Compensatory growth, proximate composition and amino acid contents after experiencing cycles of feed deprivation and re-feeding in young yellow catfish (Pelteobagrus fulvidraco R.)
- سال انتشار: 1393
- محل انتشار: مجله علوم شیلات ایران، دوره: 14، شماره: 1
- کد COI اختصاصی: JR_JIFRO-14-1_016
- زبان مقاله: انگلیسی
- تعداد مشاهده: 227
نویسندگان
چکیده
The compensatory growth, proximate composition and amino acid contents changes of young yellow catfish (Pelteobagrus fulvidraco R.) (۱.۶۳-۱.۶۹ g) had been investigated using a ۴۵-day cyclic feed deprivation and re-feeding experiment. The control group (S۰) was fed daily with live tubificid worms (Limnodrilus hoffmeisteri), while the S۱/۴, S۱/۲, and S۱/۱ 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., S۱/۴) compared with more intense deprivation (i.e., S۱/۱) 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.کلیدواژه ها
Amino acid, Compensatory growth, Over compensation, Feed conversion efficiency, Feeding rate, Proximate composition, Yellow catfishاطلاعات بیشتر در مورد COI
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