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Analysis of two alternative management systems for the production of fall born beef calves in western Oregon

Creator:: Rosecrans, John Gerald
Abstract:: Two management systems were evaluated in terms of the effects on calf growth, on calf weight produced per cow per year, and on reproductive performance of fall calving cows. The alternative management systems tested were twin foster calf production and, delayed weaning, production of single suckled calves weaned at the...
Resource Type:: Masters Thesis
Full Text:: Production of Fall Born Beef Calves in Western Oregon AN ABSTRACT OF THE THESIS OF JOHN GERALD ROSECRANS

Summary of reports : tenth annual Beef Cattle Day

Creator:: Oregon State University. Agricultural Experiment Station
Abstract:: Published May 1968. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: big, strong, growthy cattle. Such an evaluation method is simple and rapid, and all beef cattle

Scrotal circumference measurements as an indicator of growth in the male beef animal

Creator:: Pirelli, Gene J.
Abstract:: Testes size as an indicator of future growth was examined in a total of 45 bull calves from spring calves born in 1978 and 1979. Scrotal circumference measurements were used as the physical indicator of testicle size in the live animal. Growth traits studied were preweaning average daily gain, weaning...
Resource Type:: Masters Thesis
Full Text:: beef cattle herd at Soap Creek Ranch, located approximately ten miles north of the Oregon State

Nutrition and management of the beef unit for production of slaughter animals on range and improved pastures in southeastern Oregon

Creator:: Daugherty, Dennis A.
Abstract:: Studies were conducted over a two year period to evaluate alternative finishing methods for spring and fall-born beef cattle. Management alternatives from birth to slaughter included season of calving, lactating cow nutrition, preweaning calf nutrition, weaning age, calf and yearling winter nutrition, range and irrigated pasture supplementation, grazing practice, range...
Resource Type:: Dissertation
Full Text:: -born beef cattle. Management alternatives from birth to slaughter included season of calving, lacta

The effect of certain production factors and rates of gain on carcass characteristics of beef steers

Creator:: Thompson, Kenneth Earl
Abstract:: The purpose of the present study was to determine the association of initial weight, average daily gain, days on feed, percent total digestible nutrients (TDN) and percent digestible protein in the ration with USDA carcass grade, marbling score, conformation score, back fat thickness and area of longissimus dorsi of beef...
Resource Type:: Masters Thesis
Full Text:: was 1098 beef steers from eight experi- ments conducted by members of Oregon State University faculty

Selection applied, response of traits and combining abilities of inbred lines of beef cattle

Creator:: Hoornbeek, Frank K. (Frank Kent), 1928-
Abstract:: The investigations reported are based on two studies; the first is concerned with the selection practiced for performance in one inbred Angus and three inbred Hereford lines of cattle, the realized responses, levels of inbreeding and associated performance, and heritabilities of the performance traits. Selection differentials for all performance traits...
Resource Type:: Dissertation
Full Text:: ABILITIES OF INBRED LINES OF BEEF CATTLE by FRANK KENT HOORNBEEK A THESIS submitted to OREGON

Computer simulation of beef cattle production systems in the Llanos of Columbia

Creator:: Levine, Joel Martin
Abstract:: A simulation model capable of execution on a programmable calculator was developed to study voluntary intake, liveweight change, and fertility of grade Zebu cows in the Llanos of Colombia. Organic nitrogen in the diet and meta bolic weight were used to predict intake; age, liveweight, and energy concentration were the...
Resource Type:: Dissertation
Full Text:: Computer simulation of beef cattle production systems in

Alternate methods of fattening steers in Eastern Oregon

Creator:: Whittington, David Lynn
Abstract:: Studies were conducted at the Squaw Butte Experiment Station during two consecutive years to : (1) compare various internal indicators and chromic oxide to estimate forage intake and fecal production, (2) compare methods of producing slaughter weight steers using maximum quantities of forage and minimum quantities of grain. Actual fecal...
Resource Type:: Dissertation
Full Text:: evaluation is needed in cattle. The Cr 2 0 3 -paper method has some obvious drawbacks. Administration of

Mathematical modeling of selection and crossbreeding in beef cattle

Creator:: Clarke, Stephen Emil
Abstract:: A mathematical model was developed to simulate alternative selection and crossbreeding strategies for commercial beef production. Biological and economic constraints were selected to represent typical pasture production of calves in the Northwest. The crossbreeding study evaluated the relative economic efficiency of different 1) mating plans when sire breeds of several...
Resource Type:: Dissertation
Full Text:: Beef Cattle AN ABSTRACT OF THE THESIS OF STEPHEN EMIL CLARKE for the degree of DOCTOR OF PHILOSOPHY

Monensin and zeranol alone and in combination for growing-finishing steers and growing heifers

Creator:: Wooten, Donald Griffin
Abstract:: Ninety-two spring-born and 76 fall-born steer and heifer calves (Hereford and Angus x Hereford) averaging 188 and 255 kg, respectively, were utilized in a 2x2 factorial arrangement of treatments to study the effects of zeranol and monensin, alone and in combination, on growth rate, feed efficiency and carcass characteristics. After...
Resource Type:: Masters Thesis
Full Text:: Oregon State University in partial fulfillment of the requirements for the degree of Master of Science

ScholarsArchive@OSU

Analysis of two alternative management systems for the production of fall born beef calves in western Oregon

Summary of reports : tenth annual Beef Cattle Day

Scrotal circumference measurements as an indicator of growth in the male beef animal

Nutrition and management of the beef unit for production of slaughter animals on range and improved pastures in southeastern Oregon

The effect of certain production factors and rates of gain on carcass characteristics of beef steers

Selection applied, response of traits and combining abilities of inbred lines of beef cattle

Computer simulation of beef cattle production systems in the Llanos of Columbia

Alternate methods of fattening steers in Eastern Oregon

Mathematical modeling of selection and crossbreeding in beef cattle

Monensin and zeranol alone and in combination for growing-finishing steers and growing heifers

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