Animal Sciences Commons^™

Stock Market Reactions To Unfavorable Product Information: A Case Study Of Comments On Beef Safety Made On An Oprah Winfrey Show, Elpida Ormanidou, Michael Thomsen

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

This study examines the impact of unfavorable media coverage on the stock market prices of major food companies, an issue of increasing importance to the food industry. The study focuses on the 16 April 1996 Oprah Winfrey Show, a popular television program that raised questions about the safety of the U.S. beef supply. The show resulted in considerable controversy, and some cattle feeders blamed the show for a drop in cattle prices. The focus of this study is on the impact of the program at other stages of the food system. We examined the stock returns of two major beef …

Reproductive Behavior Of The Emu, Reema A. Persad, Douglas James, Nicholas B. Anthony

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Members of a flock of male and female emus were observed in an ethological experiment designed to investigate trends in reproductive behavior exhibited during the North American mating season, which lasts from October to mid-March. Observations were made at dawn, noon, and dusk from December 1999 to mid-March 2000, and the only behaviors that were consistently expressed during these times were pecking, strutting, exclusive, and male and female sexual activities (defined in text). Though statistical significance was found between male strutting behavior and female sexual activity in the December observation period, no overall significance or significance at other observation periods …

Growth And Performance Of Broiler Chicks During The Starter And Grower Phases In Phase-Feeding, L. Niki Loupe, Jason L. Emmert

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

An experiment was conducted to evaluate the efficacy of a nutrition program referred to as “phase-feeding” (PF) over the first 6 weeks posthatching. Diets were formulated using amino acid recommendations from the National Research Council (NRC) (1994) or from linear regression equations generated from best estimates of lysine (Lys), sulfur amino acid (SAA), and threonine (Thr) requirements. Regression equations were used to predict weekly Lys, SAA, and Thr requirements for use in a PF regimen that involved lowering amino acid levels following each respective week of the experiment, resulting in six diets fed over the 6-week period. Over the entire …

Abstracts From The Student Presentations Of The Arkansas Chapter Of Gamma Sigma Delta, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Livability Of Leghorn Balut Embryos Stored Under Varying Temperatures And Storage Times, Joyce Jong, F. Dustan Clark

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Baluts are fertile chicken or duck eggs that have been incubated and removed from the incubator prior to hatching for consumption. Chicken eggs are incubated for 11 to 14 days and duck eggs are incubated for 16 to 20 days. Baluts have an extremely specialized consumer market, with the majority of its consumers of Filipino decent. Current U.S. Department of Agriculture regulations for the storage of baluts prior to sale is 7.2ºC, the same as for infertile commercial table eggs. Consumer preference is to purchase live baluts for consumption. Since exposure to 7.2ºC causes embryo mortality within 8 hours of …

A Study On The Fishes Of Edremit Bay (Aegean Sea)Hatice Torcu, Zeliha Aka, Hati̇ce Torcu, Zeli̇ha Aka

Turkish Journal of Zoology

This investigation was carried out for the determination of fish species living in Edremit Bay (Aegean Sea). Morphometric and meristic characters of fishes caught by trawl and various nets from five stations determined in Edremit Bay in the years 1996- 1997 were examined. Some morphological and ecological properties, local names and distributions to stations of 68 determined species are given. These species are new records for Edremit Bay of Aegean Sea.

Freshwater Isopod Species (Crustacea) Of Turkish Thrace And Their Distribution, Belgi̇n Çamur Eli̇pek, Ti̇mur Kirgiz

Turkish Journal of Zoology

This study was undertaken to determine the freshwater Isopod fauna of Turkish Thrace. Samples were collected during the years 1985-1987, 1989-1992 and 1994-1997. According to the results, Asellus (Asellus) aquaticus(L.) Racovitza, Asellus (Asellus) hilgendorfiBovallius, Asellus (Proasellus) infirmus Birstein belonging to the genus Asellus of the Asellidae family and Jaera (Jaera) sarsi Valkanov belonging to the genus Jaeraof the Janiridae family were determined. Of the species, Asellus (Asellus) hilgendorfi Bovallius, Asellus (Proasellus) infirmus Birstein and Jaera (Jaera) sarsi Valkanov are new records for Turkey. The worldwide distributions of these species are included.

