Animal Sciences Commons^™

Conjugated Linoleic Acids In The Dairy Cow: Biological Activities And Applications, Daniel G. Peterson

Animal Science

No abstract provided.

Bearing The Costs Of Human-Wildlife Conflict: The Challenges Of Compensation Schemes, Philip J. Nyhus, Steve A. Osofsky, Paul Ferraro, H Fischer, Francine Madden

Faculty Scholarship

No abstract provided.

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.

Response Of Cow-Calf Pairs To Water High In Sulfates, Hubert Patterson, Pat Johnson, George Perry, Roger Gates, Ron Haigh

South Dakota Beef Report, 2005

Data from our laboratory showed water sulfate levels of 3,000 ppm reduced performance and health of growing steers during summer months. In addition, water averaging 2,600 ppm in sulfates for cow-calf pairs had little impact on calf growth or milk production, but caused small reductions in cow BW and body condition score (BCS). This experiment was conducted to evaluate the effects of high sulfate water on cow and calf performance, milk production, and reproduction. Ninety-six crossbred, lactating cows (ages 2-13; average calving date of April 14) and their calves were assigned, after stratifying by age, weight, and previous winter management, …

Evaluation Of Dried Distillers Grains With Solubles As A Feedstuff For Heifers In The Last Trimester Fo Gestation, Chanda L. Engel, Hubert H. Patterson, George A. Perry, Ron Haigh, Jason Johnson

South Dakota Beef Report, 2005

Ninety-six crossbred heifers were used in an experiment to evaluate the effect of dried distillers grains plus solubles (DDGS), fed in the last trimester of gestation, on heifer performance and reproduction. Animals were blocked by previous heifer development strategy (Antelope Research Station range developed = ANT 1; Antelope Research Station dry lot developed = ANT 2; Cottonwood research station = CTW), stratified by expected calving date, body weight and body condition score, and randomly allotted to one of twelve pens. Each pen was randomly assigned to one of two treatments (6 pens/treatment; 4 pens per block). Treatments were 1) dried …

Forecasting Forage Yield On Clayey Ecological Sites In Western South Dakota Using Weather Data, Alexander J. Smart, Barry H. Dunn, Lan Xu, Patricia S. Johnson, Roger N. Gates

South Dakota Beef Report, 2005

The ability to forecast annual forage yield from weather data would be useful for making appropriate adjustments to stocking rates in order to achieve or maintain desired plant communities. Our objective was to determine the relationship between weather variables and annual forage yield from three distinct plant communities on clayey ecological sites in western South Dakota. Forage yield and weather data were collected from 1945 through 1960 at the Cottonwood Range and Livestock Research Station, in western South Dakota. Pastures stocked at 0.25, 0.40, and 0.60 AUM/acre from 1942 to 1960 developed into western wheatgrass-dominated, western wheatgrass-shortgrass co-dominated, and shortgrass …

Home Range And Behavior Of The Timber Rattlesnake (Crotalus Horridus), Jennifer P. Adams

Theses, Dissertations and Capstones

Seventeen timber rattlesnakes were surgically implanted with radio transmitters and subsequently radio-tracked to determine the home range and behavior, as well as cause-specific mortality, of timber rattlesnakes on production forests in Randolph County, West Virginia. Mean home range sizes were 94.3 ha, males; 31.2 ha, nongravid females; 8.5 ha, gravid females; and 44.7 ha, among sex classes. Among sex classes, the mean daily movement rate was 20.2 mper day; the mean maximum known distances from den sites was 1110.2 m; the mean distance from den sites was 514.2 m; and the mean total distance moved was 2852.9 m. Mean active …

Habitat Analysis By Hierarchical Scheme And Stream Geomorphology, James B. Spence

