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Articles 8671 - 8700 of 9737
Full-Text Articles in Animal Sciences
1980 Treasurer's Report
Nebraska Bird Review
One-page spreadsheet constituting the Nebraska Ornithologists' Union treasurer's report at year end (December 31) of 1980. The grand total is $4,344.48.
Review Of The Island Waterfowl By Milton W. Weller, And The Hawaiian Goose: An Experiment In Conservation By Janet Kear And A. J. Berger, Paul A. Johnsgard
Review Of The Island Waterfowl By Milton W. Weller, And The Hawaiian Goose: An Experiment In Conservation By Janet Kear And A. J. Berger, Paul A. Johnsgard
Paul Johnsgard Collection
Both of these books deal with insular species of waterfowl. The volume by Weller concentrates on the ecological forces that have shaped the compar- ative ecologies and morphologies of some 30 forms of Anatidae that are confined to the islands of the world; the Kear and Berger book deals with the interesting history of the ill-fated Hawaiian goose, or nene, which has at least temporarily been saved from extinction by heroic conservation measures of the Wildfowl Trust and Hawaiian wildlife personnel.
A New Species Of Rhynchomys (Muridae) From The Philippines, Guy G. Musser, Patricia W. Freeman
A New Species Of Rhynchomys (Muridae) From The Philippines, Guy G. Musser, Patricia W. Freeman
University of Nebraska State Museum: Mammalogy Papers
". . . Mr. Whitehead has made a most wonderful and unexpected discovery, that of a new and peculiar Mammal-fauna inhabiting the Luzon highlands, and, so far as is yet known, mostly isolated on a small plateau on the top of Monte Data, in the centre of Northern Luzon, at an altitude of from 7000 to 8000 feet." With this dramatic announcement, Oldfield Thomas (1898:377) introduced to naturalists the spectacular rats found by Whitehead: Crateromys schadenbergi, Carpomys melanurus, C. phaeurus, Batomys granti, Chrotomys whiteheadi, Celaenomys silaceus, and Rhynchomys soricoides. One of the most interesting of these to Thomas was …
Correspondence Of Food Habits And Morphology In Insectivorous Bats, Patricia W. Freeman
Correspondence Of Food Habits And Morphology In Insectivorous Bats, Patricia W. Freeman
University of Nebraska State Museum: Mammalogy Papers
In a morphometric study of molossid bats (Freeman, in press), I found that the first principal component (PC) reflected overall size. The second PC was concerned with a suite of jaw and skull measurements that separated molossids with thicker jaws, fewer but larger teeth, and welldeveloped cranial crests (i.e., bats with robust skulls) from those with thinner jaws, more but smaller teeth, and less developed cranial crests. Subsequently, I found (Freeman, 1979) that molossids with robust skulls ate hard-shelled insects such as beetles. and that molossids with gracile skulls ate soft-bodied insects such as moths. Given these conclusions I was …
Relationship Between Production And Stayability In Holstein Cattle, G. F. S. Hudson, L. Dale Van Vleck
Relationship Between Production And Stayability In Holstein Cattle, G. F. S. Hudson, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
Records from 97,555 first daughters of 1,487 Holstein sires in artificial insemination were used to estimate components of variance and covariance of first lactation milk and fat production and stayability to 36, 48, 60, 72, and 84 mo of age. Henderson's Method 3 was used with a model including fixed herd-year- season and genetic group effects and random sire within group and residual effects. Heritabilities for milk and fat production and 36-, 48-, 60-, 72-, and 84-mo stayability were .31, .30, .02, .04, .05, .05, and .05. Genetic and phenotypic correlations between milk production and stayability ranged from .47 to …
Observations On Bats From Trinidad, With A Checklist Of Species Occurring On The Island, Catherine H. Carter, Hugh H. Genoways, Robert S. Loregnard, Robert J. Baker
Observations On Bats From Trinidad, With A Checklist Of Species Occurring On The Island, Catherine H. Carter, Hugh H. Genoways, Robert S. Loregnard, Robert J. Baker
University of Nebraska State Museum: Mammalogy Papers
In their comprehensive treatment of the bats of Trinidad, Goodwin and Greenhall (1961) reported 58 species from the island. Subsequent authors (Goodwin and Greenhall, 1962, 1964; Genoways et al., 1973a; LaVal, 1973a, 1973b) have added some species to the list and changed the status of others so that the known chiropteran fauna of Trinidad now comprises 64 species: five emballonurids, one noctilionid, four mormoopids, 36 phyllostomids (see Handley, 1980, for family-group names), one natalid, one furipterid, one thyropterid, seven vespertilionids, and eight molossids. Among the phyllostomids, the subfamilies Phyllostominae (15) and Stenodermatinae (14) are the best represented, whereas only a …
Streptococcal Infections Of Fishes, G. L. Bullock
Streptococcal Infections Of Fishes, G. L. Bullock
United States Fish and Wildlife Service: Publications
Streptococcosis is a septicemic disease that affects both freshwater and saltwater fishes; it was first reported in rainbow trout, Salmo gairdneri (Hoshino et al. 1958). Additional outbreaks have since been described in cultured golden shiners (Notemigonus crysoleucas), yellowtails (Sepiola quinqueradiata), and eels (Anguilla japonious) , and in a variety of feral saltwater fishes.
