尼罗罗非鱼幼鱼投喂频率的影响（）。

Effects of Feeding Frequency for Nile Tilapia Fingerlings ().

作者信息

Fava Aldo Felipe, de Souza Bezerra Gildete, Neu Dacley Hertes, Bittencourt Fabio, Signor Altevir, Carvalho Kerolay Valadão, Gomes Ricacio Luan Marques, Boscolo Wilson Rogério

机构信息

Universidade Estadual do Oeste do Paraná, Centro de Engenharias e Ciências Exatas, Rua da Faculdade, 354, Toledo, PR, Brazil.

Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Rodovia Dourados-Itahum, Km 12, Cidade Universitária, Dourados, MS, Brazil.

出版信息

Aquac Nutr. 2022 Nov 22;2022:1053556. doi: 10.1155/2022/1053556. eCollection 2022.

DOI:10.1155/2022/1053556

PMID:36860435

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9973146/

Abstract

This study is aimed at assessing the feeding frequency for tilapia fingerlings. 240 fishes were randomly distributed in 24 containers. The feeding consisted of six frequencies: 4 (F4), 5 (F5), 6 (F6), 7 (F7), 8 (F8), and 9 (F9) times a day. The weight gain was significantly higher in F5 and F6 when compared to F4 ( = 0.0409 and 0.0306, respectively). Feed intake and apparent feed conversion did not differ between treatments ( = 0.129 and = 0.451). About water quality, the nitrogen levels in the water from the treatments differed between F4 and F5 ( = 0.0478) and F4 and F6 ( = 0.0283) and for P between F4 and F6 ( = 0.0215) and F4 and F9 ( = 0.0432). The test showed a dependence relationship between feed frequencies and the muscle fibers frequency ( < 22 × 10), prevailing fibers between 10-20 micrometers in F4, F5, F6, and F7 and 30-40 in F8 and F9. The area of the hepatocytes differed only between F5 and F9, while the nucleus area did not. Partial net revenue differed in 10% between F5 and F4 ( = 0.0812) and between F6 and F4 ( = 0.0568). In conclusion, fingerlings fed 5 to 6 times a day have better zootechnical and partial recipes.

摘要

本研究旨在评估罗非鱼幼鱼的投喂频率。240尾鱼被随机分配到24个容器中。投喂包括六种频率：每天4次（F4）、5次（F5）、6次（F6）、7次（F7）、8次（F8）和9次（F9）。与F4相比，F5和F6的体重增加显著更高（分别为 = 0.0409和0.0306）。各处理之间的采食量和表观饲料转化率没有差异（ = 0.129和 = 0.451）。关于水质，处理后的水中氮含量在F4和F5之间（ = 0.0478）、F4和F6之间（ = 0.0283）存在差异，磷含量在F4和F6之间（ = 0.0215）以及F4和F9之间（ = 0.0432）存在差异。检验表明投喂频率与肌纤维频率之间存在依赖关系（ < 22 × 10），F4、F5、F6和F7中10 - 20微米的优势纤维，F8和F9中为30 - 40微米。肝细胞面积仅在F5和F9之间存在差异，而细胞核面积没有差异。F5和F4之间（ = 0.0812）以及F6和F4之间（ = 0.0568）的部分净利润相差10%。总之，每天投喂5至6次的幼鱼具有更好的畜牧学性能和部分配方。