Oral Gavage
Oral Gavage - Related Videos
04:28
Utilizing an Orally Dissolving Strip for Pharmacological and Toxicological Studies: A Simple and Humane Alternative to Oral Gavage for Animals
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Cited by 4 •
2016
The following protocol describes a novel method for chronic oral drug administration using an orally dissolving strip (ODS) in lieu of the more commonly used oral gavage method. We demonstrate that preclinical, oral drug delivery using the ODS method represents a safe, convenient, and humane alternative to oral gavage.
12:12
Transformation of Probiotic Yeast and Their Recovery from Gastrointestinal Immune Tissues Following Oral Gavage in Mice
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Cited by 2 •
2016
Presented here is a unified description of techniques that can be used to develop, transform, administer, and test heterologous protein expression of the probiotic yeast Saccharomyces boulardii.
11:53
Oral Administration of Rotenone using a Gavage and Image Analysis of Alpha-synuclein Inclusions in the Enteric Nervous System
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Cited by 37 •
2010
Parkinson's disease has been related to the exposure to pesticides. Here we show a method to deliver pesticides using a gastric tube at the desired concentration and a method to analyze their effect in alpha-synuclein accumulation in the enteric nervous system.
07:18
Oral Gavage in Neonatal Mouse Pups and Functional Assessment of Gut Barrier Integrity Using Ussing Chambers
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2026
This article describes: (1) oral gavage delivery of test molecules to neonatal mice as early as DOL 6; and (2) ex vivo evaluation of colonic epithelial barrier function in biopsies from DOL 10 to weaning (DOL 20) pups by assessing paracellular and transcellular permeability with Ussing chambers.
03:09
Gavaging Adult Zebrafish
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Cited by 80 •
2013
The increasing use of zebrafish as an animal model requires the development of effective methods for the delivery of known quantities of compounds and solutions. The gavage procedure described below allows for the oral delivery of precise volumes of solution reliably, safely and efficiently to adult zebrafish.
FAQs
Oral gavage improves experimental control by fixing the amount delivered and the timing of administration. Placing a test solution, compound, nutrient, or medication directly in the stomach reduces uncertainty about whether an animal received the intended dose. This consistency allows investigators to compare absorption and biological responses across subjects under standardized experimental conditions.
Proper restraint and equipment selection protect both animal welfare and data quality. The feeding needle or flexible tube must be appropriate for the procedure, while controlled handling helps guide the device through the mouth and esophagus. Poor technique can cause stress, injury, or aspiration, creating complications that may also confound measurements of absorption or biological response.
Reliable results depend on maintaining controlled conditions, using a known volume, selecting suitable equipment, and applying consistent restraint and technique. Variation in any of these factors can change the delivered dose or increase stress and procedural complications. Standardizing these elements helps distinguish a true biological response from effects caused by inconsistent administration.
Delivery into the stomach provides a defined starting point for examining how an administered substance is absorbed and how the animal responds. Because the dose and administration time can be controlled, investigators can relate observed effects to a known exposure. This supports biological studies involving compounds, nutrients, medications, and other test solutions.
The procedure begins with appropriate restraint and preparation of the selected feeding needle or flexible tube. The device is guided through the mouth and esophagus into the stomach, after which a known volume of the test material is released. Careful control of handling, equipment, dose, and timing helps reduce complications and improve comparability among subjects.
A feeding needle or flexible tube is required to deliver the test solution, compound, nutrient, or medication, along with conditions that support controlled restraint and handling. The administered volume should be known, and timing should remain consistent across subjects. These requirements help ensure that differences in outcomes reflect the test material rather than procedural variation.
Biologists use oral gavage in pharmacokinetic, toxicology, nutrition, and disease research when they need standardized dosing and timing. The technique can support studies of how substances are absorbed and how animals respond to defined exposures. Its value is greatest when consistent administration is necessary for comparing subjects or evaluating compounds, nutrients, medications, or test solutions.