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Filtering by: Subject Beef cattle Remove constraint Subject: Beef cattle Advisor Hohenboken, William D. Remove constraint Advisor: Hohenboken, William D.

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  • Population analysis of a commercial beef cattle herd

    Creator:
    Schons, Debra Jo
    Abstract:
    Twenty-four years of records (1958-1981) from a commercial Angus ranch were utilized in a population analysis to characterize the herd as a biological unit. The herd averaged 632±129 cows and 123±6 replacement heifers with all replacement heifers and many bulls from within the herd. Life tables were calculated for seven...
    Resource Type:
    Masters Thesis
    Full Text:
    Population Analysis of a Commercial Beef Cattle Herd AN

  • 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:
    forage production complicates management of hill pastures for the production of beef cattle. During

  • 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

  • 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