Theses, Dissertations and Capstones

A study was undertaken to classify eight stream reaches in the North Branch of the Potomac River watershed and determine if geomorphologic differences influenced the availability of fish habitat structure and fish density. Stream reaches were classified using Rosgen Level II (1996) methods, and fish habitat was determined using Hydraulic Channel Unit (HCU) classification based on a method modified from Bisson et al. (1982). Other habitat variables were also studied such as stream shading and physical habitat based on the Rapid Bioassessment Protocol (Barbour et al. 1999). Despite the differences in HCU density between sites, HCU density did not influence …

Comparisons Of Morphology And Reproductive Status Of Plethodon Glutinosus At High, Middle, And Low Elevations In West Virginia, Cynthia F. Lucas

Theses, Dissertations and Capstones

Plethodon glutinosus populations in West Virginia were looked at in three different elevations. Objectives were to determine if there is enough difference in elevation to cause different populations to vary in morphology and reproduction. Nine morphological measurements were taken to represent both size and proportional shape. Sexual dimorphism was found in all measurements only in low elevations, males being larger (p<0.001-p=0.041). Mean measurements between the three elevations showed significant differences (p<0.005) in all measurements excluding head width, tail length, and 3rd digit length. Salamanders were dissected; testes and vasa deferentia were removed from males and ovaries with follicles were removed from females. Results showed males in lower and middle elevations deposit spermatophores May-July. Low sample sizes in higher elevations provided inconclusive results. Females of lower elevations lay eggs early-mid summer. Middle and higher elevations results revealed a likely spring oviposition, or possibly a fall oviposition.

Aging Affects Stretch-Induced P70s6k And 4e-Bp1 Phosphorylation In Fast- And Slow-Twitch Muscle, Sreevani Uddemarri

Theses, Dissertations and Capstones

In the present investigation we compare the expression, basal activation and the ability of muscle stretch to activate the p70^S6k pathway in the fast-twitch extensor digitorum longus (EDL) and slow-twitch soleus of adult (6 mo. old), aged (30 mo. old) and very aged (36 mo. old) Fischer 344 x Brown Norway rats. Immunoblotting demonstrated that the tissue content of mTOR, p70^S6k, 4E-BP1 and GSK-3β decreased in the EDL and soleus in aged rats, while SHP-2 increased in the EDL and decreased in the soleus when compared to adult rats. Basal phosphorylation of 4E-BP1 increased in both the …

The Reproductive Cycle Of The Thorny Skate (Amblyraid Radiata) In The Western Gulf Of Maine, James A. Sulikowski, Jeff Kneebone, Scott Elzey, Joe Jurek, Patrick D. Danley, William Huntting Howell, Paul C.W. Tsang

Biological Sciences

The thorny skate (Amblyraja radiata) is a large species of skate that is endemic to the waters of the western north Atlantic in the Gulf of Maine. Because the biomass of thorny skates has recently declined below threshold levels mandated by the Sustainable Fisheries Act, commercial harvests from this region are prohibited. We have undertaken a comprehensive study to gain insight into the life history of this skate. The present study describes and characterizes the reproductive cycle of female and male thorny skates, based on monthly samples taken off the coast of New Hampshire, from May 2001 to May 2003. …

Age And Growth Estimates Of The Thorny Skate (Amblyraja Radiata) In The Western Gulf Of Maine, James A. Sulikowski, Jeff Kneebone, Scott Elzey, Joe Jurek, Patrick D. Danley, William Huntting Howell, Paul C.W. Tsang

Biological Sciences

The northwest Atlantic population of thorny skates (Amblyraja radiata) inhabits an area that ranges from Greenland and Hudson Bay, Canada, to South Carolina. Despite such a wide range, very little is known about most aspects of the biology of this species. Recent stock assessment studies in the northeast United States indicate that the biomass of the thorny skate is below the threshold levels mandated by the Sustainable Fisheries Act. In order to gain insight into the life history of this skate, we estimated age and growth for thorny skates, using vertebral band counts from 224 individuals ranging in size from …

