Tips about future sustainable fisheries management development

 Today, we will introduce some knowledge about the fishery.

The global fishery production has been slowing down year by year or affected by the increasing awareness of sustainable development of fisheries, which is also in line with the expectations of the United Nations Sustainable Development Goal 14: "Conservation and sustainable use of oceans and marine resources for sustainable development", The development trend of the world's fisheries in the future is generally reflected in the following three aspects:

Ecosystem Sustainability

In the future, international, regional and national fishery management legal systems and organizational models will continue to increase and improve, becoming the guarantee and foundation for the smooth cooperation and management of global sustainable fisheries. Since the adoption of the Code of Conduct for Responsible Fisheries in 1995, the United Nations and related organizations have issued a series of international guidelines and technical specifications accordingly, and the number of countries developing responsible aquaculture and establishing legal frameworks has also increased from less than 40 in 2011 to 2018. more than 90 countries.

Another sustainable development direction of the modern ecosystem is the improvement of technological innovation and informatization. First, the establishment of a comprehensive database of fisheries and aquaculture has made it possible to connect data on production, fishing vessels, trade, and employment. Based on this, information systems and partnerships have been established among various fisheries-related organizations, such as the Fishery Resources Monitoring System (FIRMS), the Aquatic Genetic Resources Monitoring System, and the Aquatic Species Introduction Database. Quantity and product legality monitoring, biological genetic research, fishery resource management, information exchange and sharing, etc. Now, more and more farmers use the dry type fish feed pellet machine.

Biodiversity Sustainability

The sustainability of biodiversity is an important part of maintaining marine ecosystems. At present, about 24.2% of fish stocks in marine fisheries are in a state of overfishing. It will be imperative to promote sustainable transformation of marine fishery fishing methods in the future. action. For example, among the seven species of tuna with high economic value, about 33.3% of the population is currently overfished. In the future, purse seine and trawling will continue to be replaced by longline fishing. Through the popularization of improved fishing gear fishing methods, bycatch will generally be reduced by about 25%-50%, and help to retain and select high-value species, improve economic efficiency and environmental sustainability.

Sustainable Fisheries Livelihood Development

In terms of sustainable fishery livelihoods, the United Nations has designated 2022 as the "International Year of Artisanal Fisheries and Aquaculture", and the participation of small-scale producers in sustainable resource management will become mainstream. Correspondingly, neglected human and labor rights in the fisheries and aquaculture value chain will also be emphasized in the future, and social security systems, laws and regulations at the national and international levels will be further implemented.

Aquaculture is the leading force in the global fishery in the future. As a major aquaculture country, China will continue to transform from extensive to intensive, adopting eco-friendly technological innovations to reduce production capacity and improve efficiency.

Kind tips:

The FAO forecast results are based on the following specific assumptions: future macroeconomic environment; international trade rules and tariffs; frequency of events and impact on resources; immunity from tsunamis, tropical storms (cyclones, hurricanes and typhoons), floods, Impact of severe climate events; no outbreaks of new fish diseases; fisheries management measures including fishing restrictions; and no market shocks. China's policy implications (the 13th Five-Year Plan) are also taken into account.

The world fishery in 2020 is still full of unknowns and challenges, but as people's awareness of sustainable development gradually increases, it is expected to bring a more promising future to the industry. 

Come to see the machine in LIMA Machinery.

The fish feed size of the crushed particles

Hello:

Do you know aquatic animals like the fish? Do you raise fish?

Ordinary fish feed The particle size of fish feed raw materials is below 40 mesh, and the digestion and absorption rate is greatly reduced. The crushing particle size of the compound feed for juveniles of common carp, grass, green and bream should pass through 50-60 mesh (0.30mm-0.25mm), and the crushing particle size of the compound feed for adult fish should pass through a 30-40 mesh sieve. 60-0.355mm ).

Aquatic feed requires finer particle size: the requirements of aquatic products for feed are different from those of terrestrial livestock and poultry, and the crushed particle size of aquatic feed is often finer than that of livestock and poultry feed, mainly for the following reasons:

1.Digestive capacity. The digestive tract of fish and shrimp is short and thin, and the ratio of its length to its own body length is generally much smaller than that of livestock and poultry, and its digestion and absorption capacity is also weak. At present, most of the fish, shrimp and crab species that are cultivated are carnivorous or partial carnivorous omnivorous aquatic products, and the length of their digestive tract is shorter than that of herbivorous or filter-feeding ones. In addition, fish and shrimps have weak digestion and absorption capacity for plant-based grains or cakes, and poor utilization of raw (immature) feeds. Therefore, crushing the feed finer helps to improve the utilization rate of the feed.  And do you know the feed mixer machines and feed dryer machines? The machines will be used in the fish feed production line.

