Article published the September 4, 2018
IntroductionAquaculture has become the fastest growing food-producing industry around the world; however, the production efficiency of aquaculture could be further increased through the development of nutritious and cost-effective alternatives to traditional and finite marine protein feedstuffs such as fish meal (FM) (Suarez et al. 2013; Katya et al. 2014). Numerous studies have been carried out t ...
Participation in Forum on June 29, 2017
Dear Nguyen, thanks for sharing. New knowledge and learning experiences from the ground in this new problem. Appreciated. Yes, we need doctor and farmers are the best learning from trial and error.
Kumar Katya, PhD likes the comment:
1. Hot summer limit the oxygen dissolved in the water even you add more paddle wheels it will not work effective as partial covering by orchis mesh - farmers has started partial cover of the ponds in the hot season instead of adding more paddle wheels.2. After big raining the algae collapsed that resulted in exhausted DO in the bottom and favorable pathogen bacteria bloom plus stressful from pH, s ...
Participation in Forum on June 29, 2017
Dear Nguyen, appreciate your comments and approach. All these three questions could be answered by the same explanation and acceptance - "Yes fish/shrimp are frequently raised in stressful environment'. Specific rearing condition and weather play a vital role to trigger the epidemic. At the same time, summer mortality in Pacific oyster happens in the natural environment. Obliviously, rise in wate ...
Participation in Forum on June 28, 2017
Dear Laurence, Thank you!! Yes, agree its feed/premix/additive industry is the one pushing the aquaculture intensification around the world. There could be the misconception that, stagnating capture fishery, limited natural resources together with ever increasing seafood demand has generated the aquaculture intensification, expansion and rapid diversification trend. Yes, aquaculture production cou ...
Participation in Forum on June 28, 2017
Dear Laurence, Thanks for highlighting the importance of environment, feeds and feeding regime in ensuring the fish/shrimp health. Nevertheless, modern fish farming will continue to intensify, where functional feeds/ingredients have a major role to play. The ongoing trend of more fish per unit area and investment demands immune boosting diets, along with optimum rearing condition, as explained by ...
Kumar Katya, PhD likes this technical article:
The Impact of Feed Pelleting on Enzyme ThermostabilityIn animal feed manufacturing, the process of pelleting is used to convert mash feed into compressed pellets. Pelleting provides several advantages, such as ease of handling, reduction of dust and waste and standard composition. The use of pelleted feed is also known to improve the feed conversion ratio (FCR) due to better digestibility and abso ...
Participation in Forum on June 27, 2017
Dear Gary, appreciate your comments and I got a clear picture, how to figure out the substrate efficiency. Thanks
Dear Oscar, obliviously there should be a provision of drainage, too moist caused fungal proliferation in our experience. Ammonia and other toxicity issues might be another problems, as highlighted by you and Gary.
Good, keep the forum active and lets learn from each other. Thanks
Kumar Katya, PhD likes the comment:
Leachate from substrates can be high in ammonia. However, other materials, including metals with toxic characteristics, can be in the leachate. You might consider a different feeding rate or weight of substrate per larvae.
Dry matter conversion is calculated after the dry matter in the larvae and the substrate are calculated. Dry at 60 to 100 degrees C until a constant weight is achieved. The ...
Participation in Forum on December 27, 2016
Dear Participants,
Appreciate yours valid points and highlighting pertinent concerns.
Dear Gary, yes I have also seen several experienced nutritionists does this mistake in feed designing based upon focusing only on isonitrogenous and isocaloric diets. Protein/energy ratio apart, FM replacement studies also differ between the concept of Protein replacement vs ingredient replacement. Neverthe ...