Landscape Patterns Of Streams & Lakes In Montane Watersheds Determine Water Temperatures & Nutrient Transport: Watershed Analyses And N Tracer Experiments, Wayne A. Wurtsbaugh, J. Garrett, G. Burkart, W. Fleenor, K. Nydick, R. Hall, Michelle A. Baker

Watershed Sciences Faculty Publications

In glaciated mountains, lakes are interspersed through watersheds and connected by streams. Although lakes or streams are frequently studied as individual water bodies, studying them as integrated functional units provides considerable insight on temperature patterns, nutrient transport and other functions. In the Sawtooth Mountains (Idaho), inter-lake distance averages 2.8 km. In summer, lakes are solar collectors, and warm outflow streams as much as 10 C, thus increasing metabolic rates. These streams seldom cool to equilibrium temperatures before encountering another lake, where the waters tend to overflow and mix into the epilimnion. With overflow, N-15 tracer experiments demonstrated that water and …

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 6 2005, Several Authors

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

No abstract provided.

European Conference, Cynhadledd Ceiliog Y Rhos = 3rd International Black Grouse Conference (Llys Fasi Agricultural College, Ruthin, North Wales: March 20-25, 2005): Conference Review

Galliformes Specialist Group and Affiliated Societies: Conference Proceedings

The Countryside Council for Wales: The 2005 Black Grouse Conference, Roger Lovegrove

Spatially explicit modelling of black grouse (Tetrao tetrix L.) habitat quality evolution induced by green alder (Alnus alnobetula (Ehrh.) C. Koch) expansion on abandoned meadows in the northern French Alps, Samuel Decout, Philippe Delcros, and Jean-Jacques Brun

Factors affecting black grouse numbers: An overview of the part of predators [Short note], M. Loneux, Karl-Heinz Kolb, J.-C. Ruwet, and P. Poncin

Modelling the influence of climate on black grouse population dynamics in Lüneburger Heide (North Germany), Michèle Loneux, Manfred Lütkepohl, Jann Wübbenhorst, and James K. Lindsey

Modelling …

Letter From The Dean, Gregory J. Weidemann

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

No abstract provided.

Contents, Discovery Editors

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.

Effects Of Feeding Varying Concentrations Of Dry Distiller's Grains With Solubles To Finishing Steers On Feedlot Performance, Nutrient Management And Odorant Emissions, Clint S. Benson, Cody L. Wright, Kent E. Tjardes, Richard E. Nicolai, Bradley D. Rops

South Dakota Beef Report, 2005

A study was conducted to determine the effects of feeding varying concentrations of dried distillers grains with solubles (DDGS) to finishing steers on feedlot performance, nutrient management, and odorant emissions. Prior to initiation of the trial, 192 steers (initial BW = 826 ± 18 lb) were blocked by receiving date, weighed, and randomly allotted to 16 dirt floor pens (48.2 ft x 113.8 ft; 5% slope). Pens were then randomly assigned to one of four dietary treatments. The control diet (CON) contained 82% cracked corn, 10% alfalfa hay, 4% molasses, 3.2% supplement, and 0.8% urea. In the remaining three treatment …

2005 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University

South Dakota Beef Report, 2005

This is the 2005 South Dakota Beef Report. The articles published in this report summarize many of the beef cattle research activities conducted at South Dakota State University during 2005. The articles in this report have many levels of application. Some information has immediate application for your farm, ranch, or agribusiness. The articles include information on nutrition, feed management, reproductive management, health, growth and development, and economics of the cattle and beef industry in South Dakota.

