Life Sciences Commons^™

Forage News [2003-08], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forages at KCA
• Seeding Cool Season Grasses
• Tall Fescue Response to Nitrogen Fertilization for Stockpiled Grazing
• Extending the Grazing Season
• Round Bale Silage
• Does Grazing Management Impact the Production and Winter Survival of Annual Ryegrass?
• Upcoming Events

Forage News [2003-07], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• UK All Commodity Field Day
• Intensive Hay Conditioning Systems
• South Central Kentucky Agriculture Field Day
• Fructans in Pasture Grasses and Implications for Equine Laminitis in Kentucky
• Hybrid and Protein Supplement Affect Gains of Cattle Grazing Mature Corn
• Crop Options for an Expanding Dairy Farm in Wisconsin
• Kentucky Ranks in Top 20
• Upcoming Events

Forage News [2003-06], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Plant and Soil Sciences Field Day
• Kentucky Grazing School
• KFGC Elects New Board Members
• Hay Temperature
• The Influence of Solar Radiation and Vapor Gradient on Alfalfa Hay Drying Rates
• Approximate Diet Selection of Grazing Animals When Offered in a Mixed Pasture
• Designer Milk
• Upcoming Events

Is Hp1 An Rna Detector That Functions Both In Repression And Activation?, Rebecca Kellum

Biology Faculty Publications

Heterochromatin is defined as regions of compact chromatin that persist throughout the cell cycle (Heitz, 1928). The earliest cytological observations of heterochromatin were followed by ribonucleotide labeling experiments that showed it to be transcriptionally inert relative to the more typical euchromatic regions that decondense during interphase. Genetic studies of rearrangements that place euchromatic genes next to blocks of heterochromatin also pointed out the repressive nature of heterochromatin (Grigliatti, 1991; and references therein). The discovery of the heterochromatin-enriched protein heterochromatin protein 1 (HP1) by Elgin and co-workers in the mid-1980s suggested that the distinct cytological features of this chromatin may be …

Forage News [2003-05], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Losses and Drying Rates of Different Conditioners
• UK Robinson Station Host All Commodity Field Day
• Impact of Alfalfa Cutting Height on Yield and Quality
• Kentucky Plays Prominent Role at National Level
• Cool Season Pastures and Meat Goat Interaction
• Relationship Between Yield and Quality
• Upcoming Events

Assessing The Benefits Of Misting–Cooling Systems For Growing/Finishing Swine As Affected By Environment And Pig Placement Date, Thomas C. Bridges, Larry W. Turner, Richard S. Gates, Douglas G. Overhults

Biosystems and Agricultural Engineering Faculty Publications

The NCPIG swine growth model was used to evaluate swine growth performance for Wilmington, North Carolina; Bardstown and Mayfield, Kentucky; and Oklahoma City, Oklahoma as influenced by the use of a misting–cooling system. Five pig placement dates (Julian days 106, 126, 146, 166, and 186) were evaluated for each location using 22 years of weather data (1978–1999). The use of a misting system, while quite variable, was found to be generally profitable, reducing the length of the time to reach market weight. As the placement date increased, the average return to misting ($/pig/year) decreased from $8.12 to $1.98 for Oklahoma …

Addressing The Decline In Reproductive Performance Of Lactating Dairy Cows: A Researcher’S Perspective, William J. Silvia

Animal and Food Sciences Faculty Publications

No abstract provided.

Forage News [2003-04], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forage News Loss – College of Agriculture Gain
• Forage News Reflections
• Kentucky Grazing School
• Forages for Goats
• The Meat Goat and Cattle Consortium
• Upcoming Events

Forage News [2003-03], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Central Kentucky Alfalfa Conference
• Congratulations Alfalfa Award Winners
• 23^RD Kentucky Alfalfa Conference
• Congrats to Kentucky Alfalfa Hay Contest Winners
• Forage Variety Test Reports Available Locally and on Web
• Nitrogen on Grass
• Spring Oats
• I Can’t Wait for Lafayette, LA
• Kentucky Grazing School
• Upcoming Events

Freedom! Red Clover—A New Variety For Kentucky, Norman L. Taylor, Michael Collins

Agriculture and Natural Resources Publications

Freedom! is a new variety of red clover developed by the Kentucky Agricultural Experiment Station and released in 2001. It is a medium red clover variety adapted to the same general region as Kenland, i.e., Kentucky and the central clover region of the United States.