2.Feeding environment. Aquatic animals eat in water, and the feed must be put into the water. Therefore, aquatic feeds are required to have a certain stability in water to keep their shape and nutrients from being lost. The smaller particle size helps to improve the water stability of the feed. At present, the common forms of aquafeed are hard pellets, extruded pellets, soft pellets and dough-like feeds. For the first two forms, there is a hydrothermal quenching and tempering extrusion treatment during the processing. Small particle size, water and heat are easily transferred to the inside of the powder particles, reducing the difference in the degree of treatment between the center and the surface of the particles, which is conducive to starch gelatinization and protein denaturation in the feed ingredients. This change process can make the difference between different powder particles. 

Interphase bonding, inlay, and forming stable particles under the action of extrusion. The degree of change is large, which can significantly improve the water stability of the feed. For the latter two forms, the finer powder particles will bond well with cohesive substances such as starch under the action of moisture, and the surface of the soft particles or dough will be smoother, which is beneficial to improve the stability of the feed water. In addition, when pulverizing with a relatively fine particle size, the powder particles are also embedded with each other, which is also beneficial to the stability in water.

3. Individual size. The individuals that breed aquatic products are generally not as large as livestock and poultry, and their calibers are also small. For the same aquatic species, the finished product is thousands of times larger than the individual seedlings. Especially for fish, shrimp and crab fry, the particle size required for crushing is correspondingly smaller.

So come to limapoultrymach for a look.

Tips of tilapia breeding and seedling preservation

There are two methods of clearing the pond: dry clearing and water clearing. Due to limited conditions, wet clearing is generally adopted here. The specific plan is that 15-20 days before the seedlings are placed, 5-10 cm of quicklime with water can be used for disinfection, and the general dosage is 40-80 kg/mu. After 2-3 days, use a dense mesh filter to inject water, and the water depth should be 2 meters.

It is very important to cultivate a pond of good water, which is related to the success rate of seedling placement. If the water quality is too thin, the water body will lack the stability and nutrients needed for the growth of fish fry. At this time, it is recommended to use "Algae Ansheng" to cultivate beneficial algae such as diatoms and green algae. Use the "Double Profit" package every two days (1 pack of "Limiaoduo" + 4 bottles of "Lijunduo" + 10 catties of brown sugar + 400 catties of water, fermented for 1-2 days) to improve the carbon-nitrogen ratio of the water body and maintain the pond biological stability. 

Note: Do not use large bags of granular organic fertilizer or chemical fertilizers. Avoid the rapid growth of algae and the single algae phase, which will cause algae inversion, dirty bottom, water change, high pH value, bubble disease, etc.

10-15 days after water cultivation, the zooplankton, phytoplankton, and microorganisms in the water have reached a balance. The typical sign is the appearance of cladocerans in the water body. This kind of water is stable, has strong self-purification ability and normal indicators. This is the best time to put seedlings. good time. The fish feed extruder machine in fish feed production line is very important.

The density of tilapia seedlings should be 20,000 to 30,000/mu. If the density is too high, the bait organisms in the pond will be insufficient, and it is not conducive to insect and disease prevention. The temperature difference between the seedling bag and the pond should not exceed 2 °C. Generally, the seedling bag is placed in the water until the temperature difference is lower than 2 °C, and then the seedling bag is opened and the seedlings are placed. The fry is easy to cause mechanical damage during the operation. 

After the fry are placed, the use of disinfectants with high safety and low irritation (such as "Yongle iodine") can reduce the probability of the fry getting sick.

1. Feeding "Benefit Duo" Suspended bait "Benefit Duo" can be fed from the start of seedling release, which has an attracting effect and is helpful for fry opening and nutritional supplement; it can also cultivate zooplankton, stabilize water and prevent air bubbles. Purify water body; use for 7-10 days, the effect of strengthening seedlings is outstanding. Maybe you will use the feed crushing machines, which will help you a lot in feeding your fish.

2. Multi-use live bacteria Using the "Double Profit" package can not only increase the bait for fry, but also supplement the beneficial flora of the pond, speed up the circulation of substances, stabilize the water body, and prevent and control bubble diseases.

3.Under normal weather conditions, 7-10 days after the seedlings are released, the oxygen consumption of the fry will increase, which will cause hypoxia and affect the survival rate of the fry. It is recommended to turn on the aerator at around 12 o'clock in the evening to prevent hypoxia and increase oxygen. It can also stabilize water bodies.

Welcome come to see our animal feed machines--Limapoultrymach.