Animal Sciences Commons^™

Observations On Sound Production In The Anatidae, Paul A. Johnsgard

Paul Johnsgard Collection

It has been known for a long time that, among non-passerine birds, the Anatidae are remarkable for the diversity of specializations in the trachea and syrinx, associated with sound production. It has also been recognised that these variations have taxonomic significance (Heinroth 1911; Johnsgard 1961), but virtually no attempts have been made to correlate the complex tracheal structures with the sounds produced. Yet the group offers many fascinating problems such as the adaptive significance of the looping of the trachea, either outside the body cavity as in the Magpie Goose Anseranas semipalmata, or inside the sternum as in the …

Morphology Of The Spores Of Myxosoma Cerebralis (Hofer, 1903) And M. Cartilaginis (Hoffman, Putz, And Dunbar, 1965)*, Glenn L. Hoffman, Jiří Lom

United States Fish and Wildlife Service: Publications

The spore of Myxosoma cerebralis is redescribed and compared with that of a close relative, M. cartilaginis. M. cerebralis is smaller, with greater variability in size and shape. It possesses a mucous envelope whereas M. cartilaginis does not. The surface architecture of M. cerebralis, as seen with the scanning electron microscope, differs in possessing a conspicuous circumsutural groove, prominent polar filament pores, and a mucous envelope.

Protozoan And Helminth Parasites Of White-Tailed Deer (Odocoileus Virginianus) In Southern Illinois, Sarah M. Mugwanya

Masters Theses

No abstract provided.

End Matter, Vol. 12 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Distribution Of Pseudomonad Fluorescence In The Body Of Anguispira Kochi (Pfeiffer), Roger Lowell Yates

Masters Theses

No abstract provided.

Effect Of Splenectomy On Relapse Of Hemal Parasites In Pigeons, Phillip James Sprino

Masters Theses

No abstract provided.

Nutrition Studies Of The Brindled Madtom, Noturus Miurus Jordan, Based On Stomach Content Analysis, Randall Stephen Madding

Masters Theses

Brindled madtoms and small channel catfish (140 mm or less) were examined to determine their food habits and the possibility of competition for food organisms between the two species when collected from the same area.

Two hundred twenty-three brindled madtoms were collected from Polecat Creek (study area I) 3 miles southwest of Ashmore, Coles County, Illinois. The study in Polecat Creek was conducted from July 10, 1967 to June 5, 1968, collections being made approximately every month. Two hundred forty-five brindled madtoms and 140 channel catfish were collected from the Embarras River (study area II) 2 miles south of Charleston, …

Reproductive Cycle Of The Male Snapping Turtle, Chelydra Serpentina Serpentina (Linné), Harold Edward Benny

Masters Theses

Thirty-seven male Chelydra s. serpentina were collected from Illinois, Louisiana, Mississippi, Tennessee, and Wisconsin during months of activity from May, 1969 to June 1971. Carapace length for each specimen was measured, and testes and epididymides were dissected out, weighed, measured, fixed, and preserved in Baker's neutral formalin within seven days of capture. Paraffin sections were stained with hematoxylin and eosin. Frozen sections were stained with Sudan IV.

The spermatogenic cycle was similar to those of other Chelonians and reptiles exhibiting post-nuptial spermatogenesis. In Illinois spermatocytogenesis begins in late March or early April. Meiosis is evident throughout May and early June. …

Trap Manifested Behavior Trap Reflected Density Trap Reflected Distribution And Foods Consumed By Raccoons (Procyon Lotor L.) In Two Natural Areas Of Virginia, Elton L. Winslow

Biological Sciences Theses & Dissertations

A study was undertaken comparing populations of raccoons (Procyon lotor L.) in two natural areas of Virginia, one in the Piedmont physiographic province at Montpelier and the other in the coastal plain at Newport News. Comparisons were made with respect to differences in: (1) capture and recapture success, (2) relative trap reflected density, (3) trap reflected distribution with respect to aquatic habitat, and (4) in food consumption. Comparison of capture data indicated that capture success per 100 trap nights was much higher at Newport News (1.58) than at Montpelier (.76). However a similar comparison of recapture success per …

Bacula Of Some Neotropical Bats, Randall E. Brown, Hugh H. Genoways, J. Knox Jones Jr.

University of Nebraska State Museum: Mammalogy Papers

Neotropical bats representing 56 species of five families were examined for presence or absence of a baculum. Members of the families Noctilionidae and Phyllostomatidae (sensu lato) have no os penis, but the bone was found in all species studied of Emballonuridae, Natalidae, and Vespertilionidae. The bacula of seven emballonurids, one natalid, and seven vespertilionids are briefly described and figured.

Birdsong In Darkest December Fitting Paean To Morning Light, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Bird Count Scheduled By Society, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

More Than Mishaps Required To Cancel Birding Excursion, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Observers Sight 104 Species During Tarrant Field Outings, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

End Matter, Vol. 12 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 12 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

A Comparative Study Of The Head And Thoracic Osteology And Myology Of The Skinks Eumeces Gilberti Van Denburgh And Eumeces Skiltonianus (Baird And Girard), David F. Nash, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

The differences observed from the osteology and myology are few and subtle.

