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Filtering by: Resource Type Masters Thesis Subject Sheep -- Breeding

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
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
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