics For Pallid Sturgeon In The Lower Missouri River, Kirk D. Steffensen
School of Natural Resources: Dissertations, Theses, and Student Research
Population characteristics and long-term population trends of pallid sturgeon Scaphirhynchus albus in the lower Missouri River are relatively unknown. As recovery efforts continue, understanding and quantifying these characteristics and trends are critical for species recovery and future management decisions. Therefore, the objectives of this study were to determine the pallid sturgeon population characteristics, predict changes to the pallid sturgeon population based on different management and life history scenarios, and examine trot line catch dynamics in the lower Missouri River. Catch rates for pallid sturgeon collected with gill nets did not significantly change while catch rates using trot lines significantly declined …
Dietary Fat Composition Influences Tissue Lipid Profile And Gene Expression In Fischer-344 Rats, Albert L. Zhou, Korry J. Hintze, Rafael Jiménez-Flores, Robert E. Ward
Dietary Fat Composition Influences Tissue Lipid Profile And Gene Expression In Fischer-344 Rats, Albert L. Zhou, Korry J. Hintze, Rafael Jiménez-Flores, Robert E. Ward
Dairy Science
The AIN-76A diet causes fatty liver in rodents when fed for long periods of time. The aimof this study was to utilize fatty acid analysis and transcriptomics to investigate the effects of different fat sources in the AIN-76A diet on tissue lipid profiles and gene expression in male, weanling Fischer-344 rats. Animals were fed isocaloric diets that differed only in the fat source: (1) corn oil (CO) (2) anhydrous milk fat (AMF), and (3) AMF supplemented with 10 % phospholipids from the milk fat globule membrane (AMFMFGM). There were no differences in food intake, body weight, growth rate, or body …
Winter Microhabitat Foraging Preferences Of Sympatric Boreal And Black-Capped Chickadees In Michigan's Upper Peninsula, Alec R. Lindsay Ph. D., Zach G. Gayk
Winter Microhabitat Foraging Preferences Of Sympatric Boreal And Black-Capped Chickadees In Michigan's Upper Peninsula, Alec R. Lindsay Ph. D., Zach G. Gayk
Faculty Works
We examined differences in microhab- itat use between Boreal (Poecile hudsonicus) and Black- capped chickadees (P. atricapillus) where they co-occur near Marquette, Michigan, USA. Twenty-four Boreal and 37 Black-capped chickadees were followed during 60 hrs of field observation. Boreal Chickadees foraged only in three conifer species, 76% of which were black spruce (Picea mariana), while Black-capped Chickadees foraged widely across six coniferous and three deciduous tree species. Analysis of foraging data categorized by zones within conifer trees indicated high niche overlap (0.676) between Boreal and Black-capped chickadees across all foraging zones. Individual comparisons on a zone-by-zone basis revealed a significant …
Cues Used By The Black Fly, Simulium Annulus, For Attraction To The Common Loon (Gavia Immer), Meggin L. Weinandt, Michael W. Meyer, R. Mac Strand, Alec R. Lindsay Ph. D.
Cues Used By The Black Fly, Simulium Annulus, For Attraction To The Common Loon (Gavia Immer), Meggin L. Weinandt, Michael W. Meyer, R. Mac Strand, Alec R. Lindsay Ph. D.
