Effect of Varying Carbohydrate Fractions on Growth, Body Composition, Metabolic, and Hormonal Indices in Juvenile Black Carp, Mylopharyngodon piceus
Effect of Varying Carbohydrate Fractions on Growth, Body Composition, Metabolic, and Hormonal Indices in Juvenile Black Carp, Mylopharyngodon piceus
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DOI：
10.1111/jwas.12273
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发表时间：
2016-06
影响因子：
2.8
通讯作者：
Chenglong Wu;Jinyun Ye;Jun’e Gao;Xia Yang;Yixiang Zhang
中科院分区：
文献类型：
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作者：
Chenglong Wu;Jinyun Ye;Jun’e Gao;Xia Yang;Yixiang Zhang
研究了不同碳水化合物组分对青鱼幼鱼生长、体组成、代谢和激素指标的影响。青鱼幼鱼M.云杉（平均重量：1.5 ± 0.05 g）分别饲喂不同水平的饲料有效CHO（0.06、10.65、19.43、28.84、37.91和47.38%），共9 wk。结果表明，二次多项式回归模型显示，当饲料中CHO含量为24.98%时，增重效果最好，饲料中适宜的CHO含量（28.84%）可显著提高肉鸡的最终体重和蛋白质效率（PER），降低饲料转化率（FCR）（P < 0.05）。日粮中添加CHO可逐渐提高肝体指数、全身粗脂肪含量、血浆葡萄糖和甘油三酯含量。糖酵解酶和葡萄糖-6-磷酸脱氢酶的活性随饲料有效CHO的增加而增加。葡萄糖-6-磷酸酶和果糖-1，6-二磷酸酶的活性在10.65%有效CHO时开始下降，在19.43%有效CHO时逐渐恢复到稳定水平。另外，19.43%和28.84%的饲料有效CHO均能提高青鱼血浆脂联素的含量。青灰色。19.43%和28.84%的饲料有效CHO均能显著提高青鱼幼鱼生长激素、胰岛素、ghrelin、神经肽Y、生长抑素I和生长抑素II的mRNA表达水平。piceus，与CHO缺乏的饮食（0.06%）相比。这些结果表明，饲料中适宜的CHO组分含量（19.43-28.84%）可以改善青鱼幼鱼的代谢平衡，促进生长和饲料效率。青灰色。
This study was conducted to investigate the effects of varying carbohydrate (CHO) fractions on growth, body composition, metabolic, and hormonal indices in juvenile black carp, Mylopharyngodon piceus. Juvenile black carp, M. piceus (average weight: 1.5 ± 0.05 g) were fed with graded levels of dietary available CHO (0.06, 10.65, 19.43, 28.84, 37.91, and 47.38%) for 9 wk, respectively. Results showed that the highest weight gain could be obtained at 24.98% dietary CHO using second-order polynomial regression model; and optimal dietary available CHO content (28.84%) could significantly increase the final body weight and the protein efficiency ratio (PER) while reducing the feed conversion ratio (FCR) (P < 0.05). Dietary available CHO could gradually increase the hepatosomatic index, the crude lipid contents in the whole body and the glucose and triglyceride content in the plasma. The activities of glycolysis enzymes and glucose-6-phosphate dehydrogenase could be increased with increasing dietary available CHO. The activities of glucose-6-phosphatase and fructose-1,6-bisphosphatase were firstly decreased at 10.65% dietary available CHO and increased to stable level at 19.43% dietary available CHO. In addition, both 19.43 and 28.84% dietary available CHO could increase the adiponectin contents in the plasma of black carp, M. piceus. Meanwhile, both 19.43 and 28.84% dietary available CHO could significantly increase the mRNA expression levels of growth hormone, insulin, ghrelin, neuropeptide Y, somatostatin I, and somatostatin II in juvenile black carp, M. piceus, compared with the CHO-deficient diet (0.06%). These results suggest that optimal inclusion of dietary CHO fractions (19.43–28.84%) could improve metabolic homeostasis and promote growth and feed efficiency in juvenile black carp, M. piceus.