Placeholder Image

Subtitles section Play video

  • By the late 19 sixties, the world's fishermen could no longer keep pace with the growing global demand for shrimp.

  • To solve this problem, commercial shrink farming was born and building on centuries old traditions.

  • Asia has become the modern hub of this intensive form of agriculture.

  • Shrimp hatcheries raised the offspring of their breeding stock through three level stages before selling them to shunt farms, which grow them to market size.

  • As this model demonstrates, the shrimp farm first purifies the sea water it uses through a system of treatment ponds containing fish that feed on micro organisms.

  • The treated water is then pumped to a culture pond in which the juvenile shrimp will grow to maturity.

  • This is what the shrimp looked like, that around two months old, shrimp farms are typically located on the coast, where they can access seawater easily.

  • Organic fertilizer is added to the bed of the culture pond before it's filled.

  • To restore the growing conditions toe optimal levels between harvests.

  • Seawater is pumped into the first treatment pond, where tilapia fish purify the water by consuming the microscopic plankton.

  • Plant matter and fish feces settle at the bottom of the pond, a pump moves water from this first treatment pond to a 2nd 1 for another round of this natural cleaning process.

  • A pump then transfers the water from the second treatment pond to the culture pond wants.

  • The pond is for juvenile shrimp.

  • Purchase from the hatchery could be released.

  • The water's oxygen level is carefully monitored on day oration.

  • Propellers air activated when it drops too low.

  • Weekly water quality test is made on samples drawn from the treatment and culture bonds.

  • Regular monitoring of the culture pond is vital because shrink feces and urine breakdown into ammonia, which is toxic at high levels.

  • The test solution reacts to the concentration of ammonia in the water sample, turning a shade of yellow or green.

  • A color chart translates this into a milligrams of ammonia per liter.

  • Reading another table indicates the safe, dangerous and toxic levels of ammonia.

  • If the reading is above safe levels, thehe Monje is diluted by pumping more treated water into the culture pond.

  • Once a week, a few shrimp are extracted from the culture pond on their livers are examined.

  • The shape of the organ is first assessed before it's viewed under a microscope to evaluate the fat content.

  • Ah, well shaped liver with sufficient fact indicates that the shrimp are in good health.

  • Growing shrimp are fed a natural diet, which includes probiotics tamarind, which is soaked in water.

  • I'm going.

  • These ingredients are added to the shrimps feed, which is a mixture of fishmeal, fish oil, soybean pulp on rice flour.

  • Tamarind maintains the right level of acidity in the shrimps.

  • Guard Theo garlic prevents bacterial buildup in the colon of the probiotic.

  • Solution provides beneficial bacteria, which prevent infections and improves the shrimps.

  • Digestion of nutrients.

  • The three ingredients are blended on liquefying before 100 milliliters of the solution.

  • A rounded per kilogram of shrimp feed four times a day.

  • The food is poured into an automatic feeding machine, which distributes it evenly across the culture bond shrimp feed over the entire 12 hour period, consuming up to 5% of their body weight.

  • After 4 to 5 months.

  • In the culture pond shrimp mature to market size, weighing in at 20 to 30 grams.

  • Once they harvested, the farm drains the culture pond to start the process all over again.

  • And there you go.

  • I hope I've given you all the facts.

By the late 19 sixties, the world's fishermen could no longer keep pace with the growing global demand for shrimp.

Subtitles and vocabulary

Operation of videos Adjust the video here to display the subtitles

B2 shrimp pond culture water treatment ammonia


  • 9 0
    林宜悉 posted on 2020/03/26
Video vocabulary