Short Term Secondary Production And Population Dynamics Of Crustacea And Rotifera In Three Different Biotopes Of Neusiedler See (Austria), Nuray Emi̇r Akbulut

Turkish Journal of Zoology

This paper describes the population dynamic parameters of the two cructaceans Diaphanosoma mongolianum, Arctodiaptomus spinosus and four rotifer species which are Filinia longiseta, Hexartra mira, Brachionus angularis and Polyartha vulgaris.

Benthi-Planktivorous Fish-Induced Low Water Quality Of Lake Eymir Before Biomanipulation, Meryem Bekli̇oğlu, S. Levent Burnak, Özlem İnce

Turkish Journal of Zoology

In this study, Lake Eymir, Eymir inflow 1, Kışlakçı brook and Eymir outflow were sampled monthly betwen March 1997and April 1998 for physico-chemical and biological parameters. Within the catchment of the lake, there are small-scale industries, sewage effluent of TEK residence and recreational activities causing high concentrations of dissolved inorganic nitrogen (DIN) and total phosphorus (TP) in the eymir inflow 1 and in Kışlakçı brook. In Lake Eymir although diversion of sewage effluent of the Mogan municipality to İmrahor valley appeared to have led to a decrease in TP and DIN concentrations compared with those found in 1994, especially the …

Management Of A Bioeroding Sponge On The Pearl Oyster, Pinctada Maxima, Luisa Rawlinson

Theses : Honours

This thesis examines environmentally and economically viable ways to manage a sponge that is bioeroding the pearl oyster, Pinctada maxima, in pearl oyster farms throughout north-western Australia. The sponge is causing a massive loss in revenue to the pearling industry as a result of damage to the half-shell, the pearl and, often, death of the oyster. The information arising from this study is important for pearl producers and the Australian pearling industry, to ensure that the best quality P. maxima can be grown in a way that will not have adverse effects on the pristine environment in which these …

Dietary Phosphorus Effects On Waste Management And Nutrient Balance In The Feedlot, Galen E. Erickson, Terry J. Klopfenstein, Todd Milton, Daniel T. Walters

Nebraska Beef Cattle Reports

Four experiments were conducted, two with calves in the winter/spring and two with yearlings during the summer, to evaluate the effects of decreasing dietary phosphorus on nutrient balance in the feedlot. The control diets averaged .38% phosphorus, whereas the experimental diets were formulated to not exceed requirements (~.25%). Phosphorus excretion was reduced by feeding the lower phosphorus diet. Phosphorus removed in manure at cleaning was not different. However, when manure was corrected for soil phosphorus, phosphorus removal was decreased by 59% in the summer trials and 38% in the calf trials during the winter/spring by feeding the experimental diet.

Effect Of Increasing Dietary Corn Silage On Performance, Digestibility And Nitrogen Mass Balance In The Feedlot, Galen E. Erickson, Terry J. Klopfenstein, Todd Milton, Ryan Mass

Nebraska Beef Cattle Reports

Three dietary corn silage levels (15, 30, and 45% of diet DM) were evaluated in corn finishing diets fed to calves through the winter/spring and yearlings during the summer to determine effects on performance and nitrogen mass balance in feedlot. Yearling gains decreased quadratically with increasing corn silage; however, N and OM removed in manure was greatest for the 30% silage treatment. Calf gains decreased linearly as silage increased; however, N and OM removed in manure was greatest for the 45% silage treatment. Increasing dietary corn silage resulted in decreased gains but did influence manure N with no effect on …

Adding Value To Low-Quality Beef Muscles Through Glycolytic Inhibition In Pre-Rigor Muscle, Nancy Jerez, Chris R. Calkins, Jesus Velazco

