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动物营养学报 2019, Vol. 31 Issue (3) :1231-1239    DOI: 10.3969/j.issn.1006-267x.2019.03.028
水产营养 Aquaculture Nutrition 最新目录 | 下期目录 | 过刊浏览 | 高级检索 << Previous Articles | Next Articles >>
饲料蛋白质水平对拉萨裸裂尻鱼幼鱼生长、饲料利用、形体指标和肌肉营养成分的影响
曾本和1,2, 张忭忭2, 刘海平1, 王建3, 王万良1, 朱成科2, 牟振波1, 王金林1, 周建设1, 旺久1
1. 西藏自治区农牧科学院, 水产科学研究所, 拉萨 850032;
2. 西藏自治区农牧科学院, 拉萨 850000;
3. 西南大学荣昌校区水产学院, 重庆 402460
Effects of Dietary Protein Level on Growth, Feed Utilization, Morphology Parameters and Muscle Nutritional Components of Schizopygopsis younghusbandi younghusbandi Regan
ZENG Benhe1,2, ZHANG Bianbian2, LIU Haiping1, WANG Jian3, WANG Wanliang1, ZHU Chengke2, MU Zhenbo1, WANG Jinlin1, ZHOU Jianshe1, WANG Jiu1
1. Institute of Fisheries Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850032, China;
2. Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850000, China;
3. Department of Fisheries in Rongchang Compust, Southwest University, Chongqing 402460, China
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摘要 本试验旨在探索饲料蛋白质水平对拉萨裸裂尻鱼幼鱼生长、饲料利用、形体指标和肌肉营养成分的影响。选用初始体重为(22.42±0.56)g的拉萨裸裂尻鱼540尾,随机分成6组,每组3个重复,每个重复30尾鱼。各组分别投喂蛋白质水平为20%、25%、30%、35%、40%、45%的试验饲料。试验期为60 d。结果表明:1)随着饲料蛋白质水平的增加,拉萨裸裂尻鱼的终末体重(FW)、增重率(WGR)、特定生长率(SGR)、蛋白质效率(PER)均呈先升高后降低的变化趋势,而饲料系数(FCR)呈先降低后升高的变化趋势。FW、WGR、SGR均在饲料蛋白质水平为35%组达到最大,显著高于除饲料蛋白质水平为30%组外的其他各组(P<0.05)。PER在饲料蛋白质水平为30%组达到最大,显著高于除饲料蛋白质水平为25%组外的其他各组(P<0.05)。FCR在饲料蛋白质水平为30%时最低,显著低于除饲料蛋白质水平为35%组外的其他各组(P<0.05)。通过二次曲线方程回归分析,WGR、SGR和FCR最优时饲料蛋白质水平分别为34.01%、34.09%和35.31%。2)随着饲料蛋白质水平的增加,拉萨裸裂尻鱼的脏体比(VSI)、肝体比(HSI)和肠体比(VI)均呈先降低后升高的变化趋势,且均在饲料蛋白质水平为35%组取得最小值。饲料蛋白质水平为35%组的VSI显著低于除饲料蛋白质水平为40%组外的其他各组(P<0.05),饲料蛋白质水平为35%组的HSI、VI显著低于除饲料蛋白质水平为30%、40%组外的其他各组(P<0.05)。3)随着饲料蛋白质水平的增加,拉萨裸裂尻鱼的肌肉粗蛋白质含量呈先升高后趋于稳定的变化趋势,在饲料蛋白质水平为40%组达到最高,显著高于饲料蛋白质水平为20%、25%组(P<0.05);粗脂肪含量呈先降低后趋于稳定的变化趋势,在饲料蛋白质水平为35%组达到最低,显著低于饲料蛋白质水平为20%、25%、30%组(P<0.05)。由此可见,适量增加饲料蛋白质水平可提高鱼体生长速度,增加鱼体可食用部分比例,提高肌肉粗蛋白质含量,降低肌肉粗脂肪含量;但饲料蛋白质水平过高,会降饲料利用率,增加饲料成本。在本试验条件下,拉萨裸裂尻鱼适宜饲料蛋白质水平为34.01%~35.31%。
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关键词拉萨裸裂尻鱼   蛋白质水平   生长   形体指标   肌肉营养成分     
Abstract: This experiment was aimed to investigate the effects of dietary protein level on growth, feed utilization, morphology parameters and muscle nutritional components of Schizopygopsis younghusbandi younghusbandi Regan. A total of 540 Schizopygopsis younghusbandi younghusbandi Regan with an initial body weight of (22.42±0.56) g were randomly divided into 6 groups with 3 replicates per group and 30 fish per replicate. Fish in each group were fed experimental groups that the protein levels were 20%, 25%, 30%, 35%, 40% and 45%, respectively. The experiment lasted for 60 days. The results showed as follows:1) the final weight (FW), weight gain rate (WGR), specific growth rate (SGR), protein efficiency ratio(PER) of Schizopygopsis younghusbandi younghusbandi Regan were firstly increased and then decreased with dietary protein level increased, while the feed conversion ratio (FCR) was firstly decreased and then increased. The FW, WGR, SGR in dietary protein level 35% group were the highest, and significantly