Effect Of Starvation and Compensatory Growthon Carcass Quality in Cyprinus Carpio(Linnaeus, 1758)
Subject Areas :
خدیجه ابراهیمی
1
(کارشناس ارشدگروه شیلات، واحد قائمشهر، دانشگاه آزاد اسلامی، قائمشهر. ایران.)
مجید محمدنژاد شموشکی
2
(استادیارگروه شیلات، واحد بندرگز، دانشگاه آزاد اسلامی، بندرگز. ایران.)
روح الله جوادیان
3
(کارشناس ارشدگروه شیلات، واحد قائمشهر، دانشگاه آزاد اسلامی، قائمشهر. ایران)
مجتبی کشاورز دیوکلایی
4
(کارشناس ارشدگروه شیلات، واحد قائمشهر، دانشگاه آزاد اسلامی، قائمشهر. ایران)
علی کاربخش راوری
5
(استادیارگروه شیلات، واحد بندرگز، دانشگاه آزاد اسلامی، بندرگز. ایران)
Keywords: Osmoregulation, Zander, Sander lucioperca, Caspian Sea,
Abstract :
Inroduction and ObjectiveUsually the life duration of the fish species are faced with the problem of starvation naturally. Usually the case in winter, when during long migration to spawning and feeding on the living environment, decreased occur because of different reasons and cause severe loss of body energy reserves in fish.Material and Methods: Experiments were done in five groups and three replications: Control: 5 weeks full feeding Group 1: One week starvation+ One week feeding, group 2: Two weeks starvation+ One week feeding, group 3: Three weeks starvation+ One week feeding, group 4: Four weeks starvation+ One week feeding. The amount of dissolved oxygen was fixed on 5.5 - 6 ppm, the temperature 24-28 0C and pH 7.5 to 8 were so controlled through the experiment. Carps fry were fed during the experimental period in control and compensatory growth times with commercial food (containing: 8.7 % moisture, 11.2 % ash, 32 % protein and 10.5 % fat).Results: The results of carcass qualityshowed thatthere are significant difference at protein, fat, ash and fiber in different groups (PCyprinus carpio fry.
