Amino acids and nitrogen nutrients

L-Lysine Sulfate

Name: L-Lysine Sulfate
Brand: Atlas Feed Additives
Availability: InStock

L-Lysine Sulfate is a feed-grade lysine source used in precision nutrition programs to support balanced amino acid profiles, economical ration design, lower-crude-protein diets, efficient nitrogen utilization, and consistent formulation value in poultry, swine, aquaculture, pet food, and specialty feed applications.

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Product role

Where L-Lysine Sulfate fits

L-Lysine Sulfate is part of the amino acids and nitrogen nutrients group. Lysine is often one of the first limiting amino acids in cereal- and soybean-meal-based diets, so lysine supplementation is a central tool in modern poultry, swine, aquaculture, pet, and specialty feed formulation. L-Lysine Sulfate allows nutritionists to supply lysine more precisely without relying only on intact protein sources.

In practical feed formulation, L-Lysine Sulfate is compared by its lysine activity, digestible amino acid contribution, moisture, sulfate content, physical quality, batch consistency, origin, documentation, and delivered cost. It is often evaluated alongside L-Lysine HCl, DL-Methionine, methionine hydroxy analog, L-Threonine, L-Tryptophan, L-Valine, and other amino acids used in low-crude-protein and least-cost formulation programs.

Atlas Feed Additives can coordinate international supplier options for feed mills, premix producers, distributors, livestock integrators, aquaculture feed producers, and importers that need consistent feed-grade material, export-ready packaging, technical documents, and reliable quotation support.

Typical applications

L-Lysine Sulfate may be included in complete feeds, premixes, concentrates, mineral-vitamin blends, specialty nutrition programs, and integrated feed systems where additional lysine is required to meet total or digestible amino acid targets.

Poultry and swine diets with lower crude protein targets
Broiler, turkey, layer, breeder, and pullet programs requiring precise lysine balance
Nursery pig, grower-finisher, and sow diets where lysine is a major formulation driver
Aquaculture feeds using plant proteins, alternative proteins, or reduced fishmeal formulas
Pet food and specialty diets where amino acid balance supports nutritional positioning
Premix and concentrate production for feed mills and integrators
Least-cost formulation programs where lysine value is compared across raw material options
Low-crude-protein diet programs focused on nitrogen efficiency and feed cost control

Buyer quality checklist

L-Lysine Sulfate offers should be compared on an aligned basis. Product name alone is not enough because suppliers may differ in lysine activity, assay basis, physical characteristics, document package, shelf life, packaging, origin, and supply consistency.

Lysine activity and assay declaration
Analytical basis used for lysine value
Moisture, sulfate level, and related quality indicators
Particle size distribution and bulk density
Flowability, caking risk, and dust-control properties
Heavy metals and undesirable substance limits
Microbiological status and contamination controls
Country of origin and batch traceability
Manufacturing date, expiry date, and shelf-life statement
COA, SDS, specification, origin, and required market certificates

Specification guidance

How to define the right L-Lysine Sulfate specification

A clear purchase specification helps buyers avoid mismatched quotations and unexpected formulation differences. For lysine products, the most important comparison points are lysine activity, assay basis, moisture, purity profile, physical form, particle size, packaging, origin, shelf life, and document readiness. Nutrition teams should also confirm that supplier values match the amino acid matrix used in formulation software.

Core specification points

Lysine activity: confirm the declared lysine level and whether the value is stated on an as-is or dry-matter basis.
Assay basis: verify the analytical method, tolerance, and reporting basis used in the Certificate of Analysis.
Moisture: review moisture level because it can affect flowability, storage, and assay-corrected value.
Sulfate content: confirm expected sulfate contribution and how it is represented in the product specification.
Physical form: check whether the product is powder, granule, or another premix-ready form.
Particle size: important for premix uniformity, segregation control, and dosing accuracy.
Bulk density: relevant for bag, silo, dosing, and blending calculations.
Flowability: check anti-caking behavior and suitability for automated dosing systems.
Contaminant limits: confirm heavy metals, microbiological limits, and undesirable substances.
Packaging: verify bag size, liner, pallet configuration, humidity protection, and export suitability.
Regulatory status: check permitted use, registration, and label rules in the destination country.

Species and formulation use

Application considerations by animal segment

Poultry

In broiler, turkey, layer, breeder, and pullet diets, L-Lysine Sulfate may be used when formulation targets require precise lysine supply and efficient protein utilization. Lysine is a major reference amino acid in poultry diet design, and its level can influence how other amino acids are balanced in relation to performance targets and feed cost.

Swine

In piglet, grower-finisher, and sow nutrition, lysine is a central amino acid for formulation. L-Lysine Sulfate can support low-protein diets, least-cost formulation, and digestible lysine targets when it is valued correctly in relation to L-Lysine HCl and other protein sources.