Nebraska Beef Cattle Reports

Pre-rigor Semimembranosus, Triceps brachii and Supraspinatus muscles were removed from 10 steers to determine effects of several glycolysis-inhibiting compounds on pH, tenderness and color. Muscles were injected and tumbled with 10% of sodium citrate, sodium fluoride, sodium acetate, or calcium chloride. Sodium citrate and sodium fluoride increased pH values in Semimembranosus, Triceps brachii and Supraspinatus. Tenderness improved in Triceps brachii and Supraspinatus with calcium chloride, sodium fluoride and sodium citrate when compared with controls. Color values were not different among treatments. Sodium citrate and sodium fluoride were successful in improving beef tenderness by maintaining a high pH in pre-rigor …

Exporting Feedlot Manure To Off-Farm Users, Richard K. Koelsch, Keith Glewen, Tom Trewhitt, Daniel T. Walters

Nebraska Beef Cattle Reports

A survey of Nebraska feedlots suggests the majority of feedlots do not export manure to off-farm customers despite a common lack of land base (owned or managed by the feedlot) for using the nitrogen and phosphorus in manure. Only a small portion of the feedlots in Nebraska are actively marketing manure as a product with value by packaging agronomic and nuisance avoidance services with the manure in an effort to enhance its value. A separate survey of manure users suggests that the reason users purchase manure was for its crop nutrient value. However, many users were uncomfortable relying on the …

Feed Program Impact On Land Requirements For Managing Manure Nutrients From A Feedlot, Richard K. Koelsch

Nebraska Beef Cattle Reports

Using data from UNL feeding trials (1998 Nebraska Beef Report, pp. 86- 88) designed to compare the impact of protein and phosphorus intake on nutrient excretion, an estimate is made of the land requirement for manure application. A balanced diet formulated using the 1996 NRC was compared to other typical feed rations. The standard industry ration required an additional 100 and 400 acres of land to manage the additional manure nitrogen and phosphorus excreted, respectively, by a 1,000 head feedlot. A spreadsheet tool is introduced for estimating land requirements for manure produced by alternative feeding programs.

Growth Implants For Heifers, Terry L. Mader

Nebraska Beef Cattle Reports

In a 110-d experiment, feedlot heifers (mean initial weight = 820 lb) that received an estradiol benzoate (EB) + trenbolone acetate (TBA) implant, Synovex® Plus™, gained faster and more efficiently than sham-implanted (control) heifers. Heifers that received only TBA implants had lower intakes and lower quality grades than control heifers, but were more efficient in feed conversion than control and EB implanted heifers. On the basis of improved yield grade and larger ribeye areas, along with no increases in fatness, the combined use of EB and TBA provided for greater quantities of lean meat from higher priced cuts than did …

Supplementing Metabolizable Protein To Yearling Heifers Grazing Winter Range, Trey Patterson, Don C. Adams, Terry J. Klopfenstein, Jacqueline A. Musgrave, Andy Applegarth

Nebraska Beef Cattle Reports

Two experiments were conducted with pregnant yearling heifers grazing Sandhills winter range to evaluate response of supplementing to meet the metabolizable protein requirement of the heifers versus conventional supplementation based on crude protein. Supplements were fed from October to February (pre-calving) both years. Intake was measured in November, January and February of the first year. Supplementing to meet metabolizable protein requirement improved the heifers’ ability to maintain weight in year one, but not in year two. Heifer intakes ranged from 2.2% of BW in November to 1.5% in February. Feeding hay reduced body weight loss compared to no hay feeding …

Evaluation Of The 1996 Beef Cattle Nrc Model Predictions Of Intake And Gain For Calves Fed Low Or Medium Energy Density Diets, Trey Patterson, Terry J. Klopfenstein, Todd Milton, Dennis R. Brink

