Calculating Daily Rainbow Trout’s Meal
If feeding is done by hand, the daily food of fish specially, trout, is calculated, according to the method of the next page and food is distributed in different times (3-4 times) from the walls of the pool.
Method for calculating the daily food of Fishes:
After releasing the fries in water, and after passing the feeding time(usually one week), for being informed about the status of growth and amount of food, the farmers must measure the weight of 0.5-1 % of the whole herd and defining the weight average of the fishes, act the biometry. By biometry, it can be aware of the rate and monotonousness of the growth of feed Conversion Ratio and growth index.
The farmers take act towards solving the problem, through inserting the correct information in the biometry table, in case of any problems in the growth rate or loss of the food.
The Raman suggests that the farmers directly connect with the Research & Development Group (R&D) for taking the necessary instructions to reach the maximum production.
Extruded food special for trout in order to obtain the minimum Feed Conversion Ratio (Optimal FCR)
|
Fish weight /gr |
0.5-0.2 |
0.5-0.2 |
2-5 |
5-7 |
7-10 |
10-25 |
25-75 |
75-150 |
150-300 |
>300 |
Average of FCR |
|
Water temperature centigrade |
|||||||||||
|
8-6 |
2.65 |
2.4 |
2.05 |
1.9 |
1.65 |
1.5 |
1.18 |
1 |
0.85 |
0.83 |
0.8-0.88 |
|
10-8 |
3.2 |
3 |
2.6 |
2.35 |
2 |
1.7 |
1.26 |
1.18 |
0.98 |
0.96 |
0.8-0.92 |
|
12-10 |
3.65 |
3.45 |
2.95 |
2.55 |
2.15 |
1.9 |
1.56 |
1.3 |
1.1 |
1.08 |
0.92-0.98 |
|
14-12 |
4.3 |
4.15 |
3.45 |
3.05 |
2.5 |
2.1 |
1.68 |
1.5 |
1.25 |
1.22 |
0.98-1 |
|
16-14 |
5 |
4.7 |
4.15 |
3.7 |
3.05 |
2.6 |
1.76 |
1.65 |
1.45 |
1.32 |
1-1.1 |
|
18-16 |
5.5 |
4.95 |
4 |
3.6 |
3 |
2.55 |
1.74 |
1.6 |
1.4 |
1.35 |
1.1-1.2 |
|
20-18 |
4.75 |
4.15 |
3.35 |
2.95 |
2.4 |
2.05 |
1.56 |
1.5 |
1.15 |
1.14 |
1.2-1.25 |
|
<20 |
Feeding by the fish’s appetite |
||||||||||
|
Feeding Time |
10-15 |
8-10 |
6-7 |
5-6 |
5-6 |
4-5 |
4-5 |
4-5 |
2-4 |
2-3 |
|
Note: The result of the feed calculator is based on the upper table.
Calculating the average of a piece of fish
- the net weight of total fishes
- number of the weighted fishes
- The average of a piece of fish
Calculating the daily required food of the fishes
- THE NET WEIGHT OF TOTAL FISHES
- THE AVERAGE OF A PIECE OF FISH
- Water temperature
- the percent of feeding
- The daily food required for fishes of the pool
- Feeding Time