Production efficiency of rainbow trout depending on the type of feed
2011
Vaško, Ž., Faculty of Agriculture, Banja Luka (Bosnia and Herzegovina) | Savić, N., Faculty of Agriculture, Banja Luka (Bosnia and Herzegovina) | Mikavica, D., Faculty of Agriculture, Banja Luka (Bosnia and Herzegovina)
Even the cheapest fish food, or the lowest conversion factor do not have to provide the most favorable economic results in the fattening of fish. This is confirmed by the example of experiment in fattening rainbow trout in cage system using six different types of food. The coefficient of conversion of food in the autumn-winter conditions ranged between 0.90 and 1.48, while the spring-summer conditions between 0.98 and 1.55. Food prices ranged from 1.85 to 2.83 BAM/kg. Economic efficiency of production is measured using the partial coefficient of efficiency as the relative values of gain and cost of fish feed used. In autumn-winter conditions of growing the largest coefficient of efficiency (Epm2=3.51) had the food used in treatment 2, although it is not even the cheapest food or food with the lowest conversion ratio. The same food was confirmed as the most cost-effective and economical spring-summer conditions of the experiment (Epm2=3.07) in which the consumption of food and fish growth were more intense than in autumn-winter period.
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