Bacterial Gill Disease Of Freshwater Fishes, S. F. Snieszko
Bacterial Gill Disease Of Freshwater Fishes, S. F. Snieszko
United States Fish and Wildlife Service: Publications
Bacterial gill disease (BGD) was first described by Davis (1926, 1927), who observed it in fry and fingerling brook trout (Salvelinus fontinalis) and rainbow trout (Salmo gairdneri) in hatcheries in Vermont. The affected trout were kept in dirt-bottom ponds and were not crowded; , daily mortalities were very low. Mortalities rapidly increased when the water temperature increased and diminished when the temperature decreased. Examination of the diseased trout revealed clubbing of gill filaments. In microscopic examination of wet mounts of the filaments" Davis found that the gill surface was covered with closely adhering strands of long, …
Bibliographie Pflanzensoziologischer Arbeiten Über Die Mongolische Volksrepublik, Werner Hilbig
Bibliographie Pflanzensoziologischer Arbeiten Über Die Mongolische Volksrepublik, Werner Hilbig
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Zusammenfassung
Die Bibliographie enthält pflanzensoziologische und vegetationsökologische Veröffentlichungen aus dem Gebiet der Mongolischen Volksrepublik (MVR) von den zwanziger Jahren bis zum Jahre 1979. Es werden 217 Arbeiten zitiert. Der Großteil dieser Publikationen stammt aus der Feder sowjetischer Geobotaniker,
Tornadoes West Of The Divide: A Climatology, Richard P. Mcnulty
Tornadoes West Of The Divide: A Climatology, Richard P. Mcnulty
National Oceanographic and Atmospheric Administration: Technical Reports and Related Materials
A climatology of tornado occurrence west of the Continental Divide is presented. These tornadoes are a small but significant part of severe weather occurrences over the United States. Data are examined from both the spatial and temporal point of view. The influence of population and topography is highly evident.
Block And Bridle Annual, 1981
Block and Bridle Annual (1933–2021)
Table of Contents:
Purpose and Emblem
Animal Science Dept. Chairman Address
Block and Bridle Presidents’ Address
Portrait Presentation Honoree
Visit with the Honoree
Senior Scholarship Award
Junior Scholarship Award
Animal Science Faculty
Animal Science Graduate Students
Animal Science Secretaries
Block and Bridle Advisors
Block and Bridle Officers
Block & Bridle Executive Committee
Block & Bridle Members
Block & Bridle Initiates
Liaison Committeee
Block & Bridle Seniors
Activities and Program Calendar
National Awards
New Activities
Honors Banquet
Summer & Regional Meetings
State Fair Beef Carcass Contest Award
Fall Steak Fry
Little Ak-Sar-Ben
Queen Candidates
Queen Coronation & Alumni Dance
Kid’s Day …
Sire Evaluation By Only Extended Partial Milk And Fat Records, T. R. Famula, L. Dale Van Vleck
Sire Evaluation By Only Extended Partial Milk And Fat Records, T. R. Famula, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
The standard of comparison for dairy production records is the 305-day lactation, and much research has been directed to estimating 305-day milk and fat records from incomplete or in-progress records. This study was to determine the effect of several methods of extending incomplete records on sire evaluation. Complete 305-day milk and fat records of first lactations of 73,724 daughters of 1,362 artificial insemination Holstein sires processed at the New York Dairy Records Processing Laboratory were used to compute sire proofs for yield of milk and fat. Partial records of two lengths (60 to 80 days and 130 to 160 days) …
Review Of Observations Of Wildlife, Paul A. Johnsgard
Review Of Observations Of Wildlife, Paul A. Johnsgard
Papers in Ornithology
Nearly everybody has a childhood hero, but only rarely do those heros survive the test of time to stand even taller in the mind's eye when approaching a halfcentury of one's own lifetime. Sir Peter Scott is a man of such stuff; his enormous artistic abilities and capacity for converting those talents into the environmental education of several generations of Britons, and toward the conservation of the earth's natural resources, cause him to stand uniquely alone in the international environmental scene. His book is an informal retrospective look at his own life, his artwork, and his concerns for conservation and …
Vorwort, Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik (1981) Band 1, Rudolf Schubert
Vorwort, Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik (1981) Band 1, Rudolf Schubert
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
First paragraph:
Seit 1967 besteht ein Freundschaftsvertrag zwischen der Staatsuniversität Ulan-Bator und der Martin-Luther-Universität Halle-Wittenberg, innerhalb dessen auch eine Zusammenarbeit auf dem Gebiet der Biowissenschaften ausgewiesen ist. Die gemeinsame Lösung von biologischen Forschungsproblemen stellt ein Kernstück der Freundschaftsbeziehungen zwischen beiden Universitäten dar. Es geht dabei vorwiegend um die Klärung ökologischer Fragen.
