Digital Commons Network^™

Milk Production Of Dairy Cows Fed Wet Corn Gluten Feed During The Dry Period And Lactation, Paul J. Kononoff, S. K. Ivan, W, Matzke, R. J. Grant, R. A. Stock, Terry J. Klopfenstein

Department of Animal Science: Faculty Publications

An experiment was conducted with 36 primiparous and 40 multiparous Holstein cows to examine the effects of feeding wet corn gluten feed (WCGF) on 305- d milk production, dry matter (DM) intake, body condition score (BCS), and health. The experimental treatments included: 1) control—WCGF not fed (n = 27); 2) WCGF-L—cows received diets containing WCGF (38% DM basis) during lactation (n = 23); and 3) WCGFDL— cows received diets containing WCGF (38% DM basis) during the dry period and lactation (n = 26). During the dry period, cows consuming WCGF were observed to have a significant gain in BCS (0.07 …

Influence Of Corn Hybrid Traits On Digestibility And The Efficiency Of Gain In Feedlot Cattle, S. L. Jaeger, Matt K. Luebbe, C. N. Macken, Galen E. Erickson, Terry J. Klopfenstein, W. A. Fithian, David S. Jackson

Department of Animal Science: Faculty Publications

Two experiments were conducted to determine the influence of chemical and physical corn kernel traits on digestibility and feedlot cattle performance. Seven commercially available corn hybrids representing a range in kernel traits were evaluated for a variety of chemical and physical traits that included test weight, 1,000-grain weight, kernel size, starch, CP, amylose, Stenvert Hardness tests (kernel hardness traits), tangential abrasive dehulling device loss, 12-h in vitro starch disappearance, and rate and extent of in situ DM disappearance. Differences among hybrids existed for all physical kernel traits measured. In Exp. 1, 224 steers in 28 pens were fed the same …

Effects Of Age, Weight, And Fat Slaughter End Points On Estimates Of Breed And Retained Heterosis Effects For Carcass Traits, A. Ríos-Utrera, L. V. Cundiff, K. E. Gregory, R. M. Koch, M. E. Dikeman, M. Koohmaraie, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

The influence of different levels of adjusted fat thickness (AFT) and HCW slaughter end points (covariates) on estimates of breed and retained heterosis effects was studied for 14 carcass traits from serially slaughtered purebred and composite steers from the US Meat Animal Research Center (MARC). Contrasts among breed solutions were estimated at 0.7, 1.1, and 1.5 cm of AFT, and at 295.1, 340.5, and 385.9 kg of HCW. For constant slaughter age, contrasts were adjusted to the overall mean (432.5 d). Breed effects for Red Poll, Hereford, Limousin, Braunvieh, Pinzgauer, Gelbvieh, Simmental, Charolais, MARC I, MARC II, and MARC III …

Aquatic Macroinvertebrates Of The Strawberry River System In North-Central Arkansas, George L. Harp, Henry W. Robison

Journal of the Arkansas Academy of Science

The Strav/berry River has been designated an Extraordinary Resource Water, an Ecologically Sensitive Water Body, and a Natural and Scenic Waterway. As such, it is particularly important that the biodiversity of this river system be documented thoroughly. The purpose of this research was to develop a comprehensive list of the aquatic macroinvertebrates of the Strawberry River and its major tributaries. The information was developed from a thorough literature review and by examining specimens housed in various collections of the Arkansas State University Museum of Zoology and collections of the authors. The latter included 9 collections at 4 sites along the …

Ichthyofaunal Assemblages In Three Approximate But Ecologically Diverse Streams In Clark County, Arkansas, C. Renn Tumlison, Scott Jordan, Lesley Self, Henry W. Robison

Journal of the Arkansas Academy of Science

Three tributaries to the Ouachita River in eastern Clark County, Arkansas, empty into the river within a collective distance of about 9 km. The streams drain basins derived from the Wilcox formation, partially overlain by terrace and alluvial deposits. Despite their proximity, the streams are very different: L'Eau Frais has a gravel substrate and was recognized by the French as a cool water stream, Tupelo Creek is a bottomland stream from which numerous Water Tupelo (Nyssa aquatica) emerge, and Saline Bayou was named due to its marked salinity. We studied the assemblages of fishes in these 3 very different drainages …

Salinity Controls Phytoplankton Response To Nutrient Enrichment In The Great Salt Lake, Utah, Usa, Amy M. Marcarelli, Wayne A. Wurtsbaugh, O. Griset

