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G83-675 Yield Grades And Quality Grades For Lamb Carcasses, Dennis E. Burson, Ted Doane

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide discusses yield and quality grades for lamb carcasses and their importance to producers.

Lamb carcass grades when applied by a USDA meat grader must consist of a yield grade and a quality grade. Yield grades estimate the percentage of closely trimmed, boneless retail cuts from the leg, loin, rib and shoulder. Quality grades indicate the palatability or eating characteristics of lamb.

Evaluating lamb carcasses for USDA Yield and Quality Grades recognizes carcasses with traits that influence live animal and carcass value, and identifies breeding animals that produce lambs of superior carcass merit.

G83-681 Velvetleaf, Fred Roeth, Russell Moomaw, Alex Martin, Orvin Burnside

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide provides guidelines on how to control velvetleaf by prevention, cultural and mechanical methods, and by use of recommended herbicides.

Velvetleaf (Abutilon theophrasti Medic.), a member of the Mallow family, is related to cotton, hollyhocks, and numerous weeds. Other common names include buttonweed, Indian mallow, butterprint, piemarker, velvetweed, and cottonweed. The preferred name, velvetleaf, amply describes its velvety-textured, hairy-surfaced leaves.

A native of China and presumably introduced into the U.S. from India as a fiber crop, this annual weed is adapted to cropland throughout most of the United States. Over the past 10 years, velvetleaf has increased dramatically …

Scaring Of Carrion Crows (Corvus Corone Corone) By Species-Specific Distress Calls And Suspended Bodies Of Dead Crows, Luzia Naef-Daenzer

Bird Control Seminars Proceedings

In Switzerland, carrion crows can cause considerable damage to sprouting corn fields when feeding on the germinated corn. I tried to evaluate a method to prevent these damages. The use of species-specific distress calls, for the first time described by Frings and Jumber (1954), seemed to be the most promising method. Agronomes and biologists have applied it in field studies to several different bird species causing damage in agriculture and on airports (e.g., Gramet, 1962; Brough, 1968). However, the literature either describes single actions or several different scaring devices being used together. To be able to judge the method, quantitative …

G83-666 Breeding Soundness Examination Of Beef Bulls, James A. Gosey

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide describes factors to consider when evaluating a beef bull's reproductive ability. These include the reproductive tract, semen and mating desire. A herd bull that will settle a higher percentage of cows during a limited breeding season is essential to a successful cow-calf operation. In many cow-calf operations, however, the bull's role in the herd's reproductive performance is taken for granted. The bull's fertility is several times more important than that of a cow. Each bull can be expected to settle as many as 30 cows. The bull also contributes half of the genetic potential of the entire calf …

Ec83-130 A 1983 Guide For Herbicide Use In Nebraska, John D. Furrer, Alex Martin, Fred W. Roeth

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 83-130 is a guide for herbicide use in Nebraska.

Ec83-877 Selecting A Computer System For The Farm Business, H. Doug Jose

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 83-877: This circular talks about the best computer systems for farm businesses.

Ec83-1241 Turfgrass Weed Identification And Control ; A Common Sense Approach, Robert C. Shearman, David M. Bishop, Arthur H. Bruneau

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 83-1241: This circular discusses turf grass weed identification and control.

Ec83-872 Revised Estimated Crop And Livestock Production Costs, H. Douglas Jose, Larry L. Bitney, Douglas Duey

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 83-872: Estimated crop and livestock production costs in Nebraska for 1983.

Ec83-1509 Insect Control Guide For Corn And Sorghum In Nebraska, R. E. Roselle, D. L. Keith, L. L. Peters

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 83-1509: Insect control guide for corn and sorghum.

Wpa News 1 (1983), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (January 1983), number 1

Published by the World Pheasant Association

Introduction To The Symposium On Imported Fire Ants, Southeastern Branch, Entomological Society Of America, January 26, 1982, C. S. Lofgren

Entomology Papers from Other Sources

While there have been many exotic insect pests inadvertently introduced into the United States, only a few have had the dramatic impact that the imported fire ants (Solenopsis invicta Buren and S. richteri Forel) have had on the southern states. Certainly this is understandable to anyone who has seen their small child receiving dozens of fiery injections of venom or to a farmer who suddenly realizes that his lush verdant pasture has become the mound construction site for hundreds of colonies of fire ants, each with 100,000 to 200,000 workers who are willing to attack anyone who disturbs their …

