| Cost | Zam.K. | |||
| A. | Polyculture of fish with feeding and fertilizing | |||
| 1. | Production and income1 | |||
| 5 000 kg production (Zam.K. 1/kg) | Total income | 5 000 | ||
| 2. | Annual production costs2 | |||
| Construction costs depreciated over 30 years plus 10% interest | 626 | |||
| Transport: 10% of one pick-up truck depreciated over 5 years plus 10% interest | 330 | |||
| Maintenance material, tools, nets, etc. depreciated over 3 years plus 10% interest | 40 | |||
| Fingerlings: 1 500 at 10 g each, 150 kg/Zam.K. 1/kg | 150 | |||
| Fertilizing: manure plus green fertilizer | 110 | |||
| Feed: Zam.K. 0.10/kg, food conversion rate 4:1, 5 000 kg production | 2 000 | |||
| Labour: 1 man/year | 426 | |||
| Fuel | 80 | |||
| Total cost | 3 762 | |||
| 3. | Net profit | 1 238 | ||
| 4. | Average rate of return: 33% | |||
| B. | Polyculture of fish combined with pig raising | |||
| 1. | Production and income1 | |||
| Fish production 7 000 kg/Zam.K. 1.00/kg | 7 000 | |||
| Pig production 5 000 kg/Zam.K. 1.50/kg | 7 500 | |||
| Total income | 14 500 | |||
| 2. | Annual production costs2 | |||
| Construction costs depreciated over 30 years plus 10% interest | 626 | |||
| Construction of pigsty for 100 pigs, 300 m2/Zam.K. 8 = Zam.K. 2 400 depreciated over 30 years plus 10% interest | 88 | |||
| Transport: 10% of one pick-up truck depreciated over 5 years plus 10% interest | 330 | |||
| Maintenance material, tools, nets, etc. depreciated over 3 years plus 10% interest | 40 | |||
| Fingerlings: 15 000 at 10 g each, 150 kg/Zam.K. 1/kg | 150 | |||
| Piglets: 100 pigs of 10 kg/ha = 1 000 kg of pigs × Zam.K. 1.5/kg | 1 500 | |||
| Feed for pigs: Zam.K. 0.15/kg, food conversion rate 8:1, 40 000 kg of pig production | 6 500 | |||
| Labour: 2 man/year | 840 | |||
| Fuel | 80 | |||
| Total cost | 10 154 | |||
| 3. | Net profit | 4 346 | ||
| 4. | Average rate of return: 43% | |||
| C. | Polyculture of fish combined with duck raising | |||
| 1. | Production and income1 | |||
| Fish production 2 500 kg/Zam.K. 1.00 | 2 500 | |||
| Duck production 1 500 kg/Zam.K. 1.20 | 1 800 | |||
| Total income | 4 300 | |||
| 2. | Annual production costs2 | |||
| Construction costs depreciated over 30 years plus 10% interest | 626 | |||
| Construction of duck house for 1 000 ducks, 300 m2/Zam.K. 8 = Zam.K. 2 400 depreciated over 30 years plus 10% interest | 88 | |||
| Transport: 10% of one pick-up truck depreciated over 5 years plus 10% interest | 330 | |||
| Maintenance material, tools, nets, etc. depreciated over 3 years plus 10% interest | 40 | |||
| Fingerlings: 15 000 at 10 g each, 150 kg/Zam.K. 1/kg | 150 | |||
| Ducks: 500 ducklings 0.4 kg/ha = 125 kg of ducklings × Zam.K. 1.0 | 125 | |||
| Feed for ducks: Zam.K. 0.10/kg, food conversion rate 5:1, 7 500 kg for 1 500 kg of duck production | 750 | |||
| Labour: 2 man/year | 840 | |||
| Fuel | 80 | |||
| Total cost | 3 029 | |||
| 3. | Net profit | 1 271 | ||
| 4. | Average rate of return: 41% | |||
1 Recorded at minimum prices: fish Zam.K. 1.00/kg, pigs Zam.K. 1.50/kg, ducks Zam.K. 1.20/kg
2 Interest on borrowed capital is not included in the costs and has to be added when means of financing are identified
