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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:: was designed to determine the effectiveness of selection for fourteen day growth response (a

Anesthesia time as a measure of body fat in genetically different groups of lambs

Creator:: Hudson, Frank A., 1923-
Resource Type:: Dissertation
Full Text:: Anesthesia Time as a Measure of Body Fat in Genetically

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:: . 09 0.3 32 Table 8. (Continued) Source of Variation Birth Weight 14-day Body Weight 2 c °A* 2

Estimation of general and specific combining abilities from a diallel cross of three inbred lines of Suffolk sheep

Creator:: Schilling, Prentiss E. (Prentiss Edwin), 1941-
Abstract:: The investigations were based on a complete diallel cross among three inbred lines of Suffolk sheep. Line of sire effects were assumed to be an estimate of general combining ability effects while sire x dam interaction was assumed to be an estimate of specific combining ability. The line of dam...
Resource Type:: Dissertation
Full Text:: has been based on a selection index giving equal em- phasis to 120 -day adjusted weaning weight and

A comparison of metabolism of rapidly and slowly gaining beef cattle

Creator:: MacDonald, Malcolm Allan
Resource Type:: Dissertation
Full Text:: using 422 ste3rs from 43 sires in a 2b2 day feeding trial of three 84-day periods. Their analysis

The relationship between x-ray induced teratogeny and chromosome aberrations in golden hamster embryos

Creator:: Jones, William Elvin
Abstract:: The relationship between x-ray induced chromosome aberrations and x-ray induced embryonic abnormalities was studied. Golden hamsters were irradiated during four stages of gestation: the blastocyst stage, 4.5 days post-copulation; the primitive streak stage, 6.5 days post-copulation; the organogenesis stage, 9.5 days post-copulation; and the period of fetal growth, 11.5 days...
Resource Type:: Dissertation
Full Text:: . At eight A. M. of the sixth day a presomite embryo can be observed; an hour later five to six

Ova tranfers in sheep and rabbits : studies on material influences and irradiation damage

Creator:: Hunt, William Lynn
Abstract:: The first study utilized ova transfer in sheep and involved hormonal treatments for synchronization of estrus and superovulation in an investigation of crossbred maternal influences on inbred and linecross lambs. Synchronization of estrus in ewes was achieved effectively with either oral progestogen, 6 α-methyl-17α-hydroxy-progesterone acetate (60 mg./ewe/day), or intramuscular injections...
Resource Type:: Dissertation
Full Text:: age were recorded and a 120-day ad- justed weight was calculated. Conforrnation and condition scores

Effect of certain blood enzymes and cellular constituents on growth in different genetic groups of sheep

Creator:: Hutto, Daniel C.
Abstract:: In the present study, five breeds of ewes and their lambs were utilized. The breeds used were: Border Cheviot, Dorset Horn, Columbia, Suffolk and Willamette. In all, 31 ewes and 42 lambs were involved. The blood constituents which were determined for the ewes and lambs were: acid and alkaline phosphatase,...
Resource Type:: Dissertation
Full Text:: animal, per day for 14 days. By employing this pro- cedure, it was hoped that a majority of the lambs

Effects of radiation on selection progress in mice

Creator:: Womack, James Ernest
Abstract:: The effects of x-irradiation on quantitative genetic traits was investigated by comparing the response of irradiated mice to selection for litter size and 28-day weight with the response to selection for the same two traits in non-irradiated lines. Irradiated lines were maintained at three levels of x-irradiation, 25 r, 50...
Resource Type:: Dissertation
Full Text:: at 7:00 a. m. and off at 7:00 p. m. and the temperature was thermostatically maintained at 72

Effects of radiation on selection progress in mice

Creator:: Womack, James Ernest
Abstract:: The effects of x-irradiation on quantitative genetic traits was investigated by comparing the response of irradiated mice to selection for litter size and 28-day weight with the response to selection for the same two traits in non-irradiated lines. Irradiated lines were maintained at three levels of x-irradiation, 25 r, 50...
Resource Type:: Dissertation
Full Text:: at 7:00 a. m. and off at 7:00 p. m. and the temperature was thermostatically maintained at 72

ScholarsArchive@OSU

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

Anesthesia time as a measure of body fat in genetically different groups of lambs

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

Estimation of general and specific combining abilities from a diallel cross of three inbred lines of Suffolk sheep

A comparison of metabolism of rapidly and slowly gaining beef cattle

The relationship between x-ray induced teratogeny and chromosome aberrations in golden hamster embryos

Ova tranfers in sheep and rabbits : studies on material influences and irradiation damage

Effect of certain blood enzymes and cellular constituents on growth in different genetic groups of sheep

Effects of radiation on selection progress in mice

Effects of radiation on selection progress in mice

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