For increasing production, what is common in poultry, fisheries and bee-keeping?

Explanation

To answer the question "For increasing production, what is common in poultry, fisheries, and bee-keeping?", we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding the Practices**:
- **Poultry**: This involves the farming of birds, primarily chickens, for meat and eggs.
- **Fisheries**: This refers to the breeding and harvesting of fish for consumption.
- **Bee-keeping**: This is the practice of maintaining bee colonies for honey production and pollination.
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