Growth Performance, Feed Utilisation, Digestive and Metabolic Enzyme Activity, and Liver Morphohistology in Hybrid Tilapia (Oreochromis mossambicus × Oreochromis niloticus) Juveniles Fed with the Inclusion of Chitosan in Their Diet

Author:

Méndez-Martínez Yuniel1ORCID,Vera-Veliz Alan Rodrigo1ORCID,Cortés-Jacinto Edilmar2ORCID,Cruz-Quintana Yanis3ORCID,Botello-Leon Aroldo4ORCID,Mendoza-Carranza Pedro Daniel1,Calvo Natalia S.5ORCID

Affiliation:

1. Facultad de Ciencias Pecuarias y Biológicas, Universidad Técnica Estatal de Quevedo (UTEQ), Av. Quito Km. 1 1/2 via a Santo Domingo de los Tsachilas, Quevedo 120301, Los Rios, Ecuador

2. Programa de Acuicultura, Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Av. Instituto Politecnico Nacional #195, Playa Palo de Santa Rita Sur, La Paz 23096, Baja California Sur, Mexico

3. Grupo de Investigación en Sanidad Acuícola, Inocuidad y Salud Ambiental (SAISA), Departamento de Acuicultura, Pesca y Recursos Naturales Renovables, Facultad de Acuicultura y Ciencias del Mar, Universidad Técnica de Manabí (UTM), c/Gonzalo Loor Velasco s/n, Bahia de Caraquez 130104, Manabi, Ecuador

4. Facultad de Ciencias Agropecuarias, Universidad Técnica Luis Vargas Torres de Esmeraldas (UTLVTE), Km 18 via Aeropuerto, San Mateo 080150, Esmeraldas, Ecuador

5. Instituto Nacional de Limnología (UNL-CONICET), Ciudad Universitaria, Paraje El Pozo s/n, Santa Fe 3000, Argentina

Abstract

This study aimed to evaluate the growth performance, feed utilisation, digestive and metabolic enzyme activity, and liver histology in juveniles of hybrid red tilapia (Oreochromis mossambicus × Oreochromis niloticus) fed with the inclusion of chitosan in their diet. Six dietary chitosan levels (0 “control’’, 10, 20, 30, 40, and 50 g kg−1) were used to feed juvenile fish (initial weight 7.50 ± 0.20 g) that were cultured for eight weeks in 18 tanks at a density of 15 fish/tank. The growth performance presented significant differences (p ˂ 0.05) for weight gain, specific growth rate, feed conversion ratio, hepatosomatic index, and survival rate. The digestive and metabolic enzyme activities were significantly (p < 0.05) influenced by the levels of chitosan in the administered diet. Histologically, no damage was found in the liver; however, morphometrically, a significant difference (p < 0.05) was found in the hepatocyte area and sinusoid area. Vacuolisation of hepatocytes was found in treatments with 40 and 50 g kg−1 of chitosan in the diet. Treatments with doses of chitosan showed a better response (p < 0.05) compared to the control treatment in most of the different groups of variables analysed. The result of the principal component analysis suggests that a diet containing 40 g kg−1 of chitosan is optimal for tilapia growth performance.

Funder

Universidad Técnica Estatal de Quevedo

Publisher

MDPI AG

Subject

Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3