Faculty Works
The parasitic relationship between a black fly, Simulium annulus, and the common loon (Gavia immer) has been considered one of the most exclusive relationships between any host species and a black fly species. To test the host specificity of this blood-feeding insect, we made a series of bird decoy presentations to black flies on loon-inhabited lakes in northern Wisconsin, U.S.A. To examine the importance of chemical and visual cues for black fly detection of and attraction to hosts, we made decoy presentations with and without chemical cues. Flies attracted to the decoys were collected, identified to species, and quantified. Results …
Benchmarking Cow Comfort On North American Freestall Dairies: Lameness, Leg Injuries, Lying Time, Facility Design, And Management For High-Producing Holstein Dairy Cows, Marina A.G. Von Keyserlingk, A. K. Barrientos, K. Ito, E. Galo, Daniel M. Weary
Benchmarking Cow Comfort On North American Freestall Dairies: Lameness, Leg Injuries, Lying Time, Facility Design, And Management For High-Producing Holstein Dairy Cows, Marina A.G. Von Keyserlingk, A. K. Barrientos, K. Ito, E. Galo, Daniel M. Weary
Housing and Confinement of Farm Animals Collection
In this paper, we describe a novel approach to corporate involvement in on-farm assessment, driven by the desire to provide a service for dairy producers and to create a vehicle for engagement on issues of dairy cow welfare. This program provides producers with feedback on animal-based (including gait score, leg injuries, and lying time) and facility-based (including freestall design, bedding practices, feed bunk design and management, and stocking density) measures that can be used to better address their management goals. The aim of this paper is to describe variation in the prevalence of lameness and leg injuries, lying behavior, facility …
How The Leopard Hides Its Spots: Asip Mutations And Melanism In Wild Cats, Alexsandra Schneider, Victor A. David, Warren E. Johnson, Stephen J. O'Brien, Gregory S. Barsh, Marilyn Menotti-Raymond, Eduardo Eizirik
How The Leopard Hides Its Spots: Asip Mutations And Melanism In Wild Cats, Alexsandra Schneider, Victor A. David, Warren E. Johnson, Stephen J. O'Brien, Gregory S. Barsh, Marilyn Menotti-Raymond, Eduardo Eizirik
Biology Faculty Articles
The occurrence of melanism (darkening of the background coloration) is documented in 13 felid species, in some cases reaching high frequencies at the population level. Recent analyses have indicated that it arose multiple times in the Felidae, with three different species exhibiting unique mutations associated with this trait. The causative mutations in the remaining species have so far not been identified, precluding a broader assessment of the evolutionary dynamics of melanism in the Felidae. Among these, the leopard (Panthera pardus) is a particularly important target for research, given the iconic status of the ‘black panther’ and the extremely …
From Not So Simple A Beginning: The Voyage Of The Beagle To The Voyage Of The Endeavour Retracing The Steps Of Charles Darwin In The Galapagos Islands, Kathleen Carroll
From Not So Simple A Beginning: The Voyage Of The Beagle To The Voyage Of The Endeavour Retracing The Steps Of Charles Darwin In The Galapagos Islands, Kathleen Carroll
Honors College
This is a natural history exploration of the behavior and distinct features of common vertebrates of the Galápagos Islands. Covering more than 26 species, this journey of observation begins with an in-depth look at Charles Darwin's field notes, and moves through history to examine how the knowledge about these species has changed. It is finalized with my personal experiences after a ten day journey exploring the islands with the crew of the National Geographic vessel, the Endeavour. My understanding of the species is solidified through my notes, sketches, films and photographs.
While journeying through the islands I carried a professional-grade …
Ghost Tiger Beetle (Cicindela Lepida): Species Conservation Assessment, Melissa J. Panella
Ghost Tiger Beetle (Cicindela Lepida): Species Conservation Assessment, Melissa J. Panella
Nebraska Game and Parks Commission: Publications
The primary goal in development of at-risk species conservation assessments is to compile biological and ecological information that may assist conservation practitioners in making decisions regarding the conservation of species of interest. The Nebraska Natural Legacy Project recognizes the ghost tiger beetle, a.k.a. white tiger beetle, (Cicindela lepida) as a Tier I at-risk species of high conservation priority. Some general management recommendations are made here regarding ghost tiger beetles; however, conservation practitioners will need to use professional judgment to make specific management decisions based on objectives, location, and a multitude of variables. This resource was designed to share available knowledge …
Bellevue Fall Field Days, Janis Paseka
Bellevue Fall Field Days, Janis Paseka
Nebraska Bird Review
The 2012 NOU Fall Field Days was held in conjunction with the Inland Bird Banding Association meeting at Fontenelle Forest Nature Center in Bellevue on October 26–28. The meeting, organized by Betty Grenon and Rick Schmid, drew a total of 104 attendees, including 33 members of the Inland Bird Banding Association.
On Friday evening, Phil Swanson's photographic presentation "Welcome to Omaha . . . It's for the Birds" included a brief history of Omaha, an overview of area birding hotspots, and photos of many of the birds which can be seen in the area. Following the presentation, a group led …
Subscription And Organization Information [December 2012]
Subscription And Organization Information [December 2012]
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 …
Index To Volume 80
Nebraska Bird Review
Addy, Darren 47, 75
Albrecht, Jeff 75
Albright, Patty 111
Allen, Edward 128
Allison, Scott 28, 48
American Ornithologists' Union 120
Anderson, Leif 129
Anthony, Courtney 75
Armknecht, Henry 88
Arnett, Gladys 128
Avocet, American 54, 79, 93, 137
. . .