Aquaculture

In fish and shrimp feeds, L-Lysine Sulfate may be used to support amino acid balance when formulas include plant proteins, alternative proteins, or reduced fishmeal levels. Stability during extrusion, drying, coating, and storage should be reviewed according to supplier guidance and feed process conditions.

Companion animals

In pet food, treats, and specialty diets, L-Lysine Sulfate may be evaluated when protein-source optimization or amino acid balance requires additional lysine. Palatability, label wording, process compatibility, ash contribution, and regulatory compliance should be checked.

Ruminants

In ruminant programs, lysine use depends heavily on species, production stage, rumen protection, formulation goal, and local practice. Buyers should confirm whether the offered ingredient is suitable for the intended ruminant application and whether any rumen-protection technology is required.

Premix plants

Premix producers evaluate L-Lysine Sulfate by blend uniformity, particle size, anti-caking behavior, compatibility with other micro-ingredients, packaging strength, lot traceability, and whether the material works reliably in manual or automated dosing systems.

Procurement note

Compare lysine value, not only price per ton.

Price comparisons are meaningful only when lysine activity, assay basis, moisture, origin, particle size, packaging, shelf life, payment terms, lead time, and documentation are aligned. For lysine products, buyers should compare the delivered cost per unit of usable lysine, not simply the invoice price per metric ton.

A lower price may not be the best option if the material has weaker traceability, lower lysine activity, limited document support, shorter shelf life, unsuitable packaging, inconsistent particle size, higher caking risk, or uncertain market compliance. Buyers should compare the delivered value of the product, not only the unit price.

Quality and safety

Documentation buyers should request

A complete document package helps buyers confirm product identity, feed-grade suitability, shipment readiness, and compliance with destination-market expectations. Document requirements vary by country, importer, feed mill, certification program, and customer quality system.

Product specification sheet with lysine activity and physical characteristics
Certificate of Analysis for the offered batch
Safety Data Sheet with handling and storage guidance
Country of origin and manufacturer or supplier declaration where available
Batch number, manufacturing date, expiry date, and shelf-life statement
Heavy metal and undesirable substance information where required
Microbiological quality statement where relevant
GMO, allergen, animal-origin, vegan, irradiation, or residual solvent statements if requested
Halal, ISO, GMP+, FAMI-QS, HACCP, or other certificates if required by the buyer
Import, registration, or feed-additive compliance documents for the destination country

Storage and handling

Protect quality from warehouse to mixer

Feed-grade lysine products are usually handled as dry powder or granulated materials. Storage and handling should protect the product from moisture, contamination, caking, bag damage, and loss of traceability. Good warehouse practice supports consistent dosing, reliable premix uniformity, and clean production records.

Store in a cool, dry, clean, and well-ventilated warehouse.
Keep bags sealed until use and protect them from humidity and condensation.
Avoid direct contact with floors, walls, water sources, and incompatible materials.
Use pallet covers or stretch wrap when needed for dust and moisture protection.
Apply first-expired, first-out stock rotation.
Keep batch labels visible for traceability and recall management.
Prevent cross-contamination with medicated additives, allergens, or restricted materials.
Check flowability before using in automated micro-dosing systems.

Formulation guidance

How nutrition teams evaluate inclusion

L-Lysine Sulfate inclusion should be determined by qualified nutritionists using species-specific amino acid requirements, digestible amino acid values, ingredient matrix data, feed intake, production stage, performance targets, and economic optimization. Since lysine is often used as a reference amino acid, its correct valuation influences the balance of methionine, threonine, tryptophan, valine, isoleucine, arginine, and other amino acids.

Practical formulation questions

Which species, age, weight range, and production stage is the diet designed for?
Is the formulation based on total amino acids or standardized ileal digestible amino acids?
What digestible lysine level is being targeted?
Is L-Lysine Sulfate being compared with L-Lysine HCl on an equal digestible lysine basis?
Is crude protein being reduced to improve nitrogen efficiency or reduce diet cost?
Are ingredient changes creating a lysine limitation?
Will L-Lysine Sulfate be added directly to complete feed or through a premix?
Does the product need to pass through pelleting, extrusion, or high-temperature processing?
Are the labeling, permitted claims, and inclusion rules acceptable in the destination market?

Commercial support

How Atlas Feed Additives supports sourcing

Supplier matching

Atlas reviews supplier options according to lysine activity, product grade, origin, documentation, packaging, export readiness, lead time, quantity, and buyer-specific technical requirements.

Specification alignment

Before comparing prices, Atlas helps clarify lysine basis, activity level, particle size, packaging, certification needs, origin expectations, document package, and destination-market requirements.

