A pig feed pellet production line includes grinding, batching, mixing, pelleting, cooling and packaging processes. Due to differences in formulations and pellet specifications for pig feed at various growth stages, feed pellet production equipment shall be configured according to raw materials, production capacity and product requirements. This article introduces pig feed formulations, feed pellet production processes, capacity selection and equipment solutions.
Common Pig Feed Products and Basic Formulation Principles
Pig feed formulation shall first determine nutritional requirements based on the pig’s growth stage, body weight, health status and breeding objectives, then optimize the formulation considering raw material prices, supply stability and processing characteristics. Equipment selection for feed pelleting cannot be separated from formulation, because fat, fiber, minerals and micro-additives in the formulation will affect grinding, mixing, pelleting and line cleaning requirements.
| Product Type | Formulation & Processing Focus | Reference Pellet Diameter |
| Creep Feed | Palatability, digestibility, fine grinding and accurate micro-ingredient metering | 2.0–2.5 mm |
| Nursery Feed | Protein and amino acid balance, mixing uniformity and cross-contamination control | 2.5–3.0 mm |
| Grower Feed | Nutrient density, weight gain cost and continuous pelleting capacity | 3.0–3.5 mm |
| Finisher Feed | Stable production capacity, feed intake efficiency, packaging and warehousing efficiency | 3.5–4.0 mm |
| Sow Feed | Fiber, minerals, staged energy and adaptability to high-fiber raw materials | 3.0–4.0 mm |
Pig Feed Pellet Size Standard for Different Pig Growth Stages
The above are references for typical feed pellet processing plant projects. Final specifications shall be determined by pig growth stages, feeding methods, customer standards and sieve analysis tests. For formulations containing medicinal or functional additives, batch sequencing, line cleaning and residue detection protocols shall be developed in accordance with regulations of the target market and customer acceptance criteria. Contact ABC Machinery for a customized pig feed pellet production line solution for your project. Engineers provide free 24/7 online technical consultation.
Pig Feed Pellet Production Process
The basic flow of a pig feed pellet production line: Raw material receiving → impurity cleaning → grinding → batching & metering → mixing → conditioning → pelleting → cooling → screening → finished product packaging or bulk delivery.
Grinding, Batching and Mixing
Hammer mills are commonly adopted in grinding systems. Coarse grinding, fine grinding or dual grinding routes can be configured according to raw material structure and product requirements.
- Particle size affects both pellet quality and feed utilization Reasonable particle size distribution facilitates mixing and pellet formation.
For staple grains such as corn, the initial reference average particle size after grinding can be set at approximately 700–800 μm for trial operation. Final parameters shall comply with formulation and pig stage requirements.
- Batching accuracy determines formulation consistency.
The batching system weighs major ingredients, auxiliary materials, minerals and micro-additives.For feed pellet production lines, a coefficient of variation not exceeding 5% can be taken as the reference control target for mixing uniformity. Weighing accuracy for major ingredients is referenced at ±0.2%, and ±0.05% for micro-additives. Actual tolerances shall be determined by the weighing system and customer quality standards.
- Mixing uniformity shall match batch loading volume Mixers should operate within the effective loading range.
Insufficient loading reduces mixing quality, while overloading may prolong mixing time and cause uneven discharge. Before formal production, batch trials shall be conducted to verify sampling points and mixing uniformity.
ABC Machinery can precisely match dedicated grinding processes together with hammer and sieve configurations according to customers’ main feed categories, strictly meeting fineness standards for pig feed at different stages, and deliver customized grinding unit solutions.
Conditioning, Pelleting and Post-Processing
- Conditioning improves the pressing performance of powder feed via steam and moisture.
- Actual output of pellet mills is jointly affected by formulation composition, raw material moisture, die aperture, roller condition, steam supply and operator proficiency. Reference finished pellet indicators: pellet hardness 2.0–4.5 kg, fine content ≤8%.
- Freshly extruded pellets may reach 75–90°C with moisture of 14%–17%, so direct packaging is not allowed. Counter-flow coolers can lower finished product temperature to no more than ambient temperature +5°C and control finished moisture at ≤12.5%. Cooling performance directly relates to storage stability, mold risk, packaging condition and transportation quality.
ABC Machinery can coordinate conditioners, pellet mills, coolers, equipment clearances and control parameters for high-fiber, high-fat and conventional pig feed formulations. Final parameters shall be confirmed through raw material tests or on-site commissioning.
Feed Pellet Production Line Equipment On-Site Installation
How to Select Capacity for Pig Feed Production Lines
Annual effective output can be estimated with the following formula:
Design hourly capacity × effective operating hours per day × annual operating days × overall operating rate
Capacity selection shall start with main product types, target hourly capacity, daily production hours, formulation switching frequency, packaging modes and capacity expansion plans. The same pellet mill cannot maintain constant output for different formulations; fiber, fat, moisture, die aperture and steam supply may change actual production capacity.
| Process Unit | Main Equipment | Selection Basis |
| Receiving & Cleaning | Feeding hopper, conveyor, cleaning sieve, magnetic separator | Raw material form and impurity types |
| Grinding & Dust Removal | Hammer mill, pulse dust collector | Hardness, moisture, particle size and capacity |
| Batching & Mixing | Major ingredient scale, micro-ingredient scale, mixer | Formulation quantity, batch size and accuracy requirements |
| Post-Pelleting Processing | Conditioner, pellet mill, cooler, grading sieve | Pellet diameter, moisture and fine content |
| Finished Product Delivery | Recirculation system, packaging machine or bulk system | Packaging specification and transportation mode |
After confirming production capacity, formulation quantity and finished product specifications, further verification can be made on pellet mill quantity, die configuration, cooling capacity, packaging speed, warehouse capacity and utility requirements.
Engineering Team Photo of Overseas Feed Plant Project
Full-process Technical Service and Project Support System of ABC Machinery
ABC Machinery can carry out preliminary process assessment, equipment selection and supply scope sorting based on customers’ main pig feed types, formulations, target capacity, pellet diameter, raw material characteristics and workshop conditions. The solution shall mainly cover:
| Service Stage | Core Services |
|---|---|
| Pre-sales Service | Free customized process plan, equipment selection and budget estimation per formula, capacity and site conditions. 24h consultation. |
| In-sales Service | Workshop layout, utility drawings, installation, commissioning, calibration and joint test run. |
| After-sales Service | Warranty & maintenance, training, remote support, OEM spare parts, upgrading and ongoing technical support. |
Capacity or investment figures without raw material testing, material balance and on-site verification shall not be regarded as binding commitments.To obtain a pig feed pellet production line proposal, please submit the following information: main pig feed categories, target hourly capacity, pellet diameter, primary raw materials, packaging method, workshop location as well as local power and steam conditions. The engineering team will complete preliminary assessment and then confirm equipment configuration and quotation range.
