Award Date

1-1-1991

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Biology

Number of Pages

171

Abstract

The physiological effects of the consumption of diets varying in protein and calorie content was assessed using young male Sprague-Dawley rats. Food intake (FI), water intake (WI), body weight (BW), rectal temperature (Tre), oxygen consumption (VO{dollar}\sb2{dollar}), hematocrit (Hct), Hemoglobin (Hb), plasma protein concentration (PP), and plasma levels of thyroxine (T{dollar}\sb4{dollar}), triiodothyronine (T{dollar}\sb3{dollar}), free thyroxine index (FT{dollar}\sb4{dollar}), and thyroid stimulating hormone (TSH) were measured. Food intake expressed per g BW was highest in the LP (5% protein) diet group, but body weight gain was the lower in the LP fed group compared to the Control group (22.5% protein). Decreases in dietary protein content were associated with of increased Hct, Hb, T{dollar}\sb4{dollar}, T{dollar}\sb3{dollar}, and heart weight along with decreased liver weight, plasma protein content, and gWI/gFI. The low calorie (LC) diet produced a decreased liver weight and PP, and a faster rise in Tre under cold stress along with a lower overall Tre during heat stress. (Abstract shortened with permission of author.).

Keywords

Diet; Growth; Hormone; Influence; Laboratory; Output; Rate; Rats; Thermoregulation; Thyroid; White

Controlled Subject

Physiology; Zoology; Zoology

File Format

pdf

File Size

4280.32 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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