Date of Award

2014

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Animal Sciences

Department

Animal Sciences

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Hammer, Carrie

Description

Two experiments evaluated the effects of dietary supplementation on maternal reproductive parameters. In Experiment 1, 16 mares were assigned to dietary treatments: control, flaxseed, or linseed meal for 16 wk. Blood samples were analyzed for progesterone (P4), serum chemistry panel values, and fatty acids. Flaxseed supplementation increased (P < 0.01) alphalinolenic acid concentration, but treatment had no other effects. In Experiment 2, 45 multiparous ewes were allotted to dietary levels of metabolizable protein (MP): 60% (MP60), 80% (MP80), or 100% (MP100) from d 100 to d 130 of gestation. At d 130 ewes were slaughtered and tissues harvested. There was a day x fetal number interaction for P4, estradiol 17β, and thyroxine (T4) along with a treatment x fetal number interaction for T4. There was a day effect for cortisol and triiodothryonine. Results indicate dietary supplementation alters maternal parameters including hormones and fatty acids.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Handle Identifier

https://hdl.handle.net/10365/27262

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