Which amino acids should be considered in low-protein diet additives for pigs?

When formulating low-protein diet additives for pigs, which amino acids generally need to be considered with priority?
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Mainly lysine and threonine! Methionine and cystine, and tryptophan are generally not a problem!!! Looking forward to everyone's answers, let's learn together!!
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Lysine, threonine! Methionine and cystine, tryptophan
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It should be lysine and threonine! Methionine and cystine, and tryptophan are generally not a problem!!! Looking forward to everyone's answers, let's learn together!!
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Ajinomoto of France recommends lysine, methionine, threonine, tryptophan = 100:60:65:22, which is relatively conservative.
A well-known large company in Guangdong now recommends a ratio of 100:65:70:24.

These amino acids are all based on digestible amino acids. Therefore, some effort is needed. In this way, there is absolutely no problem in achieving a crude protein level of 18%. And there is less diarrhea.
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The most troublesome thing is that feed companies in China do not have near-infrared testing, and upstream manufacturers take advantage of us feed mills.
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Generally, just consider these four amino acids.
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Reply to 5#Zhenlong Qiju


This is a very good ratio.
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Then what is the protein content of this feed?
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Ajinomoto of France recommends lysine, methionine, threonine, tryptophan = 100:60:65:22, which is relatively conservative.
A well-known large company in Guangdong now recommends ...
Zhenlong Qiju posted on 2009-10-29 21:42

You can refer to it~~~~~