The effect of water quality and feed quality on the quality of aquatic products

Water quality deterioration has an impact on aquaculture production, but the impact on the quality of aquatic products is often overlooked. The quality of water also affects the feed intake and utilization of fish and affects the quality of aquatic products. vsU China Feed Industry Information Network - based on feed, serving livestock

The deterioration of water quality leads to a decrease in the value of aquatic products. The main breeding objects have a certain adaptability to the deteriorated water bodies. Although they can survive in the deteriorating ecological environment, their growth and development are seriously affected, growth rate and reproductive capacity. Decline, the resistance to disease declines, when extreme weather (such as sudden rain in the hot season), it is extremely easy to suddenly develop serious diseases. The deterioration of water quality has the biggest impact on the aquaculture industry, but the quality of products grown under long-term deterioration of water quality has been seriously degraded. The taste is not as good as one year. From the perspective of economics, the "use value" of such aquaculture products has declined, and the price is constantly decreasing, and even the price lower than the cost of breeding is still unattended. vsU China Feed Industry Information Network - based on feed, serving livestock

Before the culture, if the water source is not contaminated by organic matter, the water quality in the pond water can be maintained in good condition. When the cultured object enters the pond and begins to produce, the water quality of the water body will change immediately. With the feeding of the feed, the weight of the fish, shrimp and crab, the organic matter in the water gradually increases, and the chemical factors of the water also change accordingly. These changes are generally detrimental to the growth and development of our cultured subjects. The water body space, especially the bottom layer of water, has a high accumulation of harmful chemical factors, and the fish will be avoided. The space that can be cultured in the water body is reduced, and the total water production (fish capacity) is reduced. small. From the point of view of actual aquaculture, if high-yield is pursued, it is inevitable that the water quality will gradually deteriorate. How to maintain the water quality in a stable state under the premise of a large amount of bait and fertilization is the key to ensure the high quality of the cultured species, and strengthen the common production. Water quality factor: adjustment of dissolved oxygen, ammonia nitrogen, nitrite nitrogen, nitrite, pH (pH), hydrogen sulfide (H2S), maintaining fresh water quality, is one of the measures to ensure the quality and quality of aquatic products. At present, microbial preparations are widely used in aquaculture, which can alleviate the degree of deterioration of water quality to some extent. Speaking of the fundamentals, it is also necessary to match the quality of the feed to truly achieve water quality regulation, and good water quality control can play a feed efficiency. Highly efficient intake and digestion of nutrients in feed by farmed animals such as fish must be carried out in a suitable water quality environment. If the water quality is too acidic, the blood of the fish will also become sour, the ability of the acidic blood to transport oxygen will decrease, and the fish will be physiologically deprived of oxygen. As a result, the food intake of the fish will decrease, and the conversion efficiency of nutrients in the feed will also decrease, which is manifested in aquaculture production. In the middle, the feed coefficient increases and the breeding cost increases, so the water quality factor is a prerequisite for the full effect of feed efficiency. If we correctly master the water quality control technology and ensure good water quality conditions in the aquaculture production, the quality of the feed will become the key. vsU China Feed Industry Information Network - based on feed, serving livestock

Good commodity compound feed must have the following characteristics: vsU China Feed Industry Information Network - based on feed, serving animal husbandry

1. The quantity and quality of nutrients are in line with the nutritional needs of the cultured objects. The corresponding and highly targeted design formula should be designed in different breeding stages. The price is not necessarily expensive, but the nutrients must be comprehensive, the digestibility and conversion rate are relatively high, and the “cutting of the fish”. vsU China Feed Industry Information Network - based on feed, serving livestock

2, good palatability. The particle size should be suitable. Different sizes of fish should be used to meet the needs of different sizes of fish, and at the same time meet the special requirements of the breeding object for the feed flavor. Unlike livestock and poultry feed, aquatic feed is introduced into the body of water. If it is not ingested within a certain period of time, these feeds are quickly decomposed by bacteria to deteriorate water quality. In recent years, the attracting performance of aquatic feed has been paid more and more attention. Demand. vsU China Feed Industry Information Network - based on feed, serving livestock

3, the price is high. Excellent commercial compound feeds can reduce the negative impact on water quality and reduce the rate of deterioration of water quality. At the same time, due to the comprehensive nutrition, the body of fish and other cultured objects can be guaranteed, the growth rate and disease resistance can be improved, the risk of breeding is reduced, the disease is reduced, and the use of fishery drugs is reduced to a minimum. The requirement for pollution farming reduces the cost of fishery medicine and can reduce costs. vsU China Feed Industry Information Network - based on feed, serving livestock