BAHASA INGGRIS – NURSERY MANAGEMENT
📘 BAHASA INGGRIS – NURSERY MANAGEMENT
📖 Text 1 (untuk soal no. 1–5)
Water quality management is one of the most important factors in nursery success. Parameters such as dissolved oxygen, pH, temperature, and ammonia levels must be monitored daily. Poor water quality can cause stress, disease, and even mass mortality of fry. To maintain good water quality, farmers perform regular water exchange, use aeration systems, and remove uneaten feed and waste. A stable environment helps fry grow faster and achieve higher survival rates.
📖 Text 2 (untuk soal no. 6–10 & 16–17)
Effect of Stocking Density on Growth and Survival
| Stocking Density (fry/m²) | Average Growth (g/week) | Survival Rate (%) | Stress Level |
|---|---|---|---|
| 50 (low) | 2.5 | 92 | Low |
| 150 (medium) | 2.0 | 85 | Moderate |
| 300 (high) | 1.2 | 68 | High |
The data shows that higher stocking density reduces both growth rate and survival rate due to increased competition for food and oxygen. However, low density means using more tanks or ponds for the same number of fry, which increases production costs.
📖 Text 3 (untuk soal no. 11–15 & 18–20)
Disease prevention is better than treatment in nursery management. Common diseases in fish nurseries include bacterial infections and parasitic attacks. Farmers can prevent diseases by using biosecurity measures, such as disinfecting equipment, quarantining new fry, and controlling water quality. Vaccination is also available for some species. When diseases do appear, early detection is crucial. Therefore, farmers should observe fish behavior daily. If fish stop eating or swim abnormally, it may indicate a health problem.
📖 Text 4 (untuk soal Categorisation no. 21–25)
Daftar kata/frasa
dissolved oxygen, biosecurity, therefore, however, aeration, quarantine, vaccination, as a result, mortality, in contrast
Kategori: A = Technical terms (nursery management), B = Cohesive devices (connectors)
Algani Saputra
ReplyDeleteAlgani Saputra
ReplyDeleteKls:Xl apapl