Stand Und Entwicklung Der Erforschung Der Flechten- Und Moosflora In Der Mongolischen Volksrepublik, Rudolf Schubert
Stand Und Entwicklung Der Erforschung Der Flechten- Und Moosflora In Der Mongolischen Volksrepublik, Rudolf Schubert
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In Zusammenarbeit von sowjetischcn und mongolischen Bryologen werden gegenwärtig die in Leningrad befindlichen Aufsammlungen bearbeitet. Ergebnisse darüber sind in der Arbeit von ABRAMOVA und TSEGMED (1975) veröffentlicht. Ein umfangreicherer Beitrag zur Bryof1ora konnte durch die Bearbeitung der von W. SCHUBERT gesammelten 464 Moosproben aus den zentralen und westlichen Landschaften der MVR erbracht werden, Von R. SCHUBERT, W. SCHUBERT, und KOPERSKI wurden 1977 12 Leber- und 88 Laubmoosarten für diese Gebiete nachgewiesen. Weitere Nachweise stellen GROLLE, MEINUNGER, HILBIG und HUNECK (i. Dr.) zusammen. Es muß aber auch hier betont werden, daß damit nur ein erster Anfang zur Erforschung der Moosflora der …
Der Stand Der Hydrobiologischen Forschungen In Der Mongolischen Volksrepublik, Ayuur Dulmaa
Der Stand Der Hydrobiologischen Forschungen In Der Mongolischen Volksrepublik, Ayuur Dulmaa
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Die Entwicklung der Hydrobiologie in der MVR vollzog sich unter ständiger Orientierung an den volkswirtschaftlichen Interessen des Landes. Deshalb wurde neben grundlegenden Forschungen zu Fauna und Ökologie der Gewässer besonderes Gewicht auf die Akklimutisierung von Nutzfischen gelegt. Die dazu notwendigen Kenntnisse der hydrobiologisch bisher weitgehend unerforschten Seen der Mongolei erbrachten mehrjährige Expeditionen in verschiedenen Gebieten des Landes. Den gemeinsamen Biologischen Chövsgöl-Expeditionen der Universitäten Irkutsk und Ulan-Balor kommt dabei eine besondere Rolle zu. Am See Chövsgöl entstand auch die erste hydrobiologische Station der MVR. Die rasche Entfaltung der Hydrobiologie in den letzten zwanzig Jahren dokumentiert eine Reihe bedeutender wissenschaftlicher Publikationen ebenso …
Spezialistenverzeichnis Für Die Bearbeitung Der Arthropodenfauna Der Mvr, Manfred Dorn, Michael Stubbe
Spezialistenverzeichnis Für Die Bearbeitung Der Arthropodenfauna Der Mvr, Manfred Dorn, Michael Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Seit mehr als 20 Jahren führen Biologen der Staatlichen Mongolischen Universität Ulan-Bator und von Akademie-Instituten der Mongolischen Volksrepublik gemeinsam mit Zoologen und Botanikern befreundeter wissenschaftlicher Partnereinrichtungen insbesondere der DDR, der UdSSR, der CSSR sowie der Volksrepublik Ungarn in großem Umfang Expeditionen zur Erforschung der biologischen Ressourcen der MVR durch. Im Rahmen dieser Expeditionen wurde unter anderem ein umfangreiches Arthropodenmaterial gesammelt, dessen Bearbeitung einen wesentlichen Beitrag zur Erschließung der mongolischen Entomofauna darstellt. Von besonderer Bedeutung sind die Veröffentlichungen in der bereits auf 7 Bände angewachsenen Publikationsreihe "Nasekomye Mongolii" (Leningrad), die Ergebnisse der Expeditionen von Dr. Z. KASZAB (Budapest) sowie jene der …
Die Entwicklung Der Lehrstühle Für Zoologie Und Botanik An Der Mongolischen Staatsuniversität Ulan-Bator, Naniragijn Dawaa, Zedengijn Schamsran
Die Entwicklung Der Lehrstühle Für Zoologie Und Botanik An Der Mongolischen Staatsuniversität Ulan-Bator, Naniragijn Dawaa, Zedengijn Schamsran
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Describes the history of the Zoology and Botany Departments in the National University of Mongolia before 1981.
