尼罗罗非鱼（）投喂添加番石榴和刺梨叶提取物的饲料的体长-体重关系和体况系数。

Length-weight relationship and condition factor of Nile tilapia ( ) fed diets supplemented with guava and star gooseberry leaf extract.

机构信息

Aquaculture and Aquatic Resources Management (AARM), Department of Food, Agriculture and Bioresources, School of Environment, Resources, and Development, Asian Institute of Technology, Khlong Nueng, Pathum Thani, 12120, Thailand.

Centre of Excellence in Wildlife, Exotic and Aquatic Animal Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.

出版信息

F1000Res. 2024 Oct 23;13:540. doi: 10.12688/f1000research.145369.1. eCollection 2024.

DOI:10.12688/f1000research.145369.1

PMID:39246825

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11380074/

Abstract

BACKGROUND

Nile tilapia ( ) is predominant cultured species in aquaculture. However, there is a scarcity of literature regarding relationship between guava and star gooseberry leaf extract and the condition factor. Thus, the present study aims to investigate the effect of guava and star gooseberry leaf extract-supplemented diets on the specific growth rate, length-weight relationship, and condition factor of Nile tilapia.

METHODS

Six hundred and thirty Nile tilapia (8.7±0.4 g) were randomly distributed among twenty-one tanks (30 fish per tank) within a recirculation system. Over a 60-day period, the fish were fed diets supplemented with 5g/Kg and 10g/Kg of guava leaf extract (GLE-5, GLE-10), star gooseberry leaf extract (SGLE-5, SGLE-10), and a mixture of both (MxLE-5, MXLE-10). Subsequently, specific growth rate, length-weight relationship, and condition factor were determined.

RESULTS

After 60 days, the specific growth rate was significantly higher in all the GLE, SGLE, and MxLE groups compared to the control group. The final lengths and weights differed significantly both in the control group and all the GLE, SGLE, and MxLE groups. The analysis of the regression equation indicated a positive correlation (r = 0.970, 0.977, 0.976, 0.974, 0.974, 0.974, and 0.969) between the length and weight of Nile tilapia in the control group and in all the GLE, SGLE, and MxLE groups. The regression exponent " " values in all the GLE, SGLE, and MxLE groups were >3, indicating a positive allometric growth pattern in Nile tilapia compared to the control ( =2.866), which exhibited a negative allometry. The final condition factor values did not differ significantly in either the control group or any of the plant extract groups.

CONCLUSIONS

Nile tilapia exhibited positive allometric growth patterns and maintained good health when fed with GLE, SGLE, and MxLE groups. Therefore, these plant extracts demonstrate suitability for commercial Nile tilapia production.

摘要

背景

尼罗罗非鱼（）是水产养殖中主要的养殖品种。然而，关于番石榴和五星果叶提取物与肥满度的关系的文献却很少。因此，本研究旨在探讨添加番石榴和五星果叶提取物的饲料对尼罗罗非鱼特定生长率、体长与体重关系和肥满度的影响。

方法

将 630 条尼罗罗非鱼（8.7±0.4 g）随机分配到 21 个循环系统的水族箱中（每个水族箱 30 条鱼）。在 60 天的时间里，给鱼喂食添加了 5g/Kg 和 10g/Kg 番石榴叶提取物（GLE-5、GLE-10）、五星果叶提取物（SGLE-5、SGLE-10）和两者混合物（MxLE-5、MXLE-10）的饲料。随后，测定特定生长率、体长与体重关系和肥满度。

结果

60 天后，所有 GLE、SGLE 和 MxLE 组的特定生长率均显著高于对照组。对照组和所有 GLE、SGLE 和 MxLE 组的最终体长和体重均有显著差异。回归方程分析表明，对照组和所有 GLE、SGLE 和 MxLE 组的尼罗罗非鱼的体长与体重之间呈正相关（r = 0.970、0.977、0.976、0.974、0.974、0.974 和 0.969）。所有 GLE、SGLE 和 MxLE 组的回归指数“b”值均大于 3，表明尼罗罗非鱼的生长呈正异速生长模式，与对照组（b=2.866）相比呈负异速生长模式。对照组和任何植物提取物组的最终肥满度值均无显著差异。