Wren: Bewick's 99; Carolina 13, 36–37, 63, 99, 110, 147, 161; House 63, 81, 99, 106–110, 147; Marsh 13, 36-37, 63, 81, 99, 147, 161; Rock 63, 99, 119, 147; Sedge 63, 81, 99, 108, 147; Winter 13, 36–37, 63, 147, 160
Wright, Rick 48
Yellowlegs: Greater 10, 54, 93, 137, 160; Lesser 46, 54, 79, 93, 137 …
Nebraska Bird Review (December 2012) 80(4), Whole Issue
Nebraska Bird Review (December 2012) 80(4), Whole Issue
Nebraska Bird Review
Fall Field Report, August–November 2012 … 126
Bellevue Fall Field Days ... 158
Notes on a Greater Sage-Grouse Record by Levi L. Mohler ... 162
Index to Volume 80 ... 164
Subscription and Organization Information ... 175
Notes On A Greater Sage-Grouse Record By Levi L. Mohler, Mark A. Brogie
Notes On A Greater Sage-Grouse Record By Levi L. Mohler, Mark A. Brogie
Nebraska Bird Review
In Nebraska, Greater Sage-Grouse has been considered an uncommon casual winter visitor in the extreme northwest (Sharpe et al. 2001). This species may now be extirpated in Nebraska due to habitat loss. There have been no known Nebraska observations of Greater Sage-Grouse in the last 25 years. The only documented record accepted by the NOURC of Greater Sage-Grouse in Nebraska (Accession #243) is a description of an adult male in September 1987 in extreme northwest Sioux County by Douglas Kapke (Grenon AG. 1990).
In 2002 Wayne Mollhoff received the following record from Levi L. Mohler and submitted it to the …
Fall Field Report, August–November 2012, W. Ross Silcock
Fall Field Report, August–November 2012, W. Ross Silcock
Nebraska Bird Review
Some of you may be curious about the sources of sightings I use to compile these reports. The primary sources are reports posted to NEBirds, the Nebraska Listserv, along with the full reports (early and late dates, peak counts for all species) sent by a few faithful reporters around the state. The latter reports are very useful overviews of movements in the reporters' regions. Lately, thanks to a suggestion by Clem Klaphake, I have been receiving the eBird daily rarity report for Nebraska which I find to be an excellent check against reports posted to NEBirds, while providing a few …
Product Pig Production Planner, Scott Williams, Darrell Rothlisberger
Product Pig Production Planner, Scott Williams, Darrell Rothlisberger
Archived Agriculture Publications
There are many factors to consider when selecting a market hog for your 4-H project animal. Seek out reputable hog producers who produce hogs with high quality genetics and growth potential. Discuss the health and feeding program the hogs have received and follow these recommendations to assure your project animal can reach its growth potential.
Reducing Yellowtail Flounder Bycatch In The Sea Scallop Dredge Fishery: Twine Top Modifications, Kelli Milleville Wright, David Rudders, William D. Dupaul
Reducing Yellowtail Flounder Bycatch In The Sea Scallop Dredge Fishery: Twine Top Modifications, Kelli Milleville Wright, David Rudders, William D. Dupaul
Reports
No abstract provided.
The Impact Of Genetic Background On Body Temperature Regulation In Beef Cattle During Periods Of Heat And Cold Stress., Jeremy T. Howard
The Impact Of Genetic Background On Body Temperature Regulation In Beef Cattle During Periods Of Heat And Cold Stress., Jeremy T. Howard
Department of Animal Science: Dissertations, Theses, and Student Research
Cattle are reared in environments that differ and vary greatly in climate, thus the ability to regulate body temperature across multiple environments is essential. However, inherent differences between animals do exist and can influence their response to extreme temperatures. The objectives of the current study were to model the impact of myostatin genotype (MG) on body temperature during heat and cold stress and conduct a genome-wide association study (GWAS) to better understand the genetic basis of body temperature regulation during extreme temperatures.
