Methionine Cost Surge: Bioefficacy and Economic Evaluation of Feed Additive Substitution Strategies

March 31, 2026, 5:52 PM

LYDD-Global

Guide

Highlights at a glance

As of March 2026, domestic methionine prices have surged dramatically. Within just 23 days, solid and liquid methionine prices have cumulatively increased by 138.59% and 106.90%, respectively, nearing their highest levels in nearly a decade. This price rally is driven by multiple factors:

Rising Raw Material Costs: Prices of core raw materials have collectively climbed, with natural gas, propylene, methanol, and sulfur increasing by 24.48%, 37.08%, 40.82%, and 23.57%, respectively, directly pushing up production costs.
Tightening Supply: Global supply has tightened significantly. Major producers have undergone production line maintenance, with Evonik and Sumitomo Chemical declaring force majeure at their plants, idling approximately 15% of global liquid methionine capacity. Domestic companies have further strengthened price expectations by halting sales and holding inventory.
Recovering Demand: Improved profitability in poultry farming has increased procurement demand from feed mills, and post-holiday restocking has further amplified demand.

However, the current downturn and widespread losses in the downstream livestock and poultry sectors have dampened feed mills' purchasing enthusiasm. This weak demand is expected to curb the continuous rise in methionine prices to some extent.

Faced with sustained methionine price increases, betaine, hydroxy methionine and its calcium salt, microencapsulated methionine, and choline are currently mainstream and effective alternatives in the feed industry. They can significantly reduce formula costs while ensuring animal production performance.

1. Betaine (Compound Betaine / Trimethylglycine)

As a highly efficient methyl donor, betaine participates in methylation reactions, promoting the conversion of homocysteine to methionine, thereby reducing dependence on exogenous methionine. Studies show that adding 0.05%-0.075% betaine to broiler diets can replace about 20%-25% of methionine, while also improving fat metabolism, increasing lean meat percentage, and enhancing stress resistance. Its advantages include good stability and heat resistance during pelleting, making it suitable for large-scale feed production in northern regions.

Chemical Form: n,n,n-trimethylglycine, a quaternary ammonium compound.
Bioefficacy: Approximately 70%-80% of methionine. It indirectly participates in methionine synthesis as a methyl donor but cannot be directly used for protein construction.
Recommended Dosage: 3–5 g/ton for poultry feed, 5–10 g/ton for swine feed; adding 0.5–0.7 kg per ton of feed can replace about 20%-25% of methionine.
Suitable Animals: Poultry (especially broilers), swine, aquatic animals; widely used in ruminant and specialty farming.
Cost Trend: Prices are stable and significantly lower than methionine, offering a distinct cost advantage and making it one of the most cost-effective alternatives currently available.

2. Hydroxy Methionine and its Calcium Salt (MHA/MHA-Ca)

This is a classic alternative developed by Monsanto, particularly suitable for ruminants like dairy cows. Its stable molecular structure resists microbial degradation in the rumen, allowing it to pass to the small intestine where it is converted to L-methionine for absorption. Hydroxy methionine calcium is a solid powder, easy to use, with an efficacy of about 80% of methionine. Its production process is more environmentally friendly and lower in cost, making it suitable for long-term, stable addition in medium and large feed mills.

Chemical Form: Hydroxy methionine ( C5H10O3SC5H10O3S ) or its calcium salt ( C10H18O6S2CaC10H18O6S2Ca ), a chemically synthesized product.
Bioefficacy: Liquid MHA is about 88% of methionine, and the calcium salt form is about 84%. It must be converted to L-methionine in the body for utilization.
Recommended Dosage: Calculated based on active ingredient, 1.1–1.2 kg of MHA ≈ 1 kg of DL-Methionine, commonly used for precise replacement in complete feeds.
Suitable Animals: Ruminants (e.g., dairy cows, beef cattle), poultry, aquatic animals, and specialty farming, especially where rumen protection is needed.
Cost Trend: Shorter production process and lower energy consumption result in a lower cost than DL-Methionine. Its long-term economic benefits continue to improve with the adoption of liquid feeding systems.

3. Microencapsulated Methionine (Coated Methionine)

Special coating technology delays its release, ensuring methionine is precisely absorbed in the small intestine and avoiding destruction by stomach acid. Practice shows that using 80%-90% of the microencapsulated product dosage can achieve or even surpass the effects of full-dose crystalline methionine. This not only saves costs but also improves feed conversion rate and gut health. Although the unit price is higher, its comprehensive benefits are optimal, making it particularly suitable for high-yield broiler and breeder poultry scenarios.

Chemical Form: DL-Methionine coated with a polymer or fat layer for targeted intestinal release.
Bioefficacy: Absorption rate increases to over 90%, with bioavailability higher than ordinary crystalline methionine, especially with greater stability after high-temperature pelleting.
Recommended Dosage: Using 80%-90% of the standard recommended amount can achieve equivalent or superior performance, suitable for high-yield livestock and poultry.
Suitable Animals: Breeding poultry, broilers, piglets, and other animals with high nutritional precision requirements, especially in high-density farming environments.
Cost Trend: Higher cost per ton, but due to reduced dosage and improved feed conversion rate, the comprehensive cost shows a downward trend, offering the best economic return.

4. Choline

Widely used in feed as Choline Chloride, it is an important methyl donor precursor. It does not directly provide a sulfur-containing amino acid structure and therefore cannot completely replace methionine's function in protein synthesis. However, it can indirectly save methionine consumption through metabolic pathways:

Chemical Form: Mainly Choline Chloride (usually 60% or 75% premix), which is converted to betaine in the body to participate in the methyl cycle.
Bioefficacy: As a methyl donor, its effectiveness is about 60%-70% of methionine. It must indirectly generate methionine via the betaine pathway, and conversion efficiency is affected by diet composition and animal species.
Recommended Dosage: Generally added at 1000–1500 mg/kg in poultry feed and 800–1200 mg/kg in swine feed; within this range, it can achieve about 20%-25% replacement of methionine, with better results in corn-soybean meal diets.
Suitable Animals: Poultry (broilers, laying hens) > Swine > Aquatic animals; ruminants require rumen-protected choline for effective utilization.
Synergistic Nutrients: Must work together with methionine, Vitamin B12, folic acid, etc., to maintain an efficient methyl cycle; a deficiency in any component will limit choline's replacement effect.
Mechanism of Action: Choline → Oxidized to Betaine → Provides methyl group to convert homocysteine to methionine → Reduces exogenous methionine demand, while promoting fat metabolism and preventing fatty liver.

It is worth noting that choline's replacement capacity is limited by the animal's physiological stage and basal diet structure. Young animals have weak self-synthesis capabilities and require adequate basal choline supply. In low-protein or reduced-soybean meal diets, simply increasing choline cannot make up for the methionine deficit and must be combined with other amino acid balancing strategies.

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