Watershed Sciences Faculty Publications

To examine how salinity and nutrient supply interact to control phytoplankton community composition, nutrient limitation, and dinitrogen (N2) fixation rates in the Great Salt Lake (Utah, USA), we conducted a series of bioassay experiments with plankton from both Gilbert Bay, where salinities are near 160 g·L–1, and Farmington Bay, where salinities range from 10 to 90 g·L–1. Six-day nutrient addition bioassay experiments showed that the extant phyto plankton communities in both bays were limited by nitrogen (N). However, in 28- to 30-day factorial bioassay experiments in which both salinities and nutrient supply were manipulated, phosphorus stimulated chlorophyll a as much …

Proceedings Of The Western Australian Dhufish Workshop 2004, Mark Pagano, Terry Fuller

Fisheries Occasional Publications

The Western Australian Dhufish Workshop 2004 was a joint project between Recfishwest and the Western Australian Department of Fisheries.

The workshop incorporated presentations from the Department of Fisheries, Recfishwest, the Western Australian Fishing Industry Council, Murdoch University and Challenger TAFE to showcase current knowledge relating to the iconic dhufish in Western Australia. The perspectives of a recreational fisher, a commercial wetline operator and a metropolitan charter boat operator were also presented.

Through information sharing and discussion the workshop provided a platform to better understand the fundamental issues that underpin current and future management arrangements for this valuable resource. Both commercial …

The Vertebrate Fauna Of The Upper Permian Of Niger. Iv. Nigerpeton Ricqlesi (Temnospondyli: Cochleosauridae), And The Edopoid Colonization Of Gondwana, J. Sebastien Steyer, Ross Damiani, Christian A. Sidor, F. Robin O’Keefe, Hans C.E. Larsson, Abdoulaye Maga, Oumarou Ide

Biological Sciences Faculty Research

We describe the edopoid temnospondyl Nigerpeton ricqlesi from the Upper Permian Moradi Formation of northern Niger on the basis of two partial skulls and tentatively associated postcranial material. This crocodile-like taxon displays several edopoid characters states such as a long prenarial region with enlarged premaxillae, elongated vomers, large, posteriorly tapering choanae, and a jugal that broadens anteriorly. Nigerpeton possesses a unique carnivorous dentition. It is autapomorphic in its possession of an extremely elongate snout bearing a maxillary bulge that accommodates three hypertrophied caniniform teeth, inner premaxillary tusks, and anterior paired fenestrae, which pierce the skull roof. In addition, both the …

Fisheries Occasional Publication No. 33 - Department Of Fisheries Community Survey 2005, Tara Baharthah

Fisheries Occasional Publications

A telephone survey of the Western Australian public was conducted to assess the level of success of programs implemented by the Department of Fisheries. The sample comprised of 700 interviews, 422 in the metropolitan area and 278 in regional areas throughout the State.

This community survey was used to determine the level of recall and awareness of the Department of Fisheries, the understanding and support of the community for the Department of Fisheries' management strategies and to examine key aspects of community participation in recreational fishing.

It is estimated that the overall participation rate for recreational fishing in Western Australia …

Notes On The Mammals Found In Kazdağı National Park And Its Environs, Nuri̇ Yi̇ği̇t, Ali̇ Demi̇rsoy, Ahmet Karataş, Şaki̇r Özkurt, Ercüment Çolak

Turkish Journal of Zoology

The present study is based on species collected and observed in Kazdağı National Park and its surroundings. Field collections yielded 40 mammal species from 6 orders: Insectivora (4), Chiroptera (14), Lagomorpha (1), Rodentia (11), Carnivora (8), and Artiodactyla (2), Of the species recorded in this study, 6 were new records from north-west Anatolia: Sorex volnuchini, Rhinolophus hipposideros, Myotis emarginatus, Eptesicus serotinus, Hypsugo savii, and Microtus subterraneus.

Distribution And Ecology Of Freshwater Ichthyofauna Of The Biga Peninsula, North-Western Anatolia, Turkey, Hasan Musa Sari, Süleyman Balik, Mustafa Ruşen Ustaoğlu, Ali̇ İlhan

Turkish Journal of Zoology

This research was carried out at 35 stations in 16 different streams on the Biga Peninsula during the spring and summer of 2000 and 2001 to determine the freshwater ichthyofauna and community features. In addition, some physical and chemical parameters of the streams were determined in their natural environment. Fourteen taxa belonging to 5 families were determined. Leuciscus cephalus, Petroleuciscus borysthenicus, Rhodeus amarus, Phoxinus phoxinus, Chalcalburnus chalcoides, Barbus tauricus escherichi, Gobio gobio, Capoeta capoeta bergamae, Vimba vimba, Cobitis fahirae and Neogobius fluviatilis are recorded for the first time from the Biga Peninsula. The most abundant species in the study area …