Genetic Relationships Between Male And Female Reproductive Traits In Beef Cattle, G. Gargantini, L. V. Cundiff, D. D. Lunstra, L. D. Van Vleck

Roman L. Hruska U.S. Meat Animal Research Center: Reports

Reproductive traits were measured for 234 bulls and 1184 heifers from matings of three dam breeds (Angus, Hereford, and U.S. Meat Animal Research Center III) with six sire breeds (Angus, Hereford, Brahman, Boran, Tuli, and Belgian Blue) from the Germ Plasm Evaluation (GPE) Program at Roman L. Hruska US Meat Animal Research Center. Male traits were yearling scrotal circumference (YSC), height (YH), and yearling BW; age at puberty (AP1; production of 50 million sperm with ≥10% progressive motility); age, scrotal circumference, average testis length, and testicular volume when 500 million sperm were …

Endangered And Threatened Wildlife And Plants; Determination Of Endangered Status For The Salt Creek Tiger Beetle (Cicindela Nevadica Lincolniana)

United States Fish and Wildlife Service: Publications

We, the U.S. Fish and Wildlife Service (Service), determine endangered status for the Salt Creek tiger beetle (Cicindela nevadica lincolniana), pursuant to the Endangered Species Act (Act) of 1973, as amended (Act). This species is endemic to the saline wetlands of eastern Nebraska (NE) and associated streams in the northern third of Lancaster County and southern margin of Saunders County. Only three small populations of this subspecies remain, and the known adult population size in 2005 was only 153 individuals. This final rule extends Federal protection and recovery provisions of the Act to the Salt Creek tiger beetle.

Contaminant Exposure And Reproductive Health Of Sandhill Cranes In The Central Platte River Valley, Nebraska., Matthew S. Schwarz, Christina D. Lydick, Karen J. Nelson, Timothy S. Gross

United States Fish and Wildlife Service: Publications

The central Platte River Valley provides crucial staging habitat for the endangered whooping crane (Grus americana) and the mid-continent population of sandhill cranes (Grus canadensis). Platte River flow depletions and the conversion of native wet meadows for agriculture and other purposes has decreased the cranes natural habitat in the central Platte River Valley, and waste corn now makes up most of the cranes diet while they are in the Valley.

The purpose of this research was to measure organochlorine, elemental contaminant, and pesticide exposure to sandhill cranes from the central Platte River Valley, and to evaluate their reproductive condition. Pesticides …

A Survey Of Elemental Contaminants And Organochlorines At North Platte National Wildlife Refuge, Nebraska, 1993., Matthew S. Schwarz, Brent J. Esmoil, Timothy E. Fannin

United States Fish and Wildlife Service: Publications

The North Platte National Wildlife Refuge (Refuge) is located 8 miles northeast of Scottsbluff, in Nebraska's Panhandle. It was established by Executive Order in 1916, and was managed by the Bureau of Reclamation (BR) until 1986, when primary jurisdiction was granted to the U.S. Fish and Wildlife Service (Service). The 2,909 acre Refuge includes three reservoirs: 1) Lake Alice, 2) Winters Creek Lake, and 3) Lake Minitare (Figure 1). Water levels in all three reservoirs are managed by BR for irrigation and Lake Minitare is managed as a State Recreation Area under a lease agreement with the Nebraska Game and …

Secondary Lead Poisoning In Golden Eagle And Ferruginous Hawk Chicks Consuming Shot Black-Tailed Prairie Dogs, Thunder Basin National Grassland, Wyoming, Robert M. Stephens, Aran S. Johnson, Regan Plumb, Kimberly K. Dickerson, Mark C. Mckinstry, Stanley H. Anderson

United States Fish and Wildlife Service: Publications

Recreational shooting of black-tailed prairie dogs (Cynomys ludovicianus) is a common activity at Thunder Basin National Grassland (TBNG), Wyoming. The prairie dog carcasses left in the area are scavenged by coyotes (Canis latrans), raptors, and other animals. These scavengers are susceptible to lead (Pb) poisoning if they consume Pb bullet fragments or Pb shot when scavenging the shooter-killed prairie dogs. In 2000, a local rehabilitator noted an increase of Pb poisoning cases in raptors (L.Layton, pers. comm. 3/30/01) from the area. We collected several shooter-killed prairie dog carcasses from TBNG for determining if Pb fragments remained …

