Animal Sciences Commons^™

Wolf-Pack Buffer Zones As Prey Reservoirs, L. David Mech

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

Abstract. In a declining herd, surviving deer inhabited overlapping edges of wolf- pack territories. There, wolves hunted little until desperate, in order to avoid fatal encounters with neighbors. Such encounters reduce wolf numbers and predation pressure and apparently allow surviving deer along territory edges to repopulate the area through dispersal of their prime, less vulnerable offspring into territory cores.

Whole Issue Nebraska Bird Review (September 1977) 45(3)

Nebraska Bird Review

TABLE OF CONTENTS

1977 (Fifty-second) Spring Migration and Occurrence Report .............................34

Poor-wills in Lancaster and Saunders Counties............................42

The Swanskin ............................................. 45

Book Reviews .................................................................. 50

Notes ......................................................................... 51

Comparison Of Coyote And Coyote × Dog Hybrid Food Habits In Southeastern Nebraska, Brian R. Mahan

University of Nebraska State Museum: Mammalogy Papers

The recent taxonomic study by Mahan et al. (1978) documented the occurrence of coyote (Canis latrans) x dog (c. familiaris) hybrids in Nebraska. This study, and those by Freeman (1976) in Oklahoma and Gipson et al. (1974) in Arkansas show coyote x dog hybrids, though not abundant, to be numerous in some areas. The purpose of the present study was to compare the stomach contents of coyote x dog hybrids collected by Mahan et al. (1978) from southeastern Nebraska with those of contemporary coyotes.

Stomachs of 12 coyote x dog hybrids and 16 coyotes collected November 1975 …

Aboriginal Exploitation Of Marine Food Resources, Alan J. Osborn

Department of Anthropology: Theses and Student Research

Anthropological interest in human exploitation of resources has increased considerably during the last decade. Archaeological and ethnological literature concerning man's utilization of the world's oceans is relatively abundant and there are now several on-going anthropological research programs, e.g., Aleutian Islands, Pacific Northwest Coast, California, Hawaii, Australia, New Zealand, Peru, Ecuador, Chile, and Southern Africa which focus primarily on maritime adaptations. The purpose of this study is threefold: (1) to suggest that anthropological assumptions regarding marine food resources and their use are inadequate; (2) to examine marine ecosystems with respect to structure and dynamics, primary productivity, ecological efficiencies, distributional and quantitative …

Age-Season Adjustment Factors Considering Herd Feeding Practices, G. R. Wiggans, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

The influence of percent of net energy in the herd's ration derived from concentrates on age-season effects was studied in New York Holstein Dairy Herd Improvement records. Ten feeding groups were defined by herd-feeding information. There was some increase in milk yield with an increasing proportion of concentrates in the ration. For six of these groups, the two highest, two middle, and two lowest in percent net energy from concentrates, age-season effects were calculated. The trends in age effects and seasonal effects were similar for all groups with the groups having a higher fraction of net energy from concentrates showing …

Whole Issue Nebraska Bird Review (June 1977) 45(2)

Nebraska Bird Review

TABLE OF CONTENTS

Great-tailed Grackles Nesting in Nebraska ......................................... 18

1976 (Nineteenth) Fall Occurrence Report ......................................... 18

The Seventy-sixth Annual Meeting ................................................ 30

Book Reviews .......................................................... 31

Note ....................................32

Interpolation For Extension Factors, G. R. Wiggans, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

A complete table of extension factors for all lengths of part records can be approximated closely from a much smaller table of reciprocals of the factors. The procedure is to use linear interpolation on the reciprocals from the small table. The required extension factor is the reciprocal of the result of interpolation. This procedure is more accurate than interpolation on the factors themselves since the reciprocals are more nearly linearly related to length of part record than are the extension factors themselves.

Memorial: Marvel L. Baker

Department of Animal Science: Faculty Publications

Marvel L. Baker, Professor Emeritus of Animal Science and Dean Emeritus of the College of Agriculture, University of Nebraska-Lincoln died April 20, 1977 after being in poor health for several months.

An Analysis Of The Dependency Structure Between A Gilt's Prebreeding And Reproductive Traits. I. Phenotypic And Genetic Correlations, L. D. Young, R. K. Johnson, I. T. Omtvedt

Department of Animal Science: Faculty Publications

This study involved the records of 339 purebred Duroc, Hampshire and Yorkshire gilts and 192 two-breed cross gilts resulting from matings among the three breeds. The primary purpose of this paper was to investigate the relationship of prebreeding traits, including the growth of the gilt and her littermates, with subsequent measures of reproduction. Heritabilities were estimated for several traits and in general the estimates were somewhat higher than most estimates in the literature. Genetically, all measures of growth were favorably and moderately to highly correlated to ovulation rate, with the relationship being stronger for traits measured late in growth as …

An Analysis Of The Dependency Structure Between A Gilt's Prebreeding And Reproductive Traits. Ii. Principal Component Analysis, L. D. Young, R. K. Johnson, I. T. Omtvedt

Department of Animal Science: Faculty Publications

Seventeen variables measured before breeding and three measures of reproduction were taken on 339 purebred Duroc, Hampshire and Yorkshire gilts and 192 two-breed cross gilts resulting from matings among these breeds. Eight principal components accounted for 90% of the dependency structure existing among the 17 traits measured before breeding. Two principal components accounted for 97% of the dependency structure existing among the three reproductive traits.

