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Growth yield, carcass traits, biochemical and non- specific immune parameters in grey mullet, Mugil cephalus Linnaeus, 1758 under cyclic starvation and L- carnitine supplementation | ||
| Iranian Journal of Fisheries Sciences | ||
| مقاله 2، دوره 18، شماره 1، فروردین 2019، صفحه 15-29 اصل مقاله (399.02 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22092/ijfs.2018.117512 | ||
| نویسنده | ||
| paria Akbary* | ||
| university of tehran | ||
| چکیده | ||
| The main objective for the present research is to assess effect of cyclic starvation and L- carnitine supplementation on growth (body final weight, hepatosomatic index (HSI), daily growth rate (DGI), feed conversion ratio (FCR) and voluntary feed intake (VFI)), body compositions (crude protein, crude lipid, ash and moisture), biochemical (plasma total protein, glucose, cholesterol, triglyceride and liver glycogen) and immunological (lysozyme activity) parameters in grey mullet. To satisfy foregoing end, number of 240 fish in weight (1.33±0.26 g) were randomly fell into four groups (three replicates, 20 fish per tank). Two groups were fed in daily manner and the other two ones were kept starved for 7 days once in 2 weeks. Two groups diets were fed with carnitine free basal diet and the remaining were fed with 800 mg carnitine kg-1 diet. Cyclic starvation led to significantly decreased body final weight, DGI, FCR, total protein, triglyceride and cholesterol. In contrary, no significant differences were found across all groups for FCR, HIS, glucose, liver glycogen and lysozyme concentrations. At the same time, combined effects of cyclic starvation and carnitine supplementation were manifested in DGI and VFI parameters. In light of the above results, it can be noted that in both feeding regimes, growth, feed utilization and carcass quality in grey mullet were increased upon adding 800 mg carnitine kg-1 diet | ||
| کلیدواژه‌ها | ||
| Mugil cephalus؛ cyclic fasting؛ L-carnitine؛ Growth performance؛ Cholesterol؛ lysozyme | ||
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