Essential oil from <i>Ocimum basilicum</i> improves growth performance and does not alter biochemical variables related to stress in pirarucu <i>(Arapaima gigas)</i>

CHUNG, SAMANTHA; LEMOS, CARLOS H. DA P.; TEIXEIRA, DANIEL V.; FORTES-SILVA, RODRIGO; COPATTI, CARLOS E.

doi:10.1590/0001-3765202020181374

home Table of contents navigate_before previous current next navigate_next

home Table of contents

AGRARIAN SCIENCES • An. Acad. Bras. Ciênc. 92 (suppl 1) • 2020 • https://doi.org/10.1590/0001-3765202020181374 linkcopy

Essential oil from Ocimum basilicum improves growth performance and does not alter biochemical variables related to stress in pirarucu (Arapaima gigas)

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Diet supplementation with essential oil from sweet basil Ocimum basilicum (EOOB) can increase fish growth. So, this study aimed to evaluate the effect of EOOB in the diet on growth performance and plasmatic variables of pirarucu juveniles (Arapaima gigas) submitted to stressful condition (stocking density of 7.56 kg m^-3per tank and limited space). Four diets (in triplicates) were evaluated with increasing levels of EOOB (0.0 control; 0.5; 1.0; and 2.0 mL kg diet^-1) over 48 days. Linalool was the major constituent of EOOB (54.19%). The addition of 2.0 mL EOOB kg diet^-1 improved final weight, weight gain, specific growth rate, condition factor and feed conversion ratio; it also decreased plasma urea levels and increased plasma albumin and total proteins levels. Plasma glucose, cortisol, and acid uric levels were not influenced by the addition of EOOB to the fish diet. In conclusion, the addition of 2.0 mL EOOBkg diet^-1 is recommended for pirarucu juveniles, due to improved growth performance, and this supplementation did not compromise the homeostasis of fish rearing in a high stocking density.

Key words
fish diet; glucose; growth promoter; high stocking density; linalool; metabolic response

Chemical compound	IK^c	IK^t	%
β-Myrcene	990	985	0.59
Eucalyptol	1031	1031	4.91
β-trans-ocimene	1048	1048	0.80
Linalool	1099	1101	54.19
Camphor	1142	1146	0.86
(-)-Bornyl acetate	1285	1284	1.45
p-Eugenol	1356	1356	4.96
β-Elemen	1386	1394	0.54
α-bergamotene	1437	1436	5.24
Germacrene D	1455	1453	1.07
α-amorphene	1483	1490	2.45
δ-Guaiene (α-bulnesene)	1507	1505	2.08
γ-Cadinene	1515	1514	2.60
T-Cadinol	1640	1640	3.24
Identified Compounds			85.02

Variables	EOOB (mL kg diet^-1)				p
	0.0	0.5	1.0	2.0
Initial W	955.00±14.42	944.10±22.49	936.10±7.72	951.00±11.17	NS
Final W	1401.25±26.35	1406.00±59.28	1398.50±19.90	1515.00±5.07	NS
WG	446.25±23.86^b	461.90±38.16^ab	462.40±12.75^ab	564.00±12.94^a	0.037
Final L	61.00±1.13	61.80±0.88	60.70±0.67	61.60±0.68	NS
SGR	0.79±0.04^b	0.82±0.08^ab	0.84±0.02^ab	0.97±0.03^a	0.025
CF	0.19±0.01	0.19±0.02	0.21±0.01	0.24±0.01	NS
FCR	1.93±0.04^a	1.78±0.12^ab	1.81±0.08^ab	1.46±0.11^b	0.029

Variables	EOOB (mL kg diet^-1)				p
	0.0	0.5	1.0	2.0
Cortisol	42.70±3.73	53.03±4.04	46.69±3.75	45.82±3.92	NS
Glucose	46.64±1.68	52.11±2.42	46.56±3.02	52.73±2.99	NS
Albumin	0.64±0.02^b	0.66±0.04^ab	0.65±0.03^b	0.74±0.02^a	0.045
Total proteins	3.12±0.03^b	3.13±0.05^b	3.11±0.11^b	3.48±0.06^a	0.009
Urea	8.01±0.94	7.12±0.81	6.90±0.64	6.45±0.02	NS
Uric acid	0.15±0.01	0.17±0.02	0.17±0.02	0.16±0.02	NS

vertical_align_top show_chart

more_horiz close
- image
- translate
- link
- article
- vertical_align_top
- file_download
- show_chart
- image
- translate
- link
- article

location_on

Academia Brasileira de Ciências Rua Anfilófio de Carvalho, 29, 3º andar, 20030-060 Rio de Janeiro RJ Brasil, Tel: +55 21 3907-8100 - Rio de Janeiro - RJ - Brazil
E-mail: aabc@abc.org.br

rss_feed Stay informed of issues for this journal through your RSS reader

[tfnII] Initial W (initial weight), Final W (final weight) and WG (weight gain) are expressed in g. Final L (final length) is expressed in cm, SGR (specific growth rate) is expressed as % per day and, and CF (condition factor) is expressed as g cm^-3*100. FCR = feed conversion ratio. Different letters indicate statistical difference between treatments (Tukey’s test, p< 0.05; n = 3 tanks per treatment). NS = No significant.