The first principal component (PCll) from the prebreeding traits was a general measure of growth ability and accounted for 28% of the variation in the 17 measurements. The second principal component (PC12) contrasted slow growing …

Whole Issue Nebraska Bird Review (March 1977) 45(1)

Nebraska Bird Review

Table of Contents

1976 Treasurers Report ...................2

1976 Nebraska Nesting Survey ...................3

Wild Turkeys in the Fontenelle Forest Area ...................6

1976 Christmas Count ...................7

A Groove-billed Ani and other Birds in Cuming and Doge Counties ...................13

Book Reviews ...................14

Notes ...................15

Vibriosis In Fish, G. L. Bullock

United States Fish and Wildlife Service: Publications

Fish vibriosis is a systemic disease of marine, estuarine, and some freshwater fishes, caused by bacteria of the genus Vibrio (Ross et al. 1968, Ghittino et al. 1972). The disease has been known for centuries; outbreaks along the Italian coast were recorded as early as the 1500's. Terms such as "red pest," "red boil," "red plague," or "saltwater furunculosis" have been applied to vibrio infections, but vibriosis is a more specific term and is now used by most fishery workers. With the rapid development of mariculture, vibriosis has become a major cause of fish loss--sometimes to the extent of being …

Upland Nesting Of American Bitterns, Marsh Hawks, And Short-Eared Owls, Harold F. Duebbert, John T. Lokemoen

United States Fish and Wildlife Service: Publications

Nests of American Bitterns (Botaurus lentiginosus), marsh hawks (Circus cyaneus), and short-eared owls (Asio flammeus) are usually found in wetland habitats. Although large marshes containing dense stands of bulrushes (Scirpus), cattails (Typha), or other wetland vegetation are favored nesting cover, these birds have also been reported to nest in stands of tall, dense shrubs and grasses on the upland (Bent 1961, 1963; Palmer 1962; Sealy 1967; Stewart 1975). During 1968-74, we regularly found upland nests of these three species while conducting duck nesting studies in planted fields of undisturbed grass-legume …

Inventory Of Wetland Habitat Usig Remote Sensing For The Proposed Oahe Irrigation Unit In Eastern South Dakota, Robert G. Best, Donald G. Moore

United States Fish and Wildlife Service: Publications

An inventory of wetlands for the area included in the proposed Oahe Irrigation Project was conducted to provide supplemental data for the wildlife mitigation plan. This report including the data summaries follows a report which documented the interpretation techniques as presented by Best, Moore, and Brewster for inventoryinq small, predominantly Type I wetlands in the low-relief terrain of the Lake Dakota Plain. Wetland habitat in over 310,000 acres in the Oahe irrigation district was inventoried. There were 5305 wetlands representing 7530 acres, 589 acres of natural drains, and 1545 acres of stream habitat in the area. The data were stored …

Nesting By Ferruginous Hawks And Other Raptors On High Voltage Powerline Towers, David S. Gilmer, John M. Wiehe

United States Fish and Wildlife Service: Publications

High voltage powerlines form a spider-web pattern across North Dakota as they radiate outward from electric generating sources at Garrison Dam and nearby lignite-fired power plants. In 1976 there were approximately 1100 miles of high voltage powerline in the state, which required approximately 4500 large steel or aluminum towers for support (G. R. Anderson, personal communication). Moreover, officials of power cooperatives and privately-owned utilities anticipate the construction of over 900 additional miles of high voltage lines by 1981. As North Dakota coal resources are developed the powerline network will probably continue to grow.

Our interest in powerlines was stimulated several …

Argulus, A Branchiuran Parasite Of Freshwater Fishes, G. L. Hoffman

United States Fish and Wildlife Service: Publications

"Fish lice" of the genus Argulus (suborder Branchiura) are Common parasites of freshwater fish, and may occur on frogs and salamanders. Argulids often cause severe mortality of fish in farm ponds, and sometimes in natural waters. Because information on life cycles, ecology, and host specificity is incomplete only a generalized account can be given.