G83-678 Producing Milk With A Low Bacteria Count, Stanely E. Wallen, Don J. Kubik, Stephen L. James, Daniel J. Borer, Gerald R. Bodman, E. Denis Erickson, Duane N. Rice, Philip H. Cole, Foster G. Owen

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide provides cleaning, sanitizing, mechanical, environmental and other procedures to follow to assure a low bacterial count in milk. Bacteria are tiny, rapidly reproducing microorganisms that are too small to be seen without a high power microscope. Their very tiny size makes it very difficult to eliminate them from dairy equipment. Because bacterial growth in milk may cause spoilage and possibly human illnesses, a low bacterial count is one of the best indicators of top quality milk. Milk will almost always be of top quality if properly harvested from healthy, clean cows with clean equipment, cooled quickly and kept …

Genetic Groups In Dairy Sire Evaluation Under A Selection Model, T. R. Famula, E. J. Pollak, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

The frequently arbitrary application and definition of genetic groups makes sire grouping the “weak link” of the sire evaluation process. A selection model for records not in the model for observations is similar in form to the genetic groups model. Implications of this correspondence are discussed and illustrated through a small example. Guidelines for possible grouping strategies also are discussed.

Comparison Of Dams' Estimated Transmitting Abilities From First Lactation Herdmates Or All Records Of Herdmates To Predict Sons' Milk Evaluations, L. Dale Van Vleck, P. A. Murphy

Department of Animal Science: Faculty Publications

Multiple regression of genetic evaluations for milk yields of first lactations of 159 Holstein bulls on sire, dam, and maternal grandsire evaluations indicates that the weight for estimated transmitting ability of the dam calculated from the first record of the dam and first records of her herdmates is about as theoretically expected and is markedly superior both to estimated transmitting ability computed from the first record of the dam and all records of her herdmates and to estimated transmitting ability computed from all records of the dam and her herdmates. The latter two procedures gave similar results.

Human Adaptations In The Andes: A Look At Nutrition And Brain Function With Respect To Coca And High Altitude Physiological Adaptations, Barrett P. Brenton

Nebraska Anthropologist

Throughout the span of human evolution the brain has allowed itself to be controlled by nutritional intake. This correlation between nutrition and the brain has led me to believe that the human brain has allowed itself to be manipulated and controlled by an individual's dietary intake in order to successfully adapt to the environment. In looking at the indigenous peoples of the South American Andes, I found surprising parallels between human physiological adaptations to high altitude hypoxia and cold stress and the correlating control of neurotransmitters to the brain by dietary intake.

In a study of this type it becomes …

Manioc And Fish: A "Methiononian" Compromise In Amazonia?, Tom Langdon

Nebraska Anthropologist

Protein as a limiting factor in Amazonian diet has met with considerable discussion and argument (e.g., Beckerman 1979; Chagnon and Hames 1979; Johnson 1982; Gross 1975, 1982; Spath 1978, 1981; Werner et al. 1979). The intent of this paper is to continue the discussion of protein as a limiting factor in Amazonia with respect to two dietary staples, manioc and fish. More specifically, does bitter manioc become a factor in determining aquatic resource utilization in Amazonia?

The Rhetorical Theories Of Malebranche: Persuasion Through Imitation Or Attention?, Thomas M. Carr Jr.

French Language and Literature Papers

France's most prominent philosopher of the second half of the seventeenth century is reputed to be no friend of rhetoric. Bernard Tocanne declares, "C'est chez Malebranche que se mettent en place tous les arguments mis en oeuvre par les adversaires de la rhétorique à la fin du siècle," and Peter France calls him "a philosopher who had no love for rhetoric." The basis of such judgments is the Oratorian's attacks in the Recherche de la vérité (1674) against the use of the imagination and passions in the eloquence of Tertullian, Seneca, and Montaigne. Malebranche's critique is symptomatic of the legacy …

Avian Associations Of The Northern Great Plains Grasslands, Harold A. Kantrud, Russell L. Kologiski

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

The grassland region of the northern Great Plains was divided into six broad subregions by application of an avian indicator species analysis to data obtained from 582 sample plots censused during the breeding season. Common, ubiquitous species and rare species had little classificatory value and were eliminated from the data set used to derive the avian associations. Initial statistical division of the plots likely reflected structure of the dominant plant species used for nesting; later divisions probably were related to foraging or nesting cover requirements based on vegetation height or density, habitat heterogeneity, or possibly to the existence of mutually …

The Relative Contribution To Meaning Of Verbal And Nonverbal Channels Of Communication: A Meta-Analysis, Jeffrey S. Philpott

Department of Communication Studies: Dissertations, Theses, and Student Research

The current study is grounded in the psychological approaches to the mechanics of communication, somewhere between cybernetics and attribution.

