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Effectiveness of selection for productive characteristics in developing the Montana no. I hogs

Creator:: McEwen, Wesley Charles
Abstract:: One of the most important productive characteristics of hogs is reproductive efficiency. Reproductive efficiency is best measured by litter size at weaning. Litter size at birth and weight of the pigs at birth are among the most important factors affecting litter size at weaning. It has been demonstrated that less...
Resource Type:: Masters Thesis
Full Text:: foetuses averad about 7 per cent heavier and that no association between 12 foetal position and sex

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:: degree of Doctor of Philosophy in Genetics presented on August 12, 1975 Title: SERUM T4 AND LIVER NAD

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:: . Breed OverallWillamette Suffolk Treated No. of ewes 19 11 30 No. of ewes lambing 9 3 12 No. of

Actual and predicted response to selection on maternally influenced traits in the mouse

Creator:: Lind, Ronald Egnard
Abstract:: An experiment was conducted to determine if selection from standardized litters would be effective in separating lines of mice selected for increased and decreased litter weight at 14 days of age, and if response to selection on this maternally influenced trait could be accurately predicted. Data were collected on litter...
Resource Type:: Dissertation
Full Text:: - tively. There were no differences between high, low and control line progeny when they were reared by

Hematological study of genetically different lines of growing beef cattle

Creator:: Bhannasiri, Tim
Resource Type:: Dissertation
Full Text:: 12. Analysis of Variance, Coefficients of Variation and Determination and Standard Deviations of

Sex hormone influence on rate and efficiency gains, endocrines and carcass characteristics of rabbits

Creator:: Rasheed, Ahmed Adel
Resource Type:: Dissertation
Full Text:: sho,zed no defInite effoct of the hormone on body gains. Korenchevsky and coworkers (76, 77

Some factors affecting rate and economy of gains in beef cattle

Creator:: Dahmen, J. J. (Jerome John), 1919-
Resource Type:: Masters Thesis
Full Text:: periods. 12 31ack and Knapp (, p.76) howod that there was no correlation between efficiency of

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:: Number of Daughters Required in Indexing a Dairy Bull 12 MATERIALS AND METHODS 15 RESULTS AND

Genetic parameters of the house fly (Musca domestica Linn.)

Creator:: Konanta, Sugsanguan
Abstract:: Eight strains of housefly, Musca domestica Linn., from two laboratories were intercrossed to form a stock population. Virgin males and females from the stock were collected, and nine sets, each consisting of twelve males mated to five females, were successively done. Pupae weight, adult weight, emergence time and egg production...
Resource Type:: Masters Thesis
Full Text:: . domestica has the chromosome number 2n= 12; the autosomes are all metacentric. One of the autosomes has

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:: Hereford inbred lines of cattle were compared with one another no significant differences were found for

ScholarsArchive@OSU

Effectiveness of selection for productive characteristics in developing the Montana no. I hogs

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

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

Actual and predicted response to selection on maternally influenced traits in the mouse

Hematological study of genetically different lines of growing beef cattle

Sex hormone influence on rate and efficiency gains, endocrines and carcass characteristics of rabbits

Some factors affecting rate and economy of gains in beef cattle

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

Genetic parameters of the house fly (Musca domestica Linn.)

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

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