کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5540864 | 1553607 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of dietary leucine on the growth performances, body composition, metabolic abilities and innate immune responses in black carp Mylopharyngodon piceus
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کلمات کلیدی
EAAcomplement component 9MS 222GRLMylopharyngodon piceusIBWFBWNEAAPDRLAPhEPCFCRSGRNPYHmbALTIFN-αAST - آسپارتات ترانس آمینازAspartate aminotransferase - آسپارتات ترانس آمیناز یا AST alanine transaminase - آلانین ترانس آمینازamino acid - آمینو اسیدBranched-chain amino acid - آمینو اسید زنجیره ایLeucine aminopeptidase - آمینوپپتیداز لوسینEssential amino acid - اسید آمینه ضروریnonessential amino acid - اسید آمینه غیر ضروریWeight gain - افزایش وزنFER - انجام دهیدinterferon α - اینترفرون αBCAA - بی سی ای ایcomplement component 3 - جزء مکمل 3per - در هرProtein efficiency ratio - راندمان پروتئینGrowth performance - عملکرد رشدLeucine - لوسینLYZ - لیزlysozyme - لیزوزیم feed efficiency ratio - نسبت بازده خوراکfeed conversion ratio - نسبت تبدیل خوراکHepcidin - هپسیدین initial body weight - وزن اولیه بدنfinal body weight - وزن نهایی بدنInnate immune responses - پاسخ های ایمنی فراگیرnatural resistance associated macrophage protein - پروتئین ماکروفاژ مرتبط با مقاومت طبیعیNramp - چرت زدنGhrelin - گرلینNeuropeptide Y - یوروپروتئین Y
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The present study was focused on the growth, body composition, metabolic abilities and innate immune responses in juvenile black carp Mylopharyngodon piceus fed with six levels of dietary leucine (7.3, 12.4, 16.2, 21.9, 28.3 and 34.5 g kgâ1) for 9 weeks. Results showed that the highest weight gain (WG) and the lowest feed conversion ratio (FCR) was obtained at 23.5 and 23.9 g kgâ1 dietary leucine using second-order polynomial model, respectively. Adequate dietary leucine content (21.9 and 28.3 g kgâ1) could significantly up-regulate the expression levels of neuropeptide Y (NPY) and ghrelin (GRL) in the brain of black carp juveniles. The protein efficiency ratio (PER), feed efficiency ratio (FER) and protein deposition ratio (PDR) were also significantly increased by adequate dietary leucine content (21.9 and 28.3 g kgâ1) (p < 0.05). Adequate dietary leucine content (21.9 and 28.3 g kgâ1) could significantly up-regulate the activities of metabolic enzymes, such as α amylase, trypsin, chymotrypsin and elastase in the liver of Black carp (p < 0.05). However, the activities of alanine transaminase (ALT), aspartate aminotransferase (AST) and leucine aminopeptidase (LAP) were significantly reduced in the fish serum by adequate dietary leucine content (21.9 and 28.3 g kgâ1) compared with leucine-deficient diet (7.3 and 12.4 g kgâ1). In addition, 21.9 and 28.3 g kgâ1 dietary leucine could significantly increase complement component 3 (C3) and C4 contents, lysozyme (LYZ) activities in the serum compared with the leucine-deficient diet (7.3 and 12.4 g kgâ1) (p < 0.05). Furthermore, optimal dietary leucine could also significantly up-regulate the mRNA expression levels of LYZ, interferon α (IFN-α), hepcidin (HEPC), natural resistance-associated macrophage protein (NRAMP), C3 and C9 in the blood of juvenile black carp compared with the leucine-deficient diets (7.3 and 12.4 g kgâ1) (p < 0.05). In conclusion, these results suggest that adequate dietary leucine (21.9 and 28.3 g kgâ1) could increase growth performances, improve metabolic abilities and then enhance non-specific immunities in black carp juveniles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fish & Shellfish Immunology - Volume 67, August 2017, Pages 419-428
Journal: Fish & Shellfish Immunology - Volume 67, August 2017, Pages 419-428
نویسندگان
Chenglong Wu, Lian Chen, Zhibin Lu, Jun'e Gao, Yudan Chu, Liang Li, Ming Wang, Geying Zhang, Miaotong Zhang, Jinyun Ye,