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One of the challenges to aquaculture is that reproduction, as an energy intensive endeavor, makes fish grow more slowly. To solve this problem, Prof. Berta Levavi-Sivan at the Hebrew University of Jerusalem identified tiny molecules named Neurokinin B (NKB) and Neurokinin F (NKF) that are secreted by the brains of fish and play a crucial role in their reproduction. Prof. Levavi-Sivan, a specialist in aquaculture at the Hebrew University's Robert H. Smith Faculty of Agriculture, Food and Environment, then developed molecules that neutralize the effect of NKB and NKF. The molecules inhibited fish reproduction and consequently led to increased growth rates.
These inhibitors can now be included in fish feed to ensure better growth rates. For example, young tilapia fed the inhibitors in their food supply for two months gained 25% more weight versus fish that did not receive the supplement. So far, NKB has been found in 20 different species of fish, indicating that this discovery could be effective in a wide variety of species.
Piscine growth hormone.
(Score: 1) by Gault.Drakkor on Thursday June 29 2017, @07:42PM (2 children)
I thought the complete protein thing was debunked?
By no less then the person who originally proposed the theory.
Proposed by Frances Moore Lappe in "Diet for a small Planet". In the tenth edition(1981) she retracted the statement.
Basically some foods don't have enough protein (think some of the starchy roots). But otherwise complete proteins is not an issue for diets based on plants.
(Score: 3, Informative) by DeathMonkey on Thursday June 29 2017, @08:43PM (1 child)
I thought the complete protein thing was debunked?
You definitely need all nine amino acids a.k.a. complete protein. That's well established biology.
But otherwise complete proteins is not an issue for diets based on plants.
If anyone claimed otherwise then that's probably what was debunked. It's absolutely possible to get the required amino acids from a plant-based diet, it's just (arguably) a little harder.
(Score: 1) by Gault.Drakkor on Friday June 30 2017, @12:36AM
Not going to disagree with that.
What I am trying to disagree with is: "rice is not complete". That is if you don't have to combo plants to get a complete protein. You can eat just rice(whole grain) to get complete protein. Or in other words you can exceed daily recommended intake for the 9 essential amino acids with just rice. (and not talking about eating thousands of calories worth either.)