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Filtering by: Subject Sheep -- Breeding Remove constraint Subject: Sheep -- Breeding Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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

Creator:

England, Noah Clinton

Resource Type:

Masters Thesis

Full Text:

transmitted with a high degree of predictability--some combination of closed herd breeding and selection
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
Crossbred lamb production from Columbia and Suffolk ewes

Creator:

Levine, Joel Martin

Resource Type:

Masters Thesis

Full Text:

. Ewe Production and Lamb Traits II. Simulation of the Sheep Flock: Net Income Per Ewe AN ABSTRACT OF
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
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

Full Text:

review of sheep crossbreeding studies by Nitter (1978) indicated that crossbreeding systems generally
The inheritance of medullation in wool

Creator:

Young, Sing Sze

Resource Type:

Masters Thesis

Full Text:

Blaokface sheep. That the hereditary factor Is the cause of medullated. fibers is partially vers fled by

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Academic Affiliation

Animal Science4
Animal Husbandry1
Dairy and Animal Husbandry1

Advisor

Bogart, Ralph2
Ellington, Earl F.2
Hohenboken, William D.1
Thomas, David L.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1949 to 1983

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Creator

Collins, Debora Ann1
England, Noah Clinton1
Levine, Joel Martin1
Osland, Robert Birger1
Reeves, Jerry John1
more Creators »

Date

Date range begin – Date range end

Current results range from 1949 to 1982

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Decade

1980-19891
1970-19791
1960-19693
1940-19491

Degree Field

Animal Science4
Animal Husbandry1
Dairy and Animal Husbandry1

Degree Level

Master's6

Degree Name

Master of Science (M.S.)[remove]6

Language

English [eng]6

Non-Academic Affiliation

Oregon State University. Graduate School6

Peer Reviewed

No6

Resource Type

Masters Thesis6

Rights Statement

Copyright Not Evaluated6

Subject

Sheep -- Breeding6
Estrogen1
Lambs1
Livestock -- Breeding1
Progesterone1
more Subjects »

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