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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

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

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

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

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

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

Creator:: Haas, Joel D.
Abstract:: During years 2005, 2006, and 2007 ewes of predominantly Polypay breeding were bred to either Dorper or Polypay rams for spring lambing. Ewes were assigned to single-sire mating groups based on age and genotype. Internally generated replacements were added to the flock for the 2007 lambing season and bred to...
Resource Type:: Masters Thesis
Full Text:: : ____________________________________ Howard H. Meyer During years 2005, 2006, and 2007 ewes of predominantly Polypay breeding were

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