Whether the cultured snakehead contains hormones mainly depends on whether such drugs have been used
Whether the cultured snakehead contains hormones mainly depends on whether such drugs have been used during the breeding period. If hormone drugs have been used, some drugs will generally remain in snakehead, and if they are not used, there will generally be no drug residue. In order to make snakehead grow rapidly, some farmers will feed feed with hormones, which are difficult to eliminate. It is suggested to choose the snakehead that has passed the quarantine inspection.
1. Does the cultured snakehead have hormones?
1. Whether the cultured snakehead contains hormones mainly depends on whether such drugs are used in the breeding process. We can't generalize. If hormone drugs are used, there are usually some drugs left in snakehead. If they are not used, there is usually no drug residue in their bodies.
2. In order to produce economic benefits quickly, some farmers will feed the feed containing hormones when breeding snakehead, which is difficult to eliminate. It is suggested to choose the snakehead that has passed the quarantine inspection.
3. In order to let snakehead spawn and hatch, some farmers will inject oxytocin into snakehead. Oxytocin drugs commonly used in production include fish luteinizing hormone releasing hormone analogue (LRH) and chorionic gonadotropin (HCG).
Second, the difference between snakehead and catfish
1, nickname is different.
(1) snakehead: It is the common name of snakehead, and can also be called snakehead, raw fish, salamander, Cai Yu and snake fish. It is distributed in major water systems in China, and also in the Korean Peninsula and Japan.
(2) Catfish: also known as pond lice, silver carp, sticky fish, pond fish, raw fish, etc. , and distributed all over the world.
2. Different families and genera
(1) snakehead: fishes belonging to the animal kingdom, chordates, kiwis, perciformes, mandarin fish, mandarin fish, mandarin fish.
(2) Catfish: Fish belong to the animal kingdom, Chordata, Vertebrate, Kiwifruit, Silurus and Silurus.
3, the appearance is different
(1) Black snakehead: the body color is gray-black, the front of the body is cylindrical, the back is flat, the head, back and top are dark black, the abdomen is pale white, and there are irregular black patches on both sides; There are two rows of black stripes on the head side, the dorsal fin is almost connected with the caudal fin, and there is no hard ridge, which starts above the base of the pectoral fin and the ventral fin is short.
(2) Catfish: The body color is mostly dark brown and gray-black, with a few dark cloud-like patches. Adult fish have two pairs of whiskers, four of which are * * *. The maxilla must be as long as the end of pectoral fin, and the mandible must be shorter (young fish have three pairs of whiskers, 1 chin whiskers begin to disappear when the body length reaches about 60 mm); There is no scale on the body surface, more mucus, smaller dorsal fin without hard spines, 4-6 fins without fat fins, and the posterior end of gluteal fin is connected with caudal fin.