Freedom!—so named because of its freedom from pubescence (non-glandular hairs)—was developed to permit faster drying and to reduce dustiness of hay. It is especially recommended for hay because it is less dusty than other varieties. Less dustiness should result in improved air quality that may be associated with reduced health hazard for both humans and …

Pc–Based Data Acquisition For A Solid Substrate Cultivation Deep Bed Reactor, Mari S. Chinn, Sue E. Nokes, Richard S. Gates

Biosystems and Agricultural Engineering Faculty Publications

This work describes an instrumentation and data acquisition system designed for a deep bed reactor used to cultivate Trichoderma longibrachiatum on wheat bran. The system allowed on–line measurements of substrate temperature, oxygen concentration within the reactor headspace, relative humidity and temperature of the inlet air, and inlet airflow rates while maintaining aseptic conditions and without disturbing the cultivation process. An error analysis for the instrumentation and data acquisition equipment was completed and provided insight into the reliability of the sensor readings. The collected data provided quantitative information about the reactor system dynamics which can be used to evaluate and apply …

Alfalfa Disease Management, Paul Vincelli

Kentucky Alfalfa and Stored Forage Conference

Alfalfa can be a vigorous and productive forage crop for Kentucky farmers. Like all farm crops, however, alfalfa is subject to infectious diseases that can limit forage production. Managing these diseases is an important part of economical alfalfa production.

Weed Management In Alfalfa, Jonathan D. Green

Kentucky Alfalfa and Stored Forage Conference

The importance of weed control in forage production should not be overlooked, especially when you consider the high investment associated with alfalfa and other legume forages. Weed management strategies in forage legumes should first focus on cultural practices and then on chemical weed control options. Vigorous, densely growing forage legume stands tend to have fewer weed problems. Thus, cultural and management practices that promote a highly competitive forage stand help prevent many weed problems. These practices include: 1) liming and fertilizing fields based on soil test recommendations; 2) seeding well-adapted, vigorous, and long-lived varieties; 3) buying weed-free seed; 4) cutting …

Producing Quality Alfalfa Hay, Jimmy C. Henning, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Hay is one of the most versatile of stored forages in that (1) it can be kept for long periods of time with little loss of nutrients if protected from weather; (2) a large number of crops can be successfully used for hay production; (3) it can be produced and fed in small or large amounts; (4) it can be harvested, stored and fed by hand or the production and feeding can be completely mechanized; and (5) hay can supply most nutrients needed by many classes of livestock. Hay is, therefore, the most commonly used stored feed on most farms.

Forage Testing & Marketing Program, Allen Johnson

Kentucky Alfalfa and Stored Forage Conference

Two thousand and three marks the 141^th year for the Kentucky Department of Agriculture for testing forages. We continue to strive to offer a quality service to producers at the very least cost possible. After all these years we continue to charge only $10.00 per lot or cutting and have expanded our services to try to meet the needs of our forage and livestock producers. In January 2002, we introduced the testing of haylages and have expanded this to cover most of the haylage crops harvested in Kentucky. In cooperation with The University of Kentucky Extension Service, the department …

Buying And Selling Alfalfa Hay, Garry D. Lacefield, Jimmy C. Henning

Kentucky Alfalfa and Stored Forage Conference

Alfalfa hay is an important agricultural product. Although often fed on the farms where it is produced, much alfalfa hay is also sold as a cash crop. It often constitutes a major source of income for those who sell it, or a major expense for those who buy it. Such transactions involve billions of dollars nationwide each year.

Alfalfa Haylage And Silage, Michael Collins

Kentucky Alfalfa and Stored Forage Conference

Even with extended grazing systems, typical winter weather conditions in Kentucky necessitate the production of some stored forage for livestock during winter. Hay has traditionally been the way of storing this forage. However, when rain occurs during haymaking operations, the losses can be severe both in yield and in forage quality. Harvest losses are greatest for very dry forage and are low for very wet material like direct cut silage. Silage offers an opportunity to avoid most of the rain damage during harvest because the crop only needs to be left out overnight in most cases to be ready to …

Alfalfa And Mrls: What We Know After One Year Of Testing, Jimmy C. Henning, Wayne Long

Kentucky Alfalfa and Stored Forage Conference

The onset of mare reproductive loss syndrome in April 2001 in Kentucky lead to much speculation about its cause. Some of these initial 'suspects' included the ergot alkaloids of tall fescue, potential cyanide content of white clover, wide Calcium/Potassium ratios in pasture, fungal mycotoxins and the presence of certain poisonous plants. Certain consultants also indicated that no one should purchase or feed any Kentucky hay in 2001. However, these statements were not based on any hard information, just one person's opinion. But great damage was done to the confidence in Kentucky grown hay.

Alfalfa, The Queen Of Forage Crops — Reflections After Sixty Years Experience With The Crop, Warren C. Thompson

Kentucky Alfalfa and Stored Forage Conference

Yes, it is true I have been involved with alfalfa for 60 years and then some. Fact is I was fortunate enough to pick the World's best forage on which to base much of my career about the same time I fell in love with and married the best lady I ever knew. Betty has stuck with me through these crazy wonderful years. She was largely responsible for matters at home and raising the family. She managed our family and home while I was on the move trying to encourage maybe even coerce farmers in Kentucky and then over the …

Alfalfa For Summer Grazing, Jason Sandefur

Kentucky Alfalfa and Stored Forage Conference

Jason manages the Berle Clay Farm in Paris, Kentucky. The farm has been in the Clay family since the 1770's. The Homestead was built in 1778.

The farming operation consist of approximately 680 acres of orchardgrass-clover, 300 acres of orchardgrass-alfalfa, 210 acres of tall fescue-clover, 100 acres of crops, 13 acres of tobacco and 70 acres in roads, buildings, etc.

