This document discusses feed conversion ratio and how to calculate daily feed allowance and total feed requirement for aquaculture. It provides a formula to calculate daily feed allowance based on average body weight, original number of stock, estimated survival rate, and feeding rate. It also gives examples of applying the formula for different stock scenarios, varying parameters like number of stock, weight after a period, survival rate, feeding rate, and feeding duration.

1. UNDERSTANDING
FEED CONVERSION
RATIO
MONCIAR A. YBANEZ, LPT, MFM (CAR)

5. EXERCISES:
• Row 1: Initial weigh: 5kgs. Harvest weigh: 125kgs Feeds given:
140kgs
• Row 2: Initial weigh: 5kgs. Harvest weigh: 100kgs. Feeds given:
200kgs
• Row 3: Initial weigh: 5kgs. Harvest weigh: 200kgs. Feeds given:
250kgs

6. COMPUTATION OF DAILY FEED ALLOWANCE
• Formula:
Daily Feed Allowance = W x N x S x R
Where: W (g) = average body weight of the stock after a given
period.
N = the original number of stocked
S (%) = estimated survival during a given period
R (%) = Feeding rate

7. •Example:
•Given: No. of stock in a 1 ha. Pond = 50,000
Weight after 30 days = 5 g
Estimated survival = 90%
Feeding rate = 8%
Feeding duration = 15 days

8. • Daily Feed Allowance (DFA) = W x N x S x R
= 5g x 50,000 x 0.90 x .08/day
= 18,000 g/day or 18 kg/day
Total Feed Requirement (TFR) = DFA x Feeding Duration
= 18 kg/day x 15 days
= 270 kg

9. EXERCISES:
• Row 1: No. of stock = 10,000
Weight after 30 days = 8 g
Estimated survival = 90%
Feeding rate = 12%
Feeding duration = 30 days

10. EXERCISES:
• Row 2: No. of stock = 5,000
Weight after 30 days = 5g
Estimated survival = 90%
Feeding rate = 15%
Feeding duration = 30 days

11. EXERCISES:
• Row 3: No. of stock = 3,000
Weight after 30 days = 10 g
Estimated survival = 90%
Feeding rate = 8%
Feeding duration = 45 days