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Should you separate pigs by age or size?

April 5, 2026

Quick Answer

Separating pigs by age is generally recommended for several reasons, including minimizing competition for food and space, reducing stress, and improving overall health.

Advantages of Age-Based Separation

Separating pigs by age allows you to manage each group’s nutritional requirements and growth rates more effectively. For example, you can provide younger pigs with starter feed, while older pigs receive more mature feed. This ensures that each group receives the necessary nutrients for optimal growth and development. In a typical homestead setting, it’s common to separate pigs into three groups: weaners (0-16 weeks), growers (16-24 weeks), and finishers (24 weeks and older).

Practical Considerations for Age-Based Separation

When separating pigs by age, it’s essential to consider the space and equipment requirements for each group. For instance, younger pigs need more space and access to a creep area where they can nurse from their mothers. As pigs grow, they require more space and may need to be moved to larger enclosures or pens. A general rule of thumb is to provide at least 4 square feet of space per pig for the first 40 pounds of growth, with an additional 1 square foot per pig for each additional 10 pounds.

Health Benefits of Age-Based Separation

Separating pigs by age can also help reduce the risk of disease transmission between groups. For example, older pigs may carry diseases that can be transmitted to younger pigs, which can lead to reduced growth rates and increased mortality. By separating the groups, you can reduce the risk of disease transmission and ensure that each group receives the necessary vaccinations and health checks. Regular health checks and vaccinations can also help prevent the spread of disease within the farm.

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