A Study On The Breeding Biology Of Some Bat Species In Turkey (Mammalia: Chiroptera), Nursel Aşan, İrfan Albayrak

Turkish Journal of Zoology

This study is based on the records of gestation and lactation periods of 17 bat species (Rousettus aegyptiacus, Rhinolophus ferrumequinum, R. hipposideros, R. euryale, R. blasii, Myotis myotis, M. blythii, M. emarginatus, M. nattereri, M. mystacinus, M. capaccinii, Eptesicus serotinus, Pipistrellus pipistrellus, P. kuhlii, P. savii, Plecotus auritus, and Miniopterus schreibersii) caught from various localities in Turkey and of the development stages of embryos belonging to Myotis species. It was determined that the gestation period of some insectivorous bat species was generally May and June and following this period the lactation period was June and July in Turkey. In the …

Contribution To The Taxonomical And Biological Characteristics Of Sciurus Anomalus In Turkey (Mammalia: Rodentia), İrfan Albayrak, Ati̇lla Arslan

Turkish Journal of Zoology

This study is based on 62 Sciurus anomalus specimens obtained from Konya, Karaman, Kütahya and Çorum provinces between 1997 and 2002. Some ecological and biological features of the species, including habitat, nest-sites, fur colour, baculum and phallus were investigated. In this species, the chromosome number (2n) is 40. For the taxonomical evaluation of Sciurus anomalus, morphometric data of the specimens were used. The specimens were discussed at the subspecies level, comparing to the relevant literature, and it was concluded that our specimens represent the nominate form.

Mass Production And Release Of Calosoma Sycophanta L. (Coleoptera: Carabidae) Used Against The Pine Processionary Moth, Thaumetopoea Pityocampa (Schiff.) (Lepidoptera: Thaumetopoeidae), In Biological Control, Mehmet Kanat, Muhammet Özbolat

Turkish Journal of Zoology

This study was conducted to determine the mass production of Calosoma sycophanta L. under laboratory conditions (23 °C, 60%-65% RH and a photoperiod of 8:16 (L:D) h, 85%-90% soil humidity) between 2001 and 2004 in Kahramanmaraş. The adult emergence period of C. sycophanta started on 21 February and extended until 7 March (from soil). When they emerged, they fed on caterpillars of the pine processionary moth. The egg laying period continued for 20-25 days with a hatching period 6-13 days, Three larval instars were observed. Duration of the first instars was 7-11 days, of the second was 8-12 days, and …

The Parasitoid Complex Of The Citrus Leafminer, Phyllocnistis Citrella Stainton (Lepidoptera: Gracillariidae) In The East Mediterranean Region Of Turkey And Their Role In Biological Control, Nai̇me Zülal Elekçi̇oğlu, Nedi̇m Uygun

Turkish Journal of Zoology

A survey of parasitoids of the citrus leafminer, Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae), was carried out in the citrus orchards in the east Mediterranean region of Turkey during 1995-2001. Their relative abundance and rate of parasitism were also determined. Ten species of parasitoids were identified: Cirrospilus sp. nr. lyncus (Walker), C. pictus (Nees), C. variegatus (Masi), C. vittatus Walker, C. ingenuus Gahan, Ratzeburgiola incompleta (Boucek), Diglyphus isaea (Walker), Semielacher petiolatus (Girault), Citrostichus phyllocnistoides (Narayanan), Neochrysocharis formosa (Westwood) (Hymenoptera: Eulophidae). Neochrysocharis sp., Chrysocharis sp., Barycapus sp., Pnigalio sp. (Hymenoptera: Eulophidae) and the Pteromalus sp. (Hym.: Pteromalidae) were also identified. Among these …

Karyological And Some Morphological Characteristics Of Spalax Leucodon Nordmann, 1840 (Mammalia: Rodentia) Superspecies Around Kastamonu Province, Turkey, Mustafa Sözen, Murat Sevi̇ndi̇k, Ferhat Matur

Turkish Journal of Zoology

The karyotypes and morphology of 98 specimens of the subterranean mole rat Spalax leucodon Nordmann, 1840 across 18 localities in and around Kastamonu province were analysed. It was determined that S. leucodon has 2n = 54, NF = 72; 2n = 56, NF = 74; 2n = 58, NF = 74; 2n =60, NF = 74 in the populations from the Kastamonu region. According to these karyological findings based on chromosome morphology the diploid chromosome numbers of 2n = 56, 2n =58, and 2n = 60 determined here are new for Spalax leucodon in Turkey. Because diploid numbers of these …