The integration of information available in different channels is the focus of the present study. To what extent do people rely on the different channels of communication to assign meaning to their world? More specifically, what is the relative importance of the verbal and nonverbal channels of communication in the meaning creation process?

This question of channel reliance is of central import to the study of the role of information in social/psychological systems. If it can be assumed that meaning is …

Serum Concentrations Of Pituitary And Adrenal Hormones In Female Pigs Exposed To Two Photoperiods, Robert R. Kraeling, George B. Rampacek, John W. Mabry, Fred L. Cunningham, Carl A. Pinkert

United States Department of Agriculture Wildlife Services: Staff Publications

Serum concentrations of pituitary and adrenal hormones were determined in lactating sows and ovariectomized (OVX) gilts exposed to 8 h (8L:16D) or 16 h of light (16L:8D). In addition serum prolactin (PRL) concentrations were determined after a thyrotropin releasing hormone (TRH) challenge. At 103 -+ 2 d of gestation or 3 wk after ovariectomy of nullipai'ous gilts on d 7 to 9 of the estrous cycle (d -10), blood samples were collected from jugular vein cannulae at 30-rain intervals for 8 h beginning at 0800 h. Immediately after the last sample, 13 sows and five OVX gilts were assigned to …

Physiology Of Male Reproduction, R. P. Amann, B. D. Schanbacher

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The major advances over the past 25 yr in male reproductive physiology of cattle, sheep, swine and horses are reviewed. Those findings which have allowed efficient culling of subfertile males and exploitation of the reproductive capacity of genetically superior sires are emphasized.

Hormones secreted by the male gonad early in gestation induce regression of potentially female structures and development of the male reproductive tract. Compartmentalization of the testis and formation of the bloodtestis barrier during prepubertal development permit the steroidogenic and gametogenic activities of the adult testes to proceed normally. The role of the central nervous system, hypothalamus and anterior …

Pulsatile Luteinizing Hormone Secretion In The Castrate Male Bovine: Effects Of Testosterone Or Estradiol Replacement Therapy, B. D. Schanbacher, M. J. D'Occhio, T. W. Gettys

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Luteinizing hormone (LH) secretory profiles have been determined for the male bovine following castration and steroid replacement therapy. Serum LH concentrations increased approximately threefold during the first week following castration and thereafter remained elevated (6.6 ± .7 ng/ml). Castrates not receiving steroid replacement showed a rhythmic pattern of LH release that was of high frequency (mean pulse interval; 85 ± 5 min) and high amplitude (mean peak concentration, 11.2 ± 1.4 ng/ml). Chronic administration of estradiol-17β via subdermal Silastic implants reduced mean serum LH concentrations (2.1 ± .3 ng/ml) and blocked the pulsatile pattern of LH release in all steers. …

Reproductive Effects Of Immunizing Heifers Against Androstenedione And Oestradiol-17Β, T. H. Wise, B. D. Schanbacher

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Heifers were treated with saline (Group I, N = 10), keyhole limpet haemocyanin (KLH ; Group II, N = 10), androstenedione-KLH antigen (Group III, N = 14), or oestradiol-17β-KLH antigen (Group IV, N = 14). Booster injections were given to produce binding of > 10% at dilutions of 1:100 to 1:1000 (50% binding = 14·4pg androstenedione and 9·5pg oestradiol). The heifers were mated and killed at ~46days of gestation to establish ovulation rates, calf numbers, blood hormone relationships and ovarian morphology.

Ovulation rate in animals immunized against androstenedione (Group III) was significantly greater than in the other groups; 4 of the …

Water Conservation Of The Kangaroo Rat, Dipodomys Ordii, W. Sue Fairbanks, David Greegor, Leonard Staudinger, Erik Bitterbaum

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Kangaroo rats (Dipodomys spp.) have long been known for their water-conserving abilities. Dipodomys ordii is the most widely distributed kangaroo rat in the United States and its range extends through many climates. Five D. ordii from the Nebraska Sand Hills were used in this experiment. The results of this study indicate that Dipodomys ordii is not independent of free water, but does have a urine concentrating ability comparable to D. merriami, a desert-dwelling species. The individuals showed variability in their response to water deprivation.

