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Filtering by: Subject Sheep -- Breeding Advisor Ellington, Earl F.

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

Full Text:

approximately the midpoint of the breeding season for the ewe. The domestic sheep is a seasonally
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

Full Text:

study the activity of the pituitary gland in sheep as influenced by estrogen administered alone or in