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1999

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Relative Abundance Of Postlarval And Juvenile Penaeid Shrimps In Submerged Aquatic Vegetation And Emergent Marsh Habitats, Jeffrey C. Howe, Richard K. Wallace Dec 1999

Relative Abundance Of Postlarval And Juvenile Penaeid Shrimps In Submerged Aquatic Vegetation And Emergent Marsh Habitats, Jeffrey C. Howe, Richard K. Wallace

Gulf of Mexico Science

Postlarval and juvenile densities of Farfantepenaeus aztecus, Farfantepenaeus duorarum, and Litopenaeus setiferus were compared among emergent marsh (Spartina alterniflora), submerged aquatic vegetation (Ruppia maritima), and adjacent unvegetated areas at the east end of Fowl River along Mobile Bay, AL. A total of 108 samples were collected between July 1994 and Nov. 1995, of which 76 samples contained at least one of the three penaeid species. Of the 507 penaeid shrimp collected, 303 (60%) were collected in the R. maritima beds, 152 (30%) in the S. alterniflora, and 52 (10%) in the sand/mud habitat. …

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Mammal Research In Southern Africa: Present Patterns And Future Priorities, Johan T. Du Toit, L. S. Broomhall Dec 1999

Mammal Research In Southern Africa: Present Patterns And Future Priorities, Johan T. Du Toit, L. S. Broomhall

Wildland Resources Faculty Publications

We conducted a survey to identify present patterns and future priorities for mammal research in southern Africa (countries including and southwards of Angola, Zambia and Tanzania). Two sets of peer-reviewed journals were scanned for papers on southern African mammal research over the period 1988-1998: one set comprised five journals published in South Africa; the other comprised 10 journals published abroad. For the same period we reviewed titles of M.Sc. and Ph.D. dissertations completed in zoology departments of South African universities. A questionaire was administered by e-mail to. 126 researchers active in mammal research in southern Africa, concurrently with a separate …

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Feasibility Study For The Establishment Of Port Waste Reception Facility In Context Of Ports In South Asian Countries, Abu Hena Mohammad Mamun Dec 1999

Feasibility Study For The Establishment Of Port Waste Reception Facility In Context Of Ports In South Asian Countries, Abu Hena Mohammad Mamun

World Maritime University Dissertations

No abstract provided.

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The Murray Ledger And Times, December 29, 1999, The Murray Ledger And Times Dec 1999

The Murray Ledger And Times, December 29, 1999, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

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The Weekly Challenger, December 25, 1999, The Weekly Challenger, Et Al Dec 1999

The Weekly Challenger, December 25, 1999, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The December 25, 1999, issue of The Weekly Challenger.

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12/23/1999 - Eastern Offers Courses In Champaign.Pdf, University Marketing And Communications Dec 1999

12/23/1999 - Eastern Offers Courses In Champaign.Pdf, University Marketing And Communications

1999

No abstract provided.

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December 22nd 1999, Hispanic News Dec 1999

December 22nd 1999, Hispanic News

Inland Empire Hispanic News

No abstract provided.

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Bjc Today Dec 1999

Bjc Today

BJC Today

No abstract provided.

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The Weekly Challenger, December 18, 1999, The Weekly Challenger, Et Al Dec 1999

The Weekly Challenger, December 18, 1999, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The December 18, 1999, issue of The Weekly Challenger.

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150th Commencement, Winter Dec 1999

150th Commencement, Winter

Commencement Programs

No abstract provided.

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Commencement Convocation Exercises - December 1999, Prairie View A&M University Dec 1999

Commencement Convocation Exercises - December 1999, Prairie View A&M University

Commencement and Convocation Exercises

No abstract provided.

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Winter Commencement: December 17, 1999, University Of North Dakota Dec 1999

Winter Commencement: December 17, 1999, University Of North Dakota

UND Commencement Programs

UND Winter Commencement program from December 17, 1999.

