Threonine levels are likely higher in your fresh pullet eggs - which helps with membrane formation. They are also fresher, the aminoacids haven't begun to degrade as badly.
I did do my own research, linked above. Did not support your claims.
I understand the concept of essential aminoacids - BYC is littered with my posts on the need for them in response to various "make at home" feed recipes, =U_Stormcrow&o=relevance']as even a trivial search will reveal.
...is key to connective tissue formation - the skin, tendons, digestive system. Its also like the engine on a train, in thatMet is the first aminoacid in line during protein formation. No Met and you have a railyard full of cars that can't make a train - every other aminoacid present is...
...(most people stop here, and honestly, a lot of times, you can stop here bcuase the feed is clearly deficient). Second part, what is the aminoacid profile of that crude protein? Not all proteins are the same.
Weak yolks is suggestive of weak membranes. Do your fresh, just laid eggs (when...
Linking by request (and invitation) - on the math regarding differences in Crude Protein and AminoAcid profiles between "Layer" formulations and "Meatbird" formulations.
Too much Methionine is WELL above the levels you will get from adding some whey powder to your feed. and as @saysfaa correctly noted above (and has linked in the past), many recipes from the 1960s and before depended upon it as an animal protein source.
The typical chicken feed has 0.3%...
...reducing tryptophan levels. The opposite is readily apparent in the chart from the study I linked. and while glyphosate did reduce SOME aminoacids which, like Tryp, are called aromatic AAs, unlike tryp, they are not ESSENTIAL aminoacids.
With respect, it appears that either:
A) you did...
...is relatively new compared to measuring other AAs, most old studies (and some newer) will instead reference SAAs - Sulphur containing AminoAcids. It still requires specialized equipment, and commands a price premium, albeit much less than it once did. One common lab charges an extra $120...
ABSOLUTELY true. Broilers are custom built for extreme growth rates - they need even more nutritionally dense feed than the typical hatchkling or adolescent to do their best.
And yes, there are posters here who will sometimes boost" their normal feed by mixing with a bit of Broiler feed, Game...
The owner of the hatchery is wrong, but I see where they were trying to go with that. On a short lunch break, will try and come back and explain what they were probably trying to say after work when I have more time - if I'm not too tired.
With plant sources, you are looking for three things:
A) signioficant amounts of all of the key Aminos
B) in roughly the correct ratios. There are plenty of plants with Met, for instance - but almost none of them have roughly half as much Met as Lys.
C) with enough protein overall that it can...
...be measured in the typical back yard flock. Example - one study compared a 16% protein feed with a 20% protein feed of nearly identical aminoacid profile (because both the amount and quality of the protein matter - not all protein is the same). End result?? Slightly lower mortality over...
...of spreadsheets out there - most only look at crude protein. That does not a balanced diet make. A few look at the top four critical aminoacids, maybe fat, calcium, phos, but don't go further than that. The data sources on many are highly suspect.
If you are truly serious about making...
...a relatively high Crude Protein level AND that Crude Protein needs to be balanced in a way containing adequate amounts of certain key aminoacids. If it gets those, it can manufacture or synthesize the rest.
This part is wrong (at least, the second part, and partially, the third). There...
...It isn't. Partricularly when dealing with plant proteins, they are almost universally "incomplete" meaning lacking one or more critical aminoacids to make a complete protein. Sadly, the plant world has few good sources of Methionine, and its probably the most critical aminoacide for...
...crude protein. 16% crude protein is (in the US) generally considered the absolute minimum in protein - the EU gets by on less with reater aminoacid supplimentation. 18% is a common "middle ground".
Over 20% crude protein has only very limited benefit for most chickens at most ages and is...
Soybean meal is one of the best inexpensive sources of Methionine - a criitical, perhaps the most critical, limiting aminoacid in poultry feed, Its also a source of low fat concentrated protein.
Suggest you find other youtube channels.