Grass carp is the world's largest farmed fish.
But also because there are many thorns.
Let foodies love and hate.
Nowadays, grass-eating carp is prone to the problem of stinging.
Maybe it's going to be solved!
from the College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei.
Professor Gao Zexia's team.
Recently successful research has cultivated.
Thornless "grass carp."
Is a "spineless" grass carp completely spiny?
There is not much difference between a spiny grass carp and a "spiny" grass carp in appearance.
However, "spinless" grass carp are not completely spineless.
Compared to ordinary grass carp.
The spine and main spines of the grass carp are still there.
But more than 100 intermuscular spines are missing.
Less of these thorns.
It is the main culprit of everyone's throat that eats fish.
X-ray comparison of ordinary grass carp and "spineless" grass carp.
How do the little thorns disappear?
Professor Gao Zexia's team passed.
Find the key genes that control the occurrence of interscalene spines.
Let the genes not work.
Grass carp can't grow these small spines in their bodies.
Why was the "thornless" grass carp born late?
The spinless crucian carp and the spinless Wuchang fish have long been born.
Huge consumption of grass carp.
The reason why I haven't taken off the little thorn until now.
Because they are "chronic subs".
In the process of research and development.
Professor Gao Zexia's team needs to carry out grass carp.
Generations of breeding and mass selection.
However, the grass carp itself has a long breeding cycle.
In Hubei, it takes 4 years to breed the next generation.
To speed up the progress of the study.
In 2021.
Prof. Gao's team hybridized the F0 generation of grass carp.
Brought to Guangdong, where the climate is warmer.
Promote early sexual maturity of grass carp.
Professor Gao's team spent about two years.
Successfully bred F1 generation grass carp fry.
And more than 500 were screened from it.
Individual grass carp without small spines.
F2 generation individuals bred on this basis.
It's all "thornless" grass carp.
And their offspring will inherit the characteristics of no small spines.
Is grass carp without spines good?
The reporter randomly invited several students to taste.
Everyone said. A little more tender than normal grass carp".
The taste is close to sea bass, with garlic cloves".
You can eat boldly with confidence".
Tested. "Thornless" grass carp protein, trace elements.
The amino acid content of the tube fibers.
It is similar to the common grass carp.
Compared to other freshwater fish.
Grass carp can also be used with lower feed costs.
In exchange for more high-quality protein.
And their excreta composition.
It is also more friendly to the water quality and environment.
We'll be able to do it later.
Don't worry, "dazzle" grass carp