alexa Growth rate, body composition and feed digestibility conversion of growth-enhanced transgenic Atlantic salmon (Salmo salar)
Agri and Aquaculture

Agri and Aquaculture

Fisheries and Aquaculture Journal

Author(s): JT Cook, MA McNiven, GF Richardson, AM Sutterlin

Abstract Share this page

Although dramatic improvements in growth rates have been documented in growth-enhanced transgenic salmonid fish, prior to commercial implementation of this technology, there is a need for further information relating to the physiology of a number of commercially important production traits. Growth rate, feed digestibility, feed conversion, and body composition of F2 generation growth-enhanced transgenic Atlantic salmon were therefore compared with that of non-genetically modified salmon, over a presmolt growth interval of 8–55 g. The growth-enhanced transgenic fish exhibited a 2.62- to 2.85-fold greater rate of growth relative to non-transgenic salmon over the body weight interval examined. Daily feed consumption over this body weight interval was 2.14- to 2.62-fold greater for the transgenic fish compared to the control fish. Transgenesis did not affect the extent to which protein and energy were digested, with digestibility coefficients 88% and 81%, respectively for transgenic fish, and 90% and 84%, respectively for control fish, both measured over comparable body weight intervals. However, transgenic salmon relative to control fish exhibited a 10% improvement in gross feed conversion efficiency. Body protein, dry matter, ash, lipid and energy were significantly lower in the transgenic salmon relative to controls while moisture content was significantly higher. The transgenic experimental subjects used throughout the present study possessed the physiological plasticity necessary to accommodate an acceleration in growth well beyond the normal range for this species with few effects other than a greater appetite and a leaner body.

This article was published in Aquaculture and referenced in Fisheries and Aquaculture Journal

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version