Export coordination

Atlas can support quotation preparation with shipment terms, packing information, supplier communication, document review, and coordination between buyer, exporter, and logistics partners.

Repeat supply planning

For recurring demand, buyers can share forecasts so sourcing can be reviewed around production schedule, market availability, shelf-life management, shipping frequency, and safety stock planning.

Packaging options

Choose packaging according to plant requirements

Packaging selection affects freight cost, handling efficiency, warehouse protection, dosing accuracy, and product traceability. Buyers should match packaging to unloading capacity, storage conditions, monthly usage, blending system, and import handling requirements.

Small bags: practical for premix plants, manual dosing, and smaller orders.
Multi-layer bags with liner: useful for moisture protection and export handling.
Cartons: may be used when additional protection or customer-specific packing is required.
Big bags: suitable for high-volume users with appropriate unloading and dosing systems.
Palletized export packing: supports safer handling, counting, and documentation-controlled shipments.

Logistics planning

Plan freight around shelf life and traceability

L-Lysine Sulfate logistics should protect the product from moisture, contamination, bag damage, and excessive storage delays. Buyers should confirm packing details, pallet dimensions, container loading, document timing, and shelf-life balance before shipment.

Confirm shipment quantity, bag count, pallet count, and net/gross weight.
Request batch numbers and shelf-life information before dispatch.
Check container dryness and cleanliness for sea shipments.
Protect goods from rain during loading and unloading.
Confirm whether fumigation, heat treatment, or pallet certificates are needed.
Review import documentation before the shipment leaves origin.

Feed mill implementation

From purchase order to production floor

After procurement, the product should be received, sampled, recorded, and stored according to the buyer’s quality system. L-Lysine Sulfate should be handled as a precision nutritional ingredient. Proper weighing, sequencing, mixer loading, and premix preparation help reduce dosage errors and support uniform distribution in finished feed.

Check supplier documents against purchase order requirements before unloading.
Confirm bag condition, labels, batch number, net weight, and expiry date.
Take retain samples where required by the quality plan.
Use calibrated scales for micro-ingredient or macro-ingredient weighing.
Confirm the premix carrier and mixing sequence before production.
Document the lot number used in each production batch.
Clean transfer points and dosing equipment to prevent cross-contamination.

Nutrition strategy

Why lysine value matters in precision protein programs

In precision nutrition, the objective is not simply to add more protein, but to supply the correct balance of digestible amino acids. L-Lysine Sulfate helps nutrition teams adjust formulas when common raw materials do not supply enough lysine relative to methionine, threonine, tryptophan, valine, isoleucine, and other amino acids. This can be useful when reformulating with alternative protein meals, reducing soybean meal, managing crude protein levels, or optimizing diet cost.

Supports amino acid balance in low-crude-protein diets
Helps reduce reliance on excess intact protein when lysine is limiting
Supports flexible raw material use in changing commodity markets
Allows closer alignment with digestible amino acid requirements
Can be used in formulation models focused on nitrogen efficiency and feed cost

Supplier comparison

How buyers can compare offers fairly

The lowest unit price is not always the best delivered value. Buyers should compare L-Lysine Sulfate offers using the same lysine basis, delivery terms, documentation level, packaging, shelf life, and reliability assumptions.

Compare cost per unit of usable lysine, not product name alone.
Check whether freight, insurance, duties, and local costs are included.
Confirm minimum remaining shelf life at shipment and arrival.
Review supplier history, document consistency, and batch traceability.
Ask whether the product is available for spot shipment or contract supply.
Confirm packaging strength and moisture protection for long-distance export.

Lysine source comparison

L-Lysine Sulfate versus L-Lysine HCl

L-Lysine Sulfate and L-Lysine HCl are both used as lysine sources, but they should not be compared only by price per ton. They differ in lysine activity, accompanying components, moisture, ash contribution, physical form, documentation, and how the product is valued in formulation software.

Compare digestible lysine contribution on the same basis.
Adjust least-cost formulation values according to actual lysine activity.
Review moisture, ash, sulfate, and nutrient matrix contributions.
Check physical quality and dosing behavior in the feed mill.
Confirm how each product is registered or labeled in the destination market.

Buying calculation

Useful information for cost comparison

To compare lysine products accurately, buyers should request a complete specification and use the product’s actual nutrient contribution in the formulation model. A supplier quote should be reviewed together with freight terms, import costs, payment terms, document readiness, and delivery schedule.

Quoted price and currency
Lysine activity and assay basis
Moisture and other specification values
Packaging weight and net shipment quantity
Incoterms and included logistics costs
Applicable duties, taxes, port charges, and inland freight
Expected lead time and remaining shelf life

Questions

Useful answers

What is L-Lysine Sulfate used for in animal nutrition?

