کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8495241 | 1552860 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Feed intake, feed utilization and feeding-related gene expression response to dietary phytic acid for juvenile grass carp (Ctenopharyngodon idellus)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Feed intake, feed utilization and feeding-related gene expression response to dietary phytic acid for juvenile grass carp (Ctenopharyngodon idellus) Feed intake, feed utilization and feeding-related gene expression response to dietary phytic acid for juvenile grass carp (Ctenopharyngodon idellus)](/preview/png/8495241.png)
چکیده انگلیسی
The negative effect of dietary phytic acid (PA) in feed intake is a common feature of response to stress in fish, but the regulation mechanism of feed intake is poorly understood. Our study was therefore conducted to estimate the effects of dietary PA on feed intake, feed utilization and feeding-related gene expression in juvenile grass carp. The levels of dietary PA supplementation were 0 (control), 5 (low) and 40 (high) g kgâ 1 diet, respectively. Triplicate groups (nine 300-L tanks) of grass carp (mean weight, 22.37 ± 0.16 g) were fed twice daily (08:00 and 16:00 h) to satiation for 8 weeks. Supplemental PA decreased the weight gain, feed intake, feed utilization and digestive enzyme activities of grass carp. Dietary PA supplementation decreased the apparent digestibilities of phosphorus, calcium and crude protein. The gene expression levels of cocaine- and amphetamine-regulated transcript (CART) and cholecystokinin (CCK) in the brain were enhanced with the increase of dietary PA supplementation. However, the neuropeptide Y (NPY) and ghrelin mRNA expression levels were reduced in fish fed with low PA, but increased significantly (P < 0.05) in fish fed with high PA compared to the control. No significant differences were observed in the gene expressions of NPY receptors Y8a and Y8b among all the groups. The results of this study indicated that the decrease of feed utilization and the increase of CART and CCK gene expressions in the brain might be the main factors for the decrease of feed intake in grass carp caused by dietary PA supplementation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquaculture - Volumes 424â425, 20 March 2014, Pages 201-206
Journal: Aquaculture - Volumes 424â425, 20 March 2014, Pages 201-206
نویسندگان
Liwei Liu, Xu-Fang Liang, Jie Li, Xiaochen Yuan, Yi Zhou, Yan He,