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

Redden, Reid

Description

The objective of this study was to determine the effects of injectable and oral arginine (Arg) supplementation provided 14 d post-breeding on reproductive performance of fall lambing ewes. Upon estrus detection (d 0) ewes were randomly assigned to one of six treatments for a 14-d treatment period: injectable saline (CON; n = 25), injectable alanine (IVALA; n = 20), injectable arginine (IVARG; n = 23), oral rumen-protected Arg (RPARG; n = 20), oral soybean meal (SBM; n = 23), or oral fishmeal (FM; n = 24). Weaning rates were higher (P < 0.05) in Arg supplemented ewes. Plasma progesterone and serum Arg concentrations exhibited a treatment and day effect (P < 0.05), but no treatment × day interaction was observed (P > 0.05). In contrast to previous research, supplemental Arg during the first 14 d of pregnancy did not improve pregnancy or lambing rates, however, IVARG positively impacted weaning rates.

Rights

NDSU policy 190.6.2

Rights Link

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

Handle Identifier

https://hdl.handle.net/10365/27354

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