Vol. 14,No. 1, January 2015
Compensatory growth, proximate composition and amino acid contents after experiencing cycles of feed
Description: 1-Engineering Research Center of Wetland Agriculture in the Middle Reaches of the Yangtze River, Ministry of Education, College of Animal Science, Yangtze University, Jingzhou, Hubei Province, 434025, China. 2-College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province, 230036, China. 3-Economics Department West Virginia University Morgantown, WV 26505, USA Corresponding author’s email: yangyanou@126.com Publish Date: Friday, June 12, 2015
The compensatory growth, proximate composition and amino acid contents changes of young yellow catfish (Pelteobagrus fulvidraco R.) (1.63-1.69 g) had been investigated using a 45-day cyclic feed deprivation and re-feeding experiment. The control group (S0) was fed daily with live tubificid worms (Limnodrilus hoffmeisteri), while the S1/4, S1/2, and S1/1 groups cyclically experienced one-day of feed deprivation followed by four, two or one day(s) of feeding, respectively. Over- or full-compensatory growth was achieved in the cyclic deprivation/re-feeding groups through increased feeding rate (FR) and feed conversion efficiency (FCE). However, the fish behaved different courses of growth compensation, the compensatory growth responses of fish subjected to a weaker intensity of feed deprivation (i.e., S1/4) compared with more intense deprivation (i.e., S1/1) was achieved in these groups mainly by a gradual increases in FR or by maintaining a high FCE, respectively. The cyclic deprivation/re-feeding schedules did not affect the proximate composition of the fish body, however, the amino acid parameters were inversely related to the specific growth rate, the fish showing growth over-compensation contained significantly lower contents of total amino acids, essential and non-essential amino acids.

Thursday 19 Nov 2015
Author: Ruan G.1 Wan Q.2 Yao F.3 Yang Y. 2 Zhang J.2 Huang L. 2
keyword: Amino acid, Compensatory growth, Over compensation, Feed conversion efficiency, Feeding rate, Prox
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