Credits: Biovision-Infonet Occurrence of disease and parasites in farmed fish is mainly as a result of poor husbandry. Disease causing organisms are always in the environment fish live in and they cause few problems. The pathogens naturally exist in an unstable “equilibrium” with their hosts until this balance is disturbed through environmental changes and human […]
Monthly Archives: February 2020
Fish Water Quality
Credits: Biovision-Infonet Fish live and are totally dependent on the water they live in for all their needs. This means that we must understand the water quality requirements of the fish under culture very well. Different fish species have different and specific range of water quality aspects (temperature, pH, oxygen concentration, salinity, hardness, etc.) within […]
Fish Pond Construction
Credits: Biovision-Infonet The importance of proper designs, construction and the need for involvement of experts during the process of setting up aquaculture production units is paramount. Ideally, production units should be designed in such a way to allow total control of: What gets in or out When it gets in or out How it does […]
Hatchery and Fingerling Production
Credits: Biovision-Infonet Although tilapia breed freely in ponds, it is important for farmers (producers) to consider using properly produced fingerlings. They need to invest in hatcheries for fry and fingerling production. Quality fingerlings in tilapia aquaculture are very important. For this reason it is advisable for farmers to generate their own fingerlings if they can […]
Harvesting Fish
Credits: Biovision-Infonet Harvesting Fish produced for consumption should be harvested when they reach market size. In Kenya, tilapia are ready for harvesting within six to nine months depending on the size at stocking, target harvest size, water temperature and level of management employed. The time of harvesting is determined through regular sampling which should be […]
De-Worming
Credit: Dr. iCow Worms can be grouped as round worms, tape worms and flukes. They can be controlled by good feeding and watering practices and regular use of effective broad-spectrum anthelmintic or dewormers. In organic herds, it is not permitted to use medicine for prevention of diseases but parasite infections should be prevented through good management practices, […]
Fish Integrated Systems
Credits: Biovision-Infonet Integrated systems Manure application can be made easy by placing animal production units adjacent to or over the fish ponds so that fresh manure can easily be delivered to the pond on a continuous basis. This also allows the feed wasted by the animals to fall into the fish pond and utilised by […]
Blood in Calf Urine
Dr.iCow’s Diary Date: 31.01.2019 Case №: 07/2020 Dear Dr.iCow, Enlighten about a 2 months calf urinating blood stained urine. From: Helen, County: Makueni, Kenya. Discussion: The young calf is taking milk and water between milk feeding. She is very active and is not showing signs of illness except there presence of blood in her urine. […]
Fish Feeding
Credits: Biovision-Infonet Compared to terrestrial animals, fish have lower energy requirement (they are more efficient), they require less lipids in feed (except for cold water species such as trout), they have higher protein requirements and fish can absorb certain mineral element directly from the water. There are three types of food used in aquaculture: In […]
Lumpy Skin Disease
Dr.iCows’ Dairy Date: 30.01.2019 Case №: 06/12020 Signs of lumpy skin disease. From: Daniel, County: Bomet, Kenya. Discussion: Daniel called with a concern of cattle having skin problems in his area, Bomet County. Dear Daniel, Lumpy skin disease (LSD) is a viral disease that affects cattle and is a very devastating disease. It is a […]