The Freshwater Fisheries Society of BC's Summerland Trout hatchery was established in 1928, and is the longest continually running hatchery in British Columbia.
Development of Rainbow trout eggs and hatched larvae is related to ambient water temperature with thermal limitations. An egg will take longer to hatch in colder water than in warmer water within a thermal range for normal egg development from about 4C to 13C. The method developed for tracking development is in Accumulated Thermal Units (ATU), also called Degree Days. A Rainbow trout egg will hatch after 330 ATU, or 33 days at 10C, 66 days at 5C and so on.
I was thinking about starting out hatching trout what do I need? how much money will I have to spend? What equipment do I need? Do you need a constant flow of water? How big would the tank/draw thing have to be? what do you feed them? do you need to have special water?
how much time they take to hatch..what is optimum temp for hatching....can we just spread eggs in pound and some day see trout fry swimming??????????????
In nature Rainbow trout spawn in streams with flowing water of the right temperature profile and with high oxygen content. The parent female fish also covers her eggs in small gravel that hides the eggs from predators and lets water flow over and around the eggs as they develop because they need a good oxygen supply when developing. Shore-spawning populations of salmonids have been documented when access to streams is denied although survival success is this circumstance is dubious.
The thermal tolerances for rainbow trout vary with strain & life stage. Generally speaking, 20C is at the top of the thermal tolerance and if this period of exposure was longer than a few days, the fish would have trouble surviving. As metabolism in fish is regulated by temperature, rising temperature increases metabolism. However, oxygen carrying capacity of water decreases with increasing temperature, thus the fish metabolism increases and the availability of the much-needed oxygen decreases.
thanks.....!!! for the reply and all info......Can trout live and breed in area where water temp goes to around 20 C in summer and in winters about 3 C..........
Development of Rainbow trout eggs and hatched larvae is related to ambient water temperature with thermal limitations. An egg will take longer to hatch in colder water than in warmer water within a thermal range for normal egg development from about 4C to 13C. The method developed for tracking development is in Accumulated Thermal Units (ATU), also called Degree Days. A Rainbow trout egg will hatch after 330 ATU, or 33 days at 10C, 66 days at 5C and so on.
There's a project called "Trout in the Classroom" that takes kids through the hatchery process and grow-out. That may answer a lot of your questions.
I was thinking about starting out hatching trout what do I need? how much money will I have to spend? What equipment do I need? Do you need a constant flow of water? How big would the tank/draw thing have to be? what do you feed them? do you need to have special water?
how much time they take to hatch..what is optimum temp for hatching....can we just spread eggs in pound and some day see trout fry swimming??????????????
In nature Rainbow trout spawn in streams with flowing water of the right temperature profile and with high oxygen content. The parent female fish also covers her eggs in small gravel that hides the eggs from predators and lets water flow over and around the eggs as they develop because they need a good oxygen supply when developing. Shore-spawning populations of salmonids have been documented when access to streams is denied although survival success is this circumstance is dubious.
The thermal tolerances for rainbow trout vary with strain & life stage. Generally speaking, 20C is at the top of the thermal tolerance and if this period of exposure was longer than a few days, the fish would have trouble surviving. As metabolism in fish is regulated by temperature, rising temperature increases metabolism. However, oxygen carrying capacity of water decreases with increasing temperature, thus the fish metabolism increases and the availability of the much-needed oxygen decreases.
thanks.....!!! for the reply and all info......Can trout live and breed in area where water temp goes to around 20 C in summer and in winters about 3 C..........
No
The fish expire much as in suffocation. Winter temperatures of 3C are well within thermal tolerances. Trout cannot mature in temps above 16C.
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