Stress Factors in Hatchery Environment
The tiny, fragile larvae of shrimp are extremely prone to stress factors. Water quality parameters that influence the metamorphosis and health of crustacean larvae, such as temperature, pH, dissolved oxygen and ammonia fluctuate widely. Toxic metabolites such as ammonia, nitrite and sulfites accumulate in the tanks as the larvae grow. Hatchery practices like water exchange, crowding, transferring and handling introduce microbial pathogens into the culture systems. When unfavorable environmental factors combine with microbial pathogens, the result is stress that leads to poor growth, weak larvae, disease and mortality.
DESCRIPTION
Efinol EL is a combination of microbial cultures and selected nutrients for use in shrimp and other crustacean hatcheries at life stages (zoea to mysis) that depend on live algal feeding. This combination has been scientifically shown to counteract the stressful conditions of hatcheries and improve health and survival of early crustacean larvae.
FEATURES
• Efinol EL is an ideal combination of proven bacteria and yeasts and selected nutrients that work synergistically to promote early larval health and performance in hatcheries.
• Efinol EL is easy-to-use. It can be readily mixed directly into the larval tanks or transportation bags.
• Efinol EL is compatible with live-algae, probiotics and medications used in hatcheries.
BENEFITS
• Efinol EL helps to reduce stress and improve survival rates.
• Efinol EL is highly effective under conditions of stress such as temperature changes, salinity changes and transport.
• Efinol EL helps to produce stronger and healthier larvae .
• Efinol EL does not interfere with live algal growth in hatchery tanks.
• Efinol EL is convenient, safe, non-toxic and economical in use.
COMPOSITION
Efinol EL is composed of beneficial microbes like:
Bacillus subtilis
Bacillus licheniformis
Lactobacillus acidophilus
Saccharomyces cerevisiae
along with selected vitamins, minerals, free- flow and anti-caking agents.
APPLICATION & USAGE RATES
Efinol® EL is recommended for use directly in water. There is no need to pre-treat the product before application.
Lifestage |
g/ton of water/day |
Nauplii, Zoea |
5 |
Early Mysis |
6 |
Late Mysis |
8 |
***Example:
Volume of water in tank: 10 tons
Life stage of shrimp: Zoea
Efinol® EL usage rate: 5g/ton water/day
Amount of Efinol® EL per day = 10 tons x 5 g/ton = 50 g
• To be added once a day at first feeding after water exchange.
APPEARANCE
Efinol® EL is off-white to tan colored free flowing powder, with a bland odor. Change in product color does not affect product performance.
STABILITY
Efinol® EL is stable for 12 months from the date of manufacture.
STORAGE
Efinol® EL should be stored in a cool dry place away from sunlight. Keep the container closed when not in use.
PRESENTATION
Efinol® EL is available in 500 g pouches.
COMPATIBILITY
Efinol® EL is compatible for use with all commonly used additives in hatcheries including live algae.
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