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The Effects Of Litter Size On Behavioral Development And Adult Emotinoality In The Rat, Elizabeth N. Pully
The Effects Of Litter Size On Behavioral Development And Adult Emotinoality In The Rat, Elizabeth N. Pully
Master's Theses
The effects of the early experience variable of litter size is examined at two developmental time periods (infancy and adulthood) in the rat. The study departs from the majority of the early experience experimentation in its use of a naturally occurring independent variable in place of the typical handling and shocking procedures. Large (n = 9), medium (n = 5), small litters (n = 3) were developed by pooling rat pups at birth and then distributing them to randomly selected, lactating females. Observations of behaviors (including maternal grooming) during the preweaning stage of development disclosed substantial differences in response activity …
Subtle Teratogenic Effects Of Locoweed In Rats, Benjamin K. Nelson
Subtle Teratogenic Effects Of Locoweed In Rats, Benjamin K. Nelson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Locoweed, a well-known teratogenic plant affecting livestock, is prevalent in mountain regions of the Western United States. Two common species (Astragalus lentiginosus and A. wootoni), administered to pregnant rats, induced behavioral deviations in their offspring. Treated mothers consumed less feed and gained less wieght during gestation than controls when gavaged locoweed at the rate of 1 gram whole plant per day on days 7 through 17 of gestation. A. lentiginosus reduced pup weight at birth (13% less than controls) and this weight reduction (as much as 29% less than controls) continued at least four weeks. A. lentiginosus also …
Learned Helplessness Through Observation: Failure To Escape Traumatic Shock As A Result Of Observing A Helpless Situation, Donald Jary
Masters Theses & Specialist Projects
Twenty naïve male and female hooded rats were randomly divided into four groups of five subjects each. The Observe Helpless group was allowed to observe Helpless subjects receive signaled, inescapable electric shock, after which they were tested for effective escape response acquisition. Subjects in the Observe Naïve group were allowed to observe Naïve subjects being given escape-avoidance training using signaled presentations of electric shock, after which the Observe Helpless group was given similar escape-avoidance training. Results indicate that there were significant differences in the acquisition of effective escape responses between the Observe Helpless group and the other two groups. Possible …
Stimulus Control Of Lever-Holding Responses By Rats Along A Light Intensity Dimension., Michael A. Crowley
Stimulus Control Of Lever-Holding Responses By Rats Along A Light Intensity Dimension., Michael A. Crowley
Masters Theses 1911 - February 2014
No abstract provided.
Studies Of The Partial Purification And Characterization Of The Major Sulfotransferase Enzyme Found In The Male Rat, James Richard Gebhart
Studies Of The Partial Purification And Characterization Of The Major Sulfotransferase Enzyme Found In The Male Rat, James Richard Gebhart
Graduate Theses and Dissertations
No abstract provided.
Effects Of Antiestrogens On Eating, Female Sexual Behavior, And The Uptake Of 3h-Estradiol In The Central Nervous System In Rats., Edward J. Roy
Effects Of Antiestrogens On Eating, Female Sexual Behavior, And The Uptake Of 3h-Estradiol In The Central Nervous System In Rats., Edward J. Roy
Doctoral Dissertations 1896 - February 2014
No abstract provided.