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1. It can make full use of local resources and reduce feed costs. When self-produced feed is used, it can be timely, locally adapted, and locally sourced to make full use of self-produced feed or feeds with high local nutrient content, low price, and guaranteed source to save as much as possible. Freight and labor expenses reduce feed costs. In particular, in some areas where farming is a main industry and aquaculture is a sideline, it is also possible to make full use of winter time and winter resorts to grow some raw materials such as wheat and rapeseed to supplement the shortage of raw materials for the following year. Lower feed costs.
2. Disease prevention drugs can be added in time to control the occurrence of fish diseases. Currently, most of the full-priced feeds for farmed fish are hard granular. In the course of use, there are quite a few additives or disease-prevention drugs that are added. More inconvenient. When self-proportioned feed is used, various feed additives and disease-preventing drugs can be timely added according to the needs of farmed fish to further improve feed quality, increase feed conversion rate, and strengthen the prevention and treatment of fish diseases.
3. It is beneficial to design a suitable feed formula based on the stocking mode. Different regions have different stocking patterns, and the required feed nutrient levels are also very different. Most manufacturers produce more full-priced feeds. According to the nutrient requirements of the main cultured fish, the feed formulation is designed. The nutrient demand of the fish is rarely considered, and the self-contained feed can comprehensively consider the main cultured fish and the breeding according to the farming pattern and the stocking status of the different species of fish. The proportion of fish stocks and nutrient requirements, design suitable feed formulations to meet the nutritional needs of fish cultured.
4. It is beneficial to timely adjust the feed formula according to the growth of fish. With the growth of farmed fish, the demand for nutrition is also changing. Therefore, it is also required that the nutritional level of feed be adjusted to a certain extent. The nutritional needs of fish at all stages of growth can effectively reduce feed costs. If the feed is fed with full-priced feed, it will be more passive. It will not be able to timely adjust the formula according to the growth of the fish. When preparing its own feed, it will be able to timely adjust the formula according to the growth of the fish, properly reduce the nutritional level, and reduce unnecessary waste.
5. Special granulation conditions are conducive to the addition of various enzyme preparations. Enzyme preparations have been used for many years in livestock and poultry feeds. Various fish feeds undergo a process of conditioning and maturing, and enzyme preparations One type of active protein, in which activity is easily destroyed, thus limiting its use in fish feed. The self-made feeds mostly use small feed granulation machinery, and the lack of conditioning and maturing processes during the processing, and the granulation process does not have the conditions of high temperature and high heat, which not only avoids the loss of some heat-labile nutrients in the feed, but also gives each The addition of heat-labile enzyme additives, such as heat-labile feed additives, offers the possibility. Enzyme preparations can, to some extent, improve the utilization of feed, reduce the feed coefficient, reduce environmental pollution, and help promote the growth of farmed fish.
6. Shorten the storage time of feeds and help ensure the quality of feeds Self-proportioned feeds are generally provided with the use of them. The storage time of feeds is short, avoiding the loss of various nutrients and the moldy growth of feeds during long-term storage and long-distance transportation. Deterioration, thus ensuring the quality of the feed.
Second, the difference between self-made feed and full-priced feed
1. Raw materials At present, in some areas where self-made feeds are used, various raw materials are mostly purchased by premixed distributors. These distributors lack knowledge of raw materials and do not have some necessary testing equipment. Therefore, raw materials The quality control is often poorly done. Most manufacturers who produce full-priced feeds have separate laboratories, which can not only control the raw materials well, but also control the manufactured products to a certain extent, ensuring the quality of the feed and stability.
2. Formulation The formulation of the feed formulation is a work that requires high technical requirements. It is by no means a matter of mixing and mixing several types of raw materials. This requires that the manufacturer of the premix has a professional formula. The division can design reasonable formulae according to the different needs of farmers. However, due to the relatively late start of the culture of fish-breeding ingredients, our country is relatively short of technical personnel in the area of ​​aquafeed formulation. Many manufacturers of premixes do not have professional formulators and can only touch stones to cross the river. In addition, some farmers do not trust the technicians, they often adjust the formula without permission, and they are free to increase the amount of raw materials used in limited quantities. Full-price feed mills not only have specialized formulators, but also have strict controls on formula management, and there are no arbitrary adjustments, thus ensuring the scientificity, rationality and seriousness of formulas.
3. The processing of self-provisioned feed has a natural insufficiency is that the equipment is relatively simple, does not have the superior production conditions of the feed mill, so there are some deficiencies in the feed processing. First, cultivators who use self-proportioned feeds are seldom equipped with crushers and mixers. The fineness and mixing uniformity of raw materials are not as good as those of feed mills. Secondly, self-produced feeds are all made with small granulators, with no steam adjustment. In the quality system, the feed produced has not undergone the process of conditioning, maturing, etc. Some microorganisms in the raw materials have not been inactivated, and feeding may affect the health of farmed fish.
Third, the problems that should pay attention when making self-mixing
1. It is necessary to pay attention to putting good raw materials in high-quality raw materials as prerequisites for preparing high-quality feeds. Therefore, when self-produced feedstuffs are used, it is imperative to shut down good raw materials, and it is not necessary to excessively seek out cheap materials. As the saying goes, "a price for a product," which is a certain truth, the good quality of raw materials, because of genuine, often high prices, low prices of raw materials are often poor quality. When choosing, you can't just look at how much money you need for a bag of raw materials, but also look at its nutritional value, calculate the price of the formulated feed according to the recommended formula, and if necessary, do a feeding test.
2. Care should be taken to maintain the stability of formulas and feeds. All types of premixes are accompanied by recommended formulae. These formulas are generally designed according to common farming patterns and are scientific and reasonable. They cannot be changed at will during the ingredient process. For example, the amount of soybean meal cannot be arbitrarily increased or decreased, and can not be replaced by rapeseed meal or cottonseed meal at random. Otherwise, the protein content will be too high or insufficient, and the content of antinutritional factors in the feed will be high, which will affect the growth and development of the fish and reduce it. Economic benefits. If the recommended formula is not suitable for your own farming mode, you must make appropriate adjustments under the guidance of the manufacturer's technician. In addition, raw materials of different manufacturers, especially premixes, must not be used at will, because the nutrient content of different manufacturers' raw materials is different. If they are arbitrarily adjusted, the nutritional composition and palatability of feeds will also change. Finally, it will also affect the growth and development of fish.
3. To pay attention to the uniformity of mixing At present, most farmers in rural areas use artificial agitation when preparing feeds. Artificial mixing, the uniformity can not meet the requirements, seriously affecting the use of premixed materials. The coefficient of variation of the feed-mix uniformity is usually not greater than 10%. In order to mix raw materials such as various premixes with small amounts of raw materials, such as soybean meal and rapeseed meal, it is better to adopt a step-wise dilution method, that is, first add premixes, etc., to a small amount of common raw materials for mixing. Repeatedly, gradually dilute until uniform. The best conditions to buy a mixer, before mixing the premix must be properly diluted, feed and premix can be used after mixing.
4. The scientifically self-provisioned feed should be followed in accordance with the principle of distribution and use since the ingredient storage management, because the mixed feed is not easy to long-term preservation, not too much at one time. Under normal circumstances, 3 days to 5 days with a time, too long will make certain nutrients loss; store to set up a special warehouse, indoor ventilation and light drying, avoid moisture, prevent moldy deterioration, reduce feed digestibility; To prevent contamination, the storage location and packaging feed utensils must be clean and non-toxic, and it is imperative that rats not be stung by random or stored together with pesticides, fertilizers, etc.
Fish farming is cheap and effective
First, the advantages of self-mixed feed