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Putative Pheromones In The Urine Of Male Moose: Evolution Of Honest Advertisement?, Chris Linda Whittle Dec 1999

Putative Pheromones In The Urine Of Male Moose: Evolution Of Honest Advertisement?, Chris Linda Whittle

Biological Sciences

I tested hypotheses about how olfactory communication is related to mating behavior in Alaskan moose (Alces alces gigas). Males dig rutting pits where urine is deposited to which females strongly respond. Consequently, male urine may contain primer pheromones that synchronize estrus of females. Urine samples were collected from captive moose on the Kenai Peninsula, Alaska. Samples included those from the mating season and from the nonrutting period for two adult males, one yearling male, and one male and one female calf. After pH adjustment, samples were extracted with methylene chloride to yield 3 fractions (acidic, neutral, and basic), which were …

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Studies On The Ecological Physiology Of Porphyra Abbottae And Porphyra Torta (Rhodophyta): Development Of New Species For Mariculture In Alaska, Jan Marie Conitz Dec 1999

Studies On The Ecological Physiology Of Porphyra Abbottae And Porphyra Torta (Rhodophyta): Development Of New Species For Mariculture In Alaska, Jan Marie Conitz

Fisheries

Environmental factors affecting the distribution and growth of Porphyra abbottae and Porphyra torta were studied in a research project on the feasibility of nori mariculture in southeast Alaska. In situ abundance of Porphyra abbottae was compared at sites in Sitka Sound, Cross Sound and Chatham Strait. Growth of laboratory cultured Porphyra torta gametophytes was studied in response to nutrients, salinity, crowding and substrate. The seasonal progression of abundance in Porphyra abbottae varied between study sites, with associated differences in water motion and temperature. Double sampling techniques improved accuracy of in situ abundance estimates. Germination and initial growth of cultured Porphyra …

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The Fecal Porphyrin Profile In River Otters As A Biomarker Of The Effects Of Oil Exposure, Christopher Taylor Dec 1999

The Fecal Porphyrin Profile In River Otters As A Biomarker Of The Effects Of Oil Exposure, Christopher Taylor

Marine Biology

The use of profiles of fecal porphyrins in river otters as a biomarker of the effects of oil exposure was investigated. A high-performance liquid chromatography method was developed to quantify porphyrins and compared to a spectrofluorometric method. Profiles of porphyrins were characterized in fecal samples collected at oiled and nonoiled areas in Prince William Sound following the Exxon Valdez oil spill. Levels of porphyrins in fecal samples indicated a temporal pattern of physiological stress and recovery similar to that described by other biomarker studies. Profiles of porphyrins were also characterized in fecal samples from southeast Alaska and contributed to the …

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Secondary Reproductive Strategies In Pacific Black Brant (Branta Bernicla Nigricans), Pamela A. Svete Dec 1999

Secondary Reproductive Strategies In Pacific Black Brant (Branta Bernicla Nigricans), Pamela A. Svete

Biological Sciences

Waterfowl are known to use secondary reproductive strategies, both extra-pair copulations and intraspecific brood parasitism, to increase fitness. We used five polymorphic microsatellite loci to determine extra-pair paternity and nest parasitism in 30 nests of Pacific Black Brant geese (Branta bernicla nigricans) containing 108 offspring. Fourteen of the 30 nests contained offspring that were not genetically related to one or both of the attending adults: 6.5% (7/108) of the offspring resulted from extra-pair copulations (EPC); 13.9% (15/108) of the offspring resulted from intraspecific brood parasitism (IBP). All offspring resulting from EPCs were produced during the peak period of nest initiation. …

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Clemson Commencement Program, December 1999, Clemson University Dec 1999

Clemson Commencement Program, December 1999, Clemson University

Clemson Commencement Programs

No abstract provided.

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Effect Of Smoking On The Body Mass Index-Mortality Relation: Empirical Evidence From 15 Studies, V. Hawthorne, V. Hawthorne, D. Kozarevic, N. Vojvodic, C. R. Gillis, D. Hole, C. Hart, T. Jorgensen, T. Thomsen, M. Davidson, U. Goldbourt, S. Yaari, G. Cao, R. Cooper, R. Durazo-Arvizu, Z. Li, Y. Liao, D. Mcgee, T. E. Prewitt, C. Sempos Dec 1999

Effect Of Smoking On The Body Mass Index-Mortality Relation: Empirical Evidence From 15 Studies, V. Hawthorne, V. Hawthorne, D. Kozarevic, N. Vojvodic, C. R. Gillis, D. Hole, C. Hart, T. Jorgensen, T. Thomsen, M. Davidson, U. Goldbourt, S. Yaari, G. Cao, R. Cooper, R. Durazo-Arvizu, Z. Li, Y. Liao, D. Mcgee, T. E. Prewitt, C. Sempos

