Smith-Root, Inc. | Date: 2015-12-11
A system and method to induce fish anesthetizing or narcosis is described that induces a potential field across the body of a laboratory fish having a pair of electrodes, the waveform generated by this potential field is approximately balanced to reduce the introduction of anions into the solution, and a camera is mounted to observe the activity of the fish, so that the potential difference may be adjusted based on the state of the fish.
Agency: Department of Agriculture | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 85.37K | Year: 2013
Traditional chemical sedatives for the processing of farm-raised fish are considered animal drugs that are subject to specific regulations and usage constraints (as well as chemical-bath disposal concerns). As an alternative, we propose to evaluate the use of mild, non-lethal electrosedation techniques to narcotize farm-raised fish in an effort to evaluate the technologys potential to reduce pre-harvest stress and enhance the quality and shelf life of farm-raised fish after harvest. Various electrosedation waveforms will be tested for physiological responses in farm-raised rainbow trout. Once the optimal protocol is determined, we will evaluate its effect on specific rested harvest criteria that include processing efficiency, product quality and post-harvest shelf life. In summary, we propose to identify an electrosedation protocol which elicits sedation of rainbow trout and minimizes stress levels. This protocol will then be evaluated on a larger scale in the context of rested harvest to determine whether processing efficiency, product quality, and shelf life can be improved through the use of rested harvest using electrosedation. Phase I research will be a "proof of concept" approach intended to verify that rainbow trout can be electrosedated, and that rested harvest using electrosedation will yield the desired improvements in fillet quality. Key milestones and outcomes will include regular reports of progress, publications in both general and science-based outlets, and presentations at symposia and conferences. Our intent is to generate information that will allow for the development of electrosedation equipment specifically intended for rested harvest processing protocols in Phase II. The proposed approach may improve animal welfare, as well as the logistical and economic operations of U.S.-held fish farms. Furthermore, and given the extensive culture of salmonids throughout the world, the results (Phase I) and equipment generated (Phase II) will very likely be applicable in a broad context in both the U.S. and abroad. Development of technologies to improve the quantity and quality of farm-raised seafood (without the use of chemical sedatives) also addresses National Institute of Food and Agriculture-related societal needs that include global food security and food safety.
Smith-Root, Inc. | Date: 2016-05-06
An electrical deterrent system including a pulse generator, power source, and substrates with accompanying electrodes for attaching to different types of surfaces and supports on various manufactured structures to repel pinnipeds from a manufactured or man-made structure that otherwise is not intended for pinniped use.
Smith-Root, Inc. | Date: 2013-07-12
Described herein is an aquatic electrical barrier that has the electrodes configured in a matrix array configuration, where each electrode element of the matrix array is mounted either directly on the bottom of a water channel or on extendable rods; the matrix array is controlled so that aquatic species may be physically moved by the aquatic species physiological response to a time-varying and spatially-varying electrical field.
Smith-Root, Inc. | Date: 2014-02-04
The apparatus and methods are described for an electrical fish barrier system that has more than one geographically separate pulsator that are connected to a common electrical grid and are synchronized to prevent the overlapping of electrical pulses to prevent line notching or local line electrical line noise that may interfere with railroad transmission lines.
Smith-Root, Inc. | Date: 2015-01-22
The inventive subject matter describes an electrical barrier for the deterrence of fish having an electrical barrier with a computer system capable of executing a modified soft-start algorithm, the computer system further having a detector input and a switch output; a bio-electric fish proximity detector. the bio-electric fish proximity detector having a anode-cathode detecting pair input and a signal output, wherein said signal output is connected to the detector input; a time varying voltage source.
Smith-Root, Inc. | Date: 2013-06-05
A method of slaughtering fish comprising the steps of providing an elongate passage, passing fish entrained within a flow of water through said passage, and generating linear electric field in the water along at least a first region of said passage, thereby inducing electro-anaesthesia or stunning of the fish passing through said first region of the passage, and applying a further electric field in the water in a subsequent region of the passage, downstream of said first region, to kill the fish such that the fish exit a downstream end of said passage in a dead state.
Smith-Root, Inc. | Date: 2016-08-23
Smith-Root, Inc. | Date: 2010-11-22