Nebraska Beef Cattle Reports

Data from feeding 54 diets in seven previous beef cattle growing studies were used to evaluate the 1996 NRC model for the accuracy of intake and gain predictions. Calf weights and diets were inputs into the model, and actual intakes were used to calculate predicted gain and actual gains were used to calculate predicted intakes. The model over-predicted calf intakes on low quality diets and under-predicted intakes on high quality diets. The model over-predicted gains on high quality diets and under-predicted gains on low quality diets. The NRC model did not accurately predict performance of cattle on low quality roughage …

Historic Birds Of Lincoln's Salt Basin Wetlands And Nine-Mile Prairie, Paul A. Johnsgard

Nebraska Bird Review

The changes that have occurred in the bird life of the Lincoln area during the past century must certainly be great, but we have little evidence to document this point. There is, however, an annotated bird list from 1900 for the salt basin wetlands of western Lincoln, an area then gradually being developed for recreational use. This list was published by J. S. Hunter in the Proceedings of the First Annual Meeting of the Nebraska Ornithologists' Union (1900, 18-21). At this time, the recently impounded but still saline lake was 2 to 3 feet deep, and it covered about two …

Book Review: Birds Of The Untamed West. The History Of Birdlife In Nebraska, 1750 To 1875 By James E. Ducey, W. Ross Silcock

Nebraska Bird Review

Those with an interest in the birds of the Great Plains will be familiar with Jim Ducey's Nebraska Birds: Breeding Status and Distribution, published in 1988. I was amazed then by Jim's diligence in searching a wide range of sources and compiling an exhaustive list of Nebraska breeding records organized by county. Jim's new book, Birds of the Untamed West, reflects the same dogged pursuit of obscure sources unavailable to most of us and compilation of the results. If you expect such a compilation to be dry and boring, you will be pleasantly surprised, especially if you are …

Summer Field Report, June And July 2000, W. Ross Silcock

Nebraska Bird Review

I wish to remind observers to report dates of breeding evidence, such as nests with eggs and adults feeding fledglings. There is surprisingly little known about these things for Nebraska's breeding birds, even the common ones. Please report these regardless of the season!

This summer produced many interesting sightings; we'll lead off with significant breeding records: Snowy Plover provided a 2nd state breeding record; Black-necked Stilt a first for Keith Co; Acadian Flycatcher first for Thurston Co; Summer Tanager first for Otoe Co; and Eurasian Collared-Dove 3rd nesting locality, at Elmwood.

Late spring migrants included a record late Tennessee Warbler …

Virginia's Warblers In Kimball County, Stephen J. Dinsmore, Joe Fontaine

Nebraska Bird Review

This fall 2000 season was marked by a very westerly flavor to the passerine migration with many sightings of western warblers, vireos, and flycatchers in western Nebraska. Most notably, Townsend's Warblers and Cassin's Vireos were seen in good numbers. Additionally, three sightings of Virginia's Warbler and five of Dusky Flycatcher added to the excitement. In this note, we report this fall's sightings of Virginia's Warbler and comment on the status of this species in Nebraska.

On 26 August 2000, Dinsmore observed a Virginia's Warbler (Vermivora virginiae) along the north side of Oliver Reservoir. He studied the bird at …

Black-Throated Gray Warbler At Oliver Reservoir, Stephen J. Dinsmore

Nebraska Bird Review

On 1 May 1999, I was birding a point along the north shore of the lake when I encountered as small. flock of Yellow-rumped and Orange-crowned Warblers. At approximately 8:06 a.m. I was working my way through the flock when I heard a different chip note. The bird was feeding in a nearby tree, and I immediately recognized it as a male Black-throated Gray Warbler. I was able to study the bird at close range until 8:16 a.m. The bird was roughly the size of an Orange-crowned Warbler and was noticeably smaller and shorter-tailed than a Yellow-rumped Warbler. The head …

