Australia is one of the highest producers of yabbies, primarily throughout the southern areas of Australia where the weather conditions suit the yabby very well. Traditional farming however, still requires a lot of land to build and maintain adequate dams, it needs to be of the right soil type to hold the water volumes required and has to be within the right areas to assist in distribution of the final product.
Yabbies are hardy creatures; they proliferate in what we would consider murky conditions and are generally good, self maintaining breeders. They can however, be affected by stress. Combined problems of overcrowding, limited feed and bad habitats can cause stress levels to be at a point where they die. High mortality rates of up 95% are considered acceptable in traditional farming techniques and for those that do make it, harvesting often damages the yield, breaking claws or legs which make them undesirable for market.
The Extreme Density Unit (EDU®) was developed to resolve problems that traditional farming techniques encounter.
The EDU takes yabby farming indoors. This allows total control over the weather conditions, lighting, water quality and even security during the full development of the product. The extreme densities are possible as the yabbies are directly next to, as well as above and below each other but remain isolated. The densities possible provide high yields exceeding 1000 units per m2 produced each year.
Water temperature is maintained at an optimum level and lighting can be monitored. These variables can be adjusted to provide the best possible conditions for breeding and accelerated growth.
Water quality is important. Dirty water in dams is normally an advantage to the yabby; if they can't see each other then they are less likely to fight and damage themselves but at the time of harvest however, these yabbies must be cleaned and purged to make them suitable for the market. The EDU uses a technique to separate each individual yabby so this damage does not occur and clear water can be used.
The EDU is a complete aquaculture system, ready to produce market-ready yabbies from fingerlings or it can be used to clean and purge traditionally farmed dam stock. By using clean, clear water throughout the cycle a cleaner final product is produced. When grown from fingerlings this system eliminates any need for final cleaning as they are already ready for packaging.
Feeding is a controlled service, designed to ensure all produce is provided it's optimal nutrition. At regular intervals, a high growth feed is provided to promote it's full growth potential. This is increased over the lifespan of the yabby as it grows and requires larger amounts of food.
When ready, final harvesting is quick and cost effective. Traditional methods require netting the stock in the dams, returning the various sizes and qualities of available stock for later sorting, purging and discarding. By being isolated in the EDU, simple removal of each high quality, pre-purged and sorted unit is quick, easy and efficient. A high yield of quality produce with a demonstrated mortality rate not exceeding 1%.
Large dams in distant paddocks covering hectares of space are prone to pilfering. Aside from birds, eels and fish that can easily enter a dam, it's not uncommon for looters to net a dam and head off. By being fully indoors, the EDU is as secure as the locks and alarms in the building. Now yabbies can be grown right next to the city restaurant or railway station that they are being delivered to that day.
If you are interested in more information about the EDU system you can contact us.