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Articles 1 - 13 of 13

Full-Text Articles in Life Sciences

The Effect Of Prostaglandin Inhibitor On Pregnancy Rates Of Heifer Embryo Transfer Recipients, Jared William Mcnaughtan Dec 2004

The Effect Of Prostaglandin Inhibitor On Pregnancy Rates Of Heifer Embryo Transfer Recipients, Jared William Mcnaughtan

Theses and Dissertations

Manipulation of the reproductive tract results in increased levels of prostaglandin, which may, in turn, reduce pregnancy rates in embryo recipients. Administration of a prostaglandin inhibitor prior to embryo transfer improves pregnancy rates in cows. Embryo transfer into heifers is more difficult and often requires additional manipulation of the uterus. This study was designed to determine whether administration of the prostaglandin inhibitor, flunixin meglumine, immediately prior to embryo transfer increases pregnancy rates in heifers. Heifers (n=466) were divided into two equal groups based on BCS (range=6-7) and weight (range=256-455). Estrus was synchronized in heifers by giving two ...


Heritability Estimates For Carcass Traits Of Cattle: A Review, Angel Rios Utrera, L. Dale Van Vleck Sep 2004

Heritability Estimates For Carcass Traits Of Cattle: A Review, Angel Rios Utrera, L. Dale Van Vleck

Faculty Papers and Publications in Animal Science

We present estimates of heritability for carcass traits of cattle published in the scientific literature. Seventy-two papers published form 1962 to 2004, which reported estimates of heritability for carcass traits, were reviewed. The unweighted means of estimates of heritability for 14 carcass traits by slaughter end point (age, weight, and fat depth) were calculated. Among the three end points, carcass weight, backfat thickness, longissimus muscle area, and marbling score were the carcass traits with the most estimates of heritability (56≤n≤66). The averages for these traits indicate that they are similarly and moderately heritable (0.40, 0.36, 0 ...


Gasp: Gapped Ancestral Sequence Prediction For Proteins., Richard J. Edwards, Denis C. Shields Sep 2004

Gasp: Gapped Ancestral Sequence Prediction For Proteins., Richard J. Edwards, Denis C. Shields

Molecular and Cellular Therapeutics Articles

BACKGROUND: The prediction of ancestral protein sequences from multiple sequence alignments is useful for many bioinformatics analyses. Predicting ancestral sequences is not a simple procedure and relies on accurate alignments and phylogenies. Several algorithms exist based on Maximum Parsimony or Maximum Likelihood methods but many current implementations are unable to process residues with gaps, which may represent insertion/deletion (indel) events or sequence fragments.

RESULTS: Here we present a new algorithm, GASP (Gapped Ancestral Sequence Prediction), for predicting ancestral sequences from phylogenetic trees and the corresponding multiple sequence alignments. Alignments may be of any size and contain gaps. GASP first ...


Pb1684-Dehorning Calves, The University Of Tennessee Agricultural Extension Service Jun 2004

Pb1684-Dehorning Calves, The University Of Tennessee Agricultural Extension Service

Animals/Livestock

Dehorning calves is a simple, cost-effective practice that adds value to feeder cattle. Feeder cattle that are either polled or have been de horned usually sell for $1.50 or $2.00 more per cwt. than those with horns when marketed.


Applying Principles Of Crossbreeding, Dale Zobell, C. Kim Chapman May 2004

Applying Principles Of Crossbreeding, Dale Zobell, C. Kim Chapman

All Current Publications

Crossbreeding can be a powerful tool to improve the productivity and profitability of a beef cattle operation when it is used correctly. This fact sheet explains considerations that need to be made for successful production and profitability.


Management Intensive Grazing Systems And The Environment, Rhonda Miller, Jennifer W. Macadam, Rich Koenig Apr 2004

Management Intensive Grazing Systems And The Environment, Rhonda Miller, Jennifer W. Macadam, Rich Koenig

Agriculture

No abstract provided.


Herd Efficiency And Profitability, Jesse Russell, D. R. Zobell Apr 2004

Herd Efficiency And Profitability, Jesse Russell, D. R. Zobell

All Current Publications

Raising beef cattle can be very rewarding. First, if you like raising cattle, maintaining your tie to the land, and seeing the product of your labors, it can truly be satisfying to see young calves in the spring, watch them grow and progress. Second, here can also be a financial reward when the calves are weaned and sold. However, the satisfaction of these two aspects may all depend on your herd’s efficiency and profitability.