Die Entwicklung Der Zasammenarbeit Auf Biologischem Gebiet Zwischen Der Mvr Und Ddr Seit 1962, Michael Stubbe, Naniragijn Dawaa, Werner Hilbig, Zedengijn Schamsran
Die Entwicklung Der Zasammenarbeit Auf Biologischem Gebiet Zwischen Der Mvr Und Ddr Seit 1962, Michael Stubbe, Naniragijn Dawaa, Werner Hilbig, Zedengijn Schamsran
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Mit zwei großen komplexen biologischen Sammelexpeditionen 1962 und 1964 der Akademien der Wissenschaften der DDR und MVR in die Süd- und Westmongolei wurde der Grundstein für die kontinuierliche Entwicklung der Wissenschaftskooperation auf biologischem Gebiet zwischen beiden Staaten gelegt. Die Kollektionen wurden zum Grundstock eines aufzubauenden botanischen und zoologischen Sammlungsfundus in Ulan-Bator. Durch den Freundschaftsvertrag zwischen den Universitäiten Halle und Ulan-Bator im Jahre 1967 wurden die Kontakte neu aktiviert. Nach anfänglich sporadischen Studienaufenthalten und Expeditionsreisen von Einzelwissenschaftlern wurde das Forschungsprogramm auf biologischem Gebiet im Rahmen dieses Freundschaftsvertrages recht bald auf Schwerpunktaufgaben ausgerichtet, die sich lückenlos in das Forschungsprofil des mongolischen Vertragspartners …
Die Erforschung Der Herpetofauna Der Mongolischen Volksrepublik: Situation Und Perspektiven, Günther Peters
Die Erforschung Der Herpetofauna Der Mongolischen Volksrepublik: Situation Und Perspektiven, Günther Peters
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
First paragraph:
Die Landschaften der Mongolei sind arm an Reptilien- und Amphibienarten. Dieser Umstand mag die Frage aufwerfen, ob herpetologische Untersuchungen in Beschränkung auf das Territorium der MVR eine nennenswerte Perspektive haben könnten, nachdem Artenspektrum und Verbteitung der Species annähernd vollständig erkundet sind. Ein Herpetologe wird zweifellos für seine Arbeit auch in diesem Land eine Zukunft sehen, doch muß wohl von vornherein eingestanden werden, daß das Volumen der Probleme dieses Faches hinter denen der übrigen Disziplinen der Vertebratenzoologie und der Entomologie in einem bescheidenerem Rahmen verbleibt. Dies gilt sowohl im rein wissenschaftlichen als erst recht auch im angewandten Bereich ihrer …
Abkommen Über Freundschaft Und Zusammenarbeit Zwischen Der Martin-Luther-Universität Halle-Wittenberg Und Der Mongolischen Staatlichen Universität Ulan-Bator--Entwicklung Und Ausblick, J. Schuh, D. Batsuur
Abkommen Über Freundschaft Und Zusammenarbeit Zwischen Der Martin-Luther-Universität Halle-Wittenberg Und Der Mongolischen Staatlichen Universität Ulan-Bator--Entwicklung Und Ausblick, J. Schuh, D. Batsuur
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
First paragraph:
Wenn die Mongolische Staatliche Universität Ulan-Bator ihrem 40. Gründungstag entgegengeht, der folgerichtig in dem revolutionären Aufbruch aus einer alten Geschichte des mongolischen Volkes in eine sozialistische Gessellschaft begründet liegt, so treffen sich seit über einem Jahrzehnt in diesem wissenschaftshistorischen Zeitraum auch Wissenschaftler und Studenten der Martin-Luther-Universität Halle-Wittenberg mit ihren mongolischen Kollegen und Freunden der Mongolischen Staatlichen Universität Ulan-Bator zu geistiger Begegnung und gemeinsamer wissenschaftlicher Arbeit. Sie entspringt den gleichen Zielen einer sozialistischen Gesellschaft, Bildung, Kultur und Wissenschaft zur allseitigen Entwicklung der Persönlichkeit, zur stetigen Verbesserung des Volkswohlstandes, für Völkerverständigung und sozial-historischen Fortschritt zu entfalten.
