Cymbopogon flexuosus essential oil as an additive improves growth, biochemical and physiological responses and survival against Aeromonas hydrophila infection in Nile tilapia
Document title: Cymbopogon flexuosus essential oil as an additive improves growth, biochemical and physiological responses and survival against Aeromonas hydrophila infection in Nile tilapia
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000436151
ISSN: 0001-3765
Authors: 1
1
2
2
2
3
1
Institutions: 1Universidade Federal da Bahia, Programa de Pos-Graduacao em Zootecnia, Salvador, Bahia. Brasil
2Universidade Federal do Vale do Sao Francisco, Petrolina, Pernambuco. Brasil
3Universidade Federal da Bahia, Barra, Bahia. Brasil
Year:
Volumen: 92
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The objective of the present study was to evaluate growth, biochemical, hematological and intestinal enzymes responses and survival of Nile tilapia juveniles fed a diet containing the essential oil of lemongrass Cymbopogum flexuosus (EOCF) and infected by Aeromonas hydrophila. Five diets were evaluated (in quadruplicate) with increasing levels of EOCF (0.0 - control; 0.25; 0.50; 1.0 and 2.0 mL kg diet-1). On day 45, eight fish per treatment were sampled and blood, liver and intestine samples were taken. Others eight fish per treatment were infected with A. hydrophila followed by a 15-day period of observation. Citral is the main constituent of EOCF. The inclusion of 2.0 mL EOCF kg diet-1 increased specific growth rate and survival after A. hydrophila infection and decreased feed conversion ratio of Nile tilapia. In general, higher concentrations of EOCF in the diet reduced plasma glucose and triglycerides levels, and increased plasma amino acids, alanine aminotransferase (ALT) and hepatic ALT levels, hematological parameters, and the activity of intestinal enzymes. It was concluded that the inclusion of 2.0 mL EOCF kg diet-1 improved growth performance, biochemical and physiological responses and decreased mortality of Nile tilapia after A. hydrophila infection
Disciplines: Medicina veterinaria y zootecnia
Keyword: Peces,
Medicina veterinaria,
Infección experimental,
Tilapia,
Aeromonas hydrophila,
Citral,
Cymbopogon flexuosus,
Parámetros hematológicos,
Sobrevivencia,
Crecimiento
Keyword: Fish,
Veterinary medicine,
Experimental infection,
Tilapia,
Aeromonas hydrophila,
Citral,
Cymbopogon flexuosus,
Hematological parameters,
Survival,
Growth
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