Santos Lilian D Dos, Zadinelo Izabel V, Silva Lilian C R DA, Zilli Rogério L, Barreiros Marco Antonio B, Mauerwerk Marlise T, Meurer Fábio
Programa de Pós-Graduação em Aquicultura e Desenvolvimento Sustentável, Universidade Federal do Paraná/UFPR, Setor Palotina, Rua Pioneiro, 2153, 85950-000 Palotina, PR, Brazil.
Programa de Pós-Graduação em Zootecnia, Universidade Estadual do Oeste do Paraná, Campus Marechal Cândido Rondon, Rua Pernambuco, 1777, 85960-000 Marechal Cândido Rondon, PR, Brazil.
An Acad Bras Cienc. 2019 May 23;91(2):e20180297. doi: 10.1590/0001-3765201920180297.
The aim of this study was to evaluate the production performance of Nile tilapia post-larvae and fingerlings fed with increasing levels of alcoholic extract of propolis into diets. In Experiment 1, 1800 post-larvae were distributed in 30 tanks, in a completely randomized design with five treatments composed by the inclusion of 0, 1, 2, 3 and 4 g of dry propolis/kg of feed, and six replicates. In experiment 2, 1600 fingerlings were distributed in the same system and designed as experiment 1. No significant effect was observed between treatments, for final weight, total and standard length, survival, and intestinal villus height. However, the propolis extract inclusion of 1 g/kg in Nile tilapia post-larvae and fingerlings' feed resulted in a better body condition factor and higher body protein deposition (p<0.05). The condition factor is an estimate for the future growth of the animals, possibly the fish treated with propolis extract will present better growth, survival and greater reproductive potential rates. The results of the present study demonstrate that alcoholic extract of propolis improves the nutritional condition of Nile tilapia post-larvae and fingerlings, potentially leading to increased productivity in subsequent stages, as well as leading to improvement in fingerlings muscle deposition.
本研究的目的是评估在尼罗罗非鱼仔鱼和幼鱼日粮中添加不同水平蜂胶酒精提取物后的生产性能。在实验1中，1800尾仔鱼被分配到30个水箱中，采用完全随机设计，有五种处理方式，分别在每千克饲料中添加0、1、2、3和4克干蜂胶，每种处理重复六次。在实验2中，1600尾幼鱼以与实验1相同的系统进行分配和设计。在最终体重、全长、标准体长、存活率和肠绒毛高度方面，各处理之间未观察到显著影响。然而，在尼罗罗非鱼仔鱼和幼鱼饲料中添加1克/千克的蜂胶提取物，可使鱼体状况因子更好，鱼体蛋白质沉积更高（p<0.05）。状况因子是对动物未来生长的一种估计，用蜂胶提取物处理的鱼可能会有更好的生长、存活率和更高的繁殖潜力。本研究结果表明，蜂胶酒精提取物可改善尼罗罗非鱼仔鱼和幼鱼的营养状况，有可能在后续阶段提高生产力，并改善幼鱼的肌肉沉积。