Effect Of Level Of Dietary Calcium-Phosphorus During Growth And Gestation On Calcium-Phosphorus Balance And Reproductive Performance Of First-Litter Sows, R. D. Nimmo, E. R. Peo, Jr., J. D. Crenshaw, B. D. Moser, A. J. Lewis
Effect Of Level Of Dietary Calcium-Phosphorus During Growth And Gestation On Calcium-Phosphorus Balance And Reproductive Performance Of First-Litter Sows, R. D. Nimmo, E. R. Peo, Jr., J. D. Crenshaw, B. D. Moser, A. J. Lewis
Department of Animal Science: Faculty Publications
Twenty-four bred gilts were used in a Ca-P metabolism trial. Twelve gilts were fed gestation treatment A (13 g Ca, 10 g/day), while the other 12 were fed gestation treatment B (19.5 g Ca, 15 g P/day). One-half of the gilts in each treatment group were fed .65% Ca, .50% P from 7 to 94 kg, and half were fed .975% Ca, .75% P for the same period. Treatment B gilts excreted more (P<.005) fecal and urinary P. Twenty-four first litter sows fed the same treatment diets during growth and gestation and given .75% Ca, .50% P during lactation were used in a Ca and P balance trial conducted from day 38 to 42 of lactation.
Influence Of Age, Sex, And Calcium And Phosphorus Levels On The Mechanical Properties Of Various Bones In Swine, T. D. Crenshaw, E. R. Peo, Jr., A. J. Lewis, B. D. Moser, D. Olson
Influence Of Age, Sex, And Calcium And Phosphorus Levels On The Mechanical Properties Of Various Bones In Swine, T. D. Crenshaw, E. R. Peo, Jr., A. J. Lewis, B. D. Moser, D. Olson
Department of Animal Science: Faculty Publications
Seventy-two 4-week-old pigs were randomly assigned by sex (gilts, barrows, boars) to two dietary treatments and four age periods for determinations of the effects of age, sex and Ca and P levels on the mechanical properties of various bones in swine.
Comparisons Of Mating Systems With Duroc, Hampshire And Yorkshire Breeds Of Swine For Efficiency Of Swine Production, E. R. Wilson, R. K. Johnson
Comparisons Of Mating Systems With Duroc, Hampshire And Yorkshire Breeds Of Swine For Efficiency Of Swine Production, E. R. Wilson, R. K. Johnson
Department of Animal Science: Faculty Publications
Estimates of direct and maternal genetic and heterosis effects for purebreds and crosses among the Duroc, Hampshire and Yorkshire breeds were made from data on 1,243 litters from the Oklahoma crossbreeding experiment. The estimates were used to simulate the production efficiency of 21 mating systems. Each mating system was defined to include purebred, crossbred and commercial matings needed to maintain 10,000 farrowings. Linear programming was used to maximize the number of Yorkshire equivalent pigs foreach system. An index of economic weights for days to 100 kg, feed efficiency and probe backfat (traits expressed as a deviation from Yorkshire) was calculated …
Comparison Of Three-Breed And Backcross Swine For Litter Productivity And Postweaning Performance , E. R. Wilson, R. K. Johnson
Comparison Of Three-Breed And Backcross Swine For Litter Productivity And Postweaning Performance , E. R. Wilson, R. K. Johnson
Department of Animal Science: Faculty Publications
Duroc, Hampshire and Yorkshire boars were mated with crossbred gilts of Duroc-Hampshire, Duroc-Yorkshire and Hampshire-Yorkshire breeding to produce 133 three-breed and 259 backcross litters that were farrowed during four seasons beginning in the fall of 1975. Threebreed cross litters were .31 ± .27, .57 ± .24 and .50 ± .24 pigs larger than backcross litters at birth, 21 and 42 days, respectively, and .6 ± .34, 2.3 ± 1.2 and 5.4 ± 2.4 kg heavier at these ages. The differences in average pig weight and survival percentage were small. Three-breed cross litters gained faster (.024 ± .007 kg/day) and were …
Bone Strength As A Trait For Assesing Mineralization In Swine: A Critical Review Of Techniques Involved, T. D. Crenshaw, E. R. Peo, Jr., A. J. Lewis, B. D. Moser
Bone Strength As A Trait For Assesing Mineralization In Swine: A Critical Review Of Techniques Involved, T. D. Crenshaw, E. R. Peo, Jr., A. J. Lewis, B. D. Moser
Department of Animal Science: Faculty Publications