Neither species is consistent in having all of the anatomical characters equal. E. skiltonianus, however, is more variable than gilberti. This species: 1. exhibits a wider range of variation in the number of slips of the intermandibularis anterior; 2. has two distinct bundles of the depressor mandibularis; and 3. has variation in the anterior suture pattern of the frontal, nasal, prefrontal and maxilla elements. E. gilberti on the other hand has: 1. only one distinct bundle of the depressor mandibularis; 2. a frequent reduction of the relative size …

Whole Issue Nebraska Bird Review (Dec 1970) 38(4)

Nebraska Bird Review

TABLE OF CONTENTS

1970 (Forty-fifth) Spring Migration and Occurrence Report ................74

1970 Fall Field Day ................87

Book Review ................88

Notes ................88

Index of Volume XXXVIII ................93

Additional Notes An Some Mammals From Eastern Nebraska, Hugh H. Genoways, Jerry R. Choate

University of Nebraska State Museum: Mammalogy Papers

Field studies concerned primarily with distribution of the short-tailed shrew, Blarina brevicauda, in eastern Nebraska have resulted in noteworthy records of several other species of small mammals. These field studies, which were supported by a grant from the Kansas Academy of Science, entailed extensive trapping of prairie habitats in Cass County, approximately 15 miles west of the Missouri River. In addition to the species discussed below, specimens of Reithrodontomys megalotis, Peromyscus maniculatus, P. leucopus, and Mus musculus were obtained at several localities. All catalogue numbers in the following accounts refer to specimens deposited in the Museum of Natural …

Bird Art Collections Exhibited For State Ornithological Unit, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Conservation Unit Tells How To Conduct Ecology Crusade, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Roasted Soybeans For Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal, Richard Berns

South Dakota Swine Field Day Proceedings and Research Reports, 1970

Soybeans contain about 18% fat. In the past it has been economical to process the soybeans into soybean meal. Soybean meal is the major protein supplement fed to swine. The recent development of new equipment to cook soybeans on the farm has resulted in a renewed interest in the use of cooked soybeans in swine rations. The objectives of the study reported here were to compare the performance of pigs fed whole soybean meal and to study the effects of whole soybeans on the carcasses produced.

Protein And Lysine Levels In Growing-Finishing Swine Rations, R. C. Wahlstrom, G. W. Libal, J. F. Fredrikson

South Dakota Swine Field Day Proceedings and Research Reports, 1970

Cereal grains are particularly low in lysine, one of the essential amino acids, and a protein supplement must be fed with grains to supply additional lysine as well as other amino acids. The purpose of the experiment reported herein was to study the performance of growing and finishing pigs when fed rations of different protein content with and without additional lysine supplementation.

Feeding Stalls For Brood Sows, George W. Libal, Richard C. Wahlstrom, J. W. Mccarty

South Dakota Swine Field Day Proceedings and Research Reports, 1970

How to assure that each sow gets her fair share of feed and how to control the "boss" sows are management problems facing the producer who is limit feeding groups of sows in order to get maximum litter size and minimum gestation feed costs. Feeding stalls have proven very effective in achieving both of these objectives. There are several types of commercial stalls on the market as well as several good designs for homemade feeding stalls. The type used South Dakota State University has drawn considerable interest by producers and many have asked for material lists and costs. These stalls …

The Influence Of Energy During Estrus Of On Ovulation Rate, Goerge W. Libal, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1970

Recently, English workers have reported that when sows or gilts that were being limit fed (3 to 4 lb. per day) were allowed a double quantity of feed only on the first feed following breeding the number of ovum shed was increased. When sows were allowed to complete gestation, litter size was larger by approximately 2 pigs. The experiment reported herein was an attempt to duplicate the English work and evaluate this method of "flushing" under South Dakota conditions.

A Study Of Diet Preference By Early Weaned Pigs, Larry Hauser, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1970

The trial reported here was designed to compare the single-stimulus method of palatability testing with the free-choice selection method and to determine the effects of partially delactosed whey, with and without sugar, on the gain and feed efficiency of early weaned pigs.

Effect Of Environment, Sex And Protein Level Of Ration On Performance And Carcass Characteristics Of Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal, Jacob F. Fredrikson

South Dakota Swine Field Day Proceedings and Research Reports, 1970

Research conducted at the Southeast South Dakota Experiment Farm during the winter of 1968-69 and reported at the 1969 Swine Field Day (A.S. Series 69-38) indicated that the performance of pigs fed rations containing 15% protein to about 115 lb. and 12% protein to market weight was equal to that of pigs fed a ration 17% protein to 115 lb. reduced to 14% protein from 110 lb. to market weight. In the previous trial about 9% more feed was required for those pigs fed in the uncontrolled environment; however, rate of gain was not affected by the type of housing. …

Review Of Research Of The Value Of High Moisture Corn For Growing And Finishing Swine, L. J. Kortan

South Dakota Swine Field Day Proceedings and Research Reports, 1970

Work at South Dakota State University during the 10 year period 1942-1951 with soft corn for growing-finishing pigs showed that hogs are well adapted to utilize soft corn. In all six trials during this period, pigs fed soft corn showed a lower rate of gain per day than the pigs fed hard corn. However, when the soft corn was dried and fed, the pigs made practically the same rate of gain as the pigs fed hard corn. Compared on a dry matter basis, the value of soft corn was practically equal to hard corn for growing pigs. However, the pigs …

High-Lysine Corn In Growing-Finishing Swine Rations, Keith E. Gilster, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1970

The objectives of this experiment were to compare the performance and carcass characteristics of growing-finishing pigs fed rations of normal or opaque-2 corn containing recommend and low levels of protein.

High Lysine Corn Fed Free-Choice To Growing-Finishing Swine, Richard C. Wahlstrom, George W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1970

Analyses of opaque-2 corn have indicated a higher content of lysine and tryptophane than found in normal corn. Since these two amino acids are the most limiting amino acids in most practical swine diets, opaque-2 corn should permit a reduction in the need for supplementary protein. Experiments conducted at the South Dakota Agricultural Experiment Station and at other Experiment Stations have shown this to be true, with less protein supplement needed in swine rations containing opaque-2 corn than in rations containing normal corn.