Advances In Developing Better Alfalfa Varieties, Jim Moutray

Kentucky Alfalfa and Stored Forage Conference

Alfalfa breeders continue to actively pursue the development of varieties that will bring more benefits to farmers. Yield and better persistence are our highest priorities. Other traits under selection can make alfalfa easier and cheaper to grow, better and safer for livestock and more attractive to livestock.

The goal of this paper is to update you on the types of alfalfa research going on in the U.S., time tables on when you may expect to see these new developments and how they may help you in your operation.

Alfalfa Hay Quality: Terms And Definitions, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

At the 22^nd Kentucky Alfalfa Conference we discussed the relationship among Alfalfa - Yield-Quality-Persistence. In our presentation, we indicated that all three components must be considered for best management of alfalfa stands. Over the past week, I have looked through the past twenty-two years of Alfalfa Conference Proceedings. It's interesting, but not surprising that we have focused far more attention on yield than on quality and/or persistence.

Alfalfa yield (quantity) and quality are both important; however, it is easier for producers to recognize problems associated with quantity than quality because quantity can be easily assessed visually. Thus, forage quantity …

Foreword [2003], Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

This is the front matter of the proceedings.

Forage News [2003-02], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Cave City – Here We Come
• Forages at KCA
• Hard Seed in Alfalfa
• Large Baler Research and Storage Ideas
• Pasture Renovation
• Heart of America Grazing Conference
• Upcoming Events

Hiv Protease Inhibitors Promote Atherosclerotic Lesion Formation Independent Of Dyslipidemia By Increasing Cd36-Dependent Cholesteryl Ester Accumulation In Macrophages, James Dressman, Jeanie Kincer, Sergey V. Matveev, Ling Guo, Richard N. Greenberg, Theresa Guerin, David Meade, Xiang-An Li, Weifei Zhu, Annette M. Uittenbogaard, Melinda E. Wilson, Eric J. Smart

Physiology Faculty Publications

Protease inhibitors decrease the viral load in HIV patients, however the patients develop hypertriglyceridemia, hypercholesterolemia, and atherosclerosis. It has been assumed that protease inhibitor–dependent increases in atherosclerosis are secondary to the dyslipidemia. Incubation of THP-1 cells or human PBMCs with protease inhibitors caused upregulation of CD36 and the accumulation of cholesteryl esters. The use of CD36-blocking antibodies, a CD36 morpholino, and monocytes isolated from CD36 null mice demonstrated that protease inhibitor–induced increases in cholesteryl esters were dependent on CD36 upregulation. These data led to the hypothesis that protease inhibitors induce foam cell formation and consequently atherosclerosis by upregulating CD36 and …

Kentucky Water Resources Research Institute Annual Technical Report Fy 2002, Kentucky Water Resources Research Institute, University Of Kentucky

KWRRI Annual Technical Reports (USGS’s 104b Grant Program)

The FY 2002 Annual Technical Report for Kentucky consolidates reporting requirements of the Section 104(b) base grant award in a single technical report that includes: 1) a synopsis of each research project supported during the period, 2) a list of related reports, 3) a description of information transfer activities, 4) a summary of student support during the reporting period, and 5) notable achievements and awards during the year.

Forage News [2003-01], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Happy New Year!
• Regional Grazing Conference Coming to Hannibal, Missouri
• Oops!!!
• Organic Agriculture Depends on Inorganic Nutrients
• 23^RD Alfalfa Conference Set for February 20
• Upcoming Events

2002-2003 Kentucky Canola Variety Performance Test, Greg Schwab, Lloyd W. Murdock, James H. Herbek, Chad Lee, David Van Sanford

Agronomy Notes

Winter canola is a crop that is well suited for Kentucky’s climate and crop rotation, but production peaked at 20,000 acres in 1989and has since declined mainly due to winter hardiness concerns. Changes in the 2002 farm bill have once again caused farmers to consider converting some of their wheat acreage to canola production. For the past several years, plant breeders have been working to improve canola’s winter hardiness and have released several varieties that seem to be better suited for Kentucky’s variable winters than the varieties grown in the late 1980s. A study was initiated in the fall of …

Anorexia, Bulimia, And Crayfish (Or, Why I Study The Pharmacology Of Serotonin Receptors In Glutamatergic Invertebrate Systems), Garrett Sparks

Kaleidoscope

No abstract provided.

An Approach To The Measurement Of Sexual Behavior In The Bull (Bos Taurus) Using Variable Female Stimulus Conditions, John Denver Bailey

University of Kentucky Doctoral Dissertations

Most researchers studying sexual behavior of the bull have adopted the practice of severely restraining and sedating female stimuli, utilizing so-called "service stanchions" and quantifying behavioral events expressed by each bull. Based on these observations, bulls are classified as having high, medium, or low libido and ranked according to their ability to "service" the inanimate stimuli. It has been assumed that these methods represent appropriate measurements of reproductive behavior that will be expressed in a natural mating scenario and that bull sexual behavior can be studied in a manner that is independent of the context of the female. Hence, conventional …