Abstract
AbstractThe effect of different concentrations of garlic (Allium sativum) powder supplement in fish diet on growth and survival of Pacific white leg shrimp, Litopenaeus vannamei fry was investigated. Shrimp were separated into four experimental groups of 0% (Controls), 2, 4 and 6% concentrations of garlic powder. Garlic supplemented diet did not have any significant effect on weight gain (%), final weight (g) and survival rate (%) of L. vannamei when compared to shrimp in the Control diet. However, feed conversion ratio was significantly (p < 0.05) higher in the Control group (1.94 ± 0.03) than those of the Treated groups. Survival rates of the shrimp fed the diets containing garlic powder were way higher (96–99%) compared to shrimp in the Control diet (91%). It was also observed that the shrimp fed the diet containing 6% garlic powder obtained the highest weight gain (%) of 201.33 ± 0.30% among the other groups. The result of the present study established the potential use of garlic powder as additive in...
Highlights
The search for new feed additives is still a very important point for aquaculture researchers (Cho & Lee, 2012)
At the end of the experiment (60 days), no significant differences were observed in the final weights, WG, and SR of Pacific white leg shrimp fry fed the garlic powder (GP)-supplemented diets and the control diet (p > 0.05; Table 3)
Survival rate of the GP supplemented groups, on the other hand, showed highest result when compared to the Control, having 4% GP supplementation the highest SR (99 ± 2.31%)
Summary
The search for new feed additives is still a very important point for aquaculture researchers (Cho & Lee, 2012). To this effect, researches have directed their attentions towards the functional additives that can be possibly extracted from plant sources. Plant extracts have been reported to favor various activities like antistress, growth promotion, appetite stimulation, enhancement of tonicity and immunostimulation, maturation of culture species, aphrodisiac and anti-pathogen properties in fish and shrimp aquaculture due to active principles such as alkaloids, terpenoids, tannins, saponins, glycosides, flavonoids, phenolics, steroids or essential oils (Chakraborty & Hancz, 2011; Citarasu, 2010). Plant extracts have been shown to improve digestibility and availability of nutrients resulting in an increase in feed conversion and leading to a higher protein synthesis (Citarasu, 2010; Nya & Austin, 2009; Reverter, Bontemps, Lecchini, Banaigs, & Sasal, 2014; Talpur, Ikhwanuddin, & Ambok Bolong, 2013)
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