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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:: means by sex of calf for preweaning gain of David calves. 56 57 58 59 60 61 62 - - - - ,R

Estimates of combining abilities, heterotic effects and phenotypic correlations among in-bred lines of beef cattle and their line-crosses

Creator:: Humes, Paul Edwin
Abstract:: The investigations were based on a complete diallel cross among three inbred lines of Hereford cattle. Records of Angus calves born during the same period were used to obtain more accurate estimates of environmental effects and to determine breed differences among the various traits included in the study. Estimates of...
Resource Type:: Dissertation
Full Text:: members Dr, Rod V. Frakes, Fredrick L. Hisaw, Jr. and W. R. Furtick for the time and competent advice

Gonadotropins in pituitaries of inbred and linecross beef bulls and effects of irradiation of mammalian pituitary glands on their ability to induce in vitro ovulation of frog ovaries

Creator:: North, Warren Arthur
Abstract:: There were two studies involved in the thesis research. In the first study, variation in the amount of adenohypophysis gonadotropins among 22 individual beef bulls were investigated. These bulls represented four inbred lines, and six linecrosses. The bulls were raised in the Oregon State University purebred herd. The bulls were...
Resource Type:: Dissertation
Full Text:: when the pituitary- treated mice were compared with control mice, r% ¿/ ? / /,ñ /9 When the

Electrocardiograms and related variables of dwarf beef cattle

Creator:: Pinjani, Moti, 1939-
Abstract:: Electrocardiograms from 12 compressed male (CM), 16 compressed female (CF), ten synthetic compressed female (SCF), nine brachycephalic female (BF), and 15 dolichocephalic female (DF) dwarfs from Davis, California, taken in the scapular lead S-II (prescapular position positive and right forelimb negative) were analyzed, The data on dwarf electrocardiograms were compared...
Resource Type:: Dissertation
Full Text:: and Manning at Corvallis, Oregon. The average R-R, P--R, Q-T, and T-Q intervals, and the QRS

Chemical and cellular constituents in the blood of genetically different lines of growing beef cattle

Creator:: Price, Donald Austin
Resource Type:: Dissertation
Full Text:: females 42 6. David males versus David females 43 B. Comparisons Between Breeds • • • 44 1. Hereford

Hematological study of genetically different lines of growing beef cattle

Creator:: Bhannasiri, Tim
Resource Type:: Dissertation
Full Text:: tendered to Dr. Roger G. Petersen and Dr. Jerome C R. Li, Professor and Chairman of the Department of

The relation of the serum phosphatases to growth of genetically different groups of beef cattle

Creator:: Alexander, Graham Irving
Resource Type:: Dissertation
Full Text:: certain laboratory facilities necessary for carrying out tíiis investigation and to i)octor R. G

Nitrogenous constituents in the blood of four lines of calves

Creator:: Ampy, Franklin Roosevelt
Resource Type:: Dissertation
Full Text:: of Calves Abstract approved ( . r Professor' Certain nitrogenous blood components and production

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:: Angus line. The lines of cattle were: (1) Lionheart, (2) Prince, (3) David and (4) Angus. All lines

Heart rate patterns in beef cattle

Creator:: Ratarasarn, Sucheep
Resource Type:: Dissertation
Full Text:: Effect of Age and VJeit of Calves on He ax' t R a t e . . . . . . . . . . . . . . . . . 72 The Effect

ScholarsArchive@OSU

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

Estimates of combining abilities, heterotic effects and phenotypic correlations among in-bred lines of beef cattle and their line-crosses

Gonadotropins in pituitaries of inbred and linecross beef bulls and effects of irradiation of mammalian pituitary glands on their ability to induce in vitro ovulation of frog ovaries

Electrocardiograms and related variables of dwarf beef cattle

Chemical and cellular constituents in the blood of genetically different lines of growing beef cattle

Hematological study of genetically different lines of growing beef cattle

The relation of the serum phosphatases to growth of genetically different groups of beef cattle

Nitrogenous constituents in the blood of four lines of calves

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

Heart rate patterns in beef cattle

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