L-Lysine Sulphate 70% (Feed Grade) — Amino Acid Additive for Animal Nutrition

Cost-effective feed-grade amino acid source: L-Lysine Sulphate 70% (≥55% available lysine). Widely applied in poultry, swine, and aquaculture nutrition to optimize growth and feed efficiency. Samples available, bulk packaging customizable.

1. Product Names & Synonyms

• Official name: L-Lysine Sulphate 70% (Feed Grade)
• Synonyms: L-lysine sulphate, lysine sulphate (feed grade), 70% lysine sulphate, lysine sulphate granules
• CAS No.: 60343-69-3
• Molecular Formula: C₆H₁₆N₂O₆S
• Common abbreviation: L-Lysine Sulphate 70%

2. Technical Specifications & Properties

Guaranteed Analysis

• L-lysine sulphate (as salt): ~70%
• Available L-lysine (free base): ≥55%
• Other amino acids: ≥10% (fermentation by-products)
• Moisture: ≤3.0%
• Ash: ≤4.0%
• pH (1% solution): 3.0–6.5 (typical ≈3.5)
• Sulphate content: ≤15%
• Heavy metals: ≤0.003%
• Shelf life: 24 months (unopened, dry conditions at ambient temperature)

Physical Properties

• Appearance: light brown to yellowish free-flowing powder or granules
• Solubility: easily soluble in water, insoluble in oil
• Bulk density: 600–650 kg/m³ (≈0.60–0.65 g/cm³)
• Particle size: ≥90% pass 1.55–1.7 mm sieve

Chemical Properties

• Molecular weight: ~244.26 g/mol
• Stability: stable under dry, cool, and light-protected conditions
• Reactivity: Avoid prolonged high-temperature processing to reduce Maillard reactions

4. Application & Usage

Calculation Formula
Required lysine (g/kg) ÷ Available lysine fraction (0.55) = Dosage of L-Lysine Sulphate (g/kg feed).

Dosage Examples

• To supply 1.0 g/kg lysine → add 1.82 g/kg (1.82 kg/ton) L-Lysine Sulphate
• To supply 1.5 g/kg lysine → add 2.73 g/kg (2.73 kg/ton)
• To supply 2.0 g/kg lysine → add 3.64 g/kg (3.64 kg/ton)

Species Applications

• Swine (30–60 kg grower pigs): Target SID lysine ≈0.94% (9.4 g/kg). If basal feed provides 7.5 g/kg, supplement 1.9 g/kg → add 3.45 kg/ton.
• Broilers: Target ≈1.0% lysine. If basal feed has 8.5 g/kg, supplement 1.6 g/kg → add 2.91 kg/ton.
• Layers / Aquaculture: Dosage depends on growth stage; calculate with a formula based on NRC or company nutrition standards.
• Ruminants: Not effective unless rumen-protected, since unprotected lysine is degraded in the rumen.

Best Practices

• Pre-mix in small batches before blending into the final feed.
• Monitor heat treatment (pelleting) to avoid lysine loss.
• Use appropriate PPE (mask, goggles) to prevent dust exposure.

5. Packaging & Storage

• Packaging: 25 kg carton drums, kraft bags with PE liner, or jumbo bags (500–1000 kg).
• Storage: keep sealed, dry, at ambient temperature, away from heat, moisture, and direct sunlight.
• Shelf life: 24 months unopened under recommended storage.
• Safety: dust may cause irritation; handle with ventilation and protective equipment.

6. Comparison with L-Lysine HCl

• Purity vs dosage: L-Lysine HCl contains 98.5% salt (~78% lysine), requires a lower inclusion rate but is more expensive.
• Economics: L-Lysine Sulphate provides similar nutritional value at a lower cost per unit of usable lysine.
• Practicality: Both are highly bioavailable; choice depends on feed mill economics and formulation precision.

7. Quality Control (Buyer Checklist)

• Test items: lysine content, moisture, ash, particle size, heavy metals, microbiology.
• Methods: HPLC for amino acid content, ICP-MS for heavy metals, and standard ISO/GB for microbes.
• Documents: COA, SDS, heavy metal & microbiological reports provided with shipment.

9. Specification Table