The Intestinal Evacuation and Maximum Daily Consumption of Purified Formulated Diets by Juvenile Grass Carp (Ctenopharyngodon idella)
Zhen-Yu Du1, 2, *, Li-Xia Tian1, Gui-Ying Liang1, Han-Bing Lan3, Yong-Jian Liu1, *
Identifiers and Pagination:Year: 2009
First Page: 1
Last Page: 5
Publisher Id: TOFISHSJ-2-1
Article History:Received Date: 17/11/2008
Revision Received Date: 27/11/2008
Acceptance Date: 28/11/2008
Electronic publication date: 14/1/2009
Collection year: 2009
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The intestinal evacuation and maximum daily consumption of two formulated diets with different lipid content (6 and 10%) was examined in juvenile grass carp at 28°C. Fish were fed formulated diets to satiety and removed at 1 hour interval for intestine weighing. The study showed that both diets were evacuated from intestine in 12h and the process of evacuation was expressed by linear regression. In the later study of maximum daily consumption, fish were fed formulated diets to satiety four times in a single day. The sum of diet consumption in the day was recorded. The experiment was repeated in 4, 7, 10, 13, 16, 19, 22 day by the same fish. The result showed the maximum daily consumption of two formulated diets is 3.64 ± 0.23 % body weight (416.79 ± 28.84 J/g.d-1) and 3.75 ± 0.16 % body weight (481.73 ± 19.44 J/g.d-1).