First Record Of A Brambling For Nebraska, Stephen J. Dinsmore

Nebraska Bird Review

On 14 April 1999, an unusual bird was reported visiting the feeders of Phyllis and Dean Drawbaugh in Scottsbluff, Scotts Bluff County, Nebraska. The bird apparently arrived on 13 April immediately after the passage of a cold front with strong northwest winds. On 18 April, the Drawbaughs identified the bird as a female Brambling, and local birders Alice Kenitz and Helen Hughsen confirmed the sighting later that day. On 19 April, I made the trip to Scottsbluff and studied the bird from 7:51-8:55 a.m. in the company of the Drawbaughs, David Ely and Rachel Kolokoff, both of Fort Collins, Colorado. …

Gray Flycatcher At Oliver Reservoir, Stephen J. Dinsmore, Loren Padelford, Babs Padelford

Nebraska Bird Review

On 17 May 1999, we were birding near the main entrance of Oliver Reservoir State Recreation Area in Kimball County, Nebraska. At 8:05 a.m. we found a very gray empidonax flycatcher in the scattered trees south of the main entrance. After studying the bird for a few minutes, we concluded that the bird was a Gray Flycatcher. We studied and photographed the bird at close range until we left at 8:55 a.m.

The 1999·2000 Nebraska Christmas Bird Count, Stephen J. Dinsmore

Nebraska Bird Review

The 1999·2000 Christmas Bird Count (CBC) period included ten counts in Nebraska (Table 2). These counts reported a total of 133 species, a great total for so few counts. Counts were scattered statewide, but most effort was in the eastern half of the state where most of the birders are. The top count this year was Lake McConaughy, where the combination of several lingering rarities, excellent participation, and great count weather led to a new record Nebraska count of 101 species, breaking the old record of 87 species. Other excellent totals were 85 at Harlan County, 84 at Branched Oak-Seward, …

Nebraska Ornithologists' Union Fall Meeting Report, 1999

Nebraska Bird Review

The Nebraska Ornithologists' Union Fall meeting took place once again at the Nebraska National Forest at Halsey between October 8 and 10. The following table represents the count, 108 species in all, for the five areas listed. As usual, the counts for Thomas and Blaine counties exclude the National Forest land in both counties.

A Century Of Breeding Birds In Nebraska, Jackie Canterbury, Paul A. Johnsgard

Nebraska Bird Review

With the imminent publication of the Nebraska Breeding Bird Atlas and the turning of a new millennium, it is perhaps an appropriate time to survey the state of breeding birds in Nebraska. Wayne Mollhoft's summary of the N.O.U.'s Nebraska Breeding Birds Atlasing Project (Mollhoff, 2000) provides important data bases for the latter part of the past century, and the historic overview by James Ducey (1988) offers a useful basis for judging the breeding avifauna of Nebraska from about the beginning of the century. The Biological Resources Division of the U. S. Geological Survey's (WSGSBRD) annual Breeding Bird Survey data currently …

Nou Spring Count

Nebraska Bird Review

The NOU Spring meeting took place from May 19 to 21 in Chadron. Table 1 lists the 165 total species identified in five counties during this period.

A Red Pharlarope was reported in Box Butte Co. by Kathy larson. Details have been submitted to the Records Committee, and the species is not included in this table pending the committee's decision.

Reports for the following species are included in this list with the following comment suggested by W. Ross Silcock:, "No details on 10; rare in this part of NE": Northern Bobwhite, Short-billed Oowitcher, and Field Sparrow.

Review Of The Breeding Status Of Lewis's Woodpecker In Nebraska, Wayne J. Mollhoff

Nebraska Bird Review

Lewis's Woodpecker (Melanerpes lewis) was first mentioned as a possible breeder in Nebraska by Bruner (1901), who included it in a list of birds that breed in the state. None of the authorities he cited, however, had published conclusive evidence of breeding, and one of them (Bates 1900) cited only a winter record.

The species was mentioned in reports from the University of Nebraska field parties that worked in the Pine Ridge in 1900 and 1901. Crawford (1901) reports the discovery of only a single empty nest, despite weeks of fieldwork concentrated specifically on gathering nesting data on western species …