L-Lysine Sulfate supports precise protein nutrition, balanced amino acid profiles, lower-crude-protein formulation, nitrogen efficiency, and economical ration design. It should be used according to target species, formulation objective, digestible amino acid targets, ingredient matrix, and applicable market rules.

Why is lysine important in feed formulation?

Lysine is often one of the first limiting amino acids in poultry and swine diets. It is commonly used as a reference amino acid for balancing other amino acids. Correct lysine supplementation helps nutritionists meet requirements without adding unnecessary crude protein.

How is L-Lysine Sulfate different from L-Lysine HCl?

Both are lysine sources, but they differ in lysine activity, accompanying components, moisture, physical form, ash or sulfate contribution, and how they are valued in formulation software. Buyers should compare them on cost per unit of usable lysine and not only on product price per ton.

Is L-Lysine Sulfate mainly used in poultry and swine?

Poultry and swine are common application areas, especially in precision amino acid programs. L-Lysine Sulfate may also be considered in aquaculture, pet food, and specialty nutrition where the formulation requires it. Suitability should always be checked by species, diet type, processing method, and market rules.

Can Atlas Feed Additives quote L-Lysine Sulfate?

Yes. Send your required specification, quantity, destination, packaging preference, documents, delivery terms, and target application so Atlas Feed Additives can review suitable supplier options for L-Lysine Sulfate.

What quality documents should buyers request for L-Lysine Sulfate?

Common documents include product specification, Certificate of Analysis, Safety Data Sheet, origin information, batch details, manufacturing date, expiry date, packing list, and any market-specific certificates required by the buyer or importer.

What specification should I compare between suppliers?

Compare lysine activity, assay basis, moisture, sulfate level, particle size, bulk density, flowability, heavy metals, microbiological status, country of origin, packaging, shelf life, traceability, and certification package.

Can L-Lysine Sulfate be used in premixes?

Yes, L-Lysine Sulfate can be handled through premix systems where the product specification and physical properties are suitable. Buyers should review particle size, flowability, blend uniformity, compatibility with other ingredients, and storage conditions to reduce segregation or caking risks.

Is L-Lysine Sulfate stable during pelleting?

Lysine products are commonly used in feed manufacturing, but actual stability should be checked according to the supplier specification, processing temperature, conditioning time, moisture, and feed matrix. Buyers should request supplier guidance when using high-temperature processing.

How should L-Lysine Sulfate be stored?

Store L-Lysine Sulfate in a cool, dry, clean, and well-ventilated area. Keep bags sealed, protect from humidity, avoid contamination, maintain batch labels, and use first-expired, first-out stock rotation.

What information is needed for a fast quotation?

Please provide product name, required lysine activity or grade, order quantity, destination country, packaging preference, target species, application method, required certificates, delivery terms, and preferred shipment date.

Does Atlas provide regulatory approval?

Atlas Feed Additives can help coordinate supplier documents and quotation information, but buyers and importers should confirm local registration, permitted use, labeling rules, and feed-additive compliance in the destination market.

Can L-Lysine Sulfate be combined with other amino acids?

Yes. It is often used alongside amino acids such as methionine, threonine, tryptophan, valine, isoleucine, arginine, and others according to the formulation target. A qualified nutritionist should determine the final amino acid balance.

Why does origin matter when sourcing L-Lysine Sulfate?

Origin can affect documentation, import procedures, customer approval, lead time, price, and regulatory acceptance. Buyers should confirm country of origin, manufacturer approval, batch traceability, and destination-market requirements before confirming an order.

How should I compare L-Lysine Sulfate prices?

Compare offers using the same lysine activity, assay basis, packaging, origin, Incoterms, lead time, payment terms, document package, shelf life, and freight basis. A low unit price may not be the best value if lysine activity, documentation, supply reliability, or shelf-life conditions are weaker.

Can L-Lysine Sulfate help reduce crude protein in feed?

It can be part of a low-crude-protein formulation strategy when used with other amino acids and proper ingredient matrix values. Final diet design should be managed by a qualified nutritionist using species-specific requirements and local regulations.

What does cost per unit of usable lysine mean?

Cost per unit of usable lysine compares products according to the lysine they actually contribute to the diet. This is more accurate than comparing price per ton when products have different lysine activity, moisture, or nutrient matrix values.

Request a quotation

Tell us what you need

Send your product list, target specification, destination country, packaging preference, and required documents. For L-Lysine Sulfate, please also include the required lysine activity or assay basis, order quantity, target animal species, use in premix or complete feed, preferred packaging, required certificates, destination port or delivery city, and preferred Incoterms. Our team will review your request and respond from orders@feedgradeadditives.com.

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