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Cycling and reproductive phenomena in gilts

Creator:: Knott, Robert Edward
Abstract:: Purebred Yorkshire gilts from a confinement managed herd were reared to test weights away from the sow and boar herd. Thirty-eight gilts weighing between 73 and 80 kilograms constituted group A gilts; 38 gilts weighing between 91 and 100 kilograms constituted group B gilts; and 47 gilts weighing 114 kilograms...
Resource Type:: Masters Thesis
Full Text:: : Redacted for privacy David C. England, Profa or of Animal Science Purebred Yorkshire gilts from a

Reproductive characteristics of two breeds of swine fed dichlorvos

Creator:: Trindade, Roger James
Abstract:: Thirty-six gilts were used in an experiment of 2³ factorial design. The experiment consisted of two breeds (Yorkshire- Berkshire and Yorkshire), two feeding regimens (pre-breeding and post-breeding) and two levels of dichlorvos (2, 2-dichlorovinyl dimethyl phosphate, 0 and 800 mg. per gilt per day). Pre-breeding treatment consisted of feeding dichlorvos...
Resource Type:: Masters Thesis
Full Text:: SWINE FED DICHLORVOS Abstract approved: Redacted for Privacy David C. EnglOd Thirty-six gilts were

Reproductive and litter performance of sows mated during lactation

Creator:: Walker, Calvin
Abstract:: An experiment was conducted with 51 control and 51 experimental confinement- managed purebred Yorkshire sows of various parities to (1) determine whether confinement-managed sows during lactation would exhibit estrus, mate, and conceive as a consequence of a daily regimen of a short period of separation from their litters, mixing sows...
Resource Type:: Masters Thesis
Full Text:: . To my major professor, Dr. David C. England, for his counseling and guidance throughout my Master of

The relationship of initial weight to growth rate in preweaning pigs

Creator:: Keeler, Joseph Lambert
Abstract:: Growth data compiled in this study were collected by using pigs farrowed during the fall, 1963 and spring, 1964 farrowing seasons of the Oregon State University swine herd. Thirty-seven trios of light-, medium- and heavy-birth-weight suckling pigs were used to determine the effect of birth weight on subsequent rate of...
Resource Type:: Masters Thesis
Full Text:: wishes to express his sincere thanks to Dr. David C, England, associate professor of Animal Science, for

Criteria for selection and management in the swine breeding herd

Creator:: Page, Edward Bryce
Abstract:: Oregon State University swine herd records of four genetic groups were analyzed to determine: (1) the association of occurrence of a small litter (≤ 7) at birth with size of subsequent litters for gilts and sows, separately; (2) the effect of parity, genetic background and litter size on mean birth...
Resource Type:: Masters Thesis
Full Text:: ma j or professor, Dr. David C. England for his assistance and interest throughout the development

Litter productivity at first and second parity by gilts mated at different weights at first or second estrus

Creator:: Tachasirinugune, Sommai
Abstract:: Purebred Yorkshire gilts with weights ranging from 70 to 105 kilograms were moved from a total-confinement rearing unit to a total-confinement brood stock unit where approximately ten gilts per pen were mixed to provide new penmates. Each gilt was thus exposed to an unfamiliar environment and to foreign penmates along...
Resource Type:: Masters Thesis
Full Text:: my college career; to my major professor, Dr. David C. England, for his kindness that gave

Weights and nursing positions of pigs and milk production of individual under sections of sows

Creator:: Rose, Harvey Frederic
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Redacted for Privacy ACKNOWLEDGMENTS The author wishes to thank Dr. David England

The influence of heredity and some environmental components on occurrence of puberty in gilts in confinement

Creator:: Walker, Calvin
Abstract:: In a swine production and breeding experiment, Yorkshire gilts were evaluated for the influences of heredity-and some environmental components on occurrence of puberty in gilts in confinement. In the first experiment, 186 Yorkshire gilts reared and maintained in total confinement were used in a study to assess effects of several...
Resource Type:: Dissertation
Full Text:: Walker, would like to extend my appreciation to Dr. D. C. England for serving as my major professor

Management techniques for induction and synchronization of estrus in prepuberal gilts in confinement

Creator:: Schiemann, Calvin Aloysius
Abstract:: At weights of 81.5-90.5 kg, 187 prepuberal crossbred gilts were subjected to specific environmental stimuli, for up to 17 days, to determine which stimuli or combinations of various ones would initiate onset of estrus in prepuberal gilts. The stimuli used were: movement to new building, mixing or non-mixing of gilts,...
Resource Type:: Masters Thesis
Full Text:: ;Redacted for Privacy David C. England, Professor of Animal Science At weights of 81.5-90.5 kg, 187

The relationship of blood glucose levels to ovulation rate and early embryonic mortality in gilts

Creator:: Day, Paul E.
Abstract:: A study was made of blood glucose levels and their relationship to reproduction in gilts. Twelve blood samples, two in each of three successive weeks, before and after breeding were taken. Half of the samples were obtained from gilts in a fasting state and half after feeding. All samples were...
Resource Type:: Masters Thesis
Full Text:: . David C. England, Professor of Animal Science, for his guidance and counsel throughout this undertaking

ScholarsArchive@OSU

Cycling and reproductive phenomena in gilts

Reproductive characteristics of two breeds of swine fed dichlorvos

Reproductive and litter performance of sows mated during lactation

The relationship of initial weight to growth rate in preweaning pigs

Criteria for selection and management in the swine breeding herd

Litter productivity at first and second parity by gilts mated at different weights at first or second estrus

Weights and nursing positions of pigs and milk production of individual under sections of sows

The influence of heredity and some environmental components on occurrence of puberty in gilts in confinement

Management techniques for induction and synchronization of estrus in prepuberal gilts in confinement

The relationship of blood glucose levels to ovulation rate and early embryonic mortality in gilts

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