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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:: true. Heritability estimates differentiated between the highly her- itable traits, postweaning rate

Some genetic and environmental factors associated with performance and carcass traits of beef cattle

Creator:: Hoornbeek, Frank K. (Frank Kent), 1928-
Resource Type:: Masters Thesis
Full Text:: between weight at six months and feed lot gain, which they interpreted, if it. would hold true

Genetic analysis of maternal ability and evaluation of some environmental factors affecting preweaning performance of beef cattle

Creator:: Eftekhari-Shahroudi, Feridoun, 1939-
Resource Type:: Dissertation
Full Text:: . Paul E. Bernier, Dr. Roger C. Peterson, Dr. N,rbert A. Hartmann, Jr., Dr. Harry K. Phinney, Dr

Comparative values of liver nicotinamide nucleotide coenzymes, endocrine glands, and their relationships with production traits of diallel crossed beef bulls

Creator:: Anwar-Afghan, Mohammad
Abstract:: This investigation for the first time reports information on the correlation of various forms and ratios of nicotinamide nucleotide coenzymes in the liver tissue and endocrine glands weight with various production traits. Fifty-five inbred and line cross beef bulls raised under standard management conditions and slaughtered at 1000 lbs. body...
Resource Type:: Dissertation
Full Text:: with the line crosses while the opposite was true of inbred animals. Lines and line crosses showed

Hormonal stimulation of breeding activity in different genetic groups of ewe lambs

Creator:: West, Dennis Errol, 1942-
Abstract:: An investigation of the effects of exogenous gonadotropic treatments on fertility of various genetic groups of ewe lambs were run over a six-year period. Since hormonal treatments varied and the experimental animals were different from one breeding season to the next, each year comprised a separate study. Hormone treatment included...
Resource Type:: Dissertation
Full Text:: the variables. It is due to true heterotic effects. General combining ability was also significant

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Creator:: Kray, Roger LeRoy
Abstract:: Crossmatings were accomplished among three semi-closed lines within a population of pigs, for the purpose of investigating effects of crossbreeding on reproductive traits. Two of the lines were purebred (Berkshire and Yorkshire); the third line ("Composite") consisted of descendants from inter se matings among offspring of crosses of the Berkshire...
Resource Type:: Dissertation
Full Text:: that this was also true of amylose-modifier phenotypes in two of the breed categories. There was also

Serum T₄ and liver NAD and NADP as performance indicators in beef cattle

Creator:: Brokaw, Bryan Edward
Abstract:: The relationships of serum T₄ (thyroxine) levels and liver nicotinamide nucleotide coenzyme (NAD and NADP) levels with production of traits of beef cattle were investigated at both weaning (182 kg) and following performance testing (363 kg). In addition, the value of these parameters as selection criteria for improved performance was...
Resource Type:: Dissertation
Full Text:: resources and converting them into products which increase the human food supply. This is especially true

The comparison of two methods of evaluating inheritance of milk production of dairy sires

Creator:: Srinives, Supote
Abstract:: The production records used were all converted to a comparable based, 305 day lactation period, two times a day milking, and mature equivalent (305 days-2-x-ME) of 71 cows from four Holstein bulls and 59 cows from four Jersey bulls were used for the study. The Equal Parent Index, Regression Index...
Resource Type:: Masters Thesis
Full Text:: also especially true in most economic traits in all farm animals where the sire cannot express

Nonprotein nitrogenous constituents of the blood in relation to rumen development and growth in suckling lambs

Creator:: Jessup, Gordon Lee
Resource Type:: Dissertation
Full Text:: of these four attributes. If the preceding hypothesis and assumptions are true, differences in

Morphology of epididymal spermatozoa from inbred and linecross bulls

Creator:: Turner, H. A.
Abstract:: Data were presented on epididymal spermatozoa from 29 inbred and linecross bulls raised at Oregon State University in connection with the Western Regional Beef Cattle Breeding Project, W-1. The inbred bulls came from four inbred lines. Three of these inbred lines were Herfords and the other line was Angus. The...
Resource Type:: Masters Thesis
Full Text:: during the hot seasons. This has been found to be particularly true in rams. (McKenzie and Berliner

ScholarsArchive@OSU

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

Some genetic and environmental factors associated with performance and carcass traits of beef cattle

Genetic analysis of maternal ability and evaluation of some environmental factors affecting preweaning performance of beef cattle

Comparative values of liver nicotinamide nucleotide coenzymes, endocrine glands, and their relationships with production traits of diallel crossed beef bulls

Hormonal stimulation of breeding activity in different genetic groups of ewe lambs

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Serum T₄ and liver NAD and NADP as performance indicators in beef cattle

The comparison of two methods of evaluating inheritance of milk production of dairy sires

Nonprotein nitrogenous constituents of the blood in relation to rumen development and growth in suckling lambs

Morphology of epididymal spermatozoa from inbred and linecross bulls

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