The Feeding Biology Of Ophisops Elegans Menetries, 1832 (Reptilia: Lacertidae) Populations Of The Bursa Region, Abdulmüttali̇p Akkaya, İsmai̇l Hakki Uğurtaş

Turkish Journal of Zoology

The feeding biology of Ophisops elegans inhabiting Bursa was investigated. Stomach contents of 66 adult (28 males, 38 females) specimens collected from 3 localities were investigated by numerical analysis. Most of the foods of the Ophisops elegans specimens were insects (64.58%), the majority of which were of larval form (19.44%). Two specimens that were collected from Gürsu were maintained in a terrarium to observe their feeding behaviors. During observations, Ophisops elegans exhibited various feeding behaviors depending on the type of prey and sometimes bit and ate pieces of its prey (legs, wings, etc.).

Ecology Of The Missouri River. Progress Report, Dingell-Johnson Project F-75-R-24, Supplement I - Missouri River Creel Survey, Camp Creek To Kansas State Line, 1 April Through 13 October 2006., Gerald Mestl

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

This report describes Missouri River activities and results related to a channelized Missouri River creel survey conducted from 29 March through 10 October 2003. This is the fourth of a planned annual creel survey to be conducted on alternating sections of the channelized Missouri River to measure changes in recreational fishing activity, especially those changes due to large scale habitat restoration efforts. Future reports will contain additional analyses of these data. Anglers spent over 30,000 hours fishing the Missouri River from Camp Creek (rk 883.5) to the Kansas state line (rk 790.2) during the survey period. Effort peaked during the …

A Health Risk Evaluation For Pallid Sturgeon (Scaphirhynchus Albus) In The Lower Platte River Using Shovelnose Sturgeon (Scaphirhynchus Platorynchus) As A Surrogate, Matthew S. Schwarz, Christina D. Lydick, Donald E. Tillit, Diana M. Papoulias, Timothy S. Gross

United States Fish and Wildlife Service: Publications

Most sturgeon species worldwide have been in steep decline since the 1900s. This research evaluated shovelnose sturgeon health, reproduction, and exposure to environmental contamination in the lower Platte River. Shovelnose sturgeon served as a surrogate species for the endangered pallid sturgeon and their health was assessed by incorporating measurements of general health with hepatic, immune, and reproductive system biomarkers. Environmental contaminants were measured in water, potential pallid sturgeon food items (cyprinid minnows), and shovelnose sturgeon digesta, liver, and blood plasma. Contaminants detected in shovelnose sturgeon at concentrations of concern included PCBs, selenium, and atrazine. Total PCBs in carcasses (n = …

Genes Expressed In Response To Prrsv, Derek Petry, Rodger K. Johnson, Joan Lunney

Nebraska Swine Reports

Gene maps of livestock are rapidly being developed and have led to an explosion of knowledge in recent years about genes affecting economic traits. One potential application of this information that would have major economic value is in selection of livestock for resistance to disease. Even though much has been learned about Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) since it was first identified, PRRSV continues to cause significant economic losses in many herds. Traditional approaches to manage PRRSV can be effective, but may be costly and have not always resulted in permanent control. This is a disease for which …

Freezing Swine Embryos: Do Success Rates Differ Between Breeds?, Marcelo Montagner, Paulo B. D. Gonçalves, Ginger Mills, Ronald K. Christenson, Brett R. White

Nebraska Swine Reports

Successful freezing, or cryopreservation, of embryos could greatly impact the pork industry, serving as a tool for conservation of valuable germplasm and enhancing biosecurity for transfer of genetic material. Pig embryos are very sensitive to cooling and few reports have shown successful developmental rates following freezing. The objectives of this study were to determine the efficiency of freezing pig embryos using a microdroplet vitrification method and to investigate in vitro development of embryos from Chinese Meishan and occidental white crossbred females following cryopreservation at different stages of embryonic development. Preliminary studies using the microdroplet vitrification method for cryopreservation and embryo …

Regulation Of Pituitary Gene Expression In Lines Of Swine With Different Ovulation Rates, Benjamin Bass, Rebecca Cederberg, Ginger Mills, Brett R. White

Nebraska Swine Reports

Litter size plays a major role in the economics of pork production. Even modest increases in average litter size can have considerable effects on overall profitability. Two major components of litter size – ovulation rate and embryonic survival – have been used in a selection index project ongoing for several generations at the University of Nebraska–Lincoln (UNL). Additionally, the Chinese Meishan breed is one of the most prolific breeds, producing four to five more pigs per litter than white crossbred females. We investigated the role of the gonadotropin-releasing hormone (GnRH) receptor and gonadotropin subunit genes in determination of ovulation rate …