Management Intensive Grazing Systems And The Environment, Rhonda Miller, Jennifer W. Macadam, Rich Koenig Apr 2004

Management Intensive Grazing Systems And The Environment, Rhonda Miller, Jennifer W. Macadam, Rich Koenig

All Current Publications

No abstract provided.


Processed Corn Silage Effects On Digestibility And Production Of Growing Beef Replacement Heifers, Dale Zobell, Ken Olson, Randall Wiedmeier Feb 2004

Processed Corn Silage Effects On Digestibility And Production Of Growing Beef Replacement Heifers, Dale Zobell, Ken Olson, Randall Wiedmeier

All Current Publications

Forage is generally the principle feedstuff in feedlot diets for growing cattle and, as such, its nutritive value will determine weight gain, feed intake and feed efficiency. In feedlot diets for growing cattle, corn silage can constitute up to 60% of the diet (DMB).


Building Beef Cow Nutritional Programs With The 1996 Nrc Beef Cattle Requirements Model, G. P. Lardy, Don C. Adams, Terry J. Klopfenstein, H. H. Patterson Jan 2004

Building Beef Cow Nutritional Programs With The 1996 Nrc Beef Cattle Requirements Model, G. P. Lardy, Don C. Adams, Terry J. Klopfenstein, H. H. Patterson

Faculty Papers and Publications in Animal Science

Designing a sound cow-calf nutritional program requires knowledge of nutrient requirements, diet quality, and intake. Effectively using the NRC (1996) beef cattle requirements model (1996 NRC) also requires knowledge of dietary degradable intake protein (DIP) and microbial efficiency. Objectives of this paper are to 1) describe a framework in which 1996 NRC-applicable data can be generated, 2) describe seasonal changes in nutrients on native range, 3) use the 1996 NRC to predict nutrient balance for cattle grazing these forages, and 4) make recommendations for using the 1996 NRC for forage-fed cattle. Extrusa samples were collected over 2 yr on native ...


Ec04-835 Hedging And Basis Considerations For Feeder Cattle Livestock Risk Protection Insurance, Darrell R. Mark Jan 2004

Ec04-835 Hedging And Basis Considerations For Feeder Cattle Livestock Risk Protection Insurance, Darrell R. Mark

Historical Materials from University of Nebraska-Lincoln Extension

Livestock Risk Protection (LRP) insurnace for feeder cattle is a price-risk management tool initially offered in June 2003 to feeder cattle producers in Nebraska, Colorado, Illinois, Iowa, Kansas, Nevada, Oklahoma, South Dakota, Texas, Utah, and Wyoming.

This extension circular examines historical LRP basia dn demonstrates its use in hedging with LRP.


Comparative Productivity Of Five Cool-Season Pasture Grasses Under Intermittent Flood Irrigation Grazed By Beef Cow-Calf Pairs Using Management Intensive Grazing Practices, Dale Zobell, Ken Olson, Randall Wiedmeier Jan 2004

Comparative Productivity Of Five Cool-Season Pasture Grasses Under Intermittent Flood Irrigation Grazed By Beef Cow-Calf Pairs Using Management Intensive Grazing Practices, Dale Zobell, Ken Olson, Randall Wiedmeier

All Current Publications

Utah State University is engaged in studies to determine management practices that can be employed under intensive irrigated pasture to increase productivity and viability of beef and dairy producers in Utah. One of these initiatives was a study comparing five cool-season grasses grazed by beef cow-calf pairs over a 4-year period.


Evaluation Of Agronomic Performance Of Forage Grasses In Tiahuanaco, Justiniano Mamani Condori Jan 2004

Evaluation Of Agronomic Performance Of Forage Grasses In Tiahuanaco, Justiniano Mamani Condori

Theses and Dissertations

Most families in the area of Tiahuanaco, Bolivia participate in livestock production, mainly cattle breeding. The primary feed sources for livestock in this area are native grasses, barley, and, to a smaller degree, oats. These grasses have low yield because of climate and soil conditions. This area does not have enough forage, especially during the dry season, and the animals are not regularly fed during the year. Consequently, animal production is low. This research was conducted during 2001 and 2002 at the Bolivian Catholic University campus, Farmer’s Academic Unit of Tiahuanaco, Ingavi Province, La Paz, Bolivia. Study site locations ...