higher than those in other groups except dietary protein level 30% group (P<0.05). The PER in dietary protein level 30% group was the highest, and significantly higher than that in other groups except dietary protein level 25% group (P<0.05). The FCR in dietary protein level 30% group was the lowest, and significantly lower than that in other groups except dietary protein level 35% group (P<0.05). By regression analysis of regression analysis, the WGR, SGR and FCR obtained optimal value when dietary protein levels were 34.01%,34.09% and 35.31%. 2) The viscerasomatic index (VSI), hepaticsomatic index (HSI) and viserosomatic index (VI) of Schizopygopsis younghusbandi younghusbandi Regan were firstly decreased and then increased with dietary protein level increased, and got the minimum values in dietary protein level 35% group. The VSI in dietary protein level 35% group was significantly lower than that in other groups except dietary protein level 40% group (P<0.05), the HSI and VI in dietary protein level 35% group were significantly lower than those in other groups except dietary protein level 30% and 40% groups (P<0.05). 3) The muscle crude protein content of Schizopygopsis younghusbandi younghusbandi Regan was firstly increased and then tended to stabilize with dietary protein level increased, and got the highest in dietary protein level 40% group, and significantly higher than that in dietary protein level 20% and 25% groups (P<0.05); while the muscle ether extract content was firstly decreased and then tended to stabilize, and got the lowest in dietary protein level 35% group, and significantly lower than that in dietary protein level 20%, 25% and 30% groups (P<0.05). In conclusion, properly increasing the dietary protein level can improve the fish growth rate, increase the edible part of the fish, increase the muscle crude protein content, decreased the muscle ether extract content. But too high dietary protein level can decrease the feed utilization rate, increase feed costs Under this experimental conditions, the suitable dietary protein level of Schizopygopsis younghusbandi younghusbandi Regan is 34.01% to 35.31%.
KeywordsSchizopygopsis younghusbandi younghusbandi Regan,   protein level,   growth,   morphology parameters,   muscle nutritional components     
收稿日期: 2018-08-07;
基金资助:

西藏自治区自然科学基金项目(XZ2017ZRG-47);西藏自治区区财政厅农业科技与服务资金项目(2018SFTG01);西藏自治区科技厅重点研发及转化计划项目(XZ201801NB12);西藏自治区地方引智示范推广项目(542108SF03)

通讯作者 刘海平,副研究员,硕士生导师,E-mail:luihappying@163.com     Email: luihappying@163.com
作者简介: 曾本和(1989-),男,四川内江人,研究实习员,硕士,研究方向为水产动物营养与饲料。E-mail:675426776@qq.com
引用本文:   
. 饲料蛋白质水平对拉萨裸裂尻鱼幼鱼生长、饲料利用、形体指标和肌肉营养成分的影响[J]. 动物营养学报, 2019,V31(3): 1231-1239
. Effects of Dietary Protein Level on Growth, Feed Utilization, Morphology Parameters and Muscle Nutritional Components of Schizopygopsis younghusbandi younghusbandi Regan[J]. Chinese Journal of Animal Nutrition, 2019,V31(3): 1231-1239.
链接本文:  
http://www.chinajan.com/CN/10.3969/j.issn.1006-267x.2019.03.028     或     http://www.chinajan.com/CN/Y2019/V31/I3/1231
 
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