{"id":3466,"date":"2026-10-05T11:03:07","date_gmt":"2026-10-05T11:03:07","guid":{"rendered":"https:\/\/ndrgkokalenterprise.com\/dl-methionine-vs-l-lysine-feed-amino-acids\/"},"modified":"2026-10-05T11:03:07","modified_gmt":"2026-10-05T11:03:07","slug":"dl-methionine-vs-l-lysine-feed-amino-acids","status":"publish","type":"post","link":"https:\/\/ndrgkokalenterprise.com\/zh\/dl-methionine-vs-l-lysine-feed-amino-acids\/","title":{"rendered":"DL-Methionine vs L-Lysine: Feed Amino Acids Explained for Poultry and Pigs"},"content":{"rendered":"
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Quick answer:<\/strong> DL-methionine and L-lysine are the two most widely used feed amino acids. Methionine is usually the first limiting amino acid for poultry, so DL-methionine is key in chicken feed. Lysine is usually the first limiting amino acid for pigs, so L-lysine is key in pig feed. Adding both lets nutritionists cut crude protein, lower feed costs and improve growth.<\/p>\n

Updated October 2026 \u00b7 NDRG Kokal Enterprise, Sarawak, Malaysia<\/em><\/p>\n<\/div>\n

Key facts<\/h2>\n\n\n\n\n\n\n\n\n
DL-Methionine purity<\/th>\n99% min<\/td>\n<\/tr>\n
L-Lysine HCl purity<\/th>\n98.5% min (78.8% lysine)<\/td>\n<\/tr>\n
First limiting for poultry<\/th>\nMethionine<\/td>\n<\/tr>\n
First limiting for pigs<\/th>\nLysine<\/td>\n<\/tr>\n
Main benefit<\/th>\nBetter growth with less crude protein<\/td>\n<\/tr>\n
Packing<\/th>\n25 kg bags<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

What are limiting amino acids?<\/h2>\n

Animals need essential amino acids in the right balance. The “first limiting” amino acid is the one in shortest supply compared with the animal’s needs; it caps growth no matter how much other protein is fed. Supplementing it unlocks better performance.<\/p>\n

DL-methionine vs L-lysine<\/h2>\n\n\n\n\n\n\n\n\n\n
Feature<\/th>\nDL-Methionine<\/th>\nL-Lysine HCl<\/th>\n<\/tr>\n<\/thead>\n
Purity<\/td>\n99% min<\/td>\n98.5% min (78.8% lysine)<\/td>\n<\/tr>\n
Main species<\/td>\nPoultry (broilers, layers), fish<\/td>\nPigs, poultry<\/td>\n<\/tr>\n
Key roles<\/td>\nGrowth, feathering, egg production, liver health<\/td>\nMuscle growth, lean meat, feed efficiency<\/td>\n<\/tr>\n
Main feed partner<\/td>\nCorn\u2013soybean meal diets<\/td>\nCereal-based pig diets<\/td>\n<\/tr>\n
Form<\/td>\nWhite powder<\/td>\nLight brown granules\/powder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Why poultry need DL-methionine<\/h2>\n

Corn and soybean meal diets are naturally low in methionine. Chickens need it for growth, feather formation and egg production, so DL-methionine is added to almost every commercial poultry feed. See our feed-grade DL-methionine<\/a>.<\/p>\n

Why pigs need L-lysine<\/h2>\n

Cereals such as corn, wheat and cassava are low in lysine. Adding L-lysine HCl<\/a> lets pig farmers reduce expensive protein meals while keeping growth and lean meat yield high.<\/p>\n

How amino acids cut feed costs<\/h2>\n