The Winter Ecology Of The Piping Plover (Charadrius Melodus) In Coastal Georgia, Brandon Lennon Noel

College of Graduate Studies: Theses & Dissertations

Author's abstract: The Piping Plover (Charadrius melodus) is a federally listed species with three distinct breeding populations, including Great Plains (threatened), Great Lakes (endangered), and Atlantic Coast (threatened), all of which winter along the Atlnatic and Gulf coasts of the United States. I studied the winter ecology of the Piping Plovers on Little St. Simons Island (LSSI), Georgia, from 2003-2006, with emphasis on the conservation significance of this site for the endangered Great Lakes population. During 2003-2004 and 2004-2005, LSSI supported up to 100 Piping Plovers during peak migration, and approximately 40 birds wintered at this site. All populations had …

The Adaptive Value Of Aggregation Among Juvenile Caribbean Spiny Lobster: An Evaluation Using Individual-Based Modeling, Thomas W. Dolan Iii, Mark J. Butler Iv

Biological Sciences Faculty Publications

Ontogenetic changes in gregariousness by pre-reproductive animals, like that observed in juvenile Caribbean spiny lobsters (Panulirus argus), may be adaptive and reflect size-specific changes in the effectiveness of aggregation in promoting survival. Alternatively, aggregation may simply result from changes in the distribution or availability of suitable habitat structure, or from other behaviors that enhance survival. There are currently two hypotheses explaining the potential benefits of gregarious behavior in juvenile spiny lobsters, both of which focus on increasing survivorship by reducing predation pressure: the group benefit hypothesis and the guide hypothesis. The group benefit hypothesis argues that aggregations of …

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 7 2006, Several Authors

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

No abstract provided.

Instructions For Authors, Discovery Editors

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

No abstract provided.

Air Exchange Rate In A Horse Trailer During Road Transport, Joseph L. Purswell, Richard S. Gates, Laurie M. Lawrence, Jamey D. Jacob, Timothy S. Stombaugh, Robert J. Coleman

Biosystems and Agricultural Engineering Faculty Publications

Horses traveling by road commonly experience heat stress conditions and poor air quality, which may be caused by insufficient ventilation; however, there are few estimates of air exchange in a horse trailer during transport. Air exchange rate was measured at ten locations within a four-horse trailer (internal volume 18.5 m³) using tracer gas decay measurement to assess the adequacy of ventilation. Three vehicle speeds (13, 48, and 97 km h^-1) and three window configurations (all windows and roof vents closed, all windows open, all windows open and roof vents open forward) were tested with and without …

Suspension Of Gametogenesis In Green Sea Urchins Experiencing Invariant Photoperiod, S. Anne Boettger, Michael G. Devin, Charles W. Walker

Biology Faculty Publications

No abstract provided.

Initial Evaluation Of Novel Preparations Of Bordetella Avium By Determination Of Antibody Response Titers, Joel Gallagher, Stacy Higgins, Luc Berghman, Billy Hargis

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

The efficacy of killed vaccines generally is not equal to live vaccines. However, due to safety and ease of production, they remain a vital part of controlling and preventing diseases. In this study, the immune response to four different vaccination preparation techniques for the agent of bordetellosis of turkeys, Bordetella avium (BA), was compared. Preparation/inactivation techniques included (1) formalin inactivation, (2) opsonization of formalin-inactivated BA, (3) buffered acetic-acid BA inactivation, or (4) opsonization of buffered acetic-acid-inactivated BA. Non-adjuvated suspensions containing equal antigen mass were administered subcutaneously (0.2 mL) at day-of-hatch in all cases. For each treatment (N=40/treatment), plasma samples were …

Associative Memory In Three Aplysiids: Correlation With Heterosynaptic Modulation, Brian A. Hoover, Hoang Nguyen, Laura Thompson, William G. Wright

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Much recent research on mechanisms of learning and memory focuses on the role of heterosynaptic neuromodulatory signaling. Such neuromodulation appears to stabilize Hebbian synaptic changes underlying associative learning, thereby extending memory. Previous comparisons of three related sea-hares ( Mollusca, Opisthobranchia) uncovered interspecific variation in neuromodulatory signaling: strong in Aplysia californica, immeasureable in Dolabrifera dolabrifera, and intermediate in Phyllaplysia taylori. The present study addressed whether this interspecific variation in neuromodulation is correlated with memory of associative ( classical conditioning) learning. We differentially conditioned the tail-mantle withdrawal reflex of each of the three species: Mild touch to one side of the tail …