Gambelia Wislizenii (Long-Nosed Leopard Lizard). Arboreal Behavior., Stephen C. Adolph, Sean P. Fogarty '06

All HMC Faculty Publications and Research

In the North American southwest, leopard lizards (genus Gambelia) are characteristically ground dwelling (Stebbins 2003. A Field Guide to Western Reptiles and Amphibians, 3rd ed., Houghton-Mifflin, New York. 533 pp.; Smith 1946. Handbook of Lizards, Comstock Publishing Co., Ithaca, New York. 557 pp.). In G. wislizenii, climbing is not mentioned in several substantive ecological studies of this species (Parker and Pianka 1976. Herpetologica 32:95-114; Tanner and Krogh 1974. Herpetologica 30:63-72), and to our knowledge, only a few seconds exist of climbing in this species. Clark (1974. Trans. Kansas Acad. Sci. 77:68) observed a G. wislizenii perched 30 cm …

Responses Of Coccidia-Vaccinated Broilers To Essential Oil Blends Supplementation Up To Forty-Nine Days Of Age, E. O. Oviedo Rondon, S. Clemente-Hernandez, P. Williams, R. Losa

Faculty Publications

Coccidiosis control may become a greater problem as the use of growth-promoting antibiotics (GPA) and ionophores declines. Vaccination with live oocysts may turn into a popular alternative to the use of coccidiostats in broilers, although cocci vaccination is frequently linked to temporary lower performance in young flocks. This experiment evaluates the dietary supplementation of 2 specific essential oil (EO) blends (Crina Poultry and Crina Alternate), either as alternatives to GPA and ionophores (BMD + Coban) or as feed additives that help to improve the performance of cocci-vaccinated broilers. Live performance and lesion scores were observed. These 2 specific EO blends …

Effects Of Weaning Date And Retained Ownership On Cow And Calf Performance And Forage Disappearance In Spring Calving Beef Systems, Doug G. Landblom, Hubert H. Patterson, Pat Johnson, Roger Gates, Steve Paisley, Doug Young

South Dakota Beef Report, 2005

Researchers in North Dakota, South Dakota and Wyoming are working together to evaluate the effect of weaning calves 75 days earlier than normal and are following the calves through finishing. This report summarizes accomplishments so far. Briefly, weaning calves 75 days early (mid-August) has improved cow weight and condition score compared to cows whose calves were weaned normally (early-November). Native range forage disappearance has tended to be lower when calves were weaned early. After weaning, backgrounded early weaned steers grew faster and were more efficient. However, early weaned steers required 61 more days on feed to reach final harvest.

Evaluation Of Performance And Costs Of Two Heifer Development Systems, Robin R. Salverson, Hubert H. Patterson, George A. Perry, Doug Young, Matt L. Gibson

South Dakota Beef Report, 2005

Early weaned (EW) heifers must be developed for a longer period of time usually resulting in increased development costs. Developing EW heifers on native range may reduce these costs. Dried distillers grains plus solubles (DDGS) offers protein and energy that compliment native forages for developing heifers. The objective of this study was to evaluate the performance and costs of two heifer development systems in northwest South Dakota. Sixty-five nulliparous crossbred beef heifers were randomly allotted to one of two systems: 1) heifers (n=33) weaned at 132 d of age (461 lb) and developed on range with a DDGS supplement (1.8 …

Fishes Of The Pine Bluff Arsenal, Jefferson County, Arkansas, Henry W. Robison

Journal of the Arkansas Academy of Science

A survey of the fishes of the Pine Bluff Arsenal (PBA) located in Jefferson County, Arkansas was initiated in February 1999 and continued until October 1999 with several supplemental collections made in 2000. A total of 3,396 fishes was taken in 81 collections on the PBA and revealed 59 species distributed in 17 families and 36 genera. The most abundant fishes collected were Dorosoma petenense, Gambusia affinis, Labidesthes sicculus, Notemigonus crysoleucas, and Lepomis marginatus.