What points should be noted in rainbow trout farming?
Rainbow trout is a newly emerging and fairly popular farming project. Rainbow trout is rich in nutritional value, and its meat is plentiful with soft bones and little fishy smell, making it a high-grade edible fish for many restaurants. Its growth cycle is relatively short, and the required cost is not high either, so it is very popular on the market. Higher economic benefits have attracted a large number of people to farm it. However, there are many points to note during the farming process. So what points should be noted? Let's take a look together below!
1. Feed
Rainbow trout is extremely sensitive to feed, and the shape and specifications of the feed are very important in causing the fish to reject food. The size of the feed not only affects the rainbow trout's taste, but also has a certain effect on the rainbow trout's digestion, so when feeding pellet feed, be sure to pay attention to the size of the fish at each stage and feed suitable feed. If the fish is large and the feed is too small, it will make it difficult for the fish to eat, causing the feed to sink to the bottom. If the fish is small and the feed is large, it will be unfavorable for the fish to eat, causing the feed to dissolve in the water and reducing feeding utilization.
2. Dissolved oxygen level
The dissolved oxygen content in the water not only has a great impact on the fish's growth and development, but also has a certain effect on the fish's feeding and digestion. If the dissolved oxygen level is too low, the fish's appetite will worsen, and it will be difficult to digest after eating, reducing the original growth rate and wasting feed. If the dissolved oxygen level is suitable, the fish can grow normally, maintain a good growth rate, and feed utilization will also increase. Therefore, maintaining a good dissolved oxygen content in the pond can allow the fish to grow better, and can also improve the quality of the fish meat and increase its commercial value.
3. Water temperature
Rainbow trout is a cold-water fish, and the suitable water temperature must absolutely not exceed 25°C. The most suitable water temperature for rainbow trout growth is 16-18°C. If it is lower than 8°C or higher than 20°C, then the growth rate of rainbow trout will decrease significantly. If it exceeds 25°C, it will stop eating and die within a week. In the case of high summer temperatures, absolutely do not use ice water to lower the temperature. Well water should be pumped for water changes to lower the temperature. In winter, proper insulation should also be provided. Keeping the pond water always between 16-18°C can accelerate the growth of rainbow trout and the utilization rate of feed.
4. Feeding amount
The daily feeding amount for rainbow trout should not be too much or too little. Too little will leave the rainbow trout not full and still in a hungry state, reducing the growth rate of the rainbow trout. Too much feeding not only wastes feed in vain, but also causes the leftover feed to dissolve in the water and affect water quality. This easily leads to disease. A suitable feeding amount for rainbow trout not only benefits feed utilization, but also promotes the growth and development of rainbow trout. The protein content in the feed should occupy first place. Fish at different growth stages should be screened out and fed separately to promote the good growth of each fish.
The above are the several aspects that need attention during the process of farming rainbow trout. Although rainbow trout is a newly emerging farming project, its farming prospects are still very good. The market price is also very considerable, and this is the most important aspect that attracts many people's interest. Therefore, I hope everyone can farm it correctly and become a pioneer in this industry, and I also hope this article by the editor can help everyone.