| L-丙氨酰-L-谷氨酰胺对杂交鲟体成分、肠道形态的影响 |
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| 引用本文： | 王常安,李晋南,王连生,赵志刚,徐奇友.L-丙氨酰-L-谷氨酰胺对杂交鲟体成分、肠道形态的影响[J].水产学杂志,2017(2):12-16. |
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| 作者姓名： | 王常安 李晋南 王连生 赵志刚 徐奇友 |
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| 作者单位： | 中国水产科学研究院黑龙江水产研究所,黑龙江 哈尔滨,150070 |
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| 基金项目： | 黑龙江水产研究所基本科研业务费专项(HSY201512)，黑龙江省自然科学基金(QC2015041)，国家自然科学基金项目(31302204) |
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| 摘 要： | 将初始体质量(0.42±0.05)g的杂交鲟(Acipenser schrenckii♀×A.baerii♂)仔鱼饲养在室内循环水养殖系统中,投喂添加0(G1)、0.25%(G2)、0.5%(G3)、0.75%(G4)和1.0%(G5)L-丙氨酰-L-谷氨酰胺(L-AG)的5种等氮饲料,每个处理3个重复,每个重复1500尾鱼,研究L-AG水平对杂交鲟体成分和十二指肠形态的影响。56d的养殖结果表明:饲料中添加0.25%和5.0%L-AG对全鱼粗蛋白含量影响不显著(P0.05),但添加0.75%和1.0%L-AG显著提高了全鱼粗蛋白含量(P0.05)。添加0.25%~1.0%L-AG对全鱼水分、粗脂肪和灰分含量影响不显著(P0.05)。与对照组相比,添加0.25%~1.0%L-AG对肠道绒毛高度、微绒毛高度和肌层厚度均未产生显著影响(P0.05)。结果表明:外源补充0.75%~1.0%L-AG可显著提高杂交鲟仔鱼粗蛋白含量,但添加0.25%~1.0%L-AG对十二指肠形态不产生显著影响。
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| 关 键 词： | 杂交鲟 L-丙氨酰-L-谷氨酰胺 体成分 十二指肠形态 |
Effects of Dietary L-Alanyl-L-Glutamine Supplementation on Body Composition and Intestinal Morphology of Hybrid Sturgeon Acipenser schrenckii ♀ × A. baerii ♂ |
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| WANG Chang-an,LI Jin-nan,WANG Lian-sheng,ZHAO Zhi-gang,XU Qi-you.Effects of Dietary L-Alanyl-L-Glutamine Supplementation on Body Composition and Intestinal Morphology of Hybrid Sturgeon Acipenser schrenckii ♀ × A. baerii ♂[J].Chinese Journal of Fisheries,2017(2):12-16. |
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| Authors: | WANG Chang-an LI Jin-nan WANG Lian-sheng ZHAO Zhi-gang XU Qi-you |
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| Abstract: | Juvenile hybrid sturgeon(Acipenser schrenckii ♀ × A. baerii ♂)w ith initialbody w eightof(0.42±0.05)g w ere reared in a recirculation system and fed five isonitrogenousand isocaloric dietssupplem ented w ith L-A lanyl-L-G lutam ine (L-A G)ata dose of0% (G 1),0.25% (G 2),0.5% (G 3),0.75% (G 4)or1.0% for56 days w ith triplication to evaluate the effects of(L-A G)on body com position and duodenalm orphology ofthe fish.The results show ed thatthere w ere no significant differences in body crude protein contentin the fish fed the diets containing 0.25% and 5.0% ofL-A G (P>0.05).H ow ever,the fish fed the diets containing 0.75% and 1.0% ofL-A G had increased in body crude protein content(P<0.05),w ithout significantdifferences in body m oisture,crude lipid and ash am ong the groups(P>0.05).N o significantdifferencesin intestinalvillusheight,m icrovillusheightand m uscle thicknessw ere ob-served in the fish am ong the groups (P>0.05).In conclusion,body crude protein w as significantly affected by 0.75% ~ 1.0% L-A G supplem entation,how ever,duodenalm orphology w asnotchanged by 0.25% ~ 1.0% L-A G supplem entation. |
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| Keywords: | hybrid sturgeon L-A lanyl-L-G lutam ine body com position duodenalm orphology |
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