Index Catalog // ScholarsArchive@OSU

The inheritance of medullation in wool

Creator:: Young, Sing Sze
Resource Type:: Masters Thesis

The effect of levels of inbreeding of dam and offspring upon performance of purebred suffolk lambs

Creator:: England, Noah Clinton
Resource Type:: Masters Thesis

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

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

Some hormonal factors associated with the regulation of ewe reproductive patterns

Creator:: Reeves, Jerry John
Abstract:: Twenty-eight Columbia ewes were made available for study during their breeding and anestrous seasons. After the regularity of the estrous cycles had been established, eight of the ewes were sacrificed in pairs at four different stages of the estrous cycle. Eight additional ewes were sacrificed during anestrus. Pituitary glands, ovaries,...
Resource Type:: Masters Thesis

Regulation of ovine pituitary function with estrogen alone and in combination with progresterone

Creator:: Osland, Robert Birger
Abstract:: Five experiments were conducted to study the activity of the pituitary gland in sheep as influenced by estrogen administered alone or in combination with progesterone. Particular emphasis was given to the study of gonadotropic activity. Mature wethers (experiments I, III, IV and V) or ewes (experiment II) were utilized as...
Resource Type:: Masters Thesis

Genetic polymorphism of sheep hemoglobin

Creator:: Templeton, Joe Wayne, 1941-
Abstract:: Five breeds of sheep (Columbia, Targhee, Rambouillet, Lincoln, and Suffolk) were found to possess two hemoglobin types (Hb. A and Hb. B) when their hemoglobins were examined by disc gel electrophoresis. The hemoglobin alleles proved to be co-dominant. Three of the breeds (Columbia, Targhee, and Rambouillet) were maintained at altitudes...
Resource Type:: Dissertation

Genetics of sheep transferrins as determined by disc electrophoresis

Creator:: Nix, Carroll Eugene
Abstract:: A total of 902 plasma samples from the Rambouillet, Targhee, Columbia, Lincoln, and Suffolk breeds of sheep were analyzed for transferrin type by disc electrophoresis. Six transferrin types, Tf[superscript A], Tf[superscript B], Tf[superscript C], Tf[superscript p], Tf[superscript E], and Tf[superscript P], were found in the Rambouillet, Targhee, and Columbia breeds...
Resource Type:: Dissertation

Crossbred lamb production from Columbia and Suffolk ewes

Creator:: Levine, Joel Martin
Resource Type:: Masters Thesis

Effects of sire breed on growth, feed efficiency, and carcass traits of cross-bred lambs slaughtered at three weights

Creator:: Collins, Debora Ann
Abstract:: This study examined the effects of sire breed and weight on the performance of 117 crossbred wether lambs born at the Oregon State University Agricultural Experiment Station, Corvallis. Lambs were produced by mating Clun Forest,Polypay, Dorset, Border Leicester, and Suffolk sires to Columbia-type ewes. After weaning at approximately 90 days...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The inheritance of medullation in wool

The effect of levels of inbreeding of dam and offspring upon performance of purebred suffolk lambs

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

Some genetic and environmental factors affecting weaning weights of lambs

Some hormonal factors associated with the regulation of ewe reproductive patterns

Regulation of ovine pituitary function with estrogen alone and in combination with progresterone

Genetic polymorphism of sheep hemoglobin

Genetics of sheep transferrins as determined by disc electrophoresis

Crossbred lamb production from Columbia and Suffolk ewes

Effects of sire breed on growth, feed efficiency, and carcass traits of cross-bred lambs slaughtered at three weights

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