The Harold W. Manter Laboratory A National Resource Center For Parasitology, Mary Hanson Pritchard

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

On its tenth anniversary the Harold W. Manter Laboratory, Division of Parasitology, University of Nebraska State Museum, was designated by the American Society of Parasitologists as one of four National Resource Centers for Parasitology in the United States. Collections include more than 80,000 lots of animal parasites many of which are primary types, more than 40,000 reprints, 250 taxonomic notebooks containing original and emended morphological descriptions of digenetic trematodes, runs of 18 parasitological journals, and books of historical and contemporary interest. Collections are of state, regional, national, and international scope, with special emphasis on marine parasitology. The Laboratory is fulfilling …

Linguistic Competence, John Tienson

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The notion of linguistic competence as a cognitive system that produces knowledge not antecedently present in the mind of the subject, e.g., knowledge of grammatical relations in response to certain stimuli is an important contribution to philosophical understanding of linguistics, and of cognitive psychology in general. This notion has not been as well received as it should have been, in part because of certain false things that have been said about it. In particular, it has been said that a grammar of a language, conceived as a theory of linguistic competence, is an idealization, and that speakers know the …

An Assessment Of The Nebraska City Power Station Impingement Effects Relative To The Fishery Dynamics Of The Missouri River, J. Patrick Rhone, I. Cherko, L. G. Harrow, Allen B. Schlesinger

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Pursuant to National Pollutant Discharge Elimination System (NPDES) Permit No. NE 0111635, the Omaha Public Power District conducted an environmental monitoring program at the Nebraska City station. This study was undertaken to assess the effects of the station's cooling-water intake structure upon the aquatic biota of the Missouri River as required by Section 316(b) of the Federal Water Pollution Control Act. It included a study of fishes impinged on the intake structure's six traveling screens. From 29 May 1979 to 31 May 1982, daily fish impingement sampling occurred at 1200 and 2400 ± 2 hr. One of the traveling screens, …

American Indian Artifacts From The Kansas River, Richard A. Rogers, Larry D. Martin

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

American Indian artifacts recovered from the gravel bars of the Kansas River in northeastern Kansas consist of pot sherds and projectile points. The dating of artifacts on stylistic grounds suggests a relatively continuous archeological record from the Kansas River ranging from the end of the Wisconsin glaciation to the Late Holocene. The remains of Pleistocene and Holocene fauna are abundant on the same gravel bars that yielded the artifacts. The presence of woodland musk oxen and stagmoose indicates that northeastern Kansas was part of the Symbos-Cervalces faunal province during the Wisconsinan. By inference, the Late Wisconsinan human occupants must have …

Trox Hamatus Robinson (Troginae) Using A Canthon (Scarabaeinae) Brood Ball And New Records Of North American Trox (Coleoptera: Scarabaeidae), Brett C. Ratcliffe

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Trox hamatus Robinson was observed feeding on an abandoned Canthon brood ball in southeastern Nebraska. Although some Aphodiinae and Scarabaeinae have been reported feeding on or stealing other scarabaeine dung balls, this represents the first reported observation of this behavior for a member of the Troginae. It is suggested that the brood ball was opportunistically used by the Trox, and the event is rare. In addition, new state records are provided for Trox aequalis Say, T. atrox LeConte, T. laticollis LeConte, and T. tesselatus (LeConte).

Miocene Burrows Of Extinct Bear Dogs: Indication Of Early Denning Behavior Of Large Mammalian Carnivores, Robert M. Hunt Jr., Xue Xiang-Xu, Joshua Kaufman

Department of Earth and Atmospheric Sciences: Faculty Publications

Partial skeletons off our species of extinct carnivores have been found in their dens excavated in the floodplain of an early Miocene ephemeral braided stream at Agate Fossil Beds National Monument, Nebraska. Bear dogs (Carnivora: Amphicyonidae) were the principal occupants; their den dimensions and body size are similar to those of living wolves and hyenas. Discovery of this predator community extends the record of denning behavior of large mammalian carnivores to the early Miocene, 20 million years ago.