Faculty Publications

The authors examined the impact of smoking status on the relation between body mass index (weight (kg)/height (m)2) and mortality across a group of 15 diverse observational studies. The studies included a heterogeneous sample of national samples, cohort studies with mortality follow-up, and clinical trials. Consideration of the data according to natural strata resulted in the formation of 42 analytic cohorts. The authors examined survival through the end of follow-up for each study, as influenced by body mass index, age, and current smoking status at baseline, using a proportional hazards model to describe the relation between body mass index and …

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Genetic Predictors Of Reproduction, Kent Andersen Dec 1999

Genetic Predictors Of Reproduction, Kent Andersen

Range Beef Cow Symposium

Genetic predictions in the form of expected progeny differences (EPDs) represent the beef industry's most powerful source of information for selection and genetic improvement. While EPDs are widely available for traits associated with calving ease, growth, milk and carcass traits, EPDs for reproductive traits are limited. Given the relative economic importance, development of EPDs for reproductive traits should be a priority for the beef industry. Fortunately, recent breakthroughs in analytical procedures have opened the door for potential development of genetic predictions for reproductive traits.

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Some Effects Of Feeding Supplemental Fat To Beef Cattle, R. A. Bellows Dec 1999

Some Effects Of Feeding Supplemental Fat To Beef Cattle, R. A. Bellows

Range Beef Cow Symposium

Meeting nutrient requirements of the replacement of heifer and the pregnant or lactating heifer and cow is of critical importance in assuring optimum reproductive performance. It is well recognized that these nutrients include protein, energy, minerals, vitamins, dry matter, and water. Recent research has indicated adequate fat may be an additional nutrient that needs to be present in the diet. This presentation will review some of our recent work on the effects of feeding additional fat on potential cold tolerance in the newborn calf, development of the replacement heifer, rebreeding of the lactating dam, and weaning weight of her calf.

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Going Home To The Family Ranch, Sara F. Hebbert Dec 1999

Going Home To The Family Ranch, Sara F. Hebbert

Range Beef Cow Symposium

Going home to the family ranch is a multi-faceted decision to be made following careful analysis of the whole picture. It is important to identify all the players, choose the right timing, define individual roles, and measure what is most valuable. Combined with these factors is the need to establish partnerships with unlikely partners. The plague of urban sprawl threatening every ag enterprise in the nation makes it continually important that we in the beef industry establish a positive relationship with those not associated with ag. The information that follows is a combination of personal history and observation.

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Blue Ribbon Commission Recommendations Executive Summary – November 1999, Lynn Cornwell Dec 1999

Blue Ribbon Commission Recommendations Executive Summary – November 1999, Lynn Cornwell

Range Beef Cow Symposium

Purpose: The NCBA Board approved and President George Swan appointed the Blue Ribbon Commission to create a stronger NCBA for today and tomorrow by establishing recommendations for:

• Commitment to the producer

• State-national partnership and membership

• Governance and representation

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Managing Forage Resources For Bigger Profits, Kit Pharo Dec 1999

Managing Forage Resources For Bigger Profits, Kit Pharo

Range Beef Cow Symposium

Our ranch is known as Pharo Cattle Company and is located eight miles north of Cheyenne Wells, which is on the central high plains of Eastern Colorado. This is short-grass country with very limited and unpredictable rainfall. We have a commercial cow herd, as well as a registered cow herd. Our seedstock program consists of Red Angus, Black Angus, Tarentaise, and Composites. Our Composite cattle are 50% Tarentaise, 30% Red or Black Angus and 20% Hereford.

Since our ranch provides our only source of income, our ranching practices must be both sustainable and profitable. Recently I've heard a lot of …

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Reducing Harvesting Costs Using Windrow Grazing, Weldon V. Thomson Dec 1999

Reducing Harvesting Costs Using Windrow Grazing, Weldon V. Thomson

Range Beef Cow Symposium

Dr. Robert Taylor, of Colorado State University, at the 1995 NCA meeting stated, "…after the current cycle 30% of today’s beef producers will not be in business." A colleague, Paul Gehno, now with the King Ranch in Florida, once stated, "the industry that emerges from this down phase will be leaner, smaller and more competitive." Another quote, of which I am afraid I do not have the author states, "in times of change, learners inherit the earth while the learned find themselves beautifully equipped to work in a world that no longer exists."

