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Some genetic and environmental factors affecting weaning weights of lambs

Creator:: Dahmen, J. J. (Jerome John), 1919-
Abstract:: Eight purebred rams (four Suffolk and four Panama) previously selected as high and low on the basis of post-weaning performance feed test of 84 days were used each of three years. Each of the rams was mated to approximately 25 grade Panama ewes each year. One ram and 25 ewes...
Resource Type:: Dissertation
Full Text:: of rearing, management, age of dam, ram effect and interactions. 40 10 Least squares means for

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:: DOCTOR OF PHILOSOPHY (Name) (Degree) in GENETICS (Major) presented on August 10, 1968 (Date) Title

Genetic and environmental differences in important economic traits of crossbred sheep in spring lamb production

Creator:: De Baca, Roberto Luciano C., 1930-
Resource Type:: Masters Thesis
Full Text:: on 1mb production 10 Breed comparionz In 1anb production 11 Relation of birth weight, survival

Changes in certain blood constituents associated with growth and development of young beef cattle

Creator:: Williams, Charles Melville
Resource Type:: Dissertation
Full Text:: e . s s 42 LIST OF FIGURES AND TABL continued Table Page 10 Analysis of Variance of Blood

Genetic and physiological factors associated with gonadotropic and thyrotropic hormone content of sheep pituitaries

Creator:: Plotka, Edward Dennis
Abstract:: Data were taken from 47 animals consisting of five breeds: Border Cheviot, Columbia, Dorset Horn, Suffolk, and Willamette. Both sexes were represented in each breed, although in unequal numbers. The pituitaries were assayed for gonadotropic and thyrotropic hormone content by injecting a suspension of the macerated gland in saline into...
Resource Type:: Masters Thesis
Full Text:: Department of Animal Science Dean of Graduate School Date thesis is presented May 10, 1963 Typed by

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

Creator:: Alexander, Graham Irving
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . 10 1. Management . . . . . . . . . . . . io 2. Blood Co11ectior . . . . . . ...... . 11 3

Effectiveness of selection for gains in body weight in beef cattle

Creator:: Hitchcock, Glen Henry
Abstract:: Research has yielded valuable information about the inheritance of body weight in many mammals. The results with one species may not be directly applicable to another species, but since the results do not contradict genetic theory, one must assume that the same general rules apply to all species. When the...
Resource Type:: Masters Thesis
Full Text:: - ommended for brood cows and young cattle. 10 Winter feeding is usually begun about December 1, and

The effect of dietary factors upon the hormone content of the anterior pituitary

Creator:: Nicholson, Hugh Hampson
Resource Type:: Dissertation
Full Text:: gonadotrophic activity of the anterior pituitary gland . . e e e e e 10 MATERIALSANDMETHOD

Environmental temperature and the thyroid gland involvement in fertility of male rabbits

Creator:: Oloufa, Mohamed Mohamed
Resource Type:: Dissertation
Full Text:: ....... a .14 flT'PTTTfThT 10/ sJukitJJ_ e . . . . s. . . . . t . I * . . . ..*.. s , P

The effects of thiouracil and thyroprotein on growth, wool production and fertility of rams

Creator:: Adams, Charles C.
Resource Type:: Masters Thesis
Full Text:: of thiouracil and thjroprotein on sexual interest in young rams...................a 26 10, Effect

ScholarsArchive@OSU

Some genetic and environmental factors affecting weaning weights of lambs

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

Genetic and environmental differences in important economic traits of crossbred sheep in spring lamb production

Changes in certain blood constituents associated with growth and development of young beef cattle

Genetic and physiological factors associated with gonadotropic and thyrotropic hormone content of sheep pituitaries

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

Effectiveness of selection for gains in body weight in beef cattle

The effect of dietary factors upon the hormone content of the anterior pituitary

Environmental temperature and the thyroid gland involvement in fertility of male rabbits

The effects of thiouracil and thyroprotein on growth, wool production and fertility of rams

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