Immune response in sexual inverted and non-inverted Nile tilapia fingerlings supplemented with organic acid and essential oil.

The development and intensification of tilapia farming depends on the manipulation of some physiological functions, such as the sexual inversion of larvae using a synthetic androgen (17α-methyltestosterone). This inversion, however, may represent a potential oxidative stress factor and cause damage to animals in the short, medium, and long term. Dietary supplementation of natural antioxidant compounds is an interesting alternative to combat such damage.

Effect of an homeopathic complex on fatty acids in muscle and performance of the Nile tilapia (Oreochromis niloticus).

Background: The homeopathic complex HomeoAqua Mega 3(®) was designed to stimulate fish liver function resulting in enhanced lipid metabolism and improved overall performance. The effect of the complex in fatty acid compounds in the muscle tissues and the performance of Nile tilapia (O. niloticus) were evaluated.

Morpho-functional response of Nile tilapia (Oreochromis niloticus) to a homeopathic complex.

Background: This study evaluated the performance, prevalence of ectoparasites and morpho-functional response of the liver and the branchiae of Nile tilapia (Oreochromis niloticus) raised on fish meal with added of the homeopathic complex Homeopatila 100(®) at different concentrations.

Methods: Post-reversed juvenile Nile tilapia (O. niloticus) of the GIFT (Genetic Improvement of Farmed Tilapia) strain were used in this study.

[Ectoparasites of the Nile tilapia (Oreochromis niloticus) bred in net-tanks in the Corvo and Guairacá rivers, state of Paraná, Brazil].

Current experiment estimates the prevalence of ectoparasites of the Nile s tilapia (Oreochromis niloticus), strain Chitralada, bred in net-tanks during 130 days, from April to August 2006, and reports on the water's physical and chemical parameters. Three hundred and eighty-seven samples of tegumentary scrapes and branchia of post-reversed males were analyzed. Experiment was conducted in thirty 6.