We live in a world of change …

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Complementing A Forage Program With Annual Forages, Ken Remmington Dec 1999

Complementing A Forage Program With Annual Forages, Ken Remmington

Range Beef Cow Symposium

Economists tell us that in a mature industry you must be a low cost producer to survive. The meat industry is ending the century much more mature than it began. Sophisticated production of pork and poultry with the benefit of cheap grain is putting pressure on beef producers. The long-term trend in grain prices is downward because the cost of producing grain is being reduced by three ongoing trends. The continuing enrichment of the atmosphere by CO2 and other greenhouse gases is crop production friendly despite what you may have heard of few years back. Secondly, bio-tech seeds are increasing …

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Imminent Commercialization Of Sexed Bovine Sperm, J. L. Schenk, G. E. Seidel Jr. Dec 1999

Imminent Commercialization Of Sexed Bovine Sperm, J. L. Schenk, G. E. Seidel Jr.

Range Beef Cow Symposium

Cattle breeders demand products and services that improve efficiency and maximize profits. Research and development for these products, once done primarily in academic settings, now is occurring more within the private corporate sector who now fund research that was previously funded from public sources. These products often are patented and licensed to individual companies. Product availability is hastened, but sometimes at higher costs. Sex-specific sperm soon will be available to the cattle industry for use in high profile, genetically elite herds. Widespread availability of sex-specific sperm for commercial herds should follow within 2 years.

Sex-specific sperm for use with artificial …

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Vaccines And Dewormers – Do We Need Them All?, Dale M. Grotelueschen Dec 1999

Vaccines And Dewormers – Do We Need Them All?, Dale M. Grotelueschen

Range Beef Cow Symposium

Consumers are the ultimate beneficiaries of improved animal health. Costs and potential benefits from use of vaccines and dewormers affect returns to individual producers or operations as well as the beef industry as a whole. Vaccines that positively influence average daily gain, improve carcass quality, lower costs of production and improve efficiency, and that reduce treatments, decreasing reliance on antibiotics, and that decrease treatment costs contribute to success of the beef industry.

Consideration for use by individual operations often involves shorter time perspectives, especially if cattle are marketed or if products administered affect only production systems on the premises. When …

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Lifetime Effects Of Respiratory And Liver Disease On Cattle, Bill Epperson Dec 1999

Lifetime Effects Of Respiratory And Liver Disease On Cattle, Bill Epperson

Range Beef Cow Symposium

In cattle, the respiratory and gastrointestinal tracts are the main systems affected with disease. Bovine respiratory disease (BRD) contributes the majority of illness and death loss in the feedlot segment. Historically, 15-45% of feedlot cattle have been affected with BRD, with 1-5% of total cattle placed dying of BRD (Kelly 1986). Respiratory disease, alone, accounts for 44.1% of deaths in beef feedlot cattle (Vogel 1994). Apart from death loss, the Texas Ranch to Rail Program has suggested that clinical disease (most of which is BRD), even if treated successfully, results in treatment cost ($37.90/affected), decreased average daily gain (0.21 lb/d, …

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Factors To Consider When Buying And Managing Bulls, Ivan G. Rush, Connee Quinn Dec 1999

Factors To Consider When Buying And Managing Bulls, Ivan G. Rush, Connee Quinn

Range Beef Cow Symposium

When considering purchasing a sire price often becomes the first consideration. My father once said the most expensive bull he ever purchased was the one he bought the cheapest. If replacement heifers are retained in the herd, 80-90% of the genetic change in a herd will be made by the bull's genetic makeup. Thus, as leading ranchers know, making decisions in selecting bulls is very important. Management of the bull after he arrives at the farm or ranch is also very important. The best genetic package is of little value unless the bull is managed to serve a large number …

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Consideration Of Weaning Time, Implanting Strategies And Carcass Data On Cow-Calf Decisions, Doug L. Hixon Dec 1999

Consideration Of Weaning Time, Implanting Strategies And Carcass Data On Cow-Calf Decisions, Doug L. Hixon

Range Beef Cow Symposium

As the beef industry becomes more focused on the consumer, various management practices must be evaluated to determine what lasting effects they might have on final consumer product. In the past, we have evaluated the effects of management decisions on performance and measured differences in pounds produced. However, the dynamic nature of the beef industry and the necessity for sustainability requires that we measure performance in dollars rather than pounds. I often ask students to describe their ideal beef animal in eleven words or less. I believe the answer to that question is "the one that makes the most money …

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