วันเสาร์ที่ 18 กุมภาพันธ์ พ.ศ. 2555
5.9 Fish Farming
- fish is an attractive product for farmers because:
1. they have low fat and high protein
2. they are efficient at turning their nutrient into fish mass
Pros:
- fish faming allows us to control the quality of water = clean
- we can control predator's
- we can reduce pests
- we can also reduce diseases
- By controlling all these factors, we contribute to an increase in yield of fish.
- However, where you have a high density of fish, there is a possibility of transmission of disease.
- Because of this, some fish farmers have taken to using antibiotics and is a concern to human health
- The abundance of fish within the fish farm also makes pests common and therefore, some fish farmers use pesticides - this is also a cause of concert amongst humans.
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