High quality organic fish hunting скачать в хорошем качестве

High quality organic fish hunting

Pangasius Market Reports world wide Pangasius costs rising all along the supply chain as COVID-19 impact lingers 16-07-2021 Last year saw pangasius farming operations in Viet Nam slow significantly as the global pandemic took a heavy toll on demand, logistics and processing activities. While core markets are now gradually coming back to life, trade restrictions and rising costs ... Sharp revenue drops in 2020 but 2021 outlook is more positive 07-04-2021 The impact of COVID-19 on key import markets created many challenges for the Vietnamese pangasius industry in 2020, subduing farming activities and accelerating the downward price trend. However, a partial recovery of the Chinese market and a much tighter supply ... Pangasius prices plunge as pandemic impact lingers on 07-01-2021 The effect of the global COVID-19 pandemic on world seafood markets has accelerated a downward price trend that began in early 2019. However, the severity of the impact for Vietnamese producers has been mitigated somewhat by a resilient US market and effective management ... COVID-19 sees pangasius prices slump and export revenues plunge 09-09-2020 The COVID-19 sees pangasius prices slump and export revenues plunge 09-09-2020 In order to increase production and maximise profit, the farming of pangasius has been intensifying, but with this comes a risk of increased disease and problems caused by viruses, bacteria, fungi, parasites and other pathogens. One primary constraint to pangasius farming is disease, which generates high costs in areas such as prevention and treatment. As long as culture conditions are good, pangasius are generally resistant to disease during the grow-out period but deteriorating water quality, handling or low water temperatures can all increase the likelihood of parasitic or bacterial infections. group of pangasius crowded at a pond surface Disease outbreaks one of the biggest challenges in pangasius aquaculture Common disease problems include protozoan infestations on the skin or gills and bacterial infections from handling or environmental stress. As a fish with no scales, Pangasius is also highly susceptible to the protozoan parasite icthyopthirius multifilus. Large-scale outbreaks and mortality in Pangasius are rare, but the following diseases have been recorded: BNP (bacillary necrosis of pangasius) This is caused by Edwardsiella ictaluri, a bacteria that survives in pond water for around two weeks and up to three to four months in pond mud. Fingerlings and juvenile fish are most at risk, although fish of all ages can be affected. High stocking densities, pollutants, health problems and crowding can bring on the disease. It is usually fatal, and mortality rates increase rapidly. Clinical signs tend to become apparent immediately before death when the fish swim slowly at the surface of the water, and look pale with internal white spots on the liver, kidney and spleen. Red spot disease Brought on by a group of motile aeromonas septicaemia, this disease occurs in fingerlings and during the grow-out phase. Symptoms include slow swimming, no food intake, haemorrhages on the head, mouth and base of the fins and possible gas in the gut. Conditions that favour red spot disease are high stocking densities, environmental pollutants and organic mud in ponds. Red Spot Disease is more likely to occur when the fish are stressed, for example during handling or transportation. Parasite diseases These are brought on by Trichodina spp and Epistylis spp. Symptoms include slow swimming at the surface of the water, disorientation, lesions, fin rot, white spots on the body and difficulty breathing. Fish are also vulnerable to bacterial infections as they become very weak and have less of an appetite. Sporadic outbreaks with a low mortality rate also occur. Adverse climate conditions, such as downpours of rain followed immediately by sunshine, can help bring on the disease, as well as poor water quality and high stocking densities. Prevention and treatment Inadequate feed and a reduced oxygen level are among a range of stressors that can lead to potential pathogens invading pangasius and causing a disease outbreak. Sponsor message