Spring Viremia Of Carp, Winfried Ahne, Ken Wolf

United States Fish and Wildlife Service: Publications

Dating back nearly SO years and possibly even to the Middle Ages, European pond culture of carp (Cyprinus carpio) and perhaps other cyprinid fishes has been plagued with a contagious disease of great importance. Variously known as infectious dropsy, infectious ascites, hemorrhagic septicemia, or rubella, the disease is probably the most serious cause of losses among these fishes; nearly sao reports have been published on the subject.

Block And Bridle Annual, 1977

Block and Bridle Annual (1933–2021)

Table of Contents:

Emblem and Purpose
Dedication
Commemoration
Ani. Sci. Dep’t Chairman Address
B & B President Address
Animal Science Faculty
U of N Ani. Sci. Graduate Students
Block and Bridle Officers
Block and Bridle Executive Committee
Block and Bridle Advisors
Block and Bridle Initiates
Block and Bridle Members
Liaison Committee
Block and Bridle Seniors
Honor’s Banquet
Portrait Presentation
Senior Merit Award
Junior Scholarship Award
Activities and Program Calendar
Summer Meeting
State Fair Presentations
Fall Steak Fry
Kid’s Day
Little Ak-Sar-Ben
Queen Coronation and Alumni Dance
Meats Judging Contest
Ham and Sticker Sales
Christmas Coffee
Regional Meeting
Meat Animal Evaluation …

Expected Phenotypic Response In Weaning Weight Of Beef Calves From Selection For Direct And Maternal Genetic Effects, L. Dale Van Vleck, David St. Louis, J. I. Miller

Department of Animal Science: Faculty Publications

An equation is derived to predict expected phenotypic response to selection when the trait under selection is influenced by both direct and maternal genetic effects. The expected phenotypic response after the i+lth generation of selection is Pi+1 = (i+l){Delta}D + i{Delta}M + {Delta}MC where {Delta}D and {Delta}M are the averages of the genetic selection differentials of the parents for the direct and maternal effects and {Delta}MC is the maternal genetic selection differential for selected females. An example, corresponding to published reports of genetic variances and covariance for direct and maternal effects on weaning weight, illustrates the importance of the covariance …

Visual Detection Of Cryptic Prey By Blue Jays (Cyanocitta Cristata), Alexandra T. Pietrewicz, Alan Kamil

Avian Cognition Papers

Blue jays learned to respond differentially to the presence or absence of Catocala moths in slides. This detection of the moths by the jays was affected by the background upon which the moth was placed and its body orientation, thus providing an objective measure of crypticity. These procedures are useful for the study of visual detection of prey.

Ak-Sar-Ben Beef Seminar Ill, Knights Of Ak-Sar-Ben

University of Nebraska Historical Extension: Bulletin

Opening Remarks - Mr. Robert G. Volk

"Objectives of 4-H" - Dr. William E. Caldwell

Moderator's Remarks - Dr. Frank H. Baker

"Carcass Characteristics of Various Breed Crosses" — Dr. Robert Koch

Production Committee Report - Mr. Chuck Schroeder

Judges Committee Report - Dr. Miles McKee

Marketing and Distribution Report - Mr. Carl Gardner

Education Committee Report - Dr. Joe Hughes

Summary of Ak-Sar-Ben Beef Seminar III - Moderator

News Release on Ak-Sar-Ben Beef Seminar III

Channel Catfish Virus Disease, John A. Plumb

United States Fish and Wildlife Service: Publications

Channel catfish virus disease (CCVD) is an acute infection of cultured fry and fingerling channel catfish (Ictalurus punctatus). The causative agent is the channel catfish virus (CCV) , a member of the herpesvirus group. Since its first identification (Fijan 1968) the virus has been isolated from infected fish collected during epizootics at catfish hatcheries in the warmer latitudes of the United States. The disease is found primarily during the summer and, with a single known exception to date, in fish less than 4 months old. The virus has been isolated only from fish taken while an epizootic was …

Yellow-Crowned Night Herons Sighted In North Dakota, Dennis G. Jorde, Gary L. Krapu, Robert K. Green

United States Fish and Wildlife Service: Publications

Yellow-crowned night herons (Nyctanassa violacea) sighted at four locations in North Dakota during 1976 appear to be the first observations of this species for the State. We sighted a single individual about 8 km south of Medina, North Dakota in western Stutsman County during several visits in June and July 1976. The bird was first seen on 23 June standing in a pasture adjoining an 8.5 ha semi-permanent marsh. On following visits, the heron usually was seen perched in trees at the edge of the wetland. A single yellow-crowned night heron was sighted on the same wetland on …

A New Host For Pleistophora Ovariae (Microsporida), Glenn L. Hoffman, Mary L. Nagel

United States Fish and Wildlife Service: Publications

Pleistophora ovariae, a microsporidan parasite that infects ovaries of the golden shiner (Notemigonus crysoleucas), is a widespread problem for minnow culturists. It occurred in shiners held at 45 of 49 commercial fish farms inspected by Summerfelt and Warner (1970, Journal of Wildlife Diseases 6: 457-465). This microsporidan causes considerable damage to golden shiner ovaries, reducing fecundity, but most fish farmers obtain an adequate supply of eggs from young fish (1 or 2 years old) in which ovarian damage is not yet extensive.

