The main problem with raising gourami fish in our country is the breed. that can only produce females that the market needs 60% “It is well known to Gourami fish farmers that they want more females than males because they grow fast, have good weight and produce eggs that consumers want. Even if farmers want to raise only females But it’s quite difficult to do. Because in nature, gourami fish usually give half male and female offspring. When raised together, it results in less female production that the market wants. The price for the pond was low, while the small-sized males were often processed into animal food, chili paste, or various snacks. In 2019, we began researching all-female gourami fish. To add value to farmers Until it was successful last year,” Bandit Rattanasathian, Research and Development Manager Freshwater Aquaculture Technology Development Office, Charoen Pokphand Public Company Limited, Freshwater Animal Genetic Improvement Center, Khlong Chik Subdistrict, Bang Pa-in District, Phra Nakhon Si Ayutthaya Province Tells about the origins of the development of the all-female gourami breed. This is considered to be the first time that this has been accomplished. “Actually, making only female gourami. This can be done by taking hormones. (17beta-Estradiol) but not many people like to do it. Because the fish must be fed for a long time, the cost is high, and most importantly, the survival rate is low. Therefore, we used a method to organize the chromosome set in gourami. By using an artificial person This is considered to be the first time in the world that a gourami chromosome set has been arranged.” Bandit went on to explain the chromosome set. Using an artificial male or Neomale…starting with giving newborn gourami fish food to eat hormones until they are 60 days old, at which time the gender cannot be separated. This will result in all male gourami fish. that have both xx (female) and xy (male) chromosomes. All fish will have the same characteristics as males, that is, slender, dark-skinned. After that, they are raised for another 7 months and then put to a progeny test to find an artificial male or neomale that Had XX chromosomes that were female before but was transformed into a male And in the last step Bring an artificial breeder that converts from female to male. mixed with normal females by artificial insemination This will result in an average female offspring of up to 98.4%. The distinctive characteristics are strong, durable, fast growing, high survival rate with an average of 85%. Can be raised in both clay ponds and cement ponds. They can be bred every 3 months, produce eggs 2 times a year, and can be kept as breeding stock for 3 years before being retired. This is based on actual experiments by farmers. By releasing 20,000 animals per rai into clay ponds, it was found that the survival rate was as high as 90%, growing quickly, raised for 5-8 months, and able to be caught and sold. It has first rate, good meat, always the same size. The price at the mouth of the pond is higher than the price of general gourami, averaging 10 baht per kilogram. The produce is very satisfactory to the merchants who come to buy at the mouth of the pond. On average, production increased by 10%, price per kg increased by 22%, and costs decreased by 9%. If interested, inquire for details at 0-3572-9482, 0-9722-33311.Kornwat. Vinyl clicks to read. “Agricultural News” More
