Soalan Akuakultur

As an aquaculturist, what do you understand by the definition of Aquaculture?

Answer explanation

Aquaculture is the farming of aquatic organisms, including fish, mollusks, and aquatic plants, in controlled environments. It involves breeding, rearing, and harvesting these species for food and other products.

Aquaculture industry is known to be potential for the economic development of Malaysia. What are those potentials? Explain three (3) of them.

Answer explanation

The aquaculture industry in Malaysia has potential for economic development through job creation, increased food security, and export opportunities. These factors can enhance local economies and promote sustainable practices.

List three (3) out of five types of soil class and give one (1) example of the characteristic for each of the soil types.

Answer explanation

Three types of soil are: 1) Sandy soil - drains quickly; 2) Clay soil - retains moisture; 3) Loamy soil - balanced texture, ideal for gardening. Each type has distinct characteristics affecting plant growth.

Mr. Farid wants to build an aquaculture pond and make business on it. Unfortunately, he does not know how to start. He has assigned you as an executive officer to give some ideas. As you know, site selection is the first criterion that should be considered to build an aquaculture system which depends on several factors. List two (2) factors that influent the site selection criteria and elaborate them.

Answer explanation

Two key factors for site selection in aquaculture are water quality and accessibility. Water quality affects fish health and growth, while accessibility ensures ease of management and transportation of products.

The following figure is a cross-section of soil layers. Fill in the blanks on the types of layer and their characteristics.

Answer explanation

The soil layers typically include topsoil, subsoil, and bedrock. Topsoil is rich in organic material, subsoil contains minerals and less organic matter, while bedrock is solid rock. Each layer has distinct characteristics affecting plant growth.

Dissolved oxygen (DO) is one of the most important water quality parameters. Please describe the meaning of DO alongside the unit used.

Answer explanation

Dissolved oxygen (DO) refers to the amount of oxygen available in water, essential for aquatic life. It is typically measured in milligrams per liter (mg/L), indicating the concentration of oxygen in the water.

Tilapia fish in a pond owned by Mr. Hanafi experienced a massive death and he found out that dissolved oxygen in his fish pond dropped to 1 mg/L. So, he invited you as a consultant to help him solve the issue. Based on your knowledge, what would you suggest to Mr. Hanafi to solve the problem?

Answer explanation

To solve the low dissolved oxygen issue, I suggest increasing aeration in the pond, possibly using aerators or fountains, and reducing fish density to improve oxygen levels and prevent further fish deaths.