Proceedings Of Perdix I: Hungarian Partridge Workshop, The Wildlife Society, Central Mountains And Plains Section, The Wildlife Society, North Dakota Chapter, North Dakota Game And Fish Department

Galliformes Specialist Group and Affiliated Societies: Conference Proceedings

Perdix I has succeeded in its major objective of bringing Hungarian partridge research and management people together in one place for introduction to one another and for a mutually beneficial exchange of information. A major communications bridge has been gapped by the informalization that occurs with the development of face-to-face relationships, a realization of how similar everyone's technical problems are, and an expression of concern regarding the need to develop work plans and guidelines to help direct future research and management by avoiding unnecessary duplication that often occurs with poor communications. As regards communications, it is refreshing to know that …

Comparison Of Coyote And Coyote X Dog Hybrid Food Habits In Southeastern Nebraska, Brian R. Mahan

University of Nebraska State Museum: Mammalogy Papers

The recent taxonomic study by Mahan et al. (1978) documented the occurrence of coyote (Canis latrans) X dog (C. familiaris) hybrids in Nebraska. This study, and those by Freeman (1976) in Oklahoma and Gipson et al. (1974) in Arkansas show coyote x dog hybrids, though not abundant, to be numerous in some areas. The purpose of the present study was to compare the stomach contents of coyote x dog hybrids collected by Mahan et al. (1978) from southeastern Nebraska with those of contemporary coyotes. Stomachs of 12 coyote x dog hybrids and 16 coyotes collected November …

Karyotypes Of Shrews Of The Genera Cryptotis And Blarina (Mammalia: Soricidae), Hugh H. Genoways, James C. Patton Iii, J. R. Choate

University of Nebraska State Museum: Mammalogy Papers

Cryptotis parva has a diploid number of 52 and a fundamental number of 50. Blarina brevicauda in Nebraska and Pennsylvania has a diploid number of 49 or 50 and a fundamental number of 48. Blarina carolinensis in Nebraska and Kansas has a diploid number of 52 and a fundamental number of 62. The X-chromosome in all 3 species is a large metacentric chromosome. The Y-chromosome is a small acrocentric in Blarina, whereas in Cryptotis it is a small subtelocentric.

Reproductive Performance Of Swine Bred To Produce Purebred And Two-Breed Cross Litters, L. D. Young, R. K. Johnson, I. T. Omtvedt

Department of Animal Science: Faculty Publications

These data included the records of 818 purebred gilts and sows of Duroc, Hampshire and Yorkshire breeding mated to produce all purebreds and all possible two-way crosses. A total of 212 gilts were slaughtered 30-day postbreeding (72 purebred matings and 140 crossbred matings) to evaluate ovulation rate, number of live embryos, average embryo length and embryo survival rate. A total of 450 litters (161 purebred and 289 crossbred) were farrowed to evaluate litter size, litter weight and average pig weight at O, 21 and 42 days postfarrowing. Litters were farrowed in the spring and fall of 1971 and 1973 and …

Whole Issue Nebraska Bird Review (December 1976) 44(4)

Nebraska Bird Review

Table of Contents

Food Remains from a Barn Owl Nest in Nebraska ........................54

1976 Fall Field Day ........................57

Parasitic (?) Jaeger at Lake Manawa, Iowa ........................58

Book Reviews ........................59

Notes ........................60

Index of Volume XXX XIV ........................62

Characterization Of Biological Types Of Cattle Iii. Carcass Composition, Quality And Palatability, R. M. Koch, M. E. Dikeman, D. M. Allen, M. May, J. D. Crouse, D. R. Campion

Department of Animal Science: Faculty Publications

Composition and quality characteristics of 1,121 steer carcasses obtained after mating Hereford and Angus cows to Hereford, Angus, Jersey, South Devon, Limousin, Charolais and Simmental sires were compared at a (1) constant age, (2) constant weight, and (3) constant percentage of fat in the longissimus muscle. Taste panel evaluation was made on a subsample of 496 carcasses. Growth rate of retail product, fat trim and bone differed significantly among sire breed groups. Breed group differences in relative proportions of retail product, fat trim and bone were largest when compared at a constant carcass weight and smallest when compared at equal …