Lack of standardized test procedures has resulted in considerable variation in reported values for bone strength. Such variation can be attributed in part to the type of instruments used to determine physical properties of bone, procedures used to prepare the bones for testing and equations used to calculate strength. If bone strength is to be used as a major criterion of response in mineral nutrition research, standardization of procedures for measuring and reporting bone strength is essential. Traits that describe the mechanical properties of bone as determined in the commonly used flexure test in which force is applied perpendicularly to …
Effect Of Level Of Dietary Calcium-Phosphorus During Growth And Gestation On Performance, Blood And Bone Parameters Of Swine, R. D. Nimmo, E. R. Peo, Jr., B. D. Moser, A. J. Lewis
Effect Of Level Of Dietary Calcium-Phosphorus During Growth And Gestation On Performance, Blood And Bone Parameters Of Swine, R. D. Nimmo, E. R. Peo, Jr., B. D. Moser, A. J. Lewis
Department of Animal Science: Faculty Publications
One-hundred and ninety-two crossbred weanling gilts (7.25 kg) were assigned to one of two treatments - (A) .65% Ca, .50% P or (B) .975% Ca, .75% P - and fed to an average weight of 92.8 kilograms. Average daily gain (.65 and .67 kg, respectively) and feed/gain were not affected by dietary treatment, but average daily feed intake was lower (P<.05) for gilts on treatment A (1.87 vs 1.95 kg).
Measures Of Racetrack Performance With Regard To Breeding Evaluation Of Trotters, M. J. Ojala, L. Dale Van Vleck
Measures Of Racetrack Performance With Regard To Breeding Evaluation Of Trotters, M. J. Ojala, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
Trotting records on the Finnish Horse were divided into two subsets: the total data set, with 13,000 race records on 554 horses by 206 sires, and the summary data set, with 1,378 records summarized annually for each horse. The purpose of the study was to determine whether these data could be utilized in a simple, yet useful way for the assessment of breeding value. A total of 24 measures of performance based on time at finish, money won and rank at finish were studied in the summary data set. The total data set included four traits compiled from records made …
Components Of Variance For Milk And Fat Yields In Dairy Goats, M. U. Iloeje, L. Dale Van Vleck, G. R. Wiggans
Components Of Variance For Milk And Fat Yields In Dairy Goats, M. U. Iloeje, L. Dale Van Vleck, G. R. Wiggans
Department of Animal Science: Faculty Publications
Age-season adjusted records from five breeds of dairy goats on Dairy Herd Improvement test from 1965 to 1976 were used to estimate components of variance for milk yield, fat yield, and fat percentage. The data were 6,452 Alpine, 1,730 LaMancha, 6,897 Nubian, 2,759 Saanen, and 4,007 Toggenberg lactation records. Components of variance were estimated by Henderson's Method 1 with a four-way model that included random effects of herd, year-season, sire, and doe. Herd effects accounted for 22 to 31% of the total variation in milk and fat yields and 15 to 25% of the variation in fat percentage. These effects …
Lavender, A Chick Melanocyte Mutant With Defective Melanosome Translocation: A Possible Role For 10 Nm Filaments And Microfilaments But Not Microtubules, Paula Mayerson, John Brumbaugh
Lavender, A Chick Melanocyte Mutant With Defective Melanosome Translocation: A Possible Role For 10 Nm Filaments And Microfilaments But Not Microtubules, Paula Mayerson, John Brumbaugh
School of Biological Sciences: Faculty Publications
Lavender is a mutation of chick neural-crest-derived melanocytes showing dilute feather pigmentation. This defect, previously attributed to a lack or attenuation of dendrites, was found to be due to a defect in melanosome translocation. The mutant phenotype, of melanin-congested perikarya and pigmentless dendrites is expressed both in vivo and in vitro. Studies with colcemid and cytochalasin B suggest that the avian melanocyte resembles a dispersing amphibian melanophore in its requirement for microfilaments but not microtubules.
Ultrastructural analysis revealed a normal complement of intracellular filaments. Microtubules, however, are scarce. Intermediate (10 nm) filaments surround and are closely associated with intracellular organelles, …