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Compensatory growth, proximate composition and amino acid contents after experiencing cycles of feed deprivation and re-feeding in young yellow catfish (Pelteobagrus fulvidraco R.)
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G Ruan   , Q Wan , F Yao , Y Yang * , J Zhang , L Huang |
| , yangyanou@126.com |
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Abstract: (6681 Views) |
| 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. |
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| Keywords: Amino acid, Compensatory growth, Over compensation, Feed conversion efficiency, Feeding rate, Proximate composition, Yellow catfish |
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Full-Text [PDF 479 kb]
(2410 Downloads)
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Type of Study: Orginal research papers |
Subject:
Biology & physiology
Received: 2015/05/3 | Accepted: 2015/05/3 | Published: 2015/05/3
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