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Filtering by: Alternative title ssim Report no. 1362 Advisor Bogart, Ralph Committee Member Kronstad, Warren

Hormonal stimulation of breeding activity in different genetic groups of ewe lambs

Creator:

West, Dennis Errol, 1942-

Abstract:

An investigation of the effects of exogenous gonadotropic treatments on fertility of various genetic groups of ewe lambs were run over a six-year period. Since hormonal treatments varied and the experimental animals were different from one breeding season to the next, each year comprised a separate study. Hormone treatment included...

Resource Type:

Dissertation

Full Text:

, histological examination of the reproductive tracts of treated and control ewe lambs were made. No differences
Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Creator:

Kray, Roger LeRoy

Abstract:

Crossmatings were accomplished among three semi-closed lines within a population of pigs, for the purpose of investigating effects of crossbreeding on reproductive traits. Two of the lines were purebred (Berkshire and Yorkshire); the third line ("Composite") consisted of descendants from inter se matings among offspring of crosses of the Berkshire...

Resource Type:

Dissertation

Full Text:

breed (9.33 vs. 8.13). No difference between numbers born dead per litter was found for the two types