Crossbred steers and heifers (n= 239) with varying degrees of Piedmontese influence were fed in four groups over …
Beef Cattle Production: Understanding The Effect Of Heifer Development System, Late Gestation Protein Supplementation, And Ovarian Steroidogenic Environment On Productivity, Reproduction, And Longevity, Adam Summers
Department of Animal Science: Dissertations, Theses, and Student Research
Beef cattle longevity is related to reproductive success, which can be influenced by development system and maternal environment. Three experiments were conducted to determine the impact of development system, maternal protein supplementation, and ovarian steroidogenic environment on beef cattle reproduction. Experiment 1 evaluated the effect of heifer development system on heifer performance and reproduction. Heifers developed on corn residue (CR) had reduced BW from prebreeding through pregnancy diagnosis compared with drylot (DL) developed heifers, but there was no difference in reproductive performance. A subset DL and CR heifers were placed in an individual feeding system to …
The Effects Of Social And Environmental Enrichments On Leg Strength And Welfare Of Tomturkeys, Patricia A. Weber
The Effects Of Social And Environmental Enrichments On Leg Strength And Welfare Of Tomturkeys, Patricia A. Weber
Department of Animal Science: Dissertations, Theses, and Student Research
Two trials (T1, T2) were conducted to determine the effects of enrichment: A) broiler chick addition on early mortality and B) providing environmental enrichments on leg strength and welfare of tom turkeys. Trial 1A utilized 248 1d poults and 8 3d broiler chicks. Four pens of 32 poults were placed for the control. Four pens of 30 poults and two 3d broiler chicks were placed for the trt group. Trial 2A utilized 296 1d poults and 24 3d broiler chicks. Four trts were randomly divided among 16 pens (20 birds/pen). Trt 1 brooders were placed with assistance finding resources. Trt …
Assessment Of The Economic Impacts Of Recreational Boating In Virginia, Thomas J. Murray
Assessment Of The Economic Impacts Of Recreational Boating In Virginia, Thomas J. Murray
Reports
Virginia is home to more than 200,000 recreational boats, providing a gateway to marine recreation in Chesapeake Bay and offshore waters. Virginia’s importance to boating access carries with it an expanding economy related to boating and boating related industries.
In addition to the large group of boater-citizens who reside in Virginia, local marine businesses such as marinas also provide access and berthing to many non-locally owned watercraft. While watercraft registrations provide a partial and useful estimate of the stock of boats in a region, the true economic impact arising from recreational boating primarily depends upon the type of boats as …
Harmful Algal Bloom (Hab) Primer For The Virginia Shellfish Industry, Kimberly S. Reece, Karen Hudson
Harmful Algal Bloom (Hab) Primer For The Virginia Shellfish Industry, Kimberly S. Reece, Karen Hudson
Reports
No abstract provided.
Blue Crab Industry - Oyster Aquaculture Training And Transition June 2011- June 2012 Final Report, Matthew Richmond
Blue Crab Industry - Oyster Aquaculture Training And Transition June 2011- June 2012 Final Report, Matthew Richmond
Reports
No abstract provided.
Winter Ecology Of Sandhill Cranes (Grus Canandensis) In Northern Mexico, Ingrid Barcelo
Winter Ecology Of Sandhill Cranes (Grus Canandensis) In Northern Mexico, Ingrid Barcelo
School of Natural Resources: Dissertations, Theses, and Student Research
Sandhill Cranes (Grus canadensis) are a widespread species in North America and one of the most studied cranes in the world. However, most of the research has focused on the breeding grounds of Canada and Alaska and the staging grounds of Nebraska. Although an important proportion of the Mid-continent Population of Sandhill Cranes winters in northern Mexico, little information exists on distribution, status, and ecology of the species in Mexico. The goal of this dissertation was to provide new information on Sandhill Crane winter ecology from a regional perspective to better understand population trends. I examined the physiological …
Daily Water Consumption Of Turkeys Raised In Utah, David Frame
Daily Water Consumption Of Turkeys Raised In Utah, David Frame
All Current Publications
This publication explains why knowing the daily water consumption of poultry is so important whenit comes to administering medication and vaccines safely and effectively.
Molecular Phylogeny Of Microhylid Frogs (Anura: Microhylidae) With Emphasis On Relationships Among New World Genera, Rafael O. De Sá, Jeffrey W. Streicher, Relebohile Sekonyela, Mauricio C. Forlani, Simon P. Loader, Eli Greenbaum, Stephen Richards, Célio F.B. Haddad
Molecular Phylogeny Of Microhylid Frogs (Anura: Microhylidae) With Emphasis On Relationships Among New World Genera, Rafael O. De Sá, Jeffrey W. Streicher, Relebohile Sekonyela, Mauricio C. Forlani, Simon P. Loader, Eli Greenbaum, Stephen Richards, Célio F.B. Haddad
Biology Faculty Publications
Background: Over the last ten years we have seen great efforts focused on revising amphibian systematics. Phylogenetic reconstructions derived from DNA sequence data have played a central role in these revisionary studies but have typically under-sampled the diverse frog family Microhylidae. Here, we present a detailed phylogenetic study focused on expanding previous hypotheses of relationships within this cosmopolitan family. Specifically, we placed an emphasis on assessing relationships among New World genera and those taxa with uncertain phylogenetic affinities (i.e., incertae sedis).
Results: One mitochondrial and three nuclear genes (about 2.8 kb) were sequenced to assess phylogenetic relationships. We utilized an …