**Feed Yellow Pigment Product Specification**  

**Generic Name**: Feed Additive yellow pigment

**INCI/Chemical Name**: yellow pigment

**Key Composition**:  

- Total Lutein: ≤50 g/kg  

- *Trans*-Lutein: ≥80% of total lutein  

**Appearance**: Free-flowing golden-yellow to orange-red powder with distinct marigold scent.  

**Solubility**: Dispersible in water, vegetable oils, and organic solvents.  

**Packaging**: 20 kg/bag (kraft paper outer + aluminum foil inner), or 1 kg/25 kg custom options.  

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### **I. Applications**  

1. **Poultry Pigmentation**  

   - **Egg Yolk**: Enhances yolk color (Roche Yolk Color Fan: 10–14) for commercial eggs.  

   - **Skin/Fat**: Improves yellowness in broiler skin, shanks, and subcutaneous fat (e.g., Yellow-feathered chickens).  

2. **Aquaculture**: Enhances skin/pigmentation in trout, shrimp, and ornamental fish.  

3. **Specialty Birds**: Supports feather/skin coloration in birds (e.g., canaries, pheasants).  

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### **II. Dosage & Administration**  

**Guidelines**: Adjust based on target color intensity, basal diet lutein content, and seasonal factors.  

| **Target Application**      | **Dosage (per ton of complete feed)** | **Notes**                              |  

|-----------------------------|---------------------------------------|----------------------------------------|  

| Egg Yolk Coloring (Layers)  | 0.3–1.0 kg                           

 | Concentrate: 1.2–3.0 kg/ton            |  

| Broiler Skin Pigmentation   | 0.5–2.0 kg                          

  | Concentrate: 2.0–10.0 kg/ton           |  

| Aquatic Species             | 3.0–8.0 kg                           

 | Synergistic with red pigments (e.g., astaxanthin) |  

| **Layer Maintenance Dose**  | 50–80 mg/kg (0.05–0.08 kg/ton)       

 | Summer: ↑30% dosage required           |  

**Administration Protocol**:  

1. **Premix**: Blend with minor carrier (e.g., corn flour) before full-scale feed mixing.  

2. **Duration**: ≥28 days continuous feeding for optimal efficacy.  

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### **IV. Storage & Shelf Life**  

- **Conditions**: Dark, airtight containers. Isolate from oxidizers/strong acids